The Effects of Starvation and Subsequent Feeding on Survival and Growth of Fulton Channel Sockeye Salmon Fry (Oncorhynchus nerka)
作者:
H. T. Bilton,
G. L. Robins,
期刊:
Journal of the Fisheries Board of Canada
(NRC Available online 1973)
卷期:
Volume 30,
issue 1
页码: 1-5
ISSN:0706-652X
年代: 1973
DOI:10.1139/f73-001
出版商: NRC Research Press
数据来源: NRC
摘要:
In the laboratory 8 groups of Fulton River channel fry were starved for periods ranging from 1 to 7 weeks, then offered food ad libitum for 8 weeks. Fry withstood up to 4-weeks starvation with less than 10% mortality; beyond this point mortality increased sharply to 90% at 7-weeks starvation. At 5-weeks starvation both fry length and weight decreased significantly. Mortality continued when fish were offered food ad libitum after being starved. Among fish starved for 1 and 2 weeks, mortalities continued to be low, 0 and 6.6%, respectively; but, among fish starved from 3 to 5 weeks, mortalities rose considerably, ranging from 42 to 99%.
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