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Effect of elevated temperature on estrogenic induction of vitellogenesis and zonagenesis in juvenile Atlantic salmon (Salmo salar)
Citation
Anderson, K and King, H and Pankhurst, N and Ruff, N and Pankhurst, P and Elizur, A, Effect of elevated temperature on estrogenic induction of vitellogenesis and zonagenesis in juvenile Atlantic salmon (Salmo salar), Marine and Freshwater Behaviour and Physiology, 45, (1) pp. 1-15. ISSN 1023-6244 (2012) [Refereed Article]
Copyright Statement
Copyright 2012 Taylor & Francis
DOI: doi:10.1080/10236244.2012.670472
Abstract
Fertility and embryo survival rates are often low in eggs from thermally challenged Tasmanian Atlantic salmon, partly due to a reduction in plasma 17β-estradiol (E2) levels. We used juvenile Atlantic salmon to assess whether hepatic tissue remains responsive to stimulation by E2 at the higher temperatures sometimes encountered by Tasmanian salmon during summer. E2 administration stimulated vitellogenin (Vtg) and estrogen receptor alpha transcription at 14°C and 22°C, although induction of Vtg occurred more rapidly at 22°C. Consequently, plasma Vtg levels increased and reached a plateau more quickly at 22°C. Zona pellucida (Zp) B and C transcription was significantly lower in E2-treated fish at 22°C relative to 14°C. This shows that the Vtg gene is E2-responsive at high temperature unlike Zp B and C genes that displayed traits of thermal inhibition. Therefore, estrogen replacement therapy in adult salmon may offset some, but not all thermal inhibition of reproductive function.
Item Details
Item Type: | Refereed Article |
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Keywords: | salmon, Salmo salar, temperature, vitellogenin, zona pellucida, estrogen therapy |
Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Fisheries sciences |
Research Field: | Aquaculture |
Objective Division: | Animal Production and Animal Primary Products |
Objective Group: | Fisheries - aquaculture |
Objective Field: | Aquaculture fin fish (excl. tuna) |
UTAS Author: | Anderson, K (Dr Kelli Anderson) |
ID Code: | 127617 |
Year Published: | 2012 |
Web of Science® Times Cited: | 7 |
Deposited By: | Fisheries and Aquaculture |
Deposited On: | 2018-08-06 |
Last Modified: | 2018-09-05 |
Downloads: | 0 |
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