{"id":43357,"date":"2026-04-21T14:46:10","date_gmt":"2026-04-21T12:46:10","guid":{"rendered":"https:\/\/www.deepseareporter.com\/?p=43357"},"modified":"2026-04-22T10:30:10","modified_gmt":"2026-04-22T08:30:10","slug":"varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav","status":"publish","type":"post","link":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/","title":{"rendered":"Varmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav"},"content":{"rendered":"\n

Ny forskning visar att de st\u00f6rre varmblodiga fiskarterna som haj och tonfisk, s\u00e5 kallade mesotermer, riskerar att \u00f6verhettas d\u00e5 havstemperaturen stiger. <\/strong><\/p>\n\n\n\n

Text: Marika Griehsel<\/sup><\/p>\n\n\n\n

Mesoterma-arterna som utg\u00f6r knappt 0,1 procent av fiskarna, oms\u00e4tter f\u00f6da snabbt till energi och v\u00e4rme. Det g\u00f6r dem extra r\u00f6rliga och \u00e4r sannolikt orsaken till att de \u00e4r topp-predatorer i havet.<\/p>\n\n\n\n

Men enligt studien medf\u00f6r den h\u00f6gre kroppstemperaturen s\u00e5rbarhet.<\/p>\n\n\n\n

Mesotermer kan beh\u00e5lla metabolisk (egen genererad) v\u00e4rme och h\u00e5lla delar av sin kropp varmare \u00e4n det omgivande vattnet.<\/p>\n\n\n\n

Det inneb\u00e4r att de alstrar v\u00e4rme snabbare \u00e4n de kan avge den och f\u00f6redrar d\u00e4rf\u00f6r att leva i kalla vattenstr\u00e5k och p\u00e5 havsdjupen.<\/p>\n\n\n\n

Men n\u00e4r havsvattnet p\u00e5 grund av klimatf\u00f6r\u00e4ndringar blir varmare blir \u00e4ven dessa fiskar varmare. De tvingas flytta till l\u00e4mpligare livsmilj\u00f6er som polerna, b\u00e5de i jakten p\u00e5 f\u00f6da och f\u00f6r sitt v\u00e4lm\u00e5ende.<\/p>\n\n\n\n

Unders\u00f6kt energifl\u00f6den<\/strong> i detalj<\/h2>\n\n\n\n

I studien har forskare f\u00f6r f\u00f6rsta g\u00e5ngen i detalj, unders\u00f6kt hur de allra minsta varelserna som larver i havet, till de stora fiskarna energifl\u00f6dena fungerar, i snabbt uppv\u00e4rmda havsmilj\u00f6er.<\/p>\n\n\n\n

Resultaten har bland annat publicerats i vetenskapsmagasinet Sciene<\/a>, d\u00e4r den internationella forskargruppen beskriver de sl\u00e5ende resultaten. <\/p>\n\n\n\n

– Till exempel kan en 1 ton tung varmblodig haj ha sv\u00e5rt att uppr\u00e4tth\u00e5lla v\u00e4rmebalansen i vatten \u00f6ver cirka 17 \u00b0C, ber\u00e4ttar Edward Snelling fr\u00e5n University of Pretoria i Sydafrika i artikeln i Science. \u00d6ver s\u00e5dana tr\u00f6skelv\u00e4rden m\u00e5ste fiskar sakta ner, \u00e4ndra blodfl\u00f6det eller dyka till svalare djup f\u00f6r att undvika farlig uppv\u00e4rmning. Men det har ocks\u00e5 ett pris. Det kan till exempel bli sv\u00e5rare att hitta mat eller f\u00e5nga den, s\u00e4rskilt om ditt fr\u00e4msta vapen \u00e4r hastighet och kraft.<\/p>\n\n\n\n

Forskarna utvecklade en metod f\u00f6r att uppskatta den rutinm\u00e4ssiga \u00e4mnesoms\u00e4ttningen hos larver och fiskar genom att analysera v\u00e4rmeutbytet hos m\u00e4rkta individer och kombinera resultaten med publicerade andningsdata f\u00f6r arten.<\/p>\n\n\n\n

Med hj\u00e4lp av detta ramverk utv\u00e4rderade f\u00f6rfattarna sedan hur kroppsstorlek, omgivningstemperatur och v\u00e4rmebevarande fysiologiska anpassningar p\u00e5verkar energibehovet.<\/p>\n\n\n\n

Resultaten visar att mesoterma fiskar kr\u00e4ver n\u00e4stan fyra g\u00e5nger mer energi \u00e4n sina kallblodiga motsvarigheter.<\/p>\n\n\n\n

Dessutom avsl\u00f6jade analysen en skalnings-obalans mellan v\u00e4rmeproduktion och v\u00e4rmef\u00f6rlust, d\u00e4r v\u00e4rmeproduktionshastigheten \u00f6kar snabbare \u00e4n v\u00e4rmef\u00f6rlusten n\u00e4r fiskarterna blir st\u00f6rre, vilket inneb\u00e4r att st\u00f6rre mesoterma fiskar blir alltmer varmblodiga.<\/p>\n\n\n\n

De allra flesta fiskar \u00e4r kallblodiga som inte kan reglera sin egen kroppstemperatur.<\/p>\n\n\n\n

– Efter att ha tagit h\u00e4nsyn till kroppsstorlek och temperatur fann vi att mesoterma fiskar anv\u00e4nder ungef\u00e4r 3,8 g\u00e5nger mer energi \u00e4n kallblodiga fiskar av liknande storlek, f\u00f6rklarar seniorf\u00f6rfattaren Andrew Jackson, fr\u00e5n Trinity College i Irland i artikeln i Science. Baserat p\u00e5 data kunde vi skapa teoretiska \u201dv\u00e4rmebalansgr\u00e4nser\u201d, vilket \u00e4r de vattentemperaturer \u00f6ver vilka stora fiskar inte kan avge v\u00e4rme tillr\u00e4ckligt snabbt f\u00f6r att uppr\u00e4tth\u00e5lla stabila kroppstemperaturer utan att \u00e4ndra sitt beteende eller sin fysiologi\u201d.<\/p>\n\n\n\n

Varmblodiga fiskar<\/strong> utsatta f\u00f6r dubbla faror<\/h2>\n\n\n\n

Jordens hav har absorberat cirka 90 % av den \u00f6verskottsv\u00e4rme som f\u00e5ngats i atmosf\u00e4ren genom \u00f6kade koncentrationer av v\u00e4xthusgaser till f\u00f6ljd av m\u00e4nsklig aktivitet.<\/p>\n\n\n\n

– N\u00e4r haven v\u00e4rms upp pressas dessa varmblodiga arter n\u00e4rmare sina fysiologiska gr\u00e4nser, vilket kan f\u00e5 konsekvenser f\u00f6r var de kan leva och hur de \u00f6verlever\u201d, s\u00e4ger Edward Snelling.<\/p>\n\n\n\n

– Det som \u00e4r s\u00e4rskilt oroande \u00e4r att dessa djur redan lever p\u00e5 en sn\u00e4v energibudget, och klimatf\u00f6r\u00e4ndringarna begr\u00e4nsar deras alternativ \u00e4nnu mer. Att f\u00f6rst\u00e5 dessa begr\u00e4nsningar \u00e4r avg\u00f6rande om vi vill f\u00f6ruts\u00e4ga hur de marina ekosystemen kommer att f\u00f6r\u00e4ndras under de kommande decennierna.<\/p>\n\n\n\n

Konsekvenserna \u00e4r verkligen allvarliga, eftersom denna nya uppt\u00e4ckt i praktiken uts\u00e4tter dessa djur f\u00f6r en \u201ddubbel fara,\u201d enligt forskarteamet.<\/p>\n\n\n\n

– M\u00e5nga mesoterma fiskar p\u00e5verkas redan kraftigt av \u00f6verfiske av b\u00e5de dem sj\u00e4lva och deras bytesdjur, s\u00e5 deras \u00f6kade energibehov g\u00f6r dem s\u00e4rskilt s\u00e5rbara n\u00e4r maten blir knapp, enligt Edward Snelling.<\/p>\n\n\n\n

Fossila fynd tyder p\u00e5 att varmblodiga marina j\u00e4ttar, som den \u00f6k\u00e4nda utd\u00f6da hajen Megalodon<\/em>, drabbades oproportionerligt h\u00e5rt under tidigare klimatf\u00f6r\u00e4ndringar n\u00e4r haven f\u00f6r\u00e4ndrades. Nu f\u00f6r\u00e4ndras dagens hav i en aldrig tidigare sk\u00e5dad takt, s\u00e5 varningsklockorna ringer h\u00f6gt just nu, enligt studien.<\/p>\n\n\n\n


Om Deep Sea Reporter<\/strong>: V\u00e5r ambition \u00e4r att granska och skildra fr\u00e5gor som r\u00f6r havet och det liv som finns under ytan. Vi verkar i allm\u00e4nhetens tj\u00e4nst och drivs sj\u00e4lvst\u00e4ndigt i f\u00f6rh\u00e5llande till politiska, kommersiella och andra intressen i samh\u00e4llet. <\/sup><\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Ny forskning visar att de st\u00f6rre varmblodiga fiskarterna som haj och tonfisk, s\u00e5 kallade mesotermer, riskerar att \u00f6verhettas d\u00e5 havstemperaturen stiger.\u00a0<\/p>\n","protected":false},"author":4,"featured_media":43362,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[252,580,244],"tags":[306,4552,976,1394,4551,1985],"class_list":["post-43357","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-forskning","category-internationellt","category-klimat-och-miljo","tag-forskning","tag-mesoterma-arter","tag-tonfisk","tag-varmare-hav","tag-varmblodiga-fiskar","tag-vithajar"],"acf":[],"yoast_head":"\nVarmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav - Deep Sea Reporter<\/title>\n<meta name=\"description\" content=\"Ny forskning visar att de st\u00f6rre varmblodiga fiskarterna som haj och tonfisk, s\u00e5 kallade mesotermer, riskerar att \u00f6verhettas d\u00e5 havstemperaturen stiger.\u00a0\" \/>\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\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Varmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav - Deep Sea Reporter\" \/>\n<meta property=\"og:description\" content=\"Ny forskning visar att de st\u00f6rre varmblodiga fiskarterna som haj och tonfisk, s\u00e5 kallade mesotermer, riskerar att \u00f6verhettas d\u00e5 havstemperaturen stiger.\u00a0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/\" \/>\n<meta property=\"og:site_name\" content=\"Deep Sea Reporter\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-21T12:46:10+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-22T08:30:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/04\/great-white-shark-2026-03-09-22-09-25-utc.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1333\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Lena Scherman\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Skriven av\" \/>\n\t<meta name=\"twitter:data1\" content=\"Lena Scherman\" \/>\n\t<meta name=\"twitter:label2\" content=\"Ber\u00e4knad l\u00e4stid\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minuter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/\"},\"author\":{\"name\":\"Lena Scherman\",\"@id\":\"https:\/\/www.deepseareporter.com\/#\/schema\/person\/8440c67b5dda5c5ae6c70162fedbd434\"},\"headline\":\"Varmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav\",\"datePublished\":\"2026-04-21T12:46:10+00:00\",\"dateModified\":\"2026-04-22T08:30:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/\"},\"wordCount\":835,\"publisher\":{\"@id\":\"https:\/\/www.deepseareporter.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/04\/great-white-shark-2026-03-09-22-09-25-utc.jpeg\",\"keywords\":[\"Forskning\",\"mesoterma arter\",\"Tonfisk\",\"varmare hav\",\"varmblodiga fiskar\",\"vithajar\"],\"articleSection\":[\"Forskning\",\"Internationellt\",\"Klimat och Milj\u00f6\"],\"inLanguage\":\"sv-SE\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/\",\"url\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/\",\"name\":\"Varmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav - Deep Sea Reporter\",\"isPartOf\":{\"@id\":\"https:\/\/www.deepseareporter.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/04\/great-white-shark-2026-03-09-22-09-25-utc.jpeg\",\"datePublished\":\"2026-04-21T12:46:10+00:00\",\"dateModified\":\"2026-04-22T08:30:10+00:00\",\"description\":\"Ny forskning visar att de st\u00f6rre varmblodiga fiskarterna som haj och tonfisk, s\u00e5 kallade mesotermer, riskerar att \u00f6verhettas d\u00e5 havstemperaturen stiger.\u00a0\",\"breadcrumb\":{\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#breadcrumb\"},\"inLanguage\":\"sv-SE\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"sv-SE\",\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#primaryimage\",\"url\":\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/04\/great-white-shark-2026-03-09-22-09-25-utc.jpeg\",\"contentUrl\":\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/04\/great-white-shark-2026-03-09-22-09-25-utc.jpeg\",\"width\":2000,\"height\":1333,\"caption\":\"A great white shark swimming at Guadalupe Island looking for food.\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Hem\",\"item\":\"https:\/\/www.deepseareporter.com\/sv\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Varmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.deepseareporter.com\/#website\",\"url\":\"https:\/\/www.deepseareporter.com\/\",\"name\":\"Deep Sea Reporter\",\"description\":\"Ett digitalt magasin om havet\",\"publisher\":{\"@id\":\"https:\/\/www.deepseareporter.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.deepseareporter.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"sv-SE\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.deepseareporter.com\/#organization\",\"name\":\"Deep Sea Reporter\",\"url\":\"https:\/\/www.deepseareporter.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"sv-SE\",\"@id\":\"https:\/\/www.deepseareporter.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2024\/10\/dsr-bla-ny-logga.svg\",\"contentUrl\":\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2024\/10\/dsr-bla-ny-logga.svg\",\"width\":834,\"height\":504,\"caption\":\"Deep Sea Reporter\"},\"image\":{\"@id\":\"https:\/\/www.deepseareporter.com\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.deepseareporter.com\/#\/schema\/person\/8440c67b5dda5c5ae6c70162fedbd434\",\"name\":\"Lena Scherman\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Varmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav - Deep Sea Reporter","description":"Ny forskning visar att de st\u00f6rre varmblodiga fiskarterna som haj och tonfisk, s\u00e5 kallade mesotermer, riskerar att \u00f6verhettas d\u00e5 havstemperaturen stiger.\u00a0","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/","og_locale":"sv_SE","og_type":"article","og_title":"Varmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav - Deep Sea Reporter","og_description":"Ny forskning visar att de st\u00f6rre varmblodiga fiskarterna som haj och tonfisk, s\u00e5 kallade mesotermer, riskerar att \u00f6verhettas d\u00e5 havstemperaturen stiger.\u00a0","og_url":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/","og_site_name":"Deep Sea Reporter","article_published_time":"2026-04-21T12:46:10+00:00","article_modified_time":"2026-04-22T08:30:10+00:00","og_image":[{"width":2000,"height":1333,"url":"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/04\/great-white-shark-2026-03-09-22-09-25-utc.jpeg","type":"image\/jpeg"}],"author":"Lena Scherman","twitter_card":"summary_large_image","twitter_misc":{"Skriven av":"Lena Scherman","Ber\u00e4knad l\u00e4stid":"4 minuter"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#article","isPartOf":{"@id":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/"},"author":{"name":"Lena Scherman","@id":"https:\/\/www.deepseareporter.com\/#\/schema\/person\/8440c67b5dda5c5ae6c70162fedbd434"},"headline":"Varmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav","datePublished":"2026-04-21T12:46:10+00:00","dateModified":"2026-04-22T08:30:10+00:00","mainEntityOfPage":{"@id":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/"},"wordCount":835,"publisher":{"@id":"https:\/\/www.deepseareporter.com\/#organization"},"image":{"@id":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#primaryimage"},"thumbnailUrl":"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/04\/great-white-shark-2026-03-09-22-09-25-utc.jpeg","keywords":["Forskning","mesoterma arter","Tonfisk","varmare hav","varmblodiga fiskar","vithajar"],"articleSection":["Forskning","Internationellt","Klimat och Milj\u00f6"],"inLanguage":"sv-SE"},{"@type":"WebPage","@id":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/","url":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/","name":"Varmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav - Deep Sea Reporter","isPartOf":{"@id":"https:\/\/www.deepseareporter.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#primaryimage"},"image":{"@id":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#primaryimage"},"thumbnailUrl":"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/04\/great-white-shark-2026-03-09-22-09-25-utc.jpeg","datePublished":"2026-04-21T12:46:10+00:00","dateModified":"2026-04-22T08:30:10+00:00","description":"Ny forskning visar att de st\u00f6rre varmblodiga fiskarterna som haj och tonfisk, s\u00e5 kallade mesotermer, riskerar att \u00f6verhettas d\u00e5 havstemperaturen stiger.\u00a0","breadcrumb":{"@id":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#breadcrumb"},"inLanguage":"sv-SE","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/"]}]},{"@type":"ImageObject","inLanguage":"sv-SE","@id":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#primaryimage","url":"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/04\/great-white-shark-2026-03-09-22-09-25-utc.jpeg","contentUrl":"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/04\/great-white-shark-2026-03-09-22-09-25-utc.jpeg","width":2000,"height":1333,"caption":"A great white shark swimming at Guadalupe Island looking for food."},{"@type":"BreadcrumbList","@id":"https:\/\/www.deepseareporter.com\/sv\/varmblodiga-fiskar-drabbas-dubbelt-av-uppvarmda-hav\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Hem","item":"https:\/\/www.deepseareporter.com\/sv\/"},{"@type":"ListItem","position":2,"name":"Varmblodiga fiskar drabbas dubbelt av uppv\u00e4rmda hav"}]},{"@type":"WebSite","@id":"https:\/\/www.deepseareporter.com\/#website","url":"https:\/\/www.deepseareporter.com\/","name":"Deep Sea Reporter","description":"Ett digitalt magasin om havet","publisher":{"@id":"https:\/\/www.deepseareporter.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.deepseareporter.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"sv-SE"},{"@type":"Organization","@id":"https:\/\/www.deepseareporter.com\/#organization","name":"Deep Sea Reporter","url":"https:\/\/www.deepseareporter.com\/","logo":{"@type":"ImageObject","inLanguage":"sv-SE","@id":"https:\/\/www.deepseareporter.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2024\/10\/dsr-bla-ny-logga.svg","contentUrl":"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2024\/10\/dsr-bla-ny-logga.svg","width":834,"height":504,"caption":"Deep Sea Reporter"},"image":{"@id":"https:\/\/www.deepseareporter.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.deepseareporter.com\/#\/schema\/person\/8440c67b5dda5c5ae6c70162fedbd434","name":"Lena Scherman"}]}},"_links":{"self":[{"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/posts\/43357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/comments?post=43357"}],"version-history":[{"count":3,"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/posts\/43357\/revisions"}],"predecessor-version":[{"id":43374,"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/posts\/43357\/revisions\/43374"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/media\/43362"}],"wp:attachment":[{"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/media?parent=43357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/categories?post=43357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deepseareporter.com\/sv\/wp-json\/wp\/v2\/tags?post=43357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}