V\u00fdzkum prob\u00edhal v okol\u00ed ostrova Eleuthera, asi 80 kilometr\u016f od Nassau. V\u011bdci analyzovali krev 85 \u017eralok\u016f n\u011bkolika druh\u016f a v\u00fdsledky je p\u0159ekvapily: celkem 28 jedinc\u016f m\u011blo v t\u011ble n\u011bkterou z testovan\u00fdch l\u00e1tek. Nej\u010dast\u011bji \u0161lo o kofein, m\u00e9n\u011b \u010dasto o analgetika a ve dvou p\u0159\u00edpadech o kokain.<\/p>\n
Podle v\u011bdc\u016f to jde vysv\u011btlit pom\u011brn\u011b jednodu\u0161e. \u201e\u017draloci jsou velmi zv\u011bdav\u00ed. Kou\u0161ou do nezn\u00e1m\u00fdch p\u0159edm\u011bt\u016f, aby je prozkoumali, a t\u00edm se necht\u011bn\u011b vystavuj\u00ed nebezpe\u010dn\u00fdm l\u00e1tk\u00e1m,\u201c vysv\u011btluje hlavn\u00ed autorka studie<\/a> Natascha Wosnickov\u00e1. Jin\u00fdmi slovy: pokud \u017eralok naraz\u00ed na podez\u0159el\u00fd bal\u00ed\u010dek ve vod\u011b, prost\u011b ho otestuje zuby. A pr\u00e1v\u011b takov\u00e9 bal\u00ed\u010dky mohou b\u00fdt kl\u00ed\u010dem k cel\u00e9 z\u00e1had\u011b. V Karibiku se toti\u017e dlouhodob\u011b objevuj\u00ed z\u00e1silky drog, kter\u00e9 skon\u010d\u00ed v mo\u0159i – a\u0165 u\u017e kv\u016fli pa\u0161ov\u00e1n\u00ed, nebo nehod\u00e1m. Pro zv\u011bdav\u00e9ho pred\u00e1tora jde jen o dal\u0161\u00ed nezn\u00e1m\u00fd objekt k prozkoum\u00e1n\u00ed.<\/p>\n Kofein a l\u00e9ky – tich\u00e1 hrozba<\/p>\n Kokain je ale jen \u0161pi\u010dka ledovce. Mnohem \u010dast\u011bji se v t\u011blech \u017eralok\u016f objevoval kofein a l\u00e9ky proti bolesti, jako je diclofenac \u010di paracetamol. Pr\u00e1v\u011b tyto \u201eleg\u00e1ln\u00ed\u201c l\u00e1tky vyvol\u00e1vaj\u00ed u v\u011bdc\u016f mo\u017en\u00e1 je\u0161t\u011b v\u011bt\u0161\u00ed obavy.<\/p>\n \u201eZat\u00edmco n\u00e1lezy kokainu p\u0159itahuj\u00ed medi\u00e1ln\u00ed pozornost, v\u0161udyp\u0159\u00edtomn\u00fd kofein a farmaceutika jsou stejn\u011b znepokojiv\u00e9,\u201c upozor\u0148uje Wosnickov\u00e1. \u201eJsou to b\u011b\u017en\u011b u\u017e\u00edvan\u00e9 l\u00e1tky, kter\u00e9 \u010dasto p\u0159ehl\u00ed\u017e\u00edme, ale jejich ekologick\u00e1 stopa je zjevn\u00e1.\u201c<\/p>\n V\u00fdzkumn\u00edci zd\u016fraz\u0148uj\u00ed, \u017ee farmaceutika a neleg\u00e1ln\u00ed drogy se v mo\u0159sk\u00e9m prost\u0159ed\u00ed st\u00e1le \u010dast\u011bji pova\u017euj\u00ed za nov\u011b se objevuj\u00edc\u00ed kontaminanty, zejm\u00e9na v oblastech s rychlou urbanizac\u00ed a turistick\u00fdm rozvojem.<\/p>\n Uklid\u0148uj\u00edc\u00ed je, \u017ee v\u011bdci nezaznamenali \u017e\u00e1dn\u00e9 zn\u00e1mky toho, \u017ee by \u201ekontaminovan\u00ed\u201c \u017eraloci byli pro lidi nebezpe\u010dn\u011bj\u0161\u00ed. \u201eNa\u0161\u00ed hlavn\u00ed obavou nen\u00ed zv\u00fd\u0161en\u00e1 agresivita v\u016f\u010di lidem,\u201c zd\u016fraz\u0148uje Wosnick, \u201eale sp\u00ed\u0161e dopady na zdrav\u00ed samotn\u00fdch \u017eralok\u016f.\u201c<\/p>\n Skryt\u00e9 dopady na zdrav\u00ed \u017eralok\u016f<\/p>\n Jedn\u00edm z mo\u017en\u00fdch zdroj\u016f kontaminace je turismus. Oblasti s nejvy\u0161\u0161\u00ed koncentrac\u00ed l\u00e1tek v krvi \u017eralok\u016f se shoduj\u00ed s m\u00edsty obl\u00edben\u00fdmi mezi n\u00e1v\u0161t\u011bvn\u00edky. V\u00edce lod\u00ed znamen\u00e1 v\u00edce odpadn\u00edch vod – a tak\u00e9 v\u00edce chemick\u00fdch stop, kter\u00e9 pronikaj\u00ed do mo\u0159sk\u00e9ho prost\u0159ed\u00ed. N\u00e1lezy kokainu v\u00fdzkumn\u00edci zaznamenali i u \u017eralok\u016f u pob\u0159e\u017e\u00ed Braz\u00edlie, kde hladiny l\u00e1tek byly dokonce vy\u0161\u0161\u00ed. Tamn\u00ed v\u00fdzkumn\u00edci kontaminaci spojuj\u00ed s vypou\u0161t\u011bn\u00edm odpadn\u00edch vod i \u010dinnost\u00ed neleg\u00e1ln\u00edch laborato\u0159\u00ed.<\/p>\n Zat\u00edm se p\u0159esn\u011b nev\u00ed, jak tyto l\u00e1tky ovliv\u0148uj\u00ed chov\u00e1n\u00ed \u017eralok\u016f. V\u011bdci v\u0161ak zaznamenali zm\u011bny v jejich metabolismu – zejm\u00e9na u jedinc\u016f s \u201ekontaminovanou\u201c krv\u00ed. Podle oce\u00e1nografky Tracy Fanarov\u00e9 to nazna\u010duje, \u017ee vystaven\u00ed chemick\u00fdm l\u00e1tk\u00e1m m\u016f\u017ee u zv\u00ed\u0159at vyvol\u00e1vat stres a nutit je vyd\u00e1vat v\u00edce energie na jejich odbour\u00e1v\u00e1n\u00ed.<\/p>\n Zaj\u00edmavou paralelu nab\u00edz\u00ed v\u00fdzkum u zlat\u00fdch rybek<\/a>, kde se uk\u00e1zalo, \u017ee kofein zvy\u0161uje energii a soust\u0159ed\u011bn\u00ed podobn\u011b jako u lid\u00ed. Jak by ale podobn\u00e9 l\u00e1tky p\u016fsobily na \u017eraloky ve voln\u00e9 p\u0159\u00edrod\u011b, z\u016fst\u00e1v\u00e1 nejasn\u00e9.<\/p>\n Video: \u201eBylo to jako v \u010celistech, jeden ze \u017eralok\u016f dokonce narazil do m\u00e9 lodi,\u201c \u0159ekl ryb\u00e1\u0159<\/p>\n Zdroje: Science Direct<\/a>, Science News<\/a>, New York Post<\/a>, CBS News<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"V\u00fdzkum prob\u00edhal v okol\u00ed ostrova Eleuthera, asi 80 kilometr\u016f od Nassau. V\u011bdci analyzovali krev 85 \u017eralok\u016f n\u011bkolika druh\u016f…\n","protected":false},"author":2,"featured_media":38987,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[5199,6146,54,53,52,15748],"class_list":{"0":"post-38986","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-svet","8":"tag-karibik","9":"tag-more","10":"tag-svet","11":"tag-world","12":"tag-world-news","13":"tag-zraloci"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/116311735984058645","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/38986","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/comments?post=38986"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/38986\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/38987"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=38986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=38986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=38986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}