Comparison of competitive ability between native and introduced salmonids: Evidence from pairwise contests
Brown trout. Salmo trutta, and rainbow trout, Oncorhynchus mykiss, have been introduced to freshwaters in Hokkaido, Japan. Today, it is recognized that these introduced salmonids have negative impacts on native salmonids such as white-spotted charr, Salvelinus leucomaenis, and masu salmon, O. masou....
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| Veröffentlicht in: | Ichthyological research 2004-08, Vol.51 (3), p.191-194 |
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| creator | Hasegawa, K. (Hokkaido Univ., Sapporo (Japan)) Yamamoto, T Murakami, M Maekawa, K |
| description | Brown trout. Salmo trutta, and rainbow trout, Oncorhynchus mykiss, have been introduced to freshwaters in Hokkaido, Japan. Today, it is recognized that these introduced salmonids have negative impacts on native salmonids such as white-spotted charr, Salvelinus leucomaenis, and masu salmon, O. masou. In particular, interspecific competition may be an important mechanism that could contribute to the exclusion for native salmonids. In this study, experimental pairwise contests were conducted to compare interference competitive ability between native and introduced salmonids. We demonstrated that brown trout were competitively superior to white-spotted charr and masu salmon whereas rainbow trout were superior to white-spotted charr. We suggest that introduced brown trout negatively impact both white-spotted charr and masu salmon, and introduced rainbow trout negatively impact white-spotted charr. |
| doi_str_mv | 10.1007/s10228-004-0214-x |
| format | Article |
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| identifier | ISSN: 1341-8998 |
| ispartof | Ichthyological research, 2004-08, Vol.51 (3), p.191-194 |
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| language | eng |
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| subjects | Aquaculture BIOLOGICAL COMPETITION Fish Freshwater Genetic engineering INTRODUCED BREEDS ONCORHYNCHUS MYKISS SALMO TRUTTA Salmon SALMONOIDEI Salvelinus leucomaenis WILD ANIMALS |
| title | Comparison of competitive ability between native and introduced salmonids: Evidence from pairwise contests |
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