{"id":5452,"date":"2022-07-28T15:40:50","date_gmt":"2022-07-28T13:40:50","guid":{"rendered":"https:\/\/www.deepseareporter.com\/?p=5452"},"modified":"2025-03-03T15:19:41","modified_gmt":"2025-03-03T14:19:41","slug":"nu-bevisat-rockor-och-hajar-later","status":"publish","type":"post","link":"https:\/\/www.deepseareporter.com\/sv\/nu-bevisat-rockor-och-hajar-later\/","title":{"rendered":"Nu bevisat \u2013 \u00a0rockor och hajar l\u00e5ter"},"content":{"rendered":"\n

Hajar och rockor har l\u00e4nge ansetts som ”tysta” fiskar \u2013 allts\u00e5 utan f\u00f6rm\u00e5ga att framst\u00e4lla ljud. Nu har forskare fr\u00e5n Sverige och Australien visat att det \u00e4r en missuppfattning, skriver SLU (Sveriges lantbruksuniversitet) i ett\u00a0pressmeddelande<\/a>.<\/p>\n\n\n\n

Enligt studien kan minst tv\u00e5 arter av stingrockor avsiktligt producera ljud, troligen som ett f\u00f6rsvars- eller varningsbeteende.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Rockorna framkallade ett klickljud n\u00e4r dykaren var n\u00e4ra. Foto: Brian Bransch Price\/AP\/TT<\/em><\/p>\n\n\n\n

F\u00f6rfattarna presenterar flera inspelningar d\u00e4r vilda fiskar av tv\u00e5 arter av stingrocka avsiktligt producerar ljud. L\u00e4tena k\u00e4nnetecknas av en serie mycket korta och kraftiga klickljud, troligen i varnings- eller f\u00f6rsvars\u00e4ndam\u00e5l. I alla inspelningar b\u00f6rjade rockan att producera ljud n\u00e4r filmaren kom riktigt n\u00e4ra, och upph\u00f6rde n\u00e4r avst\u00e5ndet \u00f6kade.<\/p>\n\n\n\n

”Att vi f\u00f6rst nu ins\u00e5g att dessa vanligt f\u00f6rekommande stingrockor producerar ljud, visar \u00e5terigen hur mycket vi fortfarande har att l\u00e4ra oss om haven”, s\u00e4ger Lachlan Fetterplace, huvudf\u00f6rfattare och forskare vid SLU.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Resultaten publicerades nyligen i den vetenskapliga tidskriften Ecology.<\/p>\n","protected":false},"excerpt":{"rendered":"

Hajar och rockor har l\u00e4nge ansetts som ”tysta” fiskar \u2013 allts\u00e5 utan f\u00f6rm\u00e5ga att framst\u00e4lla ljud. Nu har forskare fr\u00e5n Sverige och Australien visat att det \u00e4r en missuppfattning, skriver SLU (Sveriges lantbruksuniversitet) i ett pressmeddelande<\/p>\n","protected":false},"author":3,"featured_media":33910,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[580],"tags":[324,634,694,695],"class_list":["post-5452","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-internationellt","tag-australien","tag-hajar","tag-ljud","tag-rockor"],"acf":[],"yoast_head":"\nNu bevisat \u2013 \u00a0rockor och hajar l\u00e5ter - Deep Sea Reporter<\/title>\n<meta name=\"description\" content=\"Hajar och rockor har l\u00e4nge ansetts som "tysta" fiskar \u2013 allts\u00e5 utan f\u00f6rm\u00e5ga att framst\u00e4lla ljud. 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