Cross-shoal variability in the feeding habits of migrating Atlantic cod (Gadus morhua)

Oecologia ◽  
1996 ◽  
Vol 108 (1) ◽  
pp. 192-196 ◽  
Author(s):  
Elisabeth M. DeBlois ◽  
George A. Rose
Keyword(s):  
Gadus Morhua ◽  
Atlantic Cod ◽  
Feeding Habits

Food-Induced Granulomatosis in European Smelt, Osmerus eperlanus

1987 ◽  
Vol 44 (11) ◽  
pp. 1848-1854 ◽  
Author(s):  
K. Anders ◽  
H. Möller
Keyword(s):  
Gadus Morhua ◽  
Atlantic Cod ◽  
Buccal Cavity ◽  
Feeding Habits ◽  
Important Food ◽  
The North ◽  
Rate Of Increase ◽  
The North Sea ◽  
Osmerus Eperlanus ◽  
Important Food Item

Many European smelt, Osmerus eperlanus, in tributary rivers to the North Sea are affected by granulomatosis in the buccal cavity. The granulomas are caused by spines and leg fragments of amphipods, an important food item of smelt. Granuloma prevalence increases with increasing fish size. The rate of increase slows down in very large fish, probably as an effect of changed feeding habits. Fungi and virus-like particles in the granulomas are assumed to be secondary invaders. Granulomas are occasionally found in Atlantic cod, Gadus morhua, and flounder, Platichthys flesus, also.

scholarly journals Feeding habits of harp and hooded seals in Greenland waters

2000 ◽  
Vol 2 ◽  
pp. 50 ◽  
Author(s):  
Finn O Kapel
Keyword(s):  
Gadus Morhua ◽  
Atlantic Cod ◽  
Feeding Habits ◽  
Stomach Contents ◽  
Minor Role ◽  
Published Data ◽  
Polar Cod ◽  
Small Fish ◽  
Greenland Halibut ◽  
Important Prey

Results of stomach contents analyses of harp and hooded seals collected in West Greenland waters in the period 1986-1993 are reviewed, and compared with published data and circumstantial information from local hunters. The diet of harp seals in this region is variable but consists mainly of pelagic crustaceans (Thysanoessa spp. and Parathemisto libellula) and small fish species like capelin (Mallotus villosus), sandeel (Ammodytes spp.), polar cod (Boreogadus saida) and Arctic cod (Arctogadus glacialis). Species of importance for commercial fisheries in Greenland, such as Northern prawn (Pandalus borealis), Atlantic cod (Gadus morhua), and Greenland halibut (Reinhardtius hippoglossoides) play a minor role in the diet of harp seals in this area.Variation in the diet of hooded seals is less well documented, but in addition to the species also taken by harp seals, larger demersal fishes like Greenland halibut, redfish (Sebastes spp.), cod, and wolffish (Anarhichas minor) are apparently important prey items.

Effects of temperature on life history set the sensitivity to fishing in Atlantic cod Gadus morhua

2014 ◽  
Vol 514 ◽  
pp. 217-229 ◽  
Author(s):  
HY Wang ◽  
LW Botsford ◽  
JW White ◽  
MJ Fogarty ◽  
F Juanes ◽  
...  
Keyword(s):  
Life History ◽  
Gadus Morhua ◽  
Atlantic Cod ◽  
Effects Of Temperature

Responses of Atlantic cod Gadus morhua head kidney leukocytes to phytase produced by gastrointestinal-derived bacteria

2009 ◽  
Vol 36 (4) ◽  
pp. 883-891 ◽  
Author(s):  
Carlo C. Lazado ◽  
Christopher Marlowe A. Caipang ◽  
Sanchala Gallage ◽  
Monica F. Brinchmann ◽  
Viswanath Kiron
Keyword(s):  
Gadus Morhua ◽  
Atlantic Cod ◽  
Head Kidney

Some recent data on sperm morphology and motility kinetics in Atlantic cod (Gadus morhua L.)

2021 ◽  
Author(s):  
Sayyed Mohammad Hadi Alavi ◽  
Azadeh Hatef ◽  
Ian A.E. Butts ◽  
Olga Bondarenko ◽  
Jacky Cosson ◽  
...  
Keyword(s):  
Gadus Morhua ◽  
Sperm Morphology ◽  
Atlantic Cod

Natural mortality from poor condition in Atlantic cod (Gadus morhua)

2000 ◽  
Vol 57 (4) ◽  
pp. 826-836 ◽  
Author(s):  
Jean-Denis Dutil ◽  
Yvan Lambert
Keyword(s):  
Gadus Morhua ◽  
Atlantic Cod ◽  
Negative Impact ◽  
Fish Muscle ◽  
Early Summer ◽  
Wild Fish ◽  
Natural Mortality ◽  
Muscle Lactate ◽  
Lactate Dehydrogenase Activity ◽  
Poor Condition

The extent of energy depletion was assessed in Atlantic cod (Gadus morhua) in spring and early summer (1993-1995) to assess relationships between poor condition and natural mortality. Several indices of condition were compared in wild fish in the northern Gulf of St. Lawrence and in fish exposed to a prolonged period of starvation in laboratory experiments. Discriminant analyses classified only a small fraction of the wild fish as similar to cod that did not survive and a much larger fraction as similar to cod that survived starvation. This percentage increased from April to May and peaked in June 1993 and 1994. Condition factor and muscle somatic index allowed a clear distinction between live and dead fish. Muscle lactate dehydrogenase activity suggested that cod had experienced a period of negative growth early in 1993, 1994, and 1995. Fish classified as similar to starved individuals were characterized by a higher gonad to liver mass ratio than others. Reproduction may have a negative impact on survival not only in spring but also later into summer, as some individuals were found not to have recovered by late summer. This study shows that natural mortality from poor condition contributed to lower production in the early 1990s.

scholarly journals Gastrointestinal microbial community changes in Atlantic cod (Gadus morhua) exposed to crude oil

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Andrea Bagi ◽  
Even Sannes Riiser ◽  
Hilde Steine Molland ◽  
Bastiaan Star ◽  
Thomas H. A. Haverkamp ◽  
...  
Keyword(s):  
Microbial Community ◽  
Crude Oil ◽  
Gadus Morhua ◽  
Atlantic Cod ◽  
Community Changes

scholarly journals Development of Atlantic cod (Gadus morhua) exposed to produced water during early life stages: Effects on embryos, larvae, and juvenile fish

2010 ◽  
Vol 70 (5) ◽  
pp. 383-394 ◽  
Author(s):  
Sonnich Meier ◽  
H. Craig Morton ◽  
Gunnar Nyhammer ◽  
Bjørn Einar Grøsvik ◽  
Valeri Makhotin ◽  
...  
Keyword(s):  
Early Life ◽  
Gadus Morhua ◽  
Produced Water ◽  
Atlantic Cod ◽  
Juvenile Fish ◽  
Life Stages ◽  
Early Life Stages

Induction of triploidy in Atlantic cod (Gadus morhua L.) by thermal shocks

Aquaculture ◽  
2007 ◽  
Vol 272 ◽  
pp. S276
Author(s):  
A. Kettunen ◽  
G. Kauric ◽  
S. Peruzzi
Keyword(s):  
Gadus Morhua ◽  
Atlantic Cod ◽  
Thermal Shocks
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