[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.agia.cz\/krvavi-zabijaci-na-ustupu\/#Article","mainEntityOfPage":"https:\/\/www.agia.cz\/krvavi-zabijaci-na-ustupu\/","headline":"Krvav\u00ed zabij\u00e1ci na \u00fastupu","name":"Krvav\u00ed zabij\u00e1ci na \u00fastupu","description":"\u017draloci se \u0159ad\u00ed mezi paryby je\u0161t\u011b s\u00a0rejnoky a chim\u00e9rami. Na Zemi se nach\u00e1z\u00ed p\u0159es 350 milion\u016f let a byli tu pravd\u011bpodobn\u011b je\u0161t\u011b p\u0159ed dinosaury. Film, kter\u00fd vzru\u0161il strach okolo \u017eralok\u016f se naz\u00fdv\u00e1 \u010celisti. Av\u0161ak tito savci ne\u00fato\u010d\u00ed na \u010dlov\u011bka pokud k\u00a0tomu nemaj\u00ed p\u00e1dn\u00fd d\u016fvod, v\u011bt\u0161inou rad\u0161i odplavou do bezpe\u010d\u00ed. Vyskytuj\u00ed se ve v\u011bt\u0161in\u011b ze sv\u011btov\u00fdch […]","datePublished":"2019-06-09","dateModified":"2023-05-03","author":{"@type":"Person","@id":"https:\/\/www.agia.cz\/author\/#Person","name":"","url":"https:\/\/www.agia.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/232437c79d6ebbb41eb67b1526ce0bc08ee5047d6b1594dc05abcc3258d8e0b3?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/232437c79d6ebbb41eb67b1526ce0bc08ee5047d6b1594dc05abcc3258d8e0b3?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"agia.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.agia.cz\/wp-content\/uploads\/img_a347091_w2630_t1561277624.jpg","url":"https:\/\/www.agia.cz\/wp-content\/uploads\/img_a347091_w2630_t1561277624.jpg","height":0,"width":0},"url":"https:\/\/www.agia.cz\/krvavi-zabijaci-na-ustupu\/","about":["Zv\u00ed\u0159ata"],"wordCount":589,"articleBody":"\u017draloci se \u0159ad\u00ed mezi paryby je\u0161t\u011b s\u00a0rejnoky a chim\u00e9rami. Na Zemi se nach\u00e1z\u00ed p\u0159es 350 milion\u016f let a byli tu pravd\u011bpodobn\u011b je\u0161t\u011b p\u0159ed dinosaury. Film, kter\u00fd vzru\u0161il strach okolo \u017eralok\u016f se naz\u00fdv\u00e1 \u010celisti. Av\u0161ak tito savci ne\u00fato\u010d\u00ed na \u010dlov\u011bka pokud k\u00a0tomu nemaj\u00ed p\u00e1dn\u00fd d\u016fvod, v\u011bt\u0161inou rad\u0161i odplavou do bezpe\u010d\u00ed. Vyskytuj\u00ed se ve v\u011bt\u0161in\u011b ze sv\u011btov\u00fdch oce\u00e1n\u016f. N\u011bkte\u0159\u00ed dok\u00e1\u017e\u00ed \u017e\u00edt i v\u00a0brakick\u00fdch vod\u00e1ch. To je m\u00edsto, kde se slan\u00e1 voda mis\u00ed se sladkou.\tT\u011blo \u017eralok\u016f je pokryto ostr\u00fdmi \u0161upinami s\u00a0torp\u00e9dovit\u00fdm tvarem. Kostra nen\u00ed tvo\u0159ena kostmi, ale chrupavkami. Tak\u00e9 zde plat\u00ed, \u017ee pokud se \u017eralok nepohybuje, m\u016f\u017ee um\u0159\u00edt. Nemaj\u00ed plynov\u00fd m\u011bch\u00fd\u0159 ani plicn\u00ed vaky. L\u00e1tka, kter\u00e1 jim pom\u00e1h\u00e1 s\u00a0nadleh\u010dov\u00e1n\u00edm t\u011bla ve vod\u011b, je skvalen.\tV\u00a0tlam\u011b maj\u00ed okolo 3000 zub\u016f uspo\u0159\u00e1dan\u00fdch do \u0161esti a\u017e dvaceti \u0159ad, p\u0159es jejich \u017eivot jim vypad\u00e1vaj\u00ed a znovu se obnovuj\u00ed.\tMaj\u00ed dob\u0159e vybaven\u00fd sluch, zrak a \u010dich. Tzv. Lorenziniho ampule, kter\u00e1 se nach\u00e1z\u00ed pod rypcem \u017eraloka, vn\u00edm\u00e1 tepeln\u00e9 a tlakov\u00e9 zm\u011bny. Dal\u0161\u00ed d\u016fle\u017eit\u00fd smyslem je postrann\u00ed \u010d\u00e1ra. Funkce je rovnov\u00e1\u017en\u00e1 a dok\u00e1\u017ee registrovat sebemen\u0161\u00ed vibrace vodn\u00edho proudu.\t\u017draloci jsou gonochorist\u00e9 s\u00a0vnit\u0159n\u00edm oplozen\u00edm. Av\u0161ak m\u016f\u017eou b\u00fdt jak \u017eivorod\u00ed, tak vejco\u017eivorod\u00ed \u010di \u017eivorod\u00ed, z\u00e1le\u017e\u00ed na druhu \u017eraloka.\tZaj\u00edmavost\u00ed je, \u017ee \u017eraloci maj\u00ed schopnost katalepsie. Tento stav se projevuje ztuhlost\u00ed sval\u016f a sn\u00ed\u017eenou citlivost\u00ed. \u017dralok se oto\u010d\u00ed b\u0159ichem k\u00a0hladin\u011b a nen\u00ed v\u00a0tomto stavu nebezpe\u010dn\u00fd. P\u0159esto toto plat\u00ed sp\u00ed\u0161e pro men\u0161\u00ed druhy\u00a0\u017eralok\u016f.\t\tDvoucifern\u00e1 \u010d\u00edsla, kter\u00e1 zna\u010d\u00ed smrt zp\u016fsobenou \u017eraloky, maj\u00ed jen t\u0159i druhy, \u017eralok velk\u00fd b\u00edl\u00fd, tyg\u0159\u00ed, a b\u011blav\u00fd.\tDruhy \u017eralok\u016f:\t\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Kladivoun obecn\u00fd\tOb\u00fdv\u00e1 jak tropick\u00e9 vody, tak nav\u0161t\u011bvuje i vody m\u00edrn\u00e9ho p\u00e1su. Jeho d\u00e9lka m\u016f\u017ee \u010dinit a\u017e 6 metr\u016f. Hlava, podle jm\u00e9na, p\u0159ipom\u00edn\u00e1 kladivo a jeho o\u010di jsou um\u00edst\u011bny po stran\u00e1ch a vzd\u00e1leny p\u0159es metr. Jeho potravou jsou hlavn\u011b rejnoci, v\u016f\u010di jejich jedu je imunn\u00ed, m\u016f\u017ee b\u00fdt i nebezpe\u010dn\u00fd pro lidi, proto\u017ee je agresivn\u00ed.\t\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u017dralok velryb\u00ed\tNajdeme ho p\u0159ev\u00e1\u017en\u011b bl\u00edzko hladiny, kde najde svou potravu \u2013 plankton. Plave s\u00a0otev\u0159enou tlamou, do kter\u00e9 by se ve\u0161lo p\u0159ibli\u017en\u011b 5 dosp\u011bl\u00fdch jedinc\u016f. Je to nejv\u011bt\u0161\u00ed \u017eralok, kter\u00fd m\u011b\u0159\u00ed a\u017e 18 metr\u016f.\t\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u017dralok lido\u017erav\u00fd\tNeboli Velk\u00fd b\u00edl\u00fd \u017eralok je zn\u00e1n jako velmi nebezpe\u010dn\u00fd. P\u0159esto je to jen miln\u00e1 domn\u011bnka, proto\u017ee \u00fato\u010d\u00ed jen pokud je v\u00a0nebezpe\u010d\u00ed on \u010di jeho ml\u00e1\u010fata. V\u00fdjimkou m\u016f\u017ee b\u00fdt nevyprovokovan\u00fd \u00fatok, kdy si \u017eralok surfa\u0159e \u010di plavce splete s\u00a0jeho b\u011b\u017enou ko\u0159ist\u00ed.\t\u00a0\tNakonec \u017eraloci pro n\u00e1s nejsou nejnebezpe\u010dn\u011bj\u0161\u00edmi savci na na\u0161\u00ed planet\u011b. M\u011bli bychom tento druh \u017eivo\u010dich\u016f chr\u00e1nit, proto\u017ee jsou loveni p\u0159ev\u00e1\u017en\u011b pro maso, zvl\u00e1\u0161t\u011b pro jejich j\u00e1tra. \u017draloci jsou velmi d\u016fle\u017eit\u00ed pro potravn\u00ed \u0159et\u011bzec, proto pokud se sn\u00ed\u017e\u00ed po\u010det t\u011bchto paryb, \u010d\u00e1st ekosyst\u00e9m\u016f v\u00a0oce\u00e1nech by se mohla zhroutit. V\u00a0t\u00e9to dob\u011b sta\u010d\u00ed probl\u00e9my s\u00a0plasty v\u00a0mo\u0159sk\u00fdch oce\u00e1nech \u010di ropn\u00e9 nehody, dal\u0161\u00ed probl\u00e9my vod\u00e1m u\u017e nem\u016f\u017eeme dopustit.                                                                                                                                                                                                                                                                                                                                                                                        3.8\/5 - (5 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Krvav\u00ed zabij\u00e1ci na \u00fastupu","item":"https:\/\/www.agia.cz\/krvavi-zabijaci-na-ustupu\/#breadcrumbitem"}]}]