{"id":1635,"date":"2014-09-01T14:39:01","date_gmt":"1970-01-01T00:00:00","guid":{"rendered":"https:\/\/nis.gl\/?post_type=projekt&p=1635"},"modified":"2021-03-23T15:12:51","modified_gmt":"2021-03-23T18:12:51","slug":"dykkerespons-hos-havpattedyr","status":"publish","type":"projekt","link":"https:\/\/nis.gl\/da\/projekt\/dykkerespons-hos-havpattedyr\/","title":{"rendered":"Dykkerespons hos havpattedyr"},"content":{"rendered":"

Projektleder:
\n<\/strong>Mads Peter Heide-J\u00f8rgensen<\/p>\n

Fakultet \/ Forskningsinstitution:
\n<\/strong>Naturvidenskab \/ Gr\u00f8nlands Naturinstitut<\/p>\n

Titel:
\n<\/strong>Dykkerespons hos havpattedyr<\/p>\n

Beskrivelse:
\n<\/strong>Det har l\u00e6nge v\u00e6ret et paradox at havpattedyr under dykningen s\u00e6nker deres hjerteryme til en femtedel eller mindre af deres hjerterytme i overfladen. Den v\u00e6sentligste del af havpattedyrenes fysiske aktivitet foreg\u00e5r under dykningen n\u00e5r de sv\u00f8mmer eller glider ned i dybet, skal fange bytte eller m\u00e5 sv\u00f8mme tilbage til overfladen. Det er modsat alle landlevende dyr som \u00f8ger antallet af hjerteslag og udvider blodkarrene under fysisk aktivitet p\u00e5 land. Havpattedyrenes fald i hjerteslagsrytmen under dyk fungerer som en \u2018k\u00e6mpe kontakt\u2019 der forhindrer blodtilf\u00f8rsel til de fleste organer og stopper al un\u00f8dvendigt iltforbrug. Unders\u00f8gelser af hjerteslagsrytmen har dog v\u00e6ret begr\u00e6nset til s\u00e6ler eller til hvaler som i fangenskab er dykket til relativt lave dybder. I Gr\u00f8nland har vi imidlertid mulighed for at lave unders\u00f8gelser p\u00e5 fritlevende hvaler som dykker til store dybder.
\nN\u00e6rv\u00e6rende projekt vil udstyre udvalgte havpattedyr med mikrosensorer der m\u00e5ler
\ndyrenes EKG samtidig med at deres muskel aktvititet registreres (dvs. slag med halen).
\nprojektet skal de n\u00f8dvendige instrumenter indk\u00f8bes, men projektet baserer sig i\u00f8vrigt p\u00e5 feltarbejde som er financieret fra anden side.<\/p>\n","protected":false},"excerpt":{"rendered":"

Projektleder: Mads Peter Heide-J\u00f8rgensen Fakultet \/ Forskningsinstitution: Naturvidenskab \/ Gr\u00f8nlands Naturinstitut Titel: Dykkerespons hos havpattedyr Beskrivelse: Det har l\u00e6nge v\u00e6ret et paradox at havpattedyr under dykningen s\u00e6nker deres hjerteryme til en femtedel eller mindre af deres hjerterytme i overfladen. Den v\u00e6sentligste del af havpattedyrenes fysiske aktivitet foreg\u00e5r under dykningen n\u00e5r de sv\u00f8mmer eller glider ned […]<\/p>\n","protected":false},"parent":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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