Competition in cultured and wild salmonid juveniles with emphasis on competitive interactions between farmed Atlantic salmon (Salmo salar) and wild coho salmon (Oncorhynchus kisutch) or coastal cutthroat trout (O. clarki clarki) ...
The purpose of my research was to investigate the relative competitive ability of cultured and wild salmon to provide insight into the potential effects of introduction of cultured salmon on Pacific salmon species. Aquarium trials involving equal contests (i.e. size matched, simultaneously introduce...
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| Format: | Text |
| Language: | English |
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University of British Columbia
2009
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| Online Access: | https://dx.doi.org/10.14288/1.0091402 https://doi.library.ubc.ca/10.14288/1.0091402 |
| Summary: | The purpose of my research was to investigate the relative competitive ability of cultured and wild salmon to provide insight into the potential effects of introduction of cultured salmon on Pacific salmon species. Aquarium trials involving equal contests (i.e. size matched, simultaneously introduced individuals) indicate that wild coho salmon (Oncorhynchus kisutch) populations (from Salmon River and Street Creek) were competitively matched in contests with farmed coho salmon (originally from Kitimat River). In equal contests between farmed Atlantic salmon (Salmo salar) (Mowi strain) and these wild coho salmon populations or coastal cutthroat trout (O. clarki clarki), Atlantic salmon were subordinate in all cases. When Atlantic salmon were given a residence advantage, however, they were competitively equal to both wild coho salmon populations, but remained subordinate to coastal cutthroat trout. Contests in which Atlantic salmon were given a 10-30% length advantage indicate that Atlantic salmon juveniles ... |
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