Spatial and temporal distribution of farmed Atlantic salmon after experimental release from sea cage sites in Newfoundland (Canada)
| Autor: | Lorraine C. Hamilton, David Cote, Shayne McDonald, Dounia Hamoutene, Sebastien Donnet, C. J. Pennell, Shannon Cross, Keith D. Clarke, Kimberly Marshall |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
geography geography.geographical_feature_category business.industry 010604 marine biology & hydrobiology Distribution (economics) Pelagic zone Starvation (glaciology) Fjord Aquatic Science Biology 010603 evolutionary biology 01 natural sciences Predation Fishery Aquaculture Biological dispersal business Bay |
| Zdroj: | Aquaculture. 492:147-156 |
| ISSN: | 0044-8486 |
| DOI: | 10.1016/j.aquaculture.2018.03.040 |
| Popis: | In this study, a series of experimental releases of aquaculture fish were conducted to simulate escapes in a Canadian fjord (Fortune Bay, Newfoundland and Labrador) and investigate the hierarchical influence of fish size, season, and release location on dispersal patterns and residency time within the fjord. The behaviour of farmed salmon on the south coast of Newfoundland shared qualitative similarities to other regions of the world despite considerable differences in climate, geography and strain. Our results show the following: 1) fast dispersal times, 2) season-specific movement responses, and 3) infrequent migrations to the open ocean. Since animals were not detected beyond a few weeks it was assumed that most individuals experienced natural mortality within the fjord of Fortune Bay, likely due to predation and starvation. Negative interactions of escaped farmed salmon are therefore likely to be largely contained within the fjord for short temporal durations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect