[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.jamfolk.cz\/jak-se-vyvinula-u-zvirat-srst\/#Article","mainEntityOfPage":"https:\/\/www.jamfolk.cz\/jak-se-vyvinula-u-zvirat-srst\/","headline":"Jak se vyvinula u zv\u00ed\u0159at srst","name":"Jak se vyvinula u zv\u00ed\u0159at srst","description":"Dnes je ji\u017e v\u0161eobecn\u011b zn\u00e1mo, \u017ee \u017eivot za\u010dal v\u00a0mo\u0159\u00edch a oce\u00e1nech, kde tak\u00e9 dlouhou dobu setrv\u00e1val. V\u00a0t\u00e9 dob\u011b nebylo pot\u0159eba \u017e\u00e1dn\u00e9 speci\u00e1ln\u00ed ochrany proti nep\u0159\u00edzni po\u010das\u00ed, jeliko\u017e...","datePublished":"2022-12-30","dateModified":"2022-12-30","author":{"@type":"Person","@id":"https:\/\/www.jamfolk.cz\/author\/#Person","name":"","url":"https:\/\/www.jamfolk.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/82449f5dd313bdc88befc1a2d3138ce45c5e7d5eeee84221e3cf7fbc184b80d3?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/82449f5dd313bdc88befc1a2d3138ce45c5e7d5eeee84221e3cf7fbc184b80d3?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"jamfolk.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.jamfolk.cz\/wp-content\/uploads\/zoo2_5.jpg","url":"https:\/\/www.jamfolk.cz\/wp-content\/uploads\/zoo2_5.jpg","height":0,"width":0},"url":"https:\/\/www.jamfolk.cz\/jak-se-vyvinula-u-zvirat-srst\/","about":["Zv\u00ed\u0159ata"],"wordCount":414,"articleBody":"Dnes je ji\u017e v\u0161eobecn\u011b zn\u00e1mo, \u017ee \u017eivot za\u010dal v\u00a0mo\u0159\u00edch a oce\u00e1nech, kde tak\u00e9 dlouhou dobu setrv\u00e1val. V\u00a0t\u00e9 dob\u011b nebylo pot\u0159eba \u017e\u00e1dn\u00e9 speci\u00e1ln\u00ed ochrany proti nep\u0159\u00edzni po\u010das\u00ed, jeliko\u017e v\u00a0mo\u0159i jsou podm\u00ednky stabiln\u00ed \u2013 to byl tak\u00e9 jeden z\u00a0d\u016fvod\u016f, pro\u010d \u017eivot za\u010dal pr\u00e1v\u011b zde.\u00a0I zde se v\u0161ak uk\u00e1zala nutnost br\u00e1nit se p\u0159ed jin\u00fdmi organismy. Proto si tak\u00e9 prvn\u00ed tvorov\u00e9 vytvo\u0159ili na povrchu t\u011bla schr\u00e1nky, obratlovci pak pozd\u011bji tuhou k\u016f\u017ei, kterou n\u00e1sledn\u011b v\u00a0mnoha p\u0159\u00edpadech nahradily \u0161upiny.\u00a0\u00a0Ty p\u0159etrvaly i v\u00a0moment, kdy se \u017eivot roz\u0161\u00ed\u0159il z\u00a0vody na pevninu. Zde v\u0161ak bylo pot\u0159eba n\u011bco v\u00edc. Podm\u00ednky se zde toti\u017e m\u011bnily mnohem v\u00edce, ne\u017e na co byly organismy doposud zvykl\u00e9. Pokud tedy cht\u011bly tohoto nov\u00e9ho prostoru vyu\u017e\u00edt, musely se p\u0159izp\u016fsobit.\u00a0Zde \u0161el v\u00fdvoj v\u00a0podstat\u011b dv\u011bma cestami. Jednou z\u00a0nich bylo vytvo\u0159en\u00ed jak\u00e9hosi p\u016fvodn\u00edho pe\u0159\u00ed. To vzniklo postupnou p\u0159em\u011bnou p\u016fvodn\u00edch \u0161upin, kter\u00e9 se prodlou\u017eily, zm\u011bk\u010dily a na konci rozt\u0159epily. Druhou cestou pak bylo vytvo\u0159en\u00ed srsti.\u00a0\u00a0Ta m\u011bla oproti pe\u0159\u00ed sv\u00e9 v\u00fdhody, p\u0159edev\u0161\u00edm pak lep\u0161\u00ed izola\u010dn\u00ed vlastnosti. Nav\u00edc l\u00e9pe p\u0159il\u00e9hala k\u00a0t\u011blu, tak\u017ee umo\u017e\u0148ovala lep\u0161\u00ed pohyb. A to bylo pro mal\u00e9, hbit\u00e9 no\u010dn\u00ed \u017eivo\u010dichy, jak\u00fdmi byli prap\u016fvodn\u00ed savci, \u017eivotn\u011b d\u016fle\u017eit\u00e9.\u00a0Samoz\u0159ejm\u011b se nevyvinula najednou. Vedla k\u00a0n\u00ed velmi dlouh\u00e1 cesta, av\u0161ak, jak se uk\u00e1zalo, nakonec velmi \u00fasp\u011b\u0161n\u00e1, kdy\u017e vezmeme v\u00a0\u00favahu, kolik r\u016fzn\u00fdch typ\u016f m\u00e1me. Sta\u010d\u00ed si jen p\u0159edstavit ov\u010d\u00ed vlnu, m\u011bkk\u00fd ko\u017eich psa \u010di t\u0159eba je\u017e\u010d\u00ed bodliny.\u00a0Je pravdou, \u017ee i my lid\u00e9 m\u00e1me na t\u011ble zbytky srsti, by\u0165 ji naz\u00fdv\u00e1me vlasy \u010di ochlupen\u00ed, podle toho, kde se nach\u00e1z\u00ed. To dokazuje mimo jin\u00e9 i to, \u017ee na\u0161i d\u00e1vn\u00ed p\u0159edkov\u00e9 byli skute\u010dn\u011b osrst\u011bn\u00ed. Pro n\u00e1s se v\u0161ak uk\u00e1zalo v\u00fdhodn\u011bj\u0161\u00ed se v\u011bt\u0161iny t\u00e9to pokr\u00fdvky t\u011bla zbavit, abychom se l\u00e9pe potili a z\u00edskali tak v\u011bt\u0161\u00ed vytrvalost. A je to tak\u00e9 jeden z\u00a0d\u016fvod\u016f, pro\u010d jsme se dostali a\u017e na vrchol evolu\u010dn\u00edho \u017eeb\u0159\u00ed\u010dku.                                                                                                                                                                                                                                                                                                                                                                                        3.3\/5 - (3 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jak se vyvinula u zv\u00ed\u0159at srst","item":"https:\/\/www.jamfolk.cz\/jak-se-vyvinula-u-zvirat-srst\/#breadcrumbitem"}]}]