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Dispersal and productivity of Chinook (Oncorhynchus tshawytscha) and coho (Oncorhynchus kisutch) salmon colonizing newly accessible habitat
| Content Provider | Semantic Scholar |
|---|---|
| Author | Anderson, Joseph H. Faulds, Paul L. Burton, Karl D. Koehler, Michele E. Atlas, William I. Quinn, Thomas P. |
| Copyright Year | 2015 |
| Abstract | Following construction of a fish ladder at Landsburg Diversion Dam on the Cedar River, Washington, USA, in fall 2003, we used DNA-based parentage to identify second generation Chinook (Oncorhynchus tshawytscha) and coho (Oncorhynchus kisutch) salmon as recruits that were produced above the dam or “strays” dispersing into the new habitat that were produced elsewhere. For both species, strays colonized immediately but decreased as a proportion of the total run over time. Chinook salmon strays were more numerous in years when the species was more abundant below the dam and included a much larger proportion of hatchery origin salmon than did coho salmon. Productivity, calculated as the ratio of female recruits sampled at the dam to female spawners, exceeded replacement in all four coho salmon cohorts but only two of five Chinook salmon cohorts, leading to more rapid population expansion of coho salmon. However, estimates of fishing mortality and recruitment into the Cedar River below the dam substantially inc... |
| Starting Page | 454 |
| Ending Page | 465 |
| Page Count | 12 |
| File Format | PDF HTM / HTML |
| DOI | 10.1139/cjfas-2014-0180 |
| Alternate Webpage(s) | https://doc-0s-1o-docs.googleusercontent.com/docs/securesc/ha0ro937gcuc7l7deffksulhg5h7mbp1/dfe95tq2ediph5kfsdetid1vdfqc9ej2/1541368800000/05139430942857919412/*/0B_sa2AnC9DW4UkUwaU1UWWtxRDg?e=download |
| Alternate Webpage(s) | https://doi.org/10.1139/cjfas-2014-0180 |
| Volume Number | 72 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
