Effect of ectoparasite infestation density and life‑history stages on the swimming performance of Atlantic salmon Salmo salar
| Autor: | Mette Remen, Tim Dempster, Frode Oppedal, Samantha Bui |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
animal diseases SH1-691 Management Monitoring Policy and Law Aquatic Science medicine.disease_cause 01 natural sciences Salmon louse Infestation parasitic diseases medicine VDP::Landbruks- og fiskerifag: 900::Fiskerifag: 920::Fiskehelse : 923 Aquaculture. Fisheries. Angling Parasite hosting Salmo Parasite density QH540-549.5 Water Science and Technology biology Ecology 010604 marine biology & hydrobiology 04 agricultural and veterinary sciences biology.organism_classification Fishery Lepeophtheirus 040102 fisheries 0401 agriculture forestry and fisheries Life History Stages VDP::Agriculture and fisheries science: 900::Fisheries science: 920::Fish health: 923 Copepod |
| Zdroj: | Aquaculture Environment Interactions, Vol 8, Pp 387-395 (2016) Aquaculture environment interactions |
| ISSN: | 1869-7534 |
| Popis: | To overcome sustainability obstacles and improve operations, the Atlantic salmon farming industry is testing novel approaches to production. Redistributing farm sites to offshore locations is one such solution; however, tolerance to high-current velocity sites must be consid- ered, particularly if fish health status is compromised by parasites. We tested the effect of parasite density and life-history stage on the swimming performance of Atlantic salmon Salmo salar using a swim flume. Salmon with 3 different salmon lice Lepeophtheirus salmonis densities (0, 0.02 ± 0.01 and 0.11 ± 0.01 lice cm �2 (mean ± SE)) were tested across the 4 major life-history stages of lice (copepodid, chalimus, pre-adult and adult) for critical swimming performance (Ucrit). Salmon Ucrit declined slightly by a mean of 0.04 to 0.10 body lengths s �1 with high parasite densities compared to uninfested and low densities, across the lice stages, while progression through the parasite life- history stages had little effect on swimming performance. Our results suggest that increasing infestation density of salmon lice incurs negative fitness consequences for farmed Atlantic salmon held in high-current velocity sites, with little difference in costs associated with attachment by different life-history stages of the lice. |
| Databáze: | OpenAIRE |
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