Ptakopysk, zn\u00e1m\u00fd tak\u00e9 jako je\u017eura australsk\u00e1, je fascinuj\u00edc\u00ed vejcorod\u00fd savec poch\u00e1zej\u00edc\u00ed z Austr\u00e1lie a Nov\u00e9 Guiney. Vejcorod\u00ed savci jsou unik\u00e1tn\u00ed skupina savc\u016f, kte\u0159\u00ed kladou vejce m\u00edsto toho, aby rodili \u017eiv\u00e1 ml\u00e1\u010fata. Ptakopysk je jedn\u00edm ze dvou \u017eij\u00edc\u00edch druh\u016f vejcorod\u00fdch savc\u016f, druh\u00fdm je je\u017eura australsk\u00e1.<\/p>\n\n
Ptakopyskov\u00e9 se vyzna\u010duj\u00ed sv\u00fdmi zavalit\u00fdmi t\u011bly pokryt\u00fdmi obrann\u00fdmi ostny. Maj\u00ed dlouh\u00fd, \u0161t\u00edhl\u00fd zob\u00e1k, kter\u00fd pou\u017e\u00edvaj\u00ed k vyhrab\u00e1v\u00e1n\u00ed termit\u016f, mravenc\u016f a \u010derv\u016f. Ptakopyskov\u00e9 nemaj\u00ed zuby, tak\u017ee pou\u017e\u00edvaj\u00ed sv\u00e9 dlouh\u00e9 jazyky k rozm\u011bln\u011bn\u00ed potravy o patro.<\/p>\n\n
Existuj\u00ed dva druhy ptakopysk\u016f: ptakopysk poloopstrovn\u00ed (Tachyglossus aculeatus) a ptakopysk dlouhonos\u00fd (Zaglossus bruijni). Ptakopysk poloopstrovn\u00ed se vyskytuje v cel\u00e9 Austr\u00e1lii a Nov\u00e9 Guineji a je dob\u0159e p\u0159izp\u016fsoben \u0161irok\u00e9 \u0161k\u00e1le stanovi\u0161\u0165. Ptakopysk dlouhonos\u00fd se v\u0161ak vyskytuje pouze v tropick\u00fdch de\u0161tn\u00fdch les\u00edch Nov\u00e9 Guiney a je pova\u017eov\u00e1n za ohro\u017een\u00fd druh kv\u016fli ztr\u00e1t\u011b p\u0159irozen\u00e9ho prost\u0159ed\u00ed a lovu.<\/p>\n\n
Ptakopyskov\u00e9 jsou samot\u00e1\u0159sk\u00e1 zv\u00ed\u0159ata, kter\u00e1 tr\u00e1v\u00ed v\u011bt\u0161inu \u010dasu hled\u00e1n\u00edm potravy. Nejsou p\u0159\u00edli\u0161 dob\u0159\u00ed v b\u011bhu, tak\u017ee spol\u00e9haj\u00ed na sv\u00e9 ostr\u00e9 ostny a schopnost svinout se do klub\u00ed\u010dka, aby se chr\u00e1nili p\u0159ed pred\u00e1tory. Ptakopyskov\u00e9 maj\u00ed tak\u00e9 extra dlouh\u00fd dr\u00e1p na jednom prstu, kter\u00fd pou\u017e\u00edvaj\u00ed k \u010di\u0161t\u011bn\u00ed mezi sv\u00fdmi ostny.<\/p>\n\n
Kdy\u017e ptakopysk naraz\u00ed na pred\u00e1tora nebo nep\u0159\u00edtele, obvykle se sto\u010d\u00ed do klub\u00ed\u010dka a vystr\u010d\u00ed sv\u00e9 ostr\u00e9 ostny ven. M\u016f\u017ee se tak\u00e9 zakl\u00ednit do prostoru pod sk\u00e1lou nebo se zahrabat do zem\u011b, aby unikl.<\/p>\n\n
Stejn\u011b jako v\u0161ichni vejcorod\u00ed savci kladou ptakopyskov\u00e9 vejce. Samice ptakopyska kladou jedno vejce ro\u010dn\u011b, kter\u00e9 uchov\u00e1vaj\u00ed ve vaku na b\u0159i\u0161e. Vejce se vyl\u00edhne asi po 10 dnech a ml\u00e1d\u011b ptakopyska, kter\u00e9 se naz\u00fdv\u00e1 ml\u00e1d\u011b, z\u016fst\u00e1v\u00e1 ve vaku n\u011bkolik m\u011bs\u00edc\u016f, dokud se pln\u011b nevyvine.<\/p>\n\n
Prvn\u00edm z\u00e1padn\u00edm \u010dlov\u011bkem, kter\u00fd se setkal s ptakopyskem a napsal o n\u011bm, byl William Bligh, nechvaln\u011b zn\u00e1m\u00fd kapit\u00e1n lodi Bounty. V roce 1792 zastavila Blighsova lo\u010f na Tasm\u00e1nii cestou na Tahiti. Bligh popsal ptakopyska jako zv\u00ed\u0159e s \u201ezob\u00e1kem jako kachna\u201c a \u201ehustou hn\u011bdou srst\u00ed, p\u0159es kterou vy\u010dn\u00edvaly hroty \u010detn\u00fdch ostn\u016f dlouh\u00fdch jeden palec\u201c.<\/p>\n\n
Ptakopysk nen\u00ed jedin\u00fdm vejcorod\u00fdm savcem na sv\u011bt\u011b. Druh\u00fdm vejcorod\u00fdm savcem je je\u017eura australsk\u00e1, kter\u00e1 se tak\u00e9 vyskytuje v Austr\u00e1lii. Je\u017eury jsou podobn\u00e9 ptakopysk\u016fm v tom, \u017ee kladou vejce a maj\u00ed dlouh\u00fd zob\u00e1k, ale vyzna\u010duj\u00ed se tak\u00e9 sv\u00fdm jedine\u010dn\u00fdm kachn\u00edm zob\u00e1kem.<\/p>\n\n
Ptakopysk je fascinuj\u00edc\u00ed a jedine\u010dn\u00fd vejcorod\u00fd savec, kter\u00fd je d\u016fle\u017eitou sou\u010d\u00e1st\u00ed ekosyst\u00e9m\u016f Austr\u00e1lie a Nov\u00e9 Guiney. Jeho neobvykl\u00e9 fyzick\u00e9 vlastnosti, chov\u00e1n\u00ed a reproduk\u010dn\u00ed strategie z n\u011bj d\u011blaj\u00ed poutav\u00fd objekt pro studium a pozorov\u00e1n\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"
Co je to ptakopysk? Unik\u00e1tn\u00ed vejcorod\u00fd savec z Austr\u00e1lie a Nov\u00e9 Guiney \u00davod Ptakopysk, zn\u00e1m\u00fd tak\u00e9 jako je\u017eura australsk\u00e1, je fascinuj\u00edc\u00ed vejcorod\u00fd savec poch\u00e1zej\u00edc\u00ed z Austr\u00e1lie a Nov\u00e9 Guiney. Vejcorod\u00ed…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[949],"tags":[1341,254,19569,19571,19570,252,19568],"class_list":["post-14576","post","type-post","status-publish","format-standard","hentry","category-wildlife","tag-australia","tag-wildlife","tag-monotreme","tag-spiny-anteater","tag-new-guinea","tag-nature","tag-echidna"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/14576","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=14576"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/14576\/revisions"}],"predecessor-version":[{"id":14577,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/14576\/revisions\/14577"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=14576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=14576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=14576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}