[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.tfinal.sk\/co-mozno-neviete-o-dazdovkach\/#Article","mainEntityOfPage":"https:\/\/www.tfinal.sk\/co-mozno-neviete-o-dazdovkach\/","headline":"\u010co mo\u017eno neviete o d\u00e1\u017e\u010fovk\u00e1ch","name":"\u010co mo\u017eno neviete o d\u00e1\u017e\u010fovk\u00e1ch","description":"– Predpoklad\u00e1 sa, \u017ee existuje a\u017e 4 400 druhov d\u00e1\u017e\u010foviek. – Ako d\u00e1\u017e\u010fovka tr\u00e1vi v\u00e4\u010d\u0161inu svojho \u017eivota pod zemou, v\u0155tan\u00edm sa cez p\u00f4du a vytv\u00e1ran\u00edm zlo\u017eit\u00fdch siet\u00ed (ktor\u00e9 sa m\u00f4\u017eu rozklada\u0165 2 alebo viac metrov pod povrchom), ich tel\u00e1 s\u00fa podobn\u00e9 trubici svalov usporiadan\u00fa v dvoch vrstv\u00e1ch. Jedna vrstva vl\u00e1kien prebieha pozd\u013a\u017ene a \u010fal\u0161ia je … ","datePublished":"2018-01-12","dateModified":"2023-04-26","author":{"@type":"Person","@id":"https:\/\/www.tfinal.sk\/author\/#Person","name":"","url":"https:\/\/www.tfinal.sk\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/93f351f97d5e20a41105810347d62b8b573eebe9313df1f71432877ed17f5f1a?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/93f351f97d5e20a41105810347d62b8b573eebe9313df1f71432877ed17f5f1a?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"tfinal.sk","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.tfinal.sk\/wp-content\/uploads\/img_a285715_w16486_t1520879732.jpg","url":"https:\/\/www.tfinal.sk\/wp-content\/uploads\/img_a285715_w16486_t1520879732.jpg","height":0,"width":0},"url":"https:\/\/www.tfinal.sk\/co-mozno-neviete-o-dazdovkach\/","about":["Zvierat\u00e1"],"wordCount":387,"articleBody":"– Predpoklad\u00e1 sa, \u017ee existuje a\u017e 4 400 druhov d\u00e1\u017e\u010foviek. – Ako d\u00e1\u017e\u010fovka tr\u00e1vi v\u00e4\u010d\u0161inu svojho \u017eivota pod zemou, v\u0155tan\u00edm sa cez p\u00f4du a vytv\u00e1ran\u00edm zlo\u017eit\u00fdch siet\u00ed (ktor\u00e9 sa m\u00f4\u017eu rozklada\u0165 2 alebo viac metrov pod povrchom), ich tel\u00e1 s\u00fa podobn\u00e9 trubici svalov usporiadan\u00fa v dvoch vrstv\u00e1ch. Jedna vrstva vl\u00e1kien prebieha pozd\u013a\u017ene a \u010fal\u0161ia je usporiadan\u00e1 na \u0161\u00edrku ako korzet okolo tela. Utiahnutie tak\u00e9hoto korzetu sp\u00f4sobuje, \u017ee hlava \u010derva sa pos\u00fava dopredu. Vlna kontrakci\u00ed potom prech\u00e1dza sp\u00e4\u0165 dole po tele, vytl\u00e1\u010daj\u00fac \u010derva viac dopredu. – D\u00e1\u017e\u010fovky maj\u00fa pozd\u013a\u017e tela mali\u010dk\u00e9 \u0161tetinky, ktor\u00e9 mu pom\u00e1haj\u00fa pri zovieran\u00ed, a povlak z klzk\u00e9ho hlienu, \u010do umo\u017e\u0148uje \u010dervovi prech\u00e1dza\u0165 aj cez najtvrd\u0161iu zem. – D\u00e1\u017e\u010fovky maj\u00fa tenk\u00fa ko\u017eu a nemaj\u00fa \u017eiadnu odolnos\u0165 vo\u010di ultrafialov\u00e9mu \u017eiareniu slnka, tak\u017ee denn\u00e9 svetlo m\u00f4\u017ee by\u0165 pre ne smrte\u013en\u00e9, a zvy\u010dajne sa na povrchu vyskytuj\u00fa iba v mokrom po\u010das\u00ed. – D\u00e1\u017e\u010fovky ukotvuj\u00fa svoj chvost v d\u00fap\u00e4ti, a pri akomko\u013evek n\u00e1znaku nebezpe\u010denstva vlez\u00fa nasp\u00e4\u0165 pod zem. – D\u00e1\u017e\u010fovky s\u00fa hermafrodity. Ka\u017ed\u00fd z nich m\u00e1 mu\u017esk\u00e9 i \u017eensk\u00e9 pohlavn\u00e9 org\u00e1ny. Nem\u00f4\u017eu v\u0161ak sami seba oplodni\u0165. Musia sa spoji\u0165 s in\u00fdm \u010dervom, aby si mohli vymie\u0148a\u0165 genetick\u00fd materi\u00e1l. – D\u00e1\u017e\u010fovky sa navz\u00e1jom pri\u0165ahuj\u00fa v\u00f4\u0148ou. Ich p\u00e1riaci ritu\u00e1l zah\u0155\u0148a dva \u010dervy le\u017eiace natiahnut\u00e9 ved\u013ea seba od hlavy po chvost na povrchu p\u00f4dy a v\u00fdmenu spermi\u00ed pomocou hlienu, ktor\u00fd pokr\u00fdva ich tel\u00e1. – D\u00e1\u017e\u010fovky m\u00f4\u017eu nakl\u00e1s\u0165 a\u017e 20 vajec, ktor\u00e9 s\u00fa spojen\u00e9, aby vytvorili kok\u00f3n a ktor\u00e9 m\u00f4\u017eu pre\u017ei\u0165 extr\u00e9mne po\u010dasie, ale zvy\u010dajne sa z neho narod\u00ed iba jeden jedinec. – Ak d\u00e1\u017e\u010fovka strat\u00ed jeden koniec svojho tela, m\u00f4\u017ee mu nar\u00e1s\u0165 n\u00e1hradn\u00fd, av\u0161ak ak je rozrezan\u00fd na polovicu, zomrie. Nestane sa dvoma nov\u00fdmi \u010dervami. – Niektor\u00ed z\u00e1hradn\u00edci otr\u00e1via d\u00e1\u017e\u010fovky, aby eliminovali ich trus. To po\u0161kodzuje tr\u00e1vnik, zvierat\u00e1 a vt\u00e1ky, ktor\u00e9 jedia \u010dervy, viac ako samotn\u00fa popul\u00e1ciu d\u00e1\u017e\u010foviek. – Fosilizovan\u00e9 \u010dervy, podobn\u00e9 d\u00e1\u017e\u010fovk\u00e1m, sa na\u0161li v skal\u00e1ch star\u00fdch 600 mili\u00f3nov rokov.                                                                                                                                                                                                                                                                                                                                                                                        4\/5 - (5 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"\u010co mo\u017eno neviete o d\u00e1\u017e\u010fovk\u00e1ch","item":"https:\/\/www.tfinal.sk\/co-mozno-neviete-o-dazdovkach\/#breadcrumbitem"}]}]