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Growth hormone affe...
Growth hormone affects behaviour of wild brown trout Salmo trutta in territorial owner–intruder conflicts
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- Neregård, Lena, 1973 (författare)
- Gothenburg University,Göteborgs universitet,Zoologiska institutionen,Department of Zoology
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Sundt-Hansen, L (författare)
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- Björnsson, Björn Thrandur, 1952 (författare)
- Gothenburg University,Göteborgs universitet,Zoologiska institutionen,Department of Zoology
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- Johnsson, Jörgen I, 1959 (författare)
- Gothenburg University,Göteborgs universitet,Zoologiska institutionen, ekologisk zoologi,Department of Zoology, Animal Ecology
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(creator_code:org_t)
- Wiley, 2008
- 2008
- Engelska.
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Ingår i: Journal of Fish Biology. - : Wiley. - 1095-8649 .- 0022-1112. ; 73:10, s. 2341-2351
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The effects of growth hormone (GH) implants on aggression, and ability to win dyadic territorial conflicts were studied in brown trout Salmo trutta parr. Bovine GH or vehicle (C) was given to either the territory owner or the intruder in four treatment combinations: C and C, C and GH, GH and C, GH and GH (owner and intruder). GH-treated intruders initiated significantly more conflicts compared to control intruders. Furthermore, GH treatment of either the owner or intruder tended to increase aggression of the intruder. This indicates that intruders have more scope for motivational increase, while the motivation of owners is already at a maximum. The GH treatment, however, did not affect the outcome of the conflict. It thus appears that growth enhancement increases intruder aggression without increasing the chance of winning the conflict, which may have implications for the effect of growth-selected or growth-enhanced farmed Atlantic salmon Salmo salar on wild populations.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Nyckelord
- aggression
- conflict resolution
- GH
- salmonid
- social interaction
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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