We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Shifting reproductive success in a shoal of Atlantic Cod, Gadus morhua L.
- Authors
Skjæraasen, Jon; Hutchings, Jeffrey
- Abstract
Individual and temporal variability in the spawning behaviour of Atlantic Cod ( Gadus morhua L.) was examined by studying wild and reared individuals from the same putative population in a common spawning arena. The number of eggs fertilized per male was best explained by the number of aggressive interactions initiated by each male. A strong skew in male reproductive success and a temporal shift in male fertilization success were also observed. The latter co-occurred with an apparent similar temporal shift in the reproductive behaviour of the individual males. We hypothesize that energetic costs associated with reproduction, potentially mediated by sperm depletion in dominant individuals, may be responsible for temporal shifts in mating behaviour and reproductive success of male Atlantic Cod. We suggest that this hypothesis merits further study.
- Subjects
PACIFIC cod; ATLANTIC cod; INTER-male aggression; ANIMAL sexual behavior; FERTILIZATION (Biology); SEXUAL dominance &; submission; FISH spawning; REPRODUCTION; ANIMAL behavior
- Publication
Environmental Biology of Fishes, 2010, Vol 88, Issue 4, p311
- ISSN
0378-1909
- Publication type
Article
- DOI
10.1007/s10641-010-9650-9