Blar i Faculty of Mathematics and Natural Sciences på emneord "Atlantic cod"
Viser treff 1-12 av 12
-
A deeper look; Does Heincke´s law apply to Atlantic cod (Gadus morhua) in the Barents Sea and what is the effect of eye size on prey encounter rate?
(Master thesis, 2019-05-28)The Atlantic cod (Gadus morhua) is arguably one of the most valuable fish we have, and the Barents Sea stock, Northeast Arctic cod (NEAC), is the largest stock in the world. Despite the long history of fishing and the ... -
Antibiotic uptake by cultured Atlantic cod leucocytes and effect on intracellular Francisella noatunensis subsp. noatunensis replication
(Peer reviewed; Journal article, 2014-02-04)The granuloma disease caused by Francisella noatunensis subsp. noatunensis in farmed Atlantic cod has not been successfully treated by use of antibacterials, even when antibacterial resistance testing indicates a sufficient ... -
Catastrophic dynamics limit Atlantic cod recovery
(Peer reviewed; Journal article, 2019-03-13)Collapses and regime changes are pervasive in complex systems (such as marine ecosystems) governed by multiple stressors. The demise of Atlantic cod (Gadus morhua) stocks constitutes a text book example of the consequences ... -
Copepods enhance nutritional status, growth and development in Atlantic cod (Gadus morhua L.) larvae – can we identify the underlying factors?
(Peer reviewed; Journal article, 2015-05-19)The current commercial production protocols for Atlantic cod depend on enriched rotifers and Artemia during first-feeding, but development and growth remain inferior to fish fed natural zooplankton. Two experiments were ... -
Effects of habitat enrichment and food availability on the foraging behaviour of juvenile Atlantic Cod (Gadus morhua L)
(Peer reviewed; Journal article, 2011-04-13)The environment can play an important role in shaping how an animal behaves, and how well the animal performs in a particular environment can be influenced by early experiences. The tradition of releasing captive-reared ... -
Nodavirus in farmed Atlantic cod Gadus morhua in Norway
(Peer reviewed; Journal article, 2007-09-14)Viral encephalopathy and retinopathy (VER) was diagnosed in 5 to 24 g sized farmed Atlantic cod Gadus morhua kept in sea cages at Parisvatn, Hordaland county, on the west coast of Norway. Moderate mortality (10 to 15%) was ... -
Ossification of Atlantic cod (Gadus morhua) – Developmental stages revisited
(Peer reviewed; Journal article, 2017-02)In studies of marine larvae, it is common to use days post-hatch as a developmental reference point. We show that age is a poor measure of morphological and physiological development in Atlantic cod. Therefore, we propose ... -
Redox regulation in Atlantic cod (Gadus morhua) embryos developing under normal and heat-stressed conditions
(Peer reviewed; Journal article, 2013-04)With regard to predicted oceanic warming, we studied the effects of heat stress on the redox system during embryonic development of Atlantic cod (Gadus morhua), with emphasis on the glutathione balance, activities of key ... -
Reproductive investment in Atlantic cod off Newfoundland: Contrasting trends between males and females
(Peer reviewed; Journal article, 2017-08-31)Life history theory predicts selection for higher reproductive investment in response to increased mortality among mature individuals. We tested this prediction over the period from 1978 to 2013 for three populations of ... -
Sex differentiation in Atlantic cod (Gadus morhua L.): morphological and gene expression studies
(Peer reviewed; Journal article, 2012-06-18)Background: In differentiated gonochoristic species, a bipotential gonad develops into an ovary or testis during sex differentiation. Knowledge about this process is necessary to improve methods for masculinizing genetically ... -
Triploid induction in Atlantic cod (Gadus morhua L.) by the use of different pressure levels
(Master thesis, 2011-10-31)In the present experiment, different levels of pressure were investigated to see if it was possible to induce triploidy at a lower pressure level than previously used for Atlantic cod (Gadus morhua). Newly fertilized eggs ... -
The two-step development of a duplex retina involves distinct events of cone and rod neurogenesis and differentiation
(Peer reviewed; Journal article, 2016-08)Unlike in mammals, persistent postembryonic retinal growth is a characteristic feature of fish, which includes major remodeling events that affect all cell types including photoreceptors. Consequently, visual capabilities ...