M\u011bs\u00edc m\u00e1 jemn\u00fd, ale p\u0159esto hlubok\u00fd vliv na chov\u00e1n\u00ed mnoha mo\u0159sk\u00fdch \u017eivo\u010dich\u016f, v\u010detn\u011b \u00fast\u0159ic. Ned\u00e1vn\u00e1 studie publikovan\u00e1 v \u010dasopise Biology Letters odhaluje, \u017ee tichomo\u0159sk\u00e9 \u00fast\u0159ice (Crassostrea gigas) otev\u00edraj\u00ed a zav\u00edraj\u00ed sv\u00e9 schr\u00e1nky v souladu s m\u011bs\u00ed\u010dn\u00edm cyklem.<\/p>\n\n
V\u00fdzkumn\u00edci pono\u0159ili 12 tichomo\u0159sk\u00fdch \u00fast\u0159ic pod\u00e9l francouzsk\u00e9ho pob\u0159e\u017e\u00ed a sledovali pohyby jejich schr\u00e1nek b\u011bhem t\u0159\u00ed m\u011bs\u00ed\u010dn\u00edch cykl\u016f. Pomoc\u00ed elektrod m\u011b\u0159ili \u0161\u00ed\u0159ku otvor\u016f schr\u00e1nek \u00fast\u0159ic ka\u017ed\u00fdch 1,6 sekundy a porovn\u00e1vali data s m\u011bs\u00ed\u010dn\u00edm cyklem.<\/p>\n\n
V\u00fdsledky uk\u00e1zaly jasn\u00fd vzorec. Jak m\u011bs\u00edc rostl nebo se stal pln\u011bj\u0161\u00edm, \u00fast\u0159ice zu\u017eovaly sv\u00e9 schr\u00e1nky, ani\u017e by je kdy zcela zav\u0159ely. Naopak, kdy\u017e m\u011bs\u00edc za\u010dal ub\u00fdvat nebo se st\u00e1hl do f\u00e1ze novolun\u00ed, op\u011bt otev\u0159ely sv\u00e9 schr\u00e1nky.<\/p>\n\n
To nazna\u010duje, \u017ee \u00fast\u0159ice se mohou spol\u00e9hat na vnit\u0159n\u00ed m\u011bs\u00ed\u010dn\u00ed hodiny sp\u00ed\u0161e ne\u017e na p\u0159\u00edm\u00e9 podn\u011bty, jako je intenzita m\u011bs\u00ed\u010dn\u00edho sv\u011btla. Pokud by na m\u011bs\u00ed\u010dn\u00ed sv\u011btlo reagovaly p\u0159\u00edmo, otev\u00edraly by sv\u00e9 schr\u00e1nky stejn\u011b b\u011bhem prvn\u00ed a posledn\u00ed \u010dtvrti, proto\u017ee intenzita sv\u011btla je podobn\u00e1. \u00dast\u0159ice v\u0161ak na tyto f\u00e1ze reagovaly odli\u0161n\u011b, co\u017e nazna\u010duje vnit\u0159n\u00ed kalend\u00e1\u0159.<\/p>\n\n
Pro\u010d se \u00fast\u0159ice zaj\u00edmaj\u00ed o f\u00e1ze m\u011bs\u00edce? Spoluautorka studie Laura Paytonov\u00e1 z University of Bordeaux spekuluje, \u017ee to m\u016f\u017ee souviset s pohybem planktonu. \u00dast\u0159ice filtruj\u00ed plankton z mo\u0159sk\u00e9 vody a konzumuj\u00ed ho, a p\u0159edchoz\u00ed v\u00fdzkumy uk\u00e1zaly, \u017ee pohyb planktonu je ovlivn\u011bn m\u011bs\u00ed\u010dn\u00edm sv\u011btlem.<\/p>\n\n
M\u011bs\u00ed\u010dn\u00ed cyklus nen\u00ed jedin\u00fd, kter\u00fd ovliv\u0148uje \u00fast\u0159ice. \u0158\u00edd\u00ed se tak\u00e9 p\u0159\u00edlivov\u00fdmi a cirkadi\u00e1nn\u00edmi hodinami. Vodn\u00ed biolog David Wilcockson z Aberystwyth University zd\u016fraz\u0148uje slo\u017eitost t\u011bchto interakc\u00ed: “V\u00edme, \u017ee p\u0159\u00edlivov\u00e9, m\u011bs\u00ed\u010dn\u00ed a cirkadi\u00e1nn\u00ed hodiny maj\u00ed z\u0159ejm\u011b samostatn\u00e9 mechanismy, ale do jist\u00e9 m\u00edry jsou propojen\u00e9 \u2013 a nev\u00edme p\u0159esn\u011b jak a na jak\u00e9 \u00farovni.”<\/p>\n\n
\u00dast\u0159ice nejsou jedin\u00fdmi mo\u0159sk\u00fdmi \u017eivo\u010dichy, kter\u00e9 reaguj\u00ed na m\u011bs\u00edc. Des\u00edtky druh\u016f kor\u00e1l\u016f uvol\u0148uj\u00ed sv\u00e1 vaj\u00ed\u010dka a spermie hromadn\u011b za m\u011bs\u00ed\u010dn\u00edho svitu. N\u011bkte\u0159\u00ed krabi pou\u017e\u00edvaj\u00ed intenzitu m\u011bs\u00ed\u010dn\u00edho sv\u011btla k signalizaci zah\u00e1jen\u00ed sv\u00fdch p\u00e1\u0159\u00edc\u00edch migrac\u00ed. Lososi, s\u00e9pie a plankton tak\u00e9 synchronizuj\u00ed sv\u00e9 \u017eivotn\u00ed cykly s m\u011bs\u00edcem.<\/p>\n\n
Pochopen\u00ed m\u011bs\u00ed\u010dn\u00edho vlivu na \u00fast\u0159ice m\u00e1 d\u016fsledky pro akvakulturu. Manipulac\u00ed se sv\u011bteln\u00fdmi podm\u00ednkami v \u00fast\u0159icov\u00fdch farm\u00e1ch m\u016f\u017ee b\u00fdt mo\u017en\u00e9 optimalizovat r\u016fst a rozmno\u017eov\u00e1n\u00ed \u00fast\u0159ic. K prozkoum\u00e1n\u00ed t\u011bchto mo\u017enost\u00ed je pot\u0159eba dal\u0161\u00edho v\u00fdzkumu.<\/p>\n\n
M\u011bs\u00ed\u010dn\u00ed gravitace a jej\u00ed odraz na zemsk\u00fdch oce\u00e1nech vytv\u00e1\u0159\u00ed symfonii rytmick\u00e9ho chov\u00e1n\u00ed v mo\u0159sk\u00e9m \u017eivot\u011b. \u00dast\u0159ice se sv\u00fdmi vnit\u0159n\u00edmi m\u011bs\u00ed\u010dn\u00edmi hodinami jsou jen jedn\u00edm p\u0159\u00edkladem slo\u017eit\u00fdch vazeb mezi nebesk\u00fdmi cykly a p\u0159\u00edrodn\u00edm sv\u011btem.<\/p>","protected":false},"excerpt":{"rendered":"
\u00dast\u0159ice: M\u011bs\u00ed\u010dn\u00ed rytmus reguluje otev\u00edr\u00e1n\u00ed schr\u00e1nek M\u011bs\u00ed\u010dn\u00ed spojen\u00ed M\u011bs\u00edc m\u00e1 jemn\u00fd, ale p\u0159esto hlubok\u00fd vliv na chov\u00e1n\u00ed mnoha mo\u0159sk\u00fdch \u017eivo\u010dich\u016f, v\u010detn\u011b \u00fast\u0159ic. Ned\u00e1vn\u00e1 studie publikovan\u00e1 v \u010dasopise Biology Letters odhaluje,…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1300],"tags":[17208,17206,361,17207,16888],"class_list":["post-12736","post","type-post","status-publish","format-standard","hentry","category-marine-science","tag-aquaculture","tag-lunar-rhythm","tag-marine-biology","tag-celestial-influence","tag-oysters"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/12736","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=12736"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/12736\/revisions"}],"predecessor-version":[{"id":12737,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/12736\/revisions\/12737"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=12736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=12736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=12736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}