{"id":35467,"date":"2024-06-09T10:37:12","date_gmt":"2024-06-09T08:37:12","guid":{"rendered":"https:\/\/www.deepseareporter.com\/?p=35467"},"modified":"2024-06-09T10:37:14","modified_gmt":"2024-06-09T08:37:14","slug":"for-tidigt-fiske-ger-mindre-laxar","status":"publish","type":"post","link":"https:\/\/www.deepseareporter.com\/sv\/for-tidigt-fiske-ger-mindre-laxar\/","title":{"rendered":"F\u00f6r tidigt fiske ger mindre laxar"},"content":{"rendered":"\n

Tidigt fiske av laxar i \u00d6stersj\u00f6n kan ha negativ effekt p\u00e5 tillv\u00e4xten och medf\u00f6ra att fiskarna blir mindre, enligt en ny studie gjord vid Helsingfors universitet.<\/strong><\/p>\n\n\n\n

\"\"
Laxarna riskerar att bli mindre p\u00e5 grund av fiske tidigt p\u00e5 \u00e5ret. Arkivbild Foto: Bj\u00f6rn Larsson Ask\/TT<\/figcaption><\/figure>\n\n\n\n

En kartl\u00e4ggning av \u00d6stersj\u00f6laxens arvsmassa visar att de st\u00f6rre och \u00e4ldre laxarna, varav en del b\u00e4r p\u00e5 det s\u00e5 kallade \u201dstorlax-anlaget\u201d, ofta vandrar redan under sen v\u00e5r och tidigt p\u00e5 sommaren. Det \u00e4r viktigt att just de kraftiga individerna f\u00e5r leva vidare f\u00f6r att fortplanta sig.<\/p>\n\n\n\n

”Ett intensivt laxfiske under f\u00f6rsommaren kan leda till att laxar med anlag att v\u00e4xa sig stora blir mer s\u00e4llsynta och att laxarna som leker blir allt yngre och mindre i storlek”, s\u00e4ger forskaren Antti Miettinen vid Helsingfors universitet i ett pressmeddelande.<\/p>\n\n\n\n

I studien analyserades tusentals vildlaxar som fiskades mellan \u00e5ren 1928 och 2020. Laxar med ”storlax-anlaget” d\u00f6k oftare upp i f\u00e5ngsten under f\u00f6rsommaren \u00e4n senare under fiskes\u00e4songen.<\/p>\n\n\n\n

”Uppt\u00e4ckten tyder p\u00e5 att om fisket koncentreras till en viss tidpunkt, kan det medf\u00f6ra evolution\u00e4ra f\u00f6r\u00e4ndringar i laxens k\u00f6nsmognad och d\u00e4rmed p\u00e5verka storleken p\u00e5 de laxar som vandrar till \u00e4lven och blir tillg\u00e4ngliga f\u00f6r fiske”, f\u00f6rklarar Miettinen.<\/p>\n\n\n\n

Han anser att det \u00e4r viktigt att beakta detta vid regleringen av fisket f\u00f6r att bevara laxbest\u00e5ndens livskraft.<\/p>\n","protected":false},"excerpt":{"rendered":"

Tidigt fiske av laxar i \u00d6stersj\u00f6n kan ha negativ effekt p\u00e5 tillv\u00e4xten och medf\u00f6ra att fiskarna blir mindre, enligt en ny studie gjord vid Helsingfors universitet.<\/p>\n","protected":false},"author":4,"featured_media":35468,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[235],"tags":[2512,1196,2513],"class_list":["post-35467","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fiske","tag-laxfiske","tag-ostersjon-3","tag-vildlax"],"acf":[],"yoast_head":"\nF\u00f6r tidigt fiske ger mindre laxar - Deep Sea Reporter<\/title>\n<meta name=\"description\" content=\"Tidigt fiske av laxar i \u00d6stersj\u00f6n kan ha negativ effekt p\u00e5 tillv\u00e4xten och medf\u00f6ra att fiskarna blir mindre, enligt en ny studie gjord vid Helsingfors universitet.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.deepseareporter.com\/sv\/for-tidigt-fiske-ger-mindre-laxar\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"F\u00f6r tidigt fiske ger mindre laxar - 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