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Eta statya o parafileticheskoj gruppe o klade sm Zavropsidy Zaprosy Reptiliya i Reptilii perenapravlyayutsya syuda sm takzhe drugie znacheniya terminov Reptiliya i Reptilii Presmyka yushiesya ili repti lii lat Reptilia tradicionno vydelyaemyj klass preimushestvenno nazemnyh pozvonochnyh zhivotnyh iz klady amniot vklyuchayushij sovremennyh cherepah krokodilov klyuvogolovyh i cheshujchatyh Presmykayushiesya yavlyayutsya parafileticheskoj gruppoj tak kak dali nachalo pticam no ne vklyuchayut ih samih V kachestve monofileticheskoj alternativy klassa vydelyaetsya klada zavropsid ili reptilij v peresmotrennom sostave v kotoruyu vklyuchayut predstavitelej tradicionnogo klassa presmykayushihsya krome zveroobraznyh i ptic PresmykayushiesyaNauchnaya klassifikaciyaDomen EukariotyCarstvo ZhivotnyePodcarstvo EumetazoiBez ranga Dvustoronne simmetrichnyeBez ranga VtorichnorotyeTip HordovyePodtip PozvonochnyeInfratip ChelyustnorotyeNadklass ChetveronogieKlada AmniotyKlada ZavropsidyKlass PresmykayushiesyaMezhdunarodnoe nauchnoe nazvanieReptilia Laurenti 1768Sovremennye otryadyCrocodilia Krokodily Rhynchocephalia Klyuvogolovye Testudines Cherepahi Squamata CheshujchatyeGeohronologiya poyavilsya 312 mln letmln let Period Era Eon2 588 Chet nyjKa F a n e r o z o j23 03 Neogen66 0 Paleogen145 5 Mel M e z o z o j199 6 Yura251 Trias299 Perm P a l e o z o j359 2 Karbon416 Devon443 7 Silur488 3 Ordovik542 Kembrij4570 Dokembrij Nashe vremya Mel paleogenovoe vymiranie Triasovoe vymiranie Massovoe permskoe vymiranie Devonskoe vymiranie Ordoviksko silurijskoe vymiranie Kembrijskij vzryvSistematika v VikividahIzobrazheniya na VikiskladeITIS 173747EOL 1703FW 36322 V XVIII XIX vekah vmeste s amfibiyami obedinyalis v gruppu gadov holodnokrovnyh nazemnyh pozvonochnyh Tradicionno k etoj gruppe otnosili razlichnyh pozvonochnyh soglasno iznachalnym predstavleniyam pohozhih po svoej organizacii na sovremennyh reptilij naprimer nemammalnyh sinapsid predkov i rodstvennikov sovremennyh mlekopitayushih Odnako v nastoyashee vremya ryad voprosov o fiziologii mnogih vymershih grupp organizmov ostayotsya otkrytym a dannye ob ih geneticheskih i evolyucionnyh svyazyah ne podderzhivayut podobnogo roda klassifikaciyu Reptilii perezhili rascvet v epohu mezozoya kogda oni dominirovali na sushe v more i v vozduhe Krupnejshie nazemnye zhivotnye prinadlezhali k dinozavram V konce melovogo perioda bolshaya chast reptilij osobenno krupnogo razmernogo klassa vymerla Odnako bytuyushee mnenie chto sovremennye presmykayushiesya yavlyayutsya lish razroznennymi ostatkami togo drevnego mira neverno Vydelyaetsya okolo 12 060 recentnyh vidov presmykayushihsya bolshaya chast kotoryh otnositsya k otryadu cheshujchatyh Nebolshie hishnye dinozavry dali nachalo procvetayushej v nastoyashee vremya gruppe zhivotnyh pticam prichyom mnogie prisposobleniya obuslovivshie evolyucionnyj uspeh etoj gruppy poyavilis eshyo u eyo arhozavrovyh predkov predstavlyavshih soboj specializirovannuyu gruppu diapsid teplokrovnost teploizoliruyushij pokrov tela perya razvityj golovnoj mozg i tak dalee Evolyuciya presmykayushihsyaOsnovnaya statya Proishozhdenie reptilij Predki presmykayushihsya reptiliomorfy izvestny so srednego karbona Ranee pervymi reptiliyami schitali predstavitelej gruppy kotilozavrov v kotoruyu vklyuchali razlichnye malosvyazannye taksony reptiliomorf Prodvinutye reptiliomorfy amnioty srazu razdelilis na dve vetvi sinapsidy i zavropsidy K sinapsidam otnosyatsya mlekopitayushie i ih vymershie rodstvenniki ranee izvestnye kak zveroobraznye reptilii s tochki zreniya kladisticheskoj taksonomii presmykayushimisya ne yavlyayutsya K zavropsidam v svoyu ochered otnosyatsya presmykayushiesya i filogeneticheski vlozhennye v ih sostav pticy V konce permskogo perioda oformlyayutsya osnovnye evolyucionnye linii reptilij vklyuchaya arhozavromorf i lepidozavromorf V triase poyavlyayutsya pervye dinozavry krokodilomorfy zavropterigii cherepahi i predstaviteli prochih grupp V mezozojskoj ere nastupaet rascvet presmykayushihsya oni dostigayut naibolshego mnogoobraziya i osvaivayut morskie i rechnye vodoyomy a takzhe vozdushnoe prostranstvo V yurskom periode sredi odnoj iz vetvej teropodovyh dinozavrov maniraptorov vydelyayutsya pervye pticy avialy Poslednyaya gruppa sovremennyh presmykayushihsya zmei sformirovalas v melovom periode Proishozhdenie Proizoshli reptilii primerno 310 320 millionov let nazad v bolotah pozdnego kamennougolnogo perioda kogda iz prodvinutyh reptilomorfov stali vydelyatsya drugie vidy Samym drevnim izvestnym zhivotnym kotoroe otnosyat k amniotam yavlyaetsya hotya vozmozhno eto byl temnospondil Obnaruzhena celaya seriya sledov iz iskopaemyh plastov Novoj Shotlandii datirovannyh 315 millionov let nazad na kotoryh vidny tipichnye dlya reptilij palcy nog i otpechatki cheshui Eti sledy pripisyvayutsya Hylonomus starejshej iz izvestnyh reptilij Eto bylo malenkoe pohozhee na yashericu zhivotnoe ot 20 do 30 santimetrov ot 7 9 do 11 8 dyujma v dlinu s mnogochislennymi ostrymi zubami ukazyvayushimi na pitanie v osnovnom nasekomymi Drugie primery vklyuchayut Westlothiana na dannyj moment schitaetsya lish reptiliomorfom a ne nastoyashej amniotoj i Paleothyris oba pohozhego teloslozheniya Inogda mikrozavrov schitali nastoyashimi reptiliyami poetomu vozmozhno bolee rannee proishozhdenie presmykayushihsya Dalnejshaya istoriya Samye rannie amnioty v tom chisle pervye reptilii te amnioty kotorye blizhe k sovremennym reptiliyam chem k mlekopitayushim byli v znachitelnoj stepeni zateneny bolee krupnymi chetveronogimi takimi kak i ostavalis nebolshoj nezametnoj chastyu fauny do kraha kamennougolnyh tropicheskih lesov Etot vnezapnyj kollaps zatronul neskolko bolshih grupp Primitivnye chetveronogie byli osobenno zatronuty mnogie ischezli v to vremya kak reptilii zhili luchshe buduchi ekologicheski adaptirovannymi k bolee zasushlivym usloviyam Primitivnym chetveronogim kak i sovremennym amfibiyam bylo neobhodimo vernutsya v vodu chtoby otlozhit yajca naprotiv amnioty kak i sovremennye reptilii yajca kotoryh imeyut skorlupu pozvolyayushuyu otkladyvat ih na sushu luchshe prisposobilis k novym usloviyam zhizni Amnioty zanimali novye nishi bystree chem do kollapsa i gorazdo bystree chem primitivnye chetveronogie Oni priobreli novye strategii pitaniya v tom chisle travoyadnye i plotoyadnye ranee oni byli tolko nasekomoyadnymi i ryboyadnymi S etogo momenta reptilii dominirovali v pishevyh cepyah i otlichalis bolshim raznoobraziem chem primitivnye chetveronogie chto podgotovilo pochvu dlya mezozoya izvestnogo kak epoha reptilij Odnoj iz samyh izvestnyh rannih reptilij yavlyaetsya Mesosaurus rod iz rannej permi kotoryj obital v vode pitayas ryboj Issledovanie raznoobraziya reptilij v kamennougolnom i permskom periodah provedyonnoe v 2021 godu predpolagaet gorazdo bolee vysokuyu stepen raznoobraziya chem schitalos ranee sopostavimuyu ili dazhe prevyshayushuyu takovuyu u sinapsid Takim obrazom nachalas Pervaya epoha reptilij Anapsidy sinapsidy diapsidy i zavropsidy Tradicionno predpolagalos chto pervye reptilii sohranili unasledovannyj ot predkov anapsidnyj cherep imeyushij otverstiya tolko dlya glaz i nozdrej Otkrytie sinapsidopodobnyh otverstij sm nizhe v cherepe neskolkih predstavitelej Parareptilia klady soderzhashej bolshinstvo amniot tradicionno nazyvaemyh anapsidami vklyuchaya lantanozuhoidov millerettid bolozavridov nekotorye nikteroleteridy nekotorye prokolofonoidy i po krajnej mere nekotorye mezozavry sdelalo ego bolee dvusmyslennym i v nastoyashee vremya neyasno imel li predkovyj amniot anapsidopodobnyj ili sinapsidopodobnyj cherep Etih zhivotnyh tradicionno nazyvayut anapsidy i oni obrazuyut parafileticheskuyu gruppu iz kotorogo proizoshli drugie gruppy Ochen skoro posle togo kak poyavilis pervye amnioty otdelilis zhivotnye nazvannye Synapsida Eto amnioty pohozhie na mlekopitayushih ili predki mlekopitayushih kotorye pozzhe dali nachalo nastoyashim mlekopitayushim Vskore posle etogo drugaya gruppa razvila analogichnuyu chertu na etot raz s dvojnym otverstiem za kazhdym glazom za chto oni poluchili nazvanie Diapsida dve arki Funkciya otverstij v etih gruppah zaklyuchalas v tom chtoby oblegchit cherep i dat mesto dlya dvizheniya myshc chelyusti chto pozvolilo sdelat bolee silnyj ukus Tradicionno schitalos chto cherepahi yavlyayutsya vyzhivshimi parareptiliyami na osnovanii ih anapsidnoj struktury cherepa kotoraya schitalas primitivnoj chertoj Obosnovanie etoj klassifikacii osparivalos nekotorye utverzhdali chto cherepahi yavlyayutsya diapsidami kotorye razvili anapsidnye cherepa chtoby uluchshit svoyu bronyu Bolee pozdnie morfologicheskie filogeneticheskie issledovaniya s uchyotom etogo pomestili cherepah prochno v sostav Diapsida Vse molekulyarnye issledovaniya ubeditelno podtverdili prinadlezhnost cherepah k diapsidam chashe vsego kak sestrinskuyu gruppu po otnosheniyu k sushestvuyushim arhozavram Permskie reptilii S okonchaniem karbona amnioty stali dominiruyushimi V to vremya kak primitivnye nazemnye reptiliomorfy vsyo eshyo sushestvovali sinapsidnye amnioty predstavili megafaunu gigantskih zhivotnyh v forme pelikozavrov takih kak edafozavr i plotoyadnyj dimetrodon V seredine permskogo perioda klimat stal bolee suhim chto privelo k izmeneniyu fauny na smenu pelikozavram prishli terapsidy Parareptilii chi massivnye cherepa ne imeli zaglaznichnyh otverstij sohranyalis i procvetali na protyazhenii vsego permskogo perioda Parareptilii iz chisla parejazavrov dostigli gigantskih razmerov v pozdnej permi i v konce koncov ischezli v konce perioda vozmozhno vyzhili cherepahi V nachale etogo perioda sovremennye reptilii razvilis i razdelilis na dve osnovnye linii arhozavromorfy predki cherepah krokodilov i dinozavrov i lepidozavromorfy predshestvenniki sovremennyh yasheric i tuatary Obe gruppy ostavalis yashericepodobnymi otnositelno nebolshimi i nezametnymi v techenie permskogo perioda Mezozojskie reptilii V konce permskogo perioda proizoshlo krupnejshee izvestnoe massovoe vymiranie sm Permsko triasovoe vymiranie Bolshaya chast bolee rannej parareptilnoj i sinapsidnoj megafauny ischezla zamenivshis pohozhimi na sovremennyh reptiliyami osobenno arhozavromorfami Oni harakterizovalis dlinnymi zadnimi nogami i pryamohozhdeniem rannie formy chem to napominali dlinnonogih krokodilov Arhozavry stali dominiruyushej gruppoj v triasovyj period hotya potrebovalos 30 millionov let prezhde chem ih raznoobrazie stalo takim zhe bolshim kak u zhivotnyh zhivshih v permskom periode Arhozavry prevratilis v horosho izvestnyh nam dinozavrov i pterozavrov a takzhe predkov krokodilov Poskolku reptilii snachala a zatem dinozavry dominirovali v mezozojskuyu eru etot interval shiroko izvesten kak epoha reptilij Dinozavry byli kak gigantskimi tak i melkimi v tom chisle bolee melkih teropod s peryami V melovoj period oni dali nachalo pervym nastoyashim pticam Sestrinskoj gruppoj Archosauromorpha yavlyaetsya Lepidosauromorpha v kotoruyu vhodyat yashericy i tuatary a takzhe ih iskopaemye rodstvenniki Lepidosauromorpha soderzhal po krajnej mere odnu osnovnuyu gruppu mezozojskih morskih reptilij mozazavrov zhivshih v melovoj period Bolee spornym yavlyaetsya filogeneticheskoe razmeshenie drugih osnovnyh grupp iskopaemyh morskih reptilij vklyuchaya ihtiozavrov i zavropterigov kotorye evolyucionirovali v rannem triase Raznye avtory svyazyvali eti gruppy libo s lepidozavromorfami libo s arhozavromorfami Itiopterigi takzhe schitalis diapsidami kotorye ne prinadlezhali k naimenee inklyuzivnoj klade soderzhashej lepidozavromorfov i arhozavromorfov Kajnozojskie sovremennye presmykayushiesya V konce melovogo perioda proizoshla gibel megafauny reptilij mezozojskoj ery sm Mel paleogenovoe vymiranie znamenitoe ischeznoveniem dinozavrov Iz krupnyh morskih reptilij ostalis tolko morskie cherepahi a iz nemorskih krupnyh reptilij tolko poluvodnye krokodily i v celom pohozhie na nih perezhili vymiranie a poslednie predstaviteli poslednih pohozhie na yasheric vymerli v miocene Iz ogromnogo mnozhestva dinozavrov gospodstvovavshih v mezozoe vyzhili tolko melkie klyuvovidnye pticy Eta dramaticheskaya model vymiraniya v konce mezozoya pereshla v kajnozoj Mlekopitayushie i pticy zapolnili pustye nishi ostavlennye reptiliyami i v to vremya kak diversifikaciya reptilij zamedlilas diversifikaciya ptic i mlekopitayushih prinyala eksponencialnyj oborot Tem ne menee reptilii po prezhnemu byli vazhnymi organizmami fauny Posle ischeznoveniya bolshinstva linij arhozavrov i morskih reptilij k koncu melovogo perioda diversifikaciya reptilij prodolzhalas na protyazhenii vsego kajnozoya Mnogo vidov cheshujchatyh vymerlo vo vremya Mel paleogenovogo vymiraniya vosstanovivshis tolko cherez desyat millionov let posle nego Segodnya cheshujchatye sostavlyayut bolshinstvo zhivyh reptilij gt 95 Izvestno primerno 11 950 sovremennyh vidov tradicionnyh reptilij a ptic eshyo okolo 10 000 chto vchetvero prevyshaet kolichestvo mlekopitayushih predstavlennyh primerno 5700 zhivymi vidami KlassifikaciyaV XIII veke kategoriya reptilij byla priznana v Evrope kak sostoyashaya iz mnozhestva yajcekladushih sushestv vklyuchaya zmej razlichnyh fantasticheskih chudovish yasheric razlichnyh amfibij i chervej kak zapisano Vinsentom de Bove v ego Zerkale V XVIII veke reptilii s samogo nachala klassifikacii byli otneseny k amfibiyam Karl Linnej rabotavshij v bednoj vidami Shvecii gde obyknovennuyu gadyuku i obyknovennogo uzha chasto mozhno vstretit ohotyashimisya v vode vklyuchil vseh reptilij i zemnovodnyh v klass III Amfibii v ego Systema Naturae Terminy reptiliya i amfibiya byli v znachitelnoj stepeni vzaimozamenyaemy reptiliya ot lat repere polzat predpochitalas francuzami Iosif Flavij Nikolaus Laurenti byl pervym kto oficialno ispolzoval termin Reptilia dlya oboznacheniya reptilij i amfibij v osnovnom shodnogo s tem chto u Linneya Segodnya eti dve gruppy vsyo eshyo izuchayutsya odnoj naukoj gerpetologiej Tolko v nachale XIX veka stalo yasno chto reptilii i zemnovodnye na samom dele sovershenno raznye zhivotnye i Per Andre Latrejl vozvyol dlya poslednih klass Baracia 1825 g razdeliv chetveronogih na chetyre izvestnyh klassa reptilij zemnovodnyh ptic i mlekopitayushih Britanskij anatom Tomas Genri Haksli sdelal opredelenie Latrejlya populyarnym i vmeste s Richardom Ouenom rasshiril Reptilia vklyuchiv v nego razlichnyh iskopaemyh dopotopnyh monstrov vklyuchaya dinozavrov i mlekopitayushih sinapsid Dicynodon Eto byla ne edinstvennaya vozmozhnaya shema klassifikacii v lekciyah Hantera prochitannyh v Korolevskom kolledzhe hirurgov v 1863 godu Haksli sgruppiroval pozvonochnyh v mlekopitayushih zavroidov i ihtioidov poslednie vklyuchali ryb i zemnovodnyh Vposledstvii on predlozhil nazvaniya Sauropsida i Ichthyopsida dlya dvuh poslednih grupp V 1866 godu Gekkel prodemonstriroval chto pozvonochnyh mozhno razdelit na osnove ih reproduktivnyh strategij i chto reptilij ptic i mlekopitayushih obedinyaet amnioticheskoe yajco Terminy Sauropsida lica yasheric i Theropsida lica zverej byli snova ispolzovany v 1916 godu E S Gudrichem dlya razlicheniya yasheric ptic i ih rodstvennikov s odnoj storony Sauropsida i mlekopitayushih i ih vymershih rodstvennikov Theropsida s drugoj Gudrich podderzhal eto razdelenie po harakteru serdca i sosudov v kazhdoj gruppe i drugim osobennostyam takim kak stroenie perednego mozga Po slovam Gudricha obe linii proizoshli ot bolee rannej osnovnoj gruppy Protosauria pervye yashericy v kotoruyu on vklyuchil nekotoryh zhivotnyh kotorye segodnya schitayutsya reptiliepodobnymi amfibiyami a takzhe rannih reptilij V 1956 godu Devid Meredit Sirs Uotson zametil chto pervye dve gruppy razoshlis ochen rano v istorii reptilij poetomu on razdelil Protosauria Gudricha mezhdu nimi On takzhe pereosmyslil Sauropsida i Theropsida isklyuchiv sootvetstvenno ptic i mlekopitayushih Takim obrazom ego Sauropsida vklyuchala Procolophonia Eosuchia Millerosauria Chelonia cherepahi Squamata yashericy i zmei Rhynchocephalia Crocodilia tekodontov parafileticheskie bazalnye Archosauria neptichih dinozavrov pterozavrov ihtiozavrov i zavropterigi V konce XIX veka byl predlozhen ryad pereopredelenij Reptilij Priznaki perechislennye Lidekkerom v 1896 godu naprimer vklyuchayut edinstvennyj zatylochnyj myshelok chelyustnoj sustav obrazovannyj kvadratnoj i sustavnoj kostyami i nekotorye harakteristiki pozvonkov Zhivotnye vydelyaemye etimi formulirovkami amnioty otlichnye ot mlekopitayushih i ptic do sih por schitayutsya reptiliyami Razdelenie sinapsid zavropsid dopolnilo drugoj podhod kotoryj razdelil reptilij na chetyre podklassa Eta klassifikaciya byla iniciirovana Genri Fejrfildom Osbornom i razvita i stala populyarnoj blagodarya klassicheskoj knige Paleontologiya pozvonochnyh Romera Etimi chetyrmya podklassami byli Anapsida kotilozavry i Chelonia cherepahi i ih rodstvenniki Synapsida pelikozavry i terapsidy zveropodobnye reptilii Evriapsidy protorozavry malenkie rannie yasheropodobnye reptilii i morskie zavropterigi i ihtiozavry poslednih v rabote Osborna nazvali Parapsidami Diapsida bolshinstvo reptilij vklyuchaya yasheric zmej krokodilov dinozavrov i pterozavrov Raspolozhenie Euryapsida bylo neopredelyonnym Inogda schitalos chto ihtiozavry voznikli nezavisimo ot drugih evriapsidov i im dali bolee staroe nazvanie Parapsida Pozzhe Parapsida byla po bolshej chasti isklyuchena kak gruppa ihtiozavry byli klassificirovany kak incertae sedis vmeste s Euryapsida Odnako chetyre ili tri esli Euryapsida slivayutsya s Diapsida podklassa ostavalis bolee ili menee universalnymi dlya nespecialistov na protyazhenii vsego XX veka Nedavnie issledovateli v znachitelnoj stepeni otkazalis ot nego K nachalu XXI veka paleontologi pozvonochnyh nachali prinimat filogeneticheskuyu taksonomiyu v kotoroj vse gruppy opredelyayutsya takim obrazom chtoby byt monofileticheskimi to est gruppy v kotorye vhodyat vse potomki opredelyonnogo predka Reptilii kak istoricheski opredeleno yavlyayutsya parafileticheskimi poskolku oni isklyuchayut kak ptic tak i mlekopitayushih Oni sootvetstvenno proizoshli ot dinozavrov i ot rannih terapsidov kotoryh tradicionno nazyvali reptiliyami Pticy bolee tesno svyazany s krokodilami chem poslednie s ostalnymi sovremennymi reptiliyami Nesmotrya na rannie predlozheniya o zamene parafileticheskih reptilij monofileticheskimi zavropsidami vklyuchayushimi ptic etot termin tak i ne poluchil shirokogo rasprostraneniya a esli i primenyalsya to ne primenyalsya posledovatelno Kolin Tadzh pisal Mlekopitayushie yavlyayutsya kladoj i poetomu kladisty rady priznat tradicionnyj takson mlekopitayushih i pticy tozhe predstavlyayut soboj kladu povsemestno pripisyvaemuyu formalnomu taksonu Aves Mammalia i Aves po suti yavlyayutsya subkladami v bolshoj klade Amniota No tradicionnyj klass Reptilia ne yavlyaetsya kladoj Eto vsego lish chast klady Amniota chast ostavshayasya posle otdeleniya Mammalia i Aves On ne mozhet byt opredelyon sinapomorfno kak eto pravilno Vmesto etogo on opredelyaetsya kombinaciej svojstv kotorye u nego est i priznakov kotoryh emu ne hvataet reptilii eto amnioty u kotoryh net meha ili perev V luchshem sluchae predpolagayut kladisty my mogli by skazat chto tradicionnye reptilii eto amnioty ne otnosyashiesya k pticam i mlekopitayushim Originalnyj tekst angl Mammals are a clade and therefore the cladists are happy to acknowledge the traditional taxon Mammalia and birds too are a clade universally ascribed to the formal taxon Aves Mammalia and Aves are in fact subclades within the grand clade of the Amniota But the traditional class Reptilia is not a clade It is just a section of the clade Amniota the section that is left after the Mammalia and Aves have been hived off It cannot be defined by synapomorphies as is the proper way Instead it is defined by a combination of the features it has and the features it lacks reptiles are the amniotes that lack fur or feathers At best the cladists suggest we could say that the traditional Reptilia are non avian non mammalian amniotes Kogda ispolzovalsya termin Sauropsida ona imel pochti to zhe opredelenie chto i Reptilia V 1988 godu Zhak Gote predlozhil kladisticheskoe opredelenie Reptilia kak monofileticheskoj gruppy vklyuchayushej cherepah yasheric i zmej krokodilov i ptic ih obshego predka i vseh ego potomkov Hotya opredelenie Gote bylo blizko k sovremennomu konsensusu tem ne menee ono stalo schitatsya nevernym potomu chto fakticheskaya svyaz cherepah s drugimi reptiliyami v to vremya eshyo ne byla horosho izuchena S teh por osnovnye izmeneniya vklyuchali perenaznachenie sinapsid kak nereptilij i klassifikaciyu cherepah kak diapsid Mnozhestvo drugih opredelenij bylo predlozheno drugimi uchyonymi v gody posle stati Gote Pervoe takoe novoe opredelenie bylo opublikovano Modesto i Andersonom v 2004 godu Oni opredelili Reptilia kak vseh amniot bolee blizkih k Lacerta agilis i Crocodylus niloticus chem k Homo sapiens Eto osnovannoe na steble opredelenie ekvivalentno bolee rasprostranyonnomu opredeleniyu Sauropsida kotoroe Modesto i Anderson sinonimizirovali s Reptilia poskolku poslednee bolee izvestno i chashe ispolzuetsya Odnako v otlichie ot bolshinstva predydushih opredelenij Reptilia opredelenie Modesto i Andersona vklyuchaet ptic poskolku oni vhodyat v kladu vklyuchayushuyu kak yasheric tak i krokodilov Dochernie taksony Pareiasaurus serridens Procolophonomorpha Platypterygius kiprijanoffi Ichthyosauria Lepidozavry Lepidosauria Po chasovoj strelke nachinaya sverhu sleva gatteriya chyornaya mamba obyknovennaya iguana i setchatyj piton Cherepahi Testudines Sverhu krasnobryuhaya korotkoshejnaya cherepaha indijskaya lopastnaya cherepaha Snizu galapagosskaya cherepaha bissa Arhozavriformy Archosauriformes 1 j ryad Erythrosuchus africanus evparkeriya 2 j ryad filippinskij krokodil 3 j ryad shlemonosnyj kazuar Anhanguera piscator Klass Presmykayushiesya Reptilia Podklass Parareptilii Parareptilia vozmozhno bazalnye diapsidy Otryad Mezozavry Mesosauria Otryad Otryad Prokolofonomorfy Procolophonomorpha Otryad Bolozavry Bolosauria vozmozhno v otryade Procolophonomorpha Podklass Diapsidy Diapsida Otryad Araeoscelidia Klada Neodiapsidy Neodiapsida Otryad Thalattosauria Klada Klada polozhenie sporno Nadotryad Ichthyopterygia Otryad Ihtiozavry Ichthyosauria Klada Zavrii Sauria incertae sedis Otryad Choristodera vozmozhno bazalnye arhozavromorfy Nadotryad Zavropterigii Sauropterygia vozmozhno parafileticheskaya gruppa k TestudinataOtryad Plakodonty Placodontia Otryad Otryad Pleziozavry Plesiosauria Infraklass Lepidozavromorfy Lepidosauromorpha Nadotryad Lepidozavry Lepidosauria Otryad Klyuvogolovye Rhynchocephalia Otryad Cheshujchatye Squamata Infraklass Arhozavromorfy Archosauromorpha s l Archelosauria Klada Testudinaty Testudinata Otryad Cherepahi Testudines Klada Arhozavromorfy Archosauromorpha s s Klada Klada Otryad Rinhozavry Rhynchosauria Klada Arhozavriformy Archosauriformes Otryad Fitozavry Phytosauria i bolee bazalnye taksony Klada Arhozavry Archosauria Klada Psevdozuhii Pseudosuchia Otryad Etozavry Aetosauria i prochie bazalnye taksony Nadotryad Krokodilomorfy Crocodylomorpha Otryad Krokodily Crocodilia Klada Avemetatarzalii Avemetatarsalia Klada Klada Ornitodiry Ornithodira Otryad Pterozavry Pterosauria Nadotryad Dinozavry Dinosauria Otryad Yasherotazovye Saurischia v kladistike vklyuchaet ptic Aves Otryad Pticetazovye Ornithischia FilogenetikaSoglasno opredeleniyu Modesto amp Anderson 2004 presmykayushiesya ili reptilii Reptilia yavlyayutsya naibolee inklyuzivnoj kladoj vklyuchayushej Lacerta agilis Linnaeus 1758 i Crocodylus niloticus Laurenti 1768 no ne Homo sapiens Linnaeus 1758 Dannoe opredelenie ekvivalentno opredeleniyu zavropsid Sauropsida dannomu Gote v 1994 godu soglasno kotoromu k etoj klade otnosyatsya vse presmykayushiesya i drugie amnioty blizhe rodstvennye im chem mlekopitayushim Mammalia Kladogramma soglasno Lee 2013 Amnioty Sinapsidy Zavropsidy Reptilii Kaptorinidy Diapsidy Neodiapsidy Younginiformes Zavrii Lepidozavromorfy Archelosauria Arhozavromorfy Parareptilii Procolophonia Kladogramma osnovannaya na Ford amp Benson 2020 Amnioty Sinapsidy Zavropsidy Reptilii Diapsidy Varanopidae Parareptilii Neodiapsidy Hylonomus Kaptorinidy StroenieV razdele ne hvataet ssylok na istochniki sm rekomendacii po poisku Informaciya dolzhna byt proveryaema inache ona mozhet byt udalena Vy mozhete otredaktirovat statyu dobaviv ssylki na avtoritetnye istochniki v vide snosok 22 iyulya 2022 Presmykayushiesya naryadu s pticami i mlekopitayushimi otnosyatsya k vysshim pozvonochnym zhivotnym amniotam i v celom ih stroenie tipichno dlya dannoj gruppy odnako takzhe imeyutsya cherty bolee prostyh po stroeniyu amfibij Pokrov Cheshujki na kozhe lentochnogo krajtaCheshujki na kozhe prytkoj yashericy Otpechatki perev na fossilii teropodovogo dinozavra mikroraptora Naruzhnyj kozhnyj pokrov sovremennyh presmykayushihsya v rezultate utolsheniya i orogoveniya obrazuet cheshujki ili shitki U yasheric rogovye cheshujki perekryvayut drug druga napominaya cherepicu U cherepah srosshiesya shitki formiruyut sploshnoj prochnyj pancir Smena rogovogo pokrova proishodit putyom polnoj ili chastichnoj linki kotoraya u mnogih vidov proishodit neskolko raz v god Naryadu s etim drevnie reptilii mogli takzhe byt pokryty svoeobraznymi peryami yavlyayushimisya po stroeniyu specializirovannoj formoj cheshui ili pohozhimi na puh nitevidnymi obrazovaniyami progressivnye arhozavry Plotnaya i suhaya kozha soderzhit pahuchie zhelezy otsutstvuyut kozha reptilij suhaya harakternyj blesk ej pridayut gladkie cheshui V naruzhnoj chasti vnutrennego sloya kozhi chasto nahodyatsya specialnye kletki hromatofory V etih kletkah sekretiruyutsya pigmenty melaniny i karotinoidy Takzhe v hromatoforah vstrechaetsya sposobnyj otrazhat svet guanin Blagodarya hromatoforam nekotorye presmykayushiesya sposobny izmenyat okrasku svoego tela za sravnitelno korotkoe vremya Hameleony naibolee izvestnye predstaviteli s podobnym svojstvom Skelet V osevom skelete presmykayushihsya razdelenie na otdely bolee zametno chem u zemnovodnyh Horosho razlichimy pyat otdelov pozvonochnika shejnyj lat pars cervicalis tulovishnyj poyasnichno grudnoj pars thoracolumbalis poyasnichnyj krestcovyj pars sacralis i hvostovoj pars caudalis Tipichnym dlya presmykayushihsya yavlyaetsya sleduyushee stroenie osevogo skeleta Obshee kolichestvo pozvonkov razlichno u raznyh vidov 50 80 u zmej vozrastaet do 140 435 Iz pozvonkov shejnogo otdela ot 7 do 10 dva perednih atlant i epistrofej obrazuyut sustav pozvolyayushij golove ne tolko dvigatsya v vertikalnoj ploskosti otnositelno pervogo shejnogo pozvonka no i povorachivatsya V tulovishnom otdele ot 16 do 25 pozvonkov kazhdyj s paroj ryober Pervye neskolko par ryober prikreplyayutsya k grudine obrazuya grudnuyu kletku otsutstvuet u zmej V krestcovom otdele vsego dva pozvonka k shirokim poperechnym otrostkam kotoryh prichlenyaetsya taz Hvostovoj otdel sostavlyayut neskolko desyatkov 15 40 postepenno umenshayushihsya v razmerah pozvonkov Poslednie hvostovye pozvonki predstavlyayut soboj nebolshie palochkovidnye kostochki V nekotoryh gruppah reptilij osevoj skelet imeet otlichiya U zmej pozvonochnik otchyotlivo delitsya lish na tulovishnyj i hvostovoj otdely grudina otsutstvuet U cherepah pozvonki tulovishnogo otdela srastayutsya so spinnym shitom pancirya vsledstvie chego nepodvizhny Cherep presmykayushihsya znachitelno bolee okostenevshij chem u zemnovodnyh Lish v i sluhovoj oblasti soderzhitsya nebolshoe kolichestvo hryasha Osevoj i visceralnyj otdely cherepa embrionalno formiruyutsya otdelno no u vzroslyh osobej srastayutsya v edinoe obrazovanie V sostav cherepa vhodyat kak hryashevye zameshayushie ili pervichnye tak i mnogochislennye kozhnye pokrovnye ili vtorichnye kosti Poyas perednih konechnostej shoden s poyasom zemnovodnyh otlichayas lish bolee silnym razvitiem okosteneniya Para perednih konechnostej reptilij sostoit iz plecha predplechya i kisti Para zadnih konechnostej iz bedra goleni i stopy Na falangah konechnostej raspolozheny kogti Myshechnaya sistema Myshechnaya sistema presmykayushihsya predstavlena zhevatelnoj shejnoj muskulaturoj muskulaturoj bryushnogo pressa a takzhe muskulaturoj sgibatelej i razgibatelej Prisutstvuyut harakternye dlya amniot mezhryobernye myshcy igrayushie vazhnuyu rol pri akte dyhaniya Podkozhnaya muskulatura pozvolyaet izmenyat polozhenie rogovyh cheshuj Energosnabzhenie proizvolnoj muskulatury sovremennyh presmykayushihsya proishodit glavnym obrazom za schyot anaerobnogo razlozheniya glyukozy poryadka 50 75 myshechnyh volokon v ih myshcah prisposobleny k rabote v anaerobnyh usloviyah bez uchastiya kisloroda Takoj metabolizm pozvolyaet im peremeshatsya na korotkie rasstoyaniya stol zhe bystro kak i teplokrovnym zhivotnym i obespechivaet dazhe bolshuyu silu sokrasheniya myshc prichyom intensivnost reakcii u mnogih grupp slabo zavisit ot temperatury tela Odnako uzhe cherez 1 2 minuty intensivnoj raboty muskulatury v anaerobnom rezhime v nej nakaplivaetsya molochnaya kislota chto privodit k nastupleniyu svoeobraznoj myshechnoj ustalosti i izmeneniyu pH krovi V rezultate uzhe posle neskolkih bystryh probezhek reptiliya stanovitsya prakticheski nesposobna k aktivnym dejstviyam na vremya ot neskolkih minut do neskolkih chasov trebuyusheesya dlya raspada nakopivshejsya v myshcah molochnoj kisloty Bolee krupnye zhivotnye sposobny dolshe terpet nakoplenie v myshcah molochnoj kisloty i takim obrazom fakticheski yavlyayutsya bolee vynoslivymi Krokodily sposobny vyderzhivat padenie pH krovi do 6 42 i nizhe Nekotorye sovremennye reptilii v chastnosti varany i kozhistaya cherepaha tem ne menee yavlyayutsya isklyucheniem iz etogo pravila v hode aktivnosti ih uroven metabolizma mozhet dostigat bolee poloviny ot takovogo u teplokrovnyh zhivotnyh sopostavimoj massy i oni v znachitelnoj mere polagayutsya na aerobnyj metabolizm pochti ne ispytyvaya problem s nakopleniem molochnoj kisloty Sredi vymershih drevnih reptilij izvestny vysokopodvizhnye formy takie kak arhozavry nazemnye krokodilomorfy dinozavry i pterozavry a takzhe lepidozavry mozazavry ihtiozavry i zavropterigii stroenie tela i predpolagaemyj obraz zhizni kotoryh govoryat o sposobnosti podderzhivat prodolzhitelnuyu myshechnuyu aktivnost bez utomleniya chto sootvetstvuet bolee intensivnomu chem u sovremennyh presmykayushihsya obmenu veshestv i rabote myshc preimushestvenno po aerobnomu mehanizmu trebuyushemu intensivnogo snabzheniya kislorodom Eto v svoyu ochered dolzhno bylo soprovozhdatsya sovershenno drugoj fiziologiej organizma polnoe razdelenie zheludochkov serdca povyshenie effektivnosti dyhaniya za schyot otdeleniya vozduhonosnyh putej ot rotovoj polosti poyavlenie effektivnyh mehanizmov termoregulyacii i tak dalee Dannye izmeneniya otchasti proslezhivayutsya na paleontologicheskom materiale v linii reptilij vedushej k pticam V nastoyashee vremya nadyozhno pokazano sushestvovanie teplokrovnosti kak minimum u nekotoryh grupp dinozavrov i predkov sovremennyh krokodilov a takzhe pleziozavrov mozazavrov i ihtiozavrov Nervnaya sistema Mozg alligatora Kak i u bolshinstva hordovyh zhivotnyh centralnaya nervnaya sistema presmykayushihsya predstavlena golovnym iz 5 otdelov i spinnym mozgom Golovnoj mozg raspolozhen vnutri cherepa Ryad vazhnyh osobennostej otlichaet golovnoj mozg presmykayushihsya ot golovnogo mozga zemnovodnyh Neredko govoryat kto o tak nazyvaemom zavropsidnom tipe golovnogo mozga prisushem takzhe i pticam v otlichie ot tipa u ryb i zemnovodnyh Vydelyayut pyat otdelov golovnogo mozga presmykayushihsya Perednij mozg sostoit iz dvuh bolshih polusharij ot kotoryh othodyat obonyatelnye doli Poverhnost bolshih polusharij absolyutno gladkaya V mozgovom svode polusharij razlichayut pervichnyj svod arhipallium zanimayushij bolshuyu chast kryshi polusharij i zachatki neopalliuma Dno perednego mozga v osnovnom sostoit iz polosatyh tel Promezhutochnyj mozg raspolozhen mezhdu perednim i srednim mozgom V verhnej ego chasti raspolozhen epifiz a na nizhnej storone gipofiz U bolshinstva yasheric i gatterii a takzhe u mnogih vymershih form ryadom s epifizom razvivaetsya temennoj glaz a u krokodilov poteryany oba etih organa Dno promezhutochnogo mozga zanyato zritelnymi nervami i ih perekrestom hiazmoj Srednij mozg predstavlen dvumya krupnymi perednimi holmami zritelnymi dolyami a takzhe nebolshimi zadnimi holmami Zritelnaya kora bolee razvita chem u amfibij Mozzhechok prikryvaet perednyuyu chast prodolgovatogo mozga On bolee krupnyj po sravneniyu s mozzhechkom amfibij Prodolgovatyj mozg obrazuet izgib v vertikalnoj ploskosti kotoryj harakteren dlya vseh amniot Ot golovnogo mozga othodyat 12 par cherepnyh nervov V spinnom mozge razdelenie na beloe i seroe veshestvo bolee otchyotlivo chem u amfibij Ot spinnogo mozga othodyat segmentalnye spinnomozgovye nervy obrazuya tipichnoe plechevoe i tazovoe spletenie Otchyotlivo vyrazhena vegetativnaya nervnaya sistema simpaticheskaya i parasimpaticheskaya v vide cepi parnyh nervnyh gangliev Organy chuvstv Glaz gekkona Presmykayushiesya imeyut shest osnovnyh organov chuvstv iz kotoryh zrenie imeet reshayushee znachenie Organ zreniya glaza ustroeny slozhnee chem u amfibij v sklere prisutstvuet kolco iz tonkih kostnyh plastinok ot zadnej stenki glaznogo yabloka othodit vyrost grebeshok vdayushijsya v steklovidnoe telo v resnichnom tele razvita poperechno polosataya muskulatura kotoraya pozvolyaet ne tolko peremeshat hrustalik no i izmenyat ego formu takim obrazom osushestvlyaya navodku na rezkost v processe akkomodacii Organy zreniya imeyut prisposobleniya k rabote v vozdushnoj srede Slyoznye zhelezy predohranyayut glaza ot vysyhaniya Naruzhnye veki i migatelnaya pereponka vypolnyayut zashitnuyu funkciyu U zmej i nekotoryh yasheric veki srastayutsya formiruya prozrachnuyu obolochku Setchatka glaza mozhet soderzhat kak palochki tak i kolbochki U nochnyh vidov kolbochki otsutstvuyut U bolshinstva dnevnyh vidov diapazon cvetnogo zreniya smeshyon v zhyolto oranzhevuyu chast spektra Forma zrachka chashe vsego kruglaya ili v vide vertikalnoj sheli kak u koshki gorizontalnyj shelevidnyj zrachok vesma rasprostranyonnyj u zemnovodnyh sredi reptilij vstrechaetsya ochen redko naprimer u pletevidnyh zmej Temennoj glaz sohranivshijsya u nekotoryh vidov vazhen dlya orientirovaniya v prostranstve i sinhronizacii sutochnyh ritmov organizma s ciklom smeny dnya i nochi hotya mnogoe v ego funkciyah eshyo neyasno Organ obonyaniya predstavlen vnutrennimi nozdryami hoanami i vomeronazalnym organom Po sravneniyu so stroeniem zemnovodnyh hoany raspolozheny blizhe k glotke chto dayot vozmozhnost svobodno dyshat v to vremya kak pisha nahoditsya vo rtu Obonyanie razvito luchshe chem u zemnovodnyh pozvolyaya mnogim yashericam nahodit pishu nahodyashuyusya pod poverhnostyu peska na glubine do 6 8 sm Organ vkusa vkusovye lukovicy raspolozhennye v osnovnom v glotke Organ teplovoj chuvstvitelnosti nahoditsya na licevoj yamke mezhdu glazom i nosom s kazhdoj storony golovy Osobenno razvit u zmej U yamkogolovyh zmej termolokatory pozvolyayut opredelyat dazhe napravlenie istochnika teplovogo izlucheniya Organ sluha blizok k organu sluha lyagushek on soderzhit vnutrennee i srednee uho snabzhyonnoe barabannoj pereponkoj sluhovoj kostochkoj stremenem i evstahievoj truboj Rol sluha v zhizni presmykayushihsya sravnitelno nevelika osobenno slab sluh u zmej ne imeyushih barabannoj pereponki i vosprinimayushih kolebaniya rasprostranyayushiesya po zemle ili v vode Presmykayushiesya vosprinimayut zvuki v diapazone 20 6000 Gc hotya bolshinstvo horosho slyshit lish v diapazone 60 200 Gc u krokodilov 100 3000 Gc Osyazanie vyrazheno otchyotlivo osobenno u cherepah kotorye mogut chuvstvovat dazhe lyogkoe prikosnovenie k panciryu Dyhatelnaya sistema Dlya presmykayushihsya harakterno dyhanie vsasyvayushego tipa putyom rasshireniya i suzheniya grudnoj kletki pri pomoshi mezhryobernoj i bryushnoj muskulatury Popavshij cherez gortan vozduh postupaet v traheyu dlinnuyu dyhatelnuyu trubku kotoraya na konce delitsya na bronhi vedushie v lyogkie Kak i u zemnovodnyh lyogkie presmykayushihsya imeyut meshkoobraznoe stroenie hotya ih vnutrennyaya struktura namnogo slozhnee Vnutrennie stenki lyogochnyh meshkov imeyut skladchatoe yacheistoe stroenie chto znachitelno uvelichivaet dyhatelnuyu poverhnost Stroenie lyogkih znachitelno otlichaetsya u raznyh vidov i mozhet predstavlyat slabodifferenciirovannye organy s malym kolichestvom yachej u primitivnyh vidov takih kak gatterii srednerazvitye organy s yarko vyrazhennoj vnutrennej strukturoj kak u bolshinstva cheshujchatyh tak i vysokorazvitye lyogkie imeyushie pochti gubchatoe stroenie kak u ptic i mlekopitayushih u takih reptilij kak varany tegu krokodily mnogie cherepahi i krupnye zmei Vodnye cherepahi imeyut bolee pronicaemuyu kozhu a nekotorye vidy dazhe izmenili svoyu kloaku chtoby uvelichit ploshad gazoobmena Dazhe s etimi adaptaciyami dyhanie nikogda polnostyu ne osushestvlyaetsya bez lyogkih Smena vozduha v lyogkih u kazhdoj osnovnoj gruppy reptilij osushestvlyaetsya po raznomu U cheshujchatyh lyogkie ventiliruyutsya pochti isklyuchitelno osevoj muskulaturoj Eto ta zhe samaya muskulatura kotoraya ispolzuetsya pri peredvizhenii Iz za etogo ogranicheniya bolshinstvo cheshujchatyh vynuzhdeny zaderzhivat dyhanie vo vremya intensivnyh probezhek Nekotorye odnako nashli sposob obojti eto Varanidy i nekotorye drugie vidy yasheric ispolzuyut bukkalnoe scezhivanie kak dopolnenie k ih obychnomu aksialnomu dyhaniyu Eto pozvolyaet zhivotnym polnostyu napolnyat svoi lyogkie vo vremya bega i takim obrazom dlitelnoe vremya ostavatsya aerobno aktivnymi Izvestno chto u yasheric tegu imeetsya otdelyayushaya lyogochnuyu polost ot visceralnoj Hotya na samom dele on ne sposoben k dvizheniyu on pozvolyaet silnee razduvat lyogkie snimaya ves vnutrennih organov s nih Poskolku telo pokryto cheshujkami u presmykayushihsya otsutstvuet isklyuchenie sostavlyayut myagkotelye cherepahi i morskie zmei i lyogkie yavlyayutsya edinstvennym dyhatelnym organom U vidov zhivushih v vode mogut poyavlyatsya specializirovannye adaptacii dlya togo chtoby obhoditsya dolshe bez atmosfernogo vozduha naprimer u morskih zmej eto slizistaya vystilka rta a u cherepah eto i polost rta i specialnye analnye meshki sposobnye usvaivat kislorod iz vody Krokodily na samom dele imeyut myshechnuyu diafragmu analogichnuyu diafragme mlekopitayushih Raznica v tom chto myshcy krokodilovoj diafragmy tyanut lobkovuyu kost chast taza podvizhnuyu u krokodilov nazad chto opuskaet pechen tem samym osvobozhdaya prostranstvo dlya rasshireniya lyogkih Etot tip diafragmalnoj ustanovki nazyvayut pechyonochnym porshnem Dyhatelnye puti obrazuyut ryad dvojnyh trubchatyh kamer v kazhdom lyogkom Pri vdohe i vydohe vozduh prohodit cherez dyhatelnye puti v odnom napravlenii sozdavaya takim obrazom odnonapravlennyj potok vozduha cherez lyogkie Analogichnaya sistema obnaruzhena u ptic varanov i iguan U bolshinstva reptilij net vtorichnogo neba a eto oznachaet chto oni dolzhny zaderzhivat dyhanie pri glotanii Krokodily razvili kostlyavoe vtorichnoe nyobo kotoroe pozvolyaet im prodolzhat dyshat ostavayas pod vodoj i zashishat svoj mozg ot povrezhdenij svyazannyh s borboj s dobychej Scinki semejstvo Scincidae takzhe v toj ili inoj stepeni razvili kostnoe vtorichnoe nebo Zmei ispolzovali drugoj podhod i vmesto etogo rasshirili svoi trahei Ih rasshirenie trahei torchit izo rta v vide trubki i pozvolyaet etim zhivotnym proglatyvat krupnuyu dobychu ne stradaya ot udushya Sistema krovoobrasheniya Sistema krovoobrasheniya presmykayushihsya Kak i amfibii bolshinstvo presmykayushihsya obladayut tryohkamernym serdcem sostoyashim iz zheludochka i dvuh predserdij Zheludochek razdelyon nepolnoj peregorodkoj na dve poloviny verhnyuyu i nizhnyuyu i mozhet byt uslovno razdelyon na tri otdela Odnako tryohkamernoe serdce reptilij razvilos nezavisimo ot takovogo u zemnovodnyh i razlichaetsya v plane stroeniya i inogda funkcionalnosti u raznyh sovremennyh grupp Vse lepidozavry i cherepahi imeyut tryohkamernoe serdce sostoyashee iz dvuh predserdij odnogo zheludochka s peremennymi peregorodkami i dvuh aort vedushih v bolshoj krug krovoobrasheniya Stepen smesheniya oksigenirovannoj i deoksigenirovannoj krovi v tryohkamernom serdce razlichna v zavisimosti ot vida i fiziologicheskogo sostoyaniya Pri razlichnyh usloviyah deoksigenirovannaya krov mozhet byt otpravlena obratno v organizm a nasyshennaya kislorodom krov mozhet byt otpravlena obratno v lyogkie Bylo vyskazano predpolozhenie chto eto izmenenie krovotoka obespechivaet bolee effektivnuyu termoregulyaciyu i bolee dlitelnoe vremya pogruzheniya dlya vodnyh vidov no ne bylo dokazano chto ono yavlyaetsya preimushestvom i dlya nazemnyh vidov Serdce iguany Buduchi arhozavrami krokodily obladayut chetyryohkamernym serdcem Peregorodka polnostyu razdelyaet zheludochek na dve poloviny pravuyu venoznuyu i levuyu arterialnuyu takim obrazom obosablivaya polnocennoe chetyryohkamernoe serdce kak u mlekopitayushih i ptic Lish posle obrazovaniya polnyh peregorodok u krokodilov obrazuetsya v hode embriogeneza dopuskayushee kontroliruemoe smeshivanie arterialnoj i venoznoj krovi chto svyazano so vtorichnym ponizheniem urovnya obmena veshestv u etoj gruppy zhivotnyh Krokodily imeyut anatomicheski chetyryohkamernoe serdce pohozhee na ptiche no takzhe imeyut dve aorty Naprimer serdce iguany kak i bolshinstvo cheshujchatyh serdec sostoit iz tryoh kamer s dvumya aortami i odnim zheludochkom serdechnymi neproizvolnymi myshcami Osnovnymi strukturami serdca yavlyayutsya venoznyj sinus voditel ritma levoe predserdie pravoe predserdie atrioventrikulyarnyj klapan venoznaya polost arterialnaya polost lyogochnaya polost myshechnyj greben ventrikulyarnyj greben lyogochnye veny i parnye dugi aorty Nekotorye vidy cheshujchatyh naprimer pitony i varany imeyut tryohkamernoe serdce kotoroe pri sokrashenii funkcionalno stanovitsya chetyryohkamernym Eto stalo vozmozhnym blagodarya myshechnomu grebnyu kotoryj razdelyaet zheludochek vo vremya diastoly zheludochkov i polnostyu razdelyaet ego vo vremya sistoly zheludochkov Iz za etogo grebnya nekotorye iz etih cheshuek sposobny sozdavat perepady davleniya v zheludochkah ekvivalentnye tem kotorye nablyudayutsya v serdcah mlekopitayushih i ptic Polnogo razdeleniya na dva nezavisimyh kruga krovoobrasheniya u presmykayushihsya ne proishodit poskolku venoznaya i arterialnaya krov smeshivayutsya v spinnoj aorte Podobno rybam i amfibiyam podavlyayushee bolshinstvo sovremennyh presmykayushihsya holodnokrovnye zhivotnye Nesmotrya na eto mnogie presmykayushiesya mogut regulirovat temperaturu peremeshayas iz teni na solnce i obratno ili menyaya cvet stanovyas temnee chtoby sogretsya ili svetlee chtoby ostyt Sravnitelno nedavno u yasheric tegu byla obnaruzhena fakultativnaya endotermiya vozmozhnost povyshat temperaturu tela vo vremya brachnogo perioda za schyot endotermicheskih himicheskih reakcij Varany v razgar pishevoj aktivnosti takzhe mogut povyshat temperaturu tela za schyot vnutrennih processov Kozhistaya cherepaha v svoyu ochered imeet izoliruyushuyu zhirovuyu proslojku i za schyot intensivnoj myshechnoj aktivnosti mozhet byt primerno na 18 gradusov teplee okruzhayushej eyo vody Metabolizm Sovremennye neptichi reptilii holodnokrovny tak chto oni imeyut ogranichennye fiziologicheskie sredstva podderzhaniya postoyannoj temperatury tela i chasto polagayutsya na vneshnie istochniki tepla Iz za menee stabilnoj vnutrennej temperatury chem u ptic i mlekopitayushih biohimiya reptilij trebuet fermentov sposobnyh sohranyat effektivnost v bolee shirokom diapazone temperatur chem v sluchae teplokrovnyh zhivotnye Optimalnyj diapazon temperatury tela zavisit ot vida no obychno nizhe chem u teplokrovnyh zhivotnyh dlya mnogih yasheric ona nahoditsya v diapazone 24 35 C 75 95 F v to vremya kak u ekstremalno adaptirovannyh k zhare vidov takih kak amerikanskaya pustynnaya iguana Dipsosaurus dorsalis mogut byt optimalnye fiziologicheskie temperatury dlya mlekopitayushih v diapazone ot 35 do 40 C ot 95 do 104 F V to vremya kak optimalnaya temperatura chasto nablyudaetsya kogda zhivotnoe aktivno nizkij osnovnoj obmen privodit k bystromu padeniyu temperatury tela kogda zhivotnoe neaktivno Kak i u vseh zhivotnyh myshechnaya deyatelnost reptilij proizvodit teplo U krupnyh reptilij takih kak kozhistye cherepahi nizkoe otnoshenie poverhnosti k obyomu pozvolyaet etomu metabolicheski vyrabatyvaemomu teplu derzhat zhivotnyh teplee chem ih okruzhayushaya sreda dazhe esli u nih net teplokrovnogo metabolizma Eta forma gomeotermii nazyvaetsya gigantotermiej bylo vyskazano predpolozhenie chto ona byla obychnym yavleniem u krupnyh dinozavrov i drugih vymershih krupnyh reptilij Preimushestvo nizkogo metabolizma v sostoyanii pokoya zaklyuchaetsya v tom chto dlya podderzhaniya funkcij organizma trebuetsya gorazdo menshe pishi Ispolzuya kolebaniya temperatury okruzhayushej sredy ili ostavayas holodnymi kogda im ne nuzhno dvigatsya reptilii mogut ekonomit znachitelnoe kolichestvo energii po sravneniyu s endotermicheskimi zhivotnymi togo zhe razmera Krokodilu trebuetsya ot odnoj desyatoj do odnoj pyatoj chasti pishi neobhodimoj lvu togo zhe vesa i on mozhet prozhit bez edy polgoda Bolee nizkie potrebnosti v pishe i adaptivnyj metabolizm pozvolyayut reptiliyam dominirovat v zhivotnoj zhizni v regionah gde dostupnost pishi slishkom mala dlya podderzhaniya krupnyh mlekopitayushih i ptic Prinyato schitat chto reptilii ne mogut proizvodit ustojchivo vysokij uroven energii neobhodimyj dlya pogoni na bolshie rasstoyaniya ili polyota Bolee vysokaya energeticheskaya yomkost mogla byt otvetstvenna za evolyuciyu teplokrovnosti u ptic i mlekopitayushih Odnako issledovanie korrelyacii mezhdu aktivnoj yomkostyu i termofiziologiej pokazyvaet slabuyu svyaz Bolshinstvo sovremennyh reptilij plotoyadnye zhivotnye so strategiej kormleniya sidi i zhdi neyasno yavlyayutsya li reptilii hladnokrovnymi iz za ih ekologii Energeticheskie issledovaniya nekotoryh reptilij pokazali chto ih aktivnye sposobnosti ravny ili prevoshodyat vozmozhnosti teplokrovnyh zhivotnyh analogichnogo razmera Pishevaritelnaya sistema Vsledstvie raznoobraziya dostupnoj pishi proyasnit pishevaritelnyj trakt u presmykayushihsya gorazdo bolee differencirovan chem u zemnovodnyh zhivotnyh Pishevaritelnaya sistema nachinaetsya rotovym otverstiem ogranichennym chelyustyami s obychno konicheskimi odinakovymi prochno prirastayushimi zubami gomodontnaya sistema hotya u nekotoryh vymershih form byla geterodontnaya U reptilij za isklyucheniem krokodilov i bolshinstva cherepah est gibkie nepodvizhnye guby plotno zakryvayushie rot i zuby v sostoyanii pokoya Zuby presmykayushihsya ne prednaznacheny dlya zhevaniya oni sluzhat dlya zahvata i uderzhaniya pishi rezhe dlya eyo razdeleniya ili otryvaniya udobnyh po razmeru kuskov u vidov pitayushihsya mollyuskami i nasekomymi zuby prisposobleny dlya drobleniya zhyostkih pokrovov etih zhivotnyh Pisha prakticheski vsegda proglatyvaetsya celikom kak zhivotnaya tak i rastitelnaya Yazyk svobodnyj vperedi muskulistyj podvizhnyj k koncu utonchaetsya i razdvaivaetsya U nekotoryh vidov yazyk klejkij i sluzhit dlya lovli dobychi Yazyk sluzhit dlya proglatyvaniya pishi no vidy s tonkim i dlinnym yazykom protalkivayut pishu v glotku tolchkami golovy yashericy ili dvizheniem chelyustej zmei Rotovaya polost otgranichena ot glotki razvivayushimsya vtorichnym kostnym nyobom u yasheric i cherepah polnostyu razvitym kostnym nebom u krokodilov no u zmej i varanov vtorichnoe kostnoe nebo otsutstvuet Mnogokletochnye slyunnye zhelezy soderzhat pishevaritelnye fermenty Glotka perehodit v uzkij no ochen rastyazhimyj pishevod dalee v muskulistyj zheludok i kishechnik Zheludok imeet tolstye myshechnye stenki Na granice mezhdu tonkoj i tolstoj kishkoj nahoditsya slepaya kishka kotoroj net u amfibij Bolshaya pechen reptilij imeet zhyolchnyj puzyr Podzheludochnaya zheleza v vide dlinnogo plotnogo tela lezhit v petle dvenadcatiperstnoj kishki Kishechnik zakanchivaetsya kloakoj Vydelitelnaya sistema Fekalii yashericy s kristallami mochevoj kisloty Vydelitelnaya sistema presmykayushihsya predstavlena pochkami mochetochnikami i mochevym puzyryom Pochki presmykayushihsya sushestvenno otlichayutsya ot pochek ryb i amfibij kotorym prihoditsya reshat zadachu izbavleniya ot postoyannogo izbytka vody v organizme Vmesto tulovishnyh pochek amfibij mezonefros pochki reptilij metanefros raspolagayutsya v tazovoj oblasti s bryushnoj storony kloaki i po eyo bokam Pochki soedinyayutsya s kloakoj cherez mochetochniki Tonkostennyj stebelchatyj mochevoj puzyr soedinyaetsya s kloakoj tonkoj shejkoj na eyo bryushnoj storone U nekotoryh presmykayushihsya mochevoj puzyr nedorazvit krokodily zmei nekotorye yashericy U nazemnyh reptilij v kachestve konechnogo produkta azotistogo obmena vystupaet slabo rastvorimaya v vode mochevaya kislota vydelyaemaya vmeste s kalom cherez kloaku chto pozvolyaet bolee effektivno sohranyat vlagu Polovaya sistema Presmykayushiesya razdelnopolye zhivotnye dvupoloe razmnozhenie Polovaya sistema samcov sostoit iz pary semennikov kotorye raspolozheny po bokam poyasnichnogo otdela pozvonochnika Ot kazhdogo semennika othodit kotoryj vpadaet v volfov kanal S poyavleniem tazovoj pochki u presmykayushihsya volfov kanal u samcov vystupaet lish kak semyaprovod i polnostyu otsutstvuet u samok Volfov kanal otkryvaetsya v kloaku obrazuya semennoj puzyryok Polovaya sistema samok predstavlena yaichnikami kotorye podvesheny na bryzhejke k spinnoj storone polosti tela po bokam pozvonochnika Yajcevody myullerovy kanaly takzhe podvesheny na bryzhejke V perednyuyu chast polosti tela yajcevody otkryvayutsya shelevidnymi otverstiyami voronkami Nizhnij konec yajcevodov otkryvaetsya v nizhnij otdel kloaki na eyo spinnoj storone Obraz zhizniRazvitie Oplodotvorenie vnutrennee Razvitie zarodysha proishodit v yajce s kozhistoj ili izvestkovoj obolochkoj naryadu s etim vstrechaetsya yajcezhivorozhdenie i rezhe istinnoe zhivorozhdenie U presmykayushihsya pryamoe postembrionalnoe razvitie Dlya mnogih predstavitelej harakterna zabota o potomstve v chastnosti samki krokodilov perenosyat potomstvo ot mesta kladki k vodoyomam v rotovoj polosti hotya v nekotoryh sluchayah mogut sest detyonysha Pitanie Bolshinstvo presmykayushihsya otnositsya k plotoyadnym zhivotnym vklyuchaya nasekomoyadnost i poedanie padali istinnoe hishnichestvo sredi sovremennyh reptilij svojstvenno tolko krokodilam ryadu yasheric i bolshinstvu zmej Dlya nekotoryh naprimer agamy iguany harakterno smeshannoe pitanie Inogda vstrechayutsya i pochti isklyuchitelno travoyadnye presmykayushiesya suhoputnye cherepahi Peredvizhenie Proterozuh rannij arhozavromorf s konechnostyami raspolozhennymi po bokam ot tulovisha kak u sovremennyh reptilij i prisposoblennymi k presmykaniyu To zhe raspolozhenie konechnostej u sovremennoj prytkoj yashericy Primitivnye gruppy drevnih amniot v tom chisle pervye reptilii iznachalno peredvigalis na chetyryoh shiroko rasstavlennyh v storony konechnostyah kotorye pri lokomocii razdvigalis medialateralno i ne byli sposobny postoyanno podderzhivat tulovishe nad zemlyoj otsyuda presmykanie volochenie zhivota po zemle davshee russkoyazychnoe nazvanie vsej etoj gruppe chto sootvetstvovalo harakternomu dlya nih nizkomu urovnyu intensivnosti obmena veshestv i sravnitelno malopodvizhnomu obrazu zhizni svyazannomu s cheredovaniem korotkih vspyshek aktivnosti i dlitelnogo otdyha lyozha na zhivote Sovremennye presmykayushiesya v osnovnom sohranyayut podobnyj bazalnyj v evolyucionnom plane harakter lokomocii nekotoroe isklyuchenie sostavlyayut tolko krokodily u kotoryh konechnosti pri bege mogut zanimat polozhenie pochti pod tulovishem Prichyom u nekotoryh vymershih grupp sovremennogo otryada krokodilov kotorye veli isklyuchitelno suhoputnyj obraz zhizni takoe polozhenie konechnostej bylo gabitualnym to est podderzhivalos bolshuyu chast vremeni v Avstralii takie nazemnye krokodily naprimer Kvinkana obitali eshyo 40 tys let nazad to est odnovremenno s chelovekom sovremennogo vida U varanov konechnosti poluvypryamleny chto svyazano s aktivnym peremesheniem i pri bege tulovishe nahoditsya vysoko nad zemlyoj Zmei i beznogie yashericy tak zhe yavlyaetsya isklyucheniem tak kak otsutstvie konechnostej i sovershenno inoj sposob lokomocii polzanie chem u reptilij s konechnostyami obespechivayut bystroe peremeshenie bolshinstvu zmej po lyuboj poverhnosti Bolshinstvo reptilij neploho plavayut za schyot ryboobraznogo izgibaniya tela v poperechnoj ploskosti U nekotoryh grupp prisposoblenie k vodnoj srede dostiglo bolee vysokoj stepeni prichyom v processe evolyucii u nih vyrabatyvalis razlichnye tipy lokomocii Tak ihtiozavry mozazavry i v menshej stepeni krokodily sohranili harakter plavaniya za schyot poperechnyh izgibov tulovisha S drugoj storony u morskih cherepah i vymershih pleziozavrov vyrabotalsya novyj mehanizm dvizheniya v vode za schyot vzmahov konechnostej preobrazovavshihsya v lasty Mnogie eti gruppy prakticheski polnostyu utratili sposobnost peremeshatsya na sushe Neskolko rodov presmykayushihsya sposobny k planiruyushemu polyotu naprimer letuchie drakony agamy roda Draco i ukrashennye drevesnye zmei Aktivno letayushie reptilii izvestny tolko iz iskopaemyh ostatkov sm Pterozavry V drevnosti razvitie nekotoryh prodvinutyh grupp reptilij shlo v inyh napravleniyah ih konechnosti stali peremeshatsya neposredstvenno pod tulovishe zanimaya bolee gabitualno vertikalnoe vypryamlennoe polozhenie chto sootvetstvovalo bolee podvizhnomu obrazu zhizni svyazannomu s bystrym begom i aktivnym presledovaniem dobychi Ornitozuh primitivnaya psevdozuhiya s konechnostyami prisposoblennymi k begu na dvuh nogah U predkov arhozavrov lobkovaya i sedalishnaya kosti nachali udlinyatsya perednie nogi ukorachivatsya a tyazhyolyj dlinnyj hvost prakticheski lishivshijsya podvizhnosti iz za srastaniya tazovyh kostej prevratilsya v balansir uravnoveshivayushij massu vytyanutogo tulovisha Zadnie konechnosti pri hodbe stali peremeshatsya v parasagittalnoj ploskosti golenostopnyj sustav poluchil vozmozhnost pruzhinit pri hodbe chto sposobstvovalo bolee ekonomnomu rashodu sil a opora peremestilas na srednij tretij palec Eto pozvolilo mnogim gruppam tekodontov perejti k fakultativnoj ili dazhe gabitualnoj bipedalnosti podobno sovremennym begayushim pticam specializirovavshis na bege na dvuh nogah Dannye izmeneniya dolzhny byli soprovozhdatsya znachitelnym povysheniem intensivnosti obmena veshestv poskolku postoyannoe podderzhanie tela nad zemlyoj i dlitelnaya lokomotornaya aktivnost trebovali namnogo bolshih energozatrat po sravneniyu s presmykaniem Odnako prosledit podobnye izmeneniya na paleontologicheskom materiale slozhno Dostoverno izvestno odnako chto potomki dannoj gruppy reptilij pticy imeyut intensivnyj obmen veshestv i endotermnuyu sistemu termoregulyacii teplokrovnost Rannie dinozavry kak yasherotazovye tak i pticetazovye byli aktivnymi hishnikami kak minimum chast vremeni peredvigavshimisya na zadnih konechnostyah chto sposobstvovalo ih bystromu progressu osobenno posle vymiraniya bolshinstva sinapsidov na rubezhe permskogo i triasovogo perioda V yurskom periode pochti vse bolee menee krupnye nazemnye zhivotnye svyshe metra v dlinu byli dinozavrami Postepenno chast dinozavrov perehodit na rastitelnuyu pishu zanimaya osvobodivshiesya ekologicheskie nishi Bolshinstvo rastitelnoyadnyh vidov vnov vozvrashaetsya k peredvizheniyu na chetyryoh konechnostyah evolyuciya zhe hishnikov prodolzhaet idti po dvunogomu puti naprimer u tirannozavrid i abelizavrid perednie konechnosti okazalis prakticheski reducirovanny a u maniraptorov naprotiv razvilis v specializirovannuyu hvatatelnuyu formu V techenie 140 mln let vplot do konca melovogo perioda osnovnymi nazemnymi hishnymi pozvonochnymi byli dvunogie dinozavry nekotorye formy kotoryh po bolshinstvu priznakov neotlichimy ot ptic Kak vidno istoricheski dlya reptilij bylo svojstvenno glavnym obrazom imenno aktivnoe peredvizhenie na dvuh ili chetyryoh vypryamlennyh konechnostyah imenno takie begayushie formy zanimali gospodstvuyushee polozhenie v dannom klasse parafileticheskoj gruppe zhivotnyh na protyazhenii bolshej chasti ego istorii Dvunogie hishnye formy izredka voznikali u ptic naprimer fororakosy V nastoyashee vremya podobnye formy sredi reptilij ne voznikayut poskolku ekologicheskie nishi svyazannye s aktivnym presledovaniem dobychi nyne zanyaty mlekopitayushimi i organizm sovremennyh reptilij trebuet znachitelnoj perestrojki dlya ih osvoeniya Nekotoroe isklyuchenie sostavlyaet nasekomoyadnaya plashenosnaya yasherica i nekotorye drugie agamovye sposobnye k begu na dvuh nogah pri sohranenii raspolozheniya konechnostej po bokam ot tulovisha Takaya osobennost pozvolyaet im obhodit ogranichenie Karriera nevozmozhnost bezhat na chetyryoh nogah i dyshat odnovremenno i aktivno presledovat dobychu ili spasatsya ot hishnikov Yasherica shlemonosnyj vasilisk vo vremya bipedalnoj lokomocii sposobna takzhe begat po poverhnosti vody Tegu i varany takzhe nauchilis obhodit ogranichenie Karriera no za schyot modifikacii dyhatelnoj sistemy a ne podyoma na zadnie konechnosti Izdavaemye zvukiBolshinstvo reptilij ne imeet nastoyashego golosovogo apparata i proizvodyat lish samye primitivnye zvuki vrode shipeniya ili svista Krokodily rychat izdayut layushie i rokochushie zvuki detyonyshi kvakayut Cherepahi v nekotoryh sluchayah ispug brachnyj sezon bol mogut izdavat pisk ili ston Predstaviteli gekkonovyh yasheric izdayut samye raznye zvuki pisk vizg shebet shelchki kriki Hozyajstvennoe znachenieZnachenie presmykayushihsya dlya cheloveka sravnitelno neveliko Kozha krokodilov krupnyh zmej i yasheric primenyaetsya v kozhevennoj promyshlennosti dlya izgotovleniya chemodanov remnej obuvi i t p odnako eti predmety nosyat eksklyuzivnyj harakter yavlyayas predmetom roskoshi Myaso i yajca mnogih cherepah upotreblyayutsya v pishu Takzhe mogut upotreblyatsya v pishu nekotorye yashericy i zmei Zmeinyj yad nahodit primenenie v medicine Mnogie zmei polezny istrebleniem gryzunov a yashericy nasekomyh Nekotorye vidy presmykayushihsya derzhat v kachestve domashnih zhivotnyh Alligatory kajmany i nekotorye krokodily inogda razvodyatsya na specialnyh fermah dlya polucheniya myasa yaic i kozhi Bolshuyu opasnost dlya lyudej predstavlyayut yadovitye zmei osobenno v tropicheskih stranah Mnogie krokodily opasny dlya cheloveka nanosyat znachitelnyj usherb zhivotnovodstvu Presnovodnye cherepahi vredyat rybnomu promyslu Krupnye varany pitony i udavy tak zhe mogut byt opasny buduchi sposobnymi travmirovat ili dazhe ubit cheloveka Modelnye obektyV 2011 godu byl rasshifrovan genom presmykayushegosya yashericy anolis karolinskij Takim obrazom eto presmykayusheesya voshlo v krug modelnyh obektov genetiki Sm takzhePresmykayushiesya opisannye v 2010 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