Some Effects of Stocking Coho Salmon Fry and Supplemental Instream Feeding on Wild and Hatchery-Origin Salmon

Autor:	J. R. Irvine, R. E. Bailey
Rok vydání:	1992
Předmět:	Fishery endocrine system Stocking Ecology biology Sympatric speciation Oncorhynchus Management Monitoring Policy and Law Aquatic Science biology.organism_classification Ecology Evolution Behavior and Systematics Hatchery
Zdroj:	North American Journal of Fisheries Management. 12:125-130
ISSN:	1548-8675 0275-5947
DOI:	10.1577/1548-8675(1992)012<0125:seoscs>2.3.co;2
Popis:	Regular addition of hatchery food to a small coastal stream during summer and early fall appeared to benefit fry of hatchery-origin coho salmon Oncorhynchus kisutch more than sympatric, naturally occurring wild fry. At a supplemental-feeding site, hatchery fry were larger and in better condition than wild fry, and the size discrepancy between the two groups was greater than at an adjacent site where supplemental feeding did not occur. At this unsupplemented site, hatchery fry were consistently greater in length and weight than wild fry, but wild fry were generally in better condition. The long-term benefits realized by stocking and supplemental feeding of coho salmon fry remain uncertain.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::688d2e244692b1d6d93af82107dc2c71 https://doi.org/10.1577/1548-8675(1992)012<0125:seoscs>2.3.co Zobrazit plný text záznamu Plný text