Changes in Atlantic cod (Gadus morhua L.) sperm quality during the spawning season

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Changes in Atlantic cod (Gadus morhua L.) sperm quality during the spawning season

The biology of cod reproduction is well described in the scientific literature. However, sperm biology and spermatozoa management are poorly studied in this species. Because of its recent farming expansion, a better knowledge of cod gametes is becoming especially useful. This work aimed at establishing tools to study sperm biology in cod, and also investigated the existence of changes in cod sp...

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Interest in cod aquaculture has been growing over the last few decades, resulting in varied research on cod aimed at optimising conditions for both growth and survival. Cultural conditions may increase the danger of infections. Disease control by vaccination has proved successful in the farming of several fish species. However, cod do not respond well to vaccination. Recently it was shown that ...

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Spawning Biomass Variation in Atlantic Cod (Gadus morhua) in Flemish Cap in Relation to Changes in Growth and Maturation

Drastic changes in both ageand length-at-maturity of cod (Gadus morhua) on Flemish Cap have been observed during this decade. In the present paper, growth by cohort in this period was analyzed and compared with the observed trend in maturation. Different cohorts displayed different growth rates, the strongest 1990 year-class showing fastest growth. The compensatory response to lower population ...

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Competitive spawning success and fertility of triploid male Atlantic cod Gadus morhua

Farmed Atlantic cod Gadus morhua have been hypothesized to pose a risk to the natural environment through escape of fish or release of their gametes from sea cages. The use of sterile triploids has been suggested as a way to prevent spawning of farmed fish, whether escaped from their cages or still contained within them. This laboratory study examined the reproductive potential of triploid male...

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ژورنال

عنوان ژورنال: Aquaculture Research

سال: 2008

ISSN: 1355-557X,1365-2109

DOI: 10.1111/j.1365-2109.2007.01852.x