Predation on Chinook Salmon Parr by Hatchery Salmonids and Fallfish in the Salmon River, New York
| Autor: | Ross Abbett, James H. Johnson, Marc A. Chalupnicki, James E. McKenna, Christopher C. Nack |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Fallfish Chinook wind geography geography.geographical_feature_category Ecology Semotilus 010604 marine biology & hydrobiology Management Monitoring Policy and Law Aquatic Science Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences Hatchery Predation Fishery Tributary Oncorhynchus Ecology Evolution Behavior and Systematics |
| Zdroj: | North American Journal of Fisheries Management. 36:74-84 |
| ISSN: | 1548-8675 0275-5947 |
| Popis: | Naturally reproduced Chinook Salmon Oncorhynchus tshawytscha contribute substantially to the fishery in Lake Ontario. The Salmon River, a Lake Ontario tributary in New York, produces the largest numbers of naturally spawned Chinook Salmon, with parr abundance in the river often exceeding 10 million. In the spring of each year, large numbers of hatchery salmonid yearlings—potential predators of Chinook Salmon parr—are released into the Salmon River by the New York State Department of Environmental Conservation. We sought to examine predation on Chinook Salmon parr in the Salmon River during May and June prior to out-migration. Over the 4 years examined (2009–2012), annual consumption of Chinook Salmon parr by hatchery-released yearling steelhead O. mykiss and Coho Salmon O. kisutch ranged from 1.5 to 3.3 million and from 0.4 to 2.1 million, respectively. In 2009, Fallfish Semotilus corporalis were estimated to consume 2.9 million Chinook Salmon parr. Predation was higher in May, when the average TL... |
| Databáze: | OpenAIRE |
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