[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.luckylucky.cz\/neni-placka-jako-placka\/#Article","mainEntityOfPage":"https:\/\/www.luckylucky.cz\/neni-placka-jako-placka\/","headline":"Nen\u00ed placka jako placka","name":"Nen\u00ed placka jako placka","description":"Snad ka\u017ed\u00e9ho p\u0159i slov\u011b placka napadne placka bramborov\u00e1 anebo brambor\u00e1k. Ryb\u00e1\u0159i, kte\u0159\u00ed p\u0159es zimu odkl\u00e1daj\u00ed pruty a sp\u00ed\u0161e listuj\u00ed v\u00a0ryb\u00e1\u0159sk\u00fdch p\u0159\u00edru\u010dk\u00e1ch, si mo\u017en\u00e1 vzpomenou, \u017ee takhle pojmenovali na\u0161i p\u0159edkov\u00e9 sle\u010fovit\u00e9&hellip; <span class=\"read-more-span\"><a href=\"https:\/\/www.luckylucky.cz\/neni-placka-jako-placka\/\" class=\"more-link\">Pokra\u010dovat ve \u010dten\u00ed<span class=\"screen-reader-text\"> \"Nen\u00ed placka jako placka\"<\/span> <span class=\"genericon genericon-next\"><\/span><\/a><\/span>","datePublished":"2025-03-08","dateModified":"2023-04-29","author":{"@type":"Person","@id":"https:\/\/www.luckylucky.cz\/author\/#Person","name":"luckylucky.cz\n","url":"https:\/\/www.luckylucky.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/e32c915fa5b274a4469e3ef5c1f9837e76577a60613858c5c8a74a3de98e33bc?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/e32c915fa5b274a4469e3ef5c1f9837e76577a60613858c5c8a74a3de98e33bc?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"luckylucky.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.luckylucky.cz\/wp-content\/uploads\/img_a301287_w1905_t1511354798.jpg","url":"https:\/\/www.luckylucky.cz\/wp-content\/uploads\/img_a301287_w1905_t1511354798.jpg","height":0,"width":0},"url":"https:\/\/www.luckylucky.cz\/neni-placka-jako-placka\/","about":["Hobby"],"wordCount":443,"articleBody":"Snad ka\u017ed\u00e9ho p\u0159i slov\u011b placka napadne placka bramborov\u00e1 anebo brambor\u00e1k. Ryb\u00e1\u0159i, kte\u0159\u00ed p\u0159es zimu odkl\u00e1daj\u00ed pruty a sp\u00ed\u0161e listuj\u00ed v\u00a0ryb\u00e1\u0159sk\u00fdch p\u0159\u00edru\u010dk\u00e1ch, si mo\u017en\u00e1 vzpomenou, \u017ee takhle pojmenovali na\u0161i p\u0159edkov\u00e9 sle\u010fovit\u00e9 ryby z\u00a0rodu Alosa, kter\u00e9 je\u0161t\u011b koncem 19. stolet\u00ed pronikaly p\u0159i t\u0159ec\u00edch migrac\u00edch z\u00a0mo\u0159e Labem a\u017e do \u010cech a pak n\u011bkdy i proti proudu v\u011bt\u0161\u00edch p\u0159\u00edtok\u016f, t\u0159eba Vltavy. Sv\u011bd\u010d\u00ed o tom i historick\u00e9 z\u00e1znamy, podle nich\u017e byly tyto ryby nab\u00edzeny od dubna do \u010dervence na pra\u017esk\u00fdch tr\u017ei\u0161t\u00edch. Bohu\u017eel, ichtyologov\u00e9 dnes hodnot\u00ed ryby z\u00a0rodu Alosa, u n\u00e1s jako vymizel\u00e9.Placky dostaly sv\u00e9 jm\u00e9no podle prot\u00e1hl\u00e9ho, z\u00a0bok\u016f siln\u011b stla\u010den\u00e9ho t\u011bla. Na boc\u00edch jim chyb\u00ed postrann\u00ed \u010d\u00e1ra. Typick\u00fdm znakem je na b\u0159i\u0161e k\u00fdl ze zvl\u00e1\u0161tn\u00edch k\u0159\u00eddlovit\u00fdch \u0161upin, vytv\u00e1\u0159ej\u00edc\u00edch pilovitou hranu. \u0160upiny maj\u00ed placky st\u0159\u00edb\u0159it\u011b leskl\u00e9, snadno opadav\u00e9. St\u0159edem siln\u011b vykrojen\u00e9 ocasn\u00ed ploutve vyb\u00edhaj\u00ed dv\u011b \u0161upinat\u00e1 pole, t\u00e9m\u011b\u0159 a\u017e ke konci ploutve. P\u0159ed o\u010dima i za nimi se nach\u00e1zej\u00ed z\u00e1hyby s\u00a0tzv. tukov\u00fdmi v\u00ed\u010dky, kter\u00e9 z\u0159ejm\u011b chr\u00e1n\u00ed zrak p\u0159i rychl\u00e9m plav\u00e1n\u00ed p\u0159i tahu proti proudu \u0159ek.Na \u00fazem\u00ed \u010cech byly v\u00a0minulosti p\u0159i reproduk\u010dn\u00edch migrac\u00edch loveny dva druhy t\u011bchto mo\u0159sk\u00fdch ryb. V\u011bt\u0161\u00edm druhem byla placka pomo\u0159ansk\u00e1 (Alosa alosa), p\u0159ezd\u00edvan\u00e1pomo\u0159anka. Dor\u016fstala do d\u00e9lky 60 \u2013 80 cm a hmotnosti 2,7 \u2013 4 kg. Placka skvrnit\u00e1 (Alosa fallax), zn\u00e1m\u00e1 i jako placka finta, byla subtiln\u011bj\u0161\u00ed, m\u00edvala 35 \u2013 50 cm a hmotnost 1,5 kg.Placka pomo\u0159ansk\u00e1 \u017eije i dnes v\u00a0pob\u0159e\u017en\u00edch vod\u00e1ch od severn\u00edho Norska a\u017e ke Kan\u00e1rsk\u00fdm ostrov\u016fm, v\u00a0mal\u00e9 \u010d\u00e1sti Baltsk\u00e9ho mo\u0159e i v\u00a0z\u00e1padn\u00ed \u010d\u00e1sti mo\u0159e St\u0159edozemn\u00edho. Placka skvrnit\u00e1 zasahuje na severu k\u00a0Islandu a ze St\u0159edomo\u0159\u00ed pronikla i do \u010cern\u00e9ho mo\u0159e. Jde o ryby \u017eij\u00edc\u00ed v\u00a0m\u011blk\u00fdch vod\u00e1ch pob\u0159e\u017en\u00edho \u0161elfu, kde se \u017eiv\u00ed planktonem a men\u0161\u00edmi kor\u00fd\u0161i.P\u0159ipluj\u00ed? Po zpr\u016fchodn\u011bn\u00ed p\u0159\u00ed\u010dn\u00fdch staveb na Labi by se mohl p\u0159i migrac\u00edch n\u011bkter\u00fd ze dvou druh\u016f placek \u017eij\u00edc\u00edch v\u00a0Severn\u00edm mo\u0159i probojovat spolu s\u00a0lososy proti proudu a\u017e na na\u0161e \u00fazem\u00ed, co\u017e by zp\u016fsobilo nemalou radost na\u0161im ichtyolog\u016fm.                                                                                                                                                                                                                                                                                                                                                                                        5\/5 - (4 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Nen\u00ed placka jako placka","item":"https:\/\/www.luckylucky.cz\/neni-placka-jako-placka\/#breadcrumbitem"}]}]