+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Plasma cortisol and sex steroid levels in Great Lakes coho salmon (Oncorhynchus kisutch Walbaum) in relation to fecundity and egg survival



Plasma cortisol and sex steroid levels in Great Lakes coho salmon (Oncorhynchus kisutch Walbaum) in relation to fecundity and egg survival



Comparative Biochemistry and Physiology. A, Comparative Physiology 80(1): 61-68



Plasma 11-ketotestosterone and cortisol levels in spawning male and female coho salmon (Oncorhynchus kisutch Walbaum) collected from a Lake Erie (Pennsylvania) stock were significantly lower (P less than 0.01) than in stocks of coho salmon at a comparable stage of sexual development collected from Lakes Ontario (two stocks) or Michigan. Plasma testosterone levels in female coho salmon from Lake Erie were significantly lower (P less than 0.01) than in females from Lake Ontario or Lake Michigan stocks. There were no significant differences in plasma testosterone levels in the males, or 17 beta-estradiol levels in male or female salmon of the four stocks sampled from the three study lakes. This apparent dysfunction in androgen and cortisol secretion in the Lake Erie stock is correlated with and may account for the low fecundity and poor expression of secondary sexual characteristics in that stock.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 021561039

Download citation: RISBibTeXText

PMID: 2858293

DOI: 10.1016/0300-9629(85)90679-6


Related references

Plasma cortisol and sex steroid levels in great lakes usa canada coho salmon oncorhynchus kisutch in relation to fecundity and egg survival. Comparative Biochemistry & Physiology A 80(1): 61-68, 1985

Comparative fecundity and egg survival of coho salmon (Oncorhynchus kisutch Walbaum) from Lakes Ontario, Erie and Michigan. Canadian Journal of Zoology, 635: 1096-1100, 1985

Bioaccumulation of organochlorines by yearling coho salmon (Oncorhynchus kisutch walbaum) fed diets containing Great Lakes' coho salmon, and the pathophysiological responses of the recipients. Comparative Biochemistry and Physiology. C: Comparative Pharmacology 72(1): 91-99, 1982

Cortisol induced changes in plasma glucose protein and thyroid hormone levels and liver glycogen content of coho salmon oncorhynchus kisutch walbaum. Canadian Journal of Zoology 67(11): 2746-2750, 1989

Fecundity of coho salmon oncorhynchus kisutch from the great lakes and a comparison with ocean salmon. Journal of the Fisheries Research Board of Canada 33(5): 1150-1155, 1976

Studies on the saprolegniasis in coho salmon oncorhynchus kisutch walbaum vi. pathogenicity of saprolegnia isolated from cultured coho salmon oncorhynchus kisutch walbaum on salmonids. Bulletin of the Nippon Veterinary and Zootechnical College (38): 44-51, 1989

Comparative fecundity and egg survival in two stocks of goitred coho salmon (Oncorhynchus kisutch Walbaum) from Lake Erie. Canadian Journal of Zoology, 6511: 2780-2785, 1987

Thyroid dysfunction in Great Lakes coho salmon, Oncorhynchus kisutch (Walbaum): seasonal and interlake differences in serum T3 uptake and serum total and free T4 and T3 levels. Journal of fish diseases 4(5): 413-423, 1981

Thyroid function, pituitary structure and serum lipids in Great Lakes coho salmon, Oncorhynchus kisutch Walbaum, 'jacks' compared with sexually immature spirng salmon. Journal of Fish Biology, 186: 643-653, 1981

Toxic effects in C57B1/6 and DBA/2 mice following consumption of halogenated aromatic hydrocarbon-contaminated Great Lakes coho salmon (Oncorhynchus kisutch Walbaum). Environmental Health Perspectives 75: 153-158, 1987

Comparative fecundity and egg survival of coho salmon oncorhynchus kisutch from lakes ontario erie and michigan usa canada. Canadian Journal of Zoology 63(5): 1096-1100, 1985

Survival of smaller sport caught chinook, Oncorhynchus tshawytscha (Walbaum), and coho, Oncorhynchus kisutch (Walbaum), salmon from Lake Michigan and its management implications. Fisheries Management and Ecology. March; 21: 11-16, 1995

Toxic effects of c57bl 6 and dba 2 mice following consumption of halogenated aromatic hydrocarbon contaminated great lakes usa and canada coho salmon oncorhynchus kisutch walbaum. Environmental Health Perspectives 75: 153-158, 1987