The Effect of Low Temperature and Fasting during the Winter on Growth and Smoltification of Coho Salmon
作者： Donald A. Larsen , Brian R. Beckman , Walton W. Dickhoff
DOI: 10.1577/1548-8454(2001)063<0001:TEOLTA>2.0.CO;2
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摘要: Abstract This study examined the effect of winter feeding and fasting, under both warm (10°C) cold (2.5°C) water temperatures, on smoltification juvenile coho salmon Oncorhynchus kisutch. Treatments were warm–fed, warm–not fed, cold–fed, cold–not fed during (January–February) before in March–May. All groups maintained at 10°C period. The following variables measured: Fork length, weight, condition factor, smolt-associated appearance, whole-body lipid levels, gill Na+, K+-ATPase activity. Warm–fed fish grew continuously throughout larger than from other treatments. Fish showed little or no growth January February. Although factors decreased significantly winter-fasted levels smoltification-associated activities not different among groups. These dat...
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