期刊
JOURNAL OF FISH BIOLOGY
卷 93, 期 2, 页码 263-271出版社
WILEY
DOI: 10.1111/jfb.13684
关键词
aquaculture; host-parasite; leaping; louse; sub-lethal effects; trade-offs
资金
- Simon Fraser University
- University of Toronto
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Killam Postdoctoral Fellowship
- NSERC
- Alfred P. Sloan Foundation
- Canada Research Chair
- Tom Buell Endowment Fund by Pacific Salmon Foundation
- B.C. Leading Edge Endowment Fund
We conducted a manipulative field experiment to determine whether the leaping behaviour of wild juvenile sockeye salmon Oncorhynchus nerka dislodges ectoparasitic sea lice Caligus clemensi and Lepeophtheirus salmonis by comparing sea-lice abundances between O. nerka juveniles prevented from leaping and juveniles allowed to leap at a natural frequency. Juvenile O. nerka allowed to leap had consistently fewer sea lice after the experiment than fish that were prevented from leaping. Combined with past research, these results imply potential costs due to parasitism and indicate that the leaping behaviour of juvenile O. nerka does, in fact, dislodge sea lice.
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