Stella's project is entitled "The effects of cold cathode lights on growth of juvenile Atlantic cod (Gadus morhua L.): use of IGF-I as an indicator of growth".<\/p>\n\n\n\n
The project was part of a larger project, "Development of industrialized cod farming: Growth and puberty management with advanced lighting equipment<\/em>Which was funded by the AVS fund and was a collaborative project of Mat\u00eds ohf., The Marine Research Institute, Hra\u00f0frystih\u00fas Gunnvarar hf., The University of Gothenburg, the University of H\u00f3lar, the University of Akureyri, Mat\u00eds-Prokar\u00eda and the Westfjords Nature Center.<\/p>\n\n\n\n Gu\u00f0bj\u00f6rg Stella's master project was funded by Mat\u00eds ohf., The AVS Fund, Landsbankinn and the Margr\u00e9t Bj\u00f6rg\u00f3lfsd\u00f3ttir Memorial Fund.<\/p>\n\n\n\n Lj\u00f3slota is one of the environmental factors that has the greatest impact on the growth and sexual maturity of cod, as in other fish species. Recent research suggests that the growth rate of cod can be increased by using light control to extend the day over autumn and winter. In this study, cod juveniles were reared in cans using new cold-cathod lights (CCLs) from a weight of about 10 grams. With the lighting, the juveniles were created special environmental conditions very early in the life cycle that can potentially increase sensitivity to certain wavelengths of light when the juveniles are later in the life cycle transferred to light-controlled sea cages. The effect of the light on the growth of the juveniles and the concentration of IGF-I (insulin-like growth factor-I) in the blood were studied.<\/p>\n\n\n\n The main results of the study indicate that treatment with CCL lights does not affect the growth or survival of cod fry in the first year of fire. The results also show that it is possible to measure the level of IGF-I in the blood, but there was no relationship between the growth rate and the concentration of IGF-I in the blood of cod during this developmental stage. The results also indicate that treatment with CCL lights in the early stages of farming has a positive effect with regard to skeletal defects that have been a problem in cod juvenile farming.<\/p>\n\n\n\n Supervisors<\/strong> and the supervisors of the project were Rannveig Bj\u00f6rnsd\u00f3ttir, assistant professor at the University of Akureyri \/ head of department at Mat\u00eds ohf., Dr. \u00deorleifur \u00c1g\u00fastsson project manager Mat\u00eds ohf., Professor Bj\u00f6rn \u00der\u00e1ndur Bj\u00f6rnsson at the Faculty of Fish Physiology at the University of Gothenburg and Dr. Helgi Thorarensen, head of the aquaculture department at H\u00f3lar University.<\/p>\n\n\n\n Opponent<\/strong> is Dr. Logi J\u00f3nsson, Associate Professor at the University of Iceland.<\/p>","protected":false},"excerpt":{"rendered":" \u00deri\u00f0judaginn 16. desember heldur Gu\u00f0bj\u00f6rg Stella \u00c1rnad\u00f3ttir meistarav\u00f6rn s\u00edna \u00e1 au\u00f0lindasvi\u00f0i. V\u00f6rnin fer fram kl. 13:00 og ver\u00f0ur \u00ed stofu […]<\/p>\n","protected":false},"author":1,"featured_media":40343,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"templates\/template-cover.php","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","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":"","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":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1973],"tags":[],"class_list":["post-43271","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-frettir"],"acf":[],"yoast_head":"\n