Marine effect of introduced salmonids: Prey consumption by exotic steelhead and anadromous brown trout in the Patagonian Continental Shelf
Limnology and Oceanography
By: J. Ciancio, D.A. Beauchamp, and M. Pascual
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Abstract
On the basis of stable isotope analysis, we estimated the marine diet of the most abundant anadromous salmonid species in Patagonian Atlantic basins. The results were coupled with bioenergetic and population models to estimate the consumption of food by salmonids and was compared with that by seabirds, the most abundant top predators in the area. Amphipods were the main salmonid prey, followed by sprat, silversides, squid, and euphausiids. The total consumption, even assuming large anadromous salmonid populations, represented <5% of the total consumption by seabirds. We also identified the particular seabird colonies and artisanal fisheries with which salmonid trophic interactions at a more local scale could be significant. ?? 2010, by the American Society of Limnology and Oceanography, Inc.
Suggested Citation
Ciancio, J., Beauchamp, D., Pascual, M., 2010, Marine effect of introduced salmonids: Prey consumption by exotic steelhead and anadromous brown trout in the Patagonian Continental Shelf: Limnology and Oceanography, v. 55, no. 5, p. 2181-2192, https://doi.org/10.4319/lo.2010.55.5.2181.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Marine effect of introduced salmonids: Prey consumption by exotic steelhead and anadromous brown trout in the Patagonian Continental Shelf |
| Series title | Limnology and Oceanography |
| DOI | 10.4319/lo.2010.55.5.2181 |
| Volume | 55 |
| Issue | 5 |
| Publication Date | September 16, 2010 |
| Year Published | 2010 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Limnology and Oceanography |
| First page | 2181 |
| Last page | 2192 |