{"id":34846,"date":"2024-04-12T11:35:39","date_gmt":"2024-04-12T09:35:39","guid":{"rendered":"https:\/\/www.deepseareporter.com\/?p=34846"},"modified":"2025-02-26T15:08:57","modified_gmt":"2025-02-26T14:08:57","slug":"blackfiskarna-forlorar-syn-nar-havet-blir-varmare","status":"publish","type":"post","link":"https:\/\/www.deepseareporter.com\/sv\/blackfiskarna-forlorar-syn-nar-havet-blir-varmare\/","title":{"rendered":"Bl\u00e4ckfiskarna f\u00f6rlorar syn – n\u00e4r havet blir varmare"},"content":{"rendered":"\n

N\u00e4r vi pratar klimatf\u00f6r\u00e4ndringar, handlar det oftast om uppv\u00e4rmning i atmosf\u00e4ren och \u00e4ndrade v\u00e4dersystem, men haven drabbas ocks\u00e5 och kanske \u00e4n v\u00e4rre.<\/strong><\/p>\n\n\n\n

Redan nu emigrerar m\u00e5nga fiskar och djur till djupare och kallare delar av havet. Men bl\u00e4ckfiskar \u00e4r s\u00e5rbara och utsatta p\u00e5 s\u00e5 m\u00e5nga s\u00e4tt. Om havet forts\u00e4tter att v\u00e4rmas upp, p\u00e5 det s\u00e4tt som forskarna f\u00f6rutsp\u00e5r, kan det bli helt f\u00f6r\u00f6dande f\u00f6r dem. Redan vid n\u00e5gra f\u00e5 grader varmare kan man se att deras storlek, \u00f6verlevnad och fortplantningsf\u00f6rm\u00e5ga f\u00f6rs\u00e4mras. Men det kanske allvarligaste \u00e4r att deras syn drabbas.<\/p>\n\n\n\n

Bl\u00e4ckfiskar \u00e4r ekotermiska varelser, p\u00e5 svenska brukar vi s\u00e4ga \u201dkallblodiga\u201d, det vill s\u00e4ga att de \u00e4r beroende av omgivningens temperatur f\u00f6r att sj\u00e4lva h\u00e5lla v\u00e4rmen. Det g\u00f6r de extra \u00f6mt\u00e5liga i ett hav som blir varmare. Och en ny studie visar att deras syn \u00e4r speciellt k\u00e4nslig f\u00f6r temperaturf\u00f6r\u00e4ndringar<\/a>.\u00a0<\/p>\n\n\n\n

Forskare fr\u00e5n Australien och USA ville se hur bl\u00e4ckfiskens syn drabbas av att havet blir varmare. Bl\u00e4ckfiskar \u00e4r extremt beroende av sin syn, 70% av deras hj\u00e4rna \u00e4r specifikt dedikerad till just synen.<\/p>\n\n\n\n

Och det visade sig att i temperaturer p\u00e5 25\u00b0C bildades betydligt f\u00e4rre \u201dsyn-proteiner\u201d \u00e4n annars vilket p\u00e5verkar synen radikalt.<\/p>\n","protected":false},"excerpt":{"rendered":"

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