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Seaward Migration and Gill (Na+K)‐ATPase Activity of Spring Chinook Salmon in an Artificial Stream
Author(s) -
Hart C. E.,
Concan Greg,
Fustish C. A.,
Ewing R. D.
Publication year - 1981
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1981)110<44:smagna>2.0.co;2
Subject(s) - chinook wind , hatchery , juvenile , spring (device) , fishery , atpase , biology , fish <actinopterygii> , adenosine triphosphatase , fish hatchery , oncorhynchus , zoology , ecology , enzyme , aquaculture , fish farming , biochemistry , physics , thermodynamics
Pelton ladder on the Deschutes River was used to estimate migration tendency in juvenile spring chinook salmon. A positive relationship between elevated levels of gill (Na+K)‐adenosine triphosphatase (ATPase) and migration tendency was determined in 1977 and 1978. Migrant fish had significantly higher ATPase activities than nonmigrants. In 1978, a distinctive peak in (Na+K)‐ATPase was observed in hatchery‐reared fish, while this peak was absent in 1977. This suggests caution in the use of gill (Na+K)‐ATPase as an indicator of smolting for hatcheries.