The effects of temperature on metabolic rates of different life stages of Calanus glacialis in the Barents Sea

Polar Biology ◽  
1988 ◽  
Vol 8 (6) ◽  
pp. 457-461 ◽  
Author(s):  
Kurt S. Tande
Keyword(s):  
Barents Sea ◽  
Life Stages ◽  
Metabolic Rates ◽  
The Barents Sea ◽  
Calanus Glacialis ◽  
Effects Of Temperature

Comparison of DNA damage in the early life stages of cod, Gadus morhua, originating from the Barents Sea and Baltic Sea

1996 ◽  
Vol 42 (1-4) ◽  
pp. 119-123 ◽  
Author(s):  
Gunilla Ericson ◽  
Gun Åkerman ◽  
Birgitta Liewenborg ◽  
Lennart Balk
Keyword(s):  
Dna Damage ◽  
Baltic Sea ◽  
Early Life ◽  
Gadus Morhua ◽  
Barents Sea ◽  
Life Stages ◽  
Early Life Stages ◽  
The Barents Sea

scholarly journals Reproductive strategy of a migratory fish stock: implications of spatial variations in natural mortality

2016 ◽  
Vol 73 (12) ◽  
pp. 1742-1749 ◽  
Author(s):  
Øystein Langangen ◽  
Geir Ottersen ◽  
Lorenzo Ciannelli ◽  
Frode B. Vikebø ◽  
Leif Christian Stige
Keyword(s):  
Reproductive Strategy ◽  
Early Life ◽  
Gadus Morhua ◽  
Barents Sea ◽  
Spatial Variations ◽  
Fish Stock ◽  
Life Stages ◽  
Early Life Stages ◽  
The Barents Sea ◽  
Survival And Growth

We investigate how the reproductive strategy in a migratory marine fish may be influenced by spatial variations in mortality in early life stages. In particular, we examine how spawning time and location affect offspring survival and growth. A drift model for early life stages (eggs to age 1) of the Barents Sea cod (Gadus morhua) is combined with empirical estimates of spatial variation in mortality at two different life stages. We examine seasonal and interannual differences in survival and growth in offspring originating from two spawning grounds, with the central site requiring higher migration distance, and hence cost, than the northern site. When accounting for spatially explicit mortality fields, central and northern spawned offspring have about equal survival, as do early and late spawned offspring. Furthermore, central spawned offspring grow faster and are likely to reach a larger size compared with northern spawned offspring. Our results indicate that the fitness benefit of southward migration in the Barents Sea cod is not mainly due to higher early survival of offspring, but rather due to effects of offspring acquiring a larger size.

The combined effect of transport and temperature on distribution and growth of larvae and pelagic juveniles of Arcto-Norwegian cod

2005 ◽  
Vol 62 (7) ◽  
pp. 1375-1386 ◽  
Author(s):  
Frode Vikebø ◽  
Svein Sundby ◽  
Bjørn Ådlandsvik ◽  
Øyvind Fiksen
Keyword(s):  
Barents Sea ◽  
Field Studies ◽  
Trophic Levels ◽  
Direct Effects ◽  
Climatic Parameters ◽  
Fish Stocks ◽  
The Barents Sea ◽  
Effects Of Temperature ◽  
Pelagic Juveniles ◽  
Pelagic Juvenile

Abstract Temperature has been identified in field studies as the physical parameter most influential on growth and recruitment of Arcto-Norwegian cod. However, it has been pointed out by many authors that temperature in this context has not only direct effects on the cod, but also indirect effects through lower trophic levels. Moreover, it has been said that temperature might also be a proxy for other climatic parameters. The present paper analyses the direct quantitative effects of temperature on larval and pelagic juvenile growth from spawning in Lofoten until the 0-group fish settle in the Barents Sea. The approach taken is that of a modelling study, supported by analysis of existing data on fish stocks and climate. It is shown that transport and temperature alone can reproduce key features of the 0-group weight distribution and concentration in the Barents Sea for two consecutive years. The extent of the dispersion of the larvae and pelagic juveniles, as well as the ambient temperature they experience on their route, are shown to depend upon their depth in the water column and, to a lesser degree, the time of spawning.

scholarly journals Predation on early life stages is decisive for year-class strength in the Barents Sea capelin (Mallotus villosus) stock

2015 ◽  
Vol 73 (2) ◽  
pp. 182-195 ◽  
Author(s):  
Harald Gjøsæter ◽  
Elvar H. Hallfredsson ◽  
Nina Mikkelsen ◽  
Bjarte Bogstad ◽  
Torstein Pedersen
Keyword(s):  
Early Life ◽  
Barents Sea ◽  
Life Stages ◽  
Early Life Stages ◽  
Mallotus Villosus ◽  
The Barents Sea ◽  
Class Strength ◽  
Capelin Mallotus Villosus

scholarly journals Cod, haddock, saithe, herring, and capelin in the Barents Sea and adjacent waters: a review of the biological value of the area

2009 ◽  
Vol 67 (1) ◽  
pp. 87-101 ◽  
Author(s):  
Erik Olsen ◽  
Sondre Aanes ◽  
Sigbjørn Mehl ◽  
Jens Christian Holst ◽  
Asgeir Aglen ◽  
...  
Keyword(s):  
Anthropogenic Impact ◽  
Barents Sea ◽  
Life Stages ◽  
Specific Knowledge ◽  
Biological Value ◽  
Larval Distribution ◽  
The Barents Sea ◽  
Spawning Areas ◽  
Species Specific ◽  
Feeding Grounds

Abstract Olsen, E., Aanes, S., Mehl, S., Holst, J. C., Aglen, A., and Gjøsæter, H. 2010. Cod, haddock, saithe, herring, and capelin in the Barents Sea and adjacent waters: a review of the biological value of the area. – ICES Journal of Marine Science, 67: 87–101. Cod, haddock, saithe, herring, and capelin are the most important fish species in the Barents Sea and adjacent waters. Ecosystem-based management requires species-specific knowledge of the biological value and vulnerability throughout their life history and distributional range. For each of the five species and four annual quarters, the spawning (egg) areas, nursery areas for larvae and juveniles, and feeding grounds for adults are described and mapped. Areas of eggs (spawning) and larvae were the most important because these are the life stages when fish are most vulnerable to anthropogenic impact. The greatest overlap of spawning areas was from Røstbanken in the south to the Varanger Peninsula in the northeast, and overlap of larval distribution was more extensive.

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