Aggression and growth of Atlantic salmon parr. I. Different stocking densities and size groups
The aggressive behaviour and growth of salmon parr under crowded rearing conditions was studied at four different densities. One or several fish per aquarium was dominant, displaying a kind of territorial defence and committing a significant part of the observed aggressive acts. Large subordinate fi...
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[Fiskeridirektoratets havforskningsinstitutt]
1986
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Online Access: | http://hdl.handle.net/11250/114520 |
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ftimr:oai:imr.brage.unit.no:11250/114520 2024-09-15T17:56:22+00:00 Aggression and growth of Atlantic salmon parr. I. Different stocking densities and size groups Fernö, Anders 1986 396107 bytes application/pdf http://hdl.handle.net/11250/114520 eng eng [Fiskeridirektoratets havforskningsinstitutt] Fiskeridirektoratets skrifter, Serie Havundersøkelser vol 18 no 3 http://hdl.handle.net/11250/114520 s. 113-122 Research report 1986 ftimr 2024-07-31T03:37:25Z The aggressive behaviour and growth of salmon parr under crowded rearing conditions was studied at four different densities. One or several fish per aquarium was dominant, displaying a kind of territorial defence and committing a significant part of the observed aggressive acts. Large subordinate fish were more aggressive than small fish at all densities. The ratio between the number of performed and received aggressive actions was about the same for large and small subordinate fish at the lowest density, but with increasing density this ratio became higher for large parr. Small fish grew slower than large fish at the highest density and suffered generally from a higher mortality. Factors other than aggression also seemed to influence growth, as both the growth rate and number of aggressive acts per fish decreased with increasing density. Report Atlantic salmon Institute for Marine Research: Brage IMR |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
The aggressive behaviour and growth of salmon parr under crowded rearing conditions was studied at four different densities. One or several fish per aquarium was dominant, displaying a kind of territorial defence and committing a significant part of the observed aggressive acts. Large subordinate fish were more aggressive than small fish at all densities. The ratio between the number of performed and received aggressive actions was about the same for large and small subordinate fish at the lowest density, but with increasing density this ratio became higher for large parr. Small fish grew slower than large fish at the highest density and suffered generally from a higher mortality. Factors other than aggression also seemed to influence growth, as both the growth rate and number of aggressive acts per fish decreased with increasing density. |
format |
Report |
author |
Fernö, Anders |
spellingShingle |
Fernö, Anders Aggression and growth of Atlantic salmon parr. I. Different stocking densities and size groups |
author_facet |
Fernö, Anders |
author_sort |
Fernö, Anders |
title |
Aggression and growth of Atlantic salmon parr. I. Different stocking densities and size groups |
title_short |
Aggression and growth of Atlantic salmon parr. I. Different stocking densities and size groups |
title_full |
Aggression and growth of Atlantic salmon parr. I. Different stocking densities and size groups |
title_fullStr |
Aggression and growth of Atlantic salmon parr. I. Different stocking densities and size groups |
title_full_unstemmed |
Aggression and growth of Atlantic salmon parr. I. Different stocking densities and size groups |
title_sort |
aggression and growth of atlantic salmon parr. i. different stocking densities and size groups |
publisher |
[Fiskeridirektoratets havforskningsinstitutt] |
publishDate |
1986 |
url |
http://hdl.handle.net/11250/114520 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
s. 113-122 |
op_relation |
Fiskeridirektoratets skrifter, Serie Havundersøkelser vol 18 no 3 http://hdl.handle.net/11250/114520 |
_version_ |
1810432570256523264 |