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Effect of thermal challenge on the expression of genes involved in ovarian steroidogenesis in Tasmanian Atlantic salmon (Salmo salar)

Citation

Anderson, K and Pankhurst, N and King, H and Elizur, A, Effect of thermal challenge on the expression of genes involved in ovarian steroidogenesis in Tasmanian Atlantic salmon (Salmo salar), Aquaculture, 479 pp. 474-478. ISSN 0044-8486 (2017) [Refereed Article]

Copyright Statement

Copyright 2017 Elsevier B.V.

DOI: doi:10.1016/j.aquaculture.2017.06.012

Abstract

Thermal challenge typically results in lowered plasma 17β-estradiol and 17,20β-dihydroxy-4-pregnen-3-one, and is associated with poor reproductive performance in commercially important female Atlantic salmon. The aim of the present study was to gauge the thermal sensitivity of genes crucial to ovarian steroidogenesis, and determine how they fit into this endocrine response in reproductive fish of different ages. Exposure to higherthan- normal temperature (22 vs 14 C) did not significantly impact the expression of forkhead transcription factor or follicle stimulating hormone receptor (fshr) during peak vitellogenesis, although, fshr was lower in thermally challenged maiden fish in the lead up to final oocyte maturation. For the first time, we have demonstrated the temperature-dependent down-regulation of ovarian steroidogenic acute regulatory protein and 3β-hydroxysteroid dehydrogenase in the month preceding ovulation, and now have a better understanding of the mechanism underlying the inability of thermally exposed fish to recover after temperature reduction prior to final oocyte maturation.

Item Details

Item Type:Refereed Article
Keywords:Atlantic salmon, temperature, reproduction, gene expression, ovarian steroidogenesis
Research Division:Agricultural and Veterinary 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)
Author:Anderson, K (Dr Kelli Anderson)
ID Code:127612
Year Published:2017
Web of Science® Times Cited:2
Deposited By:Fisheries and Aquaculture
Deposited On:2018-08-06
Last Modified:2018-09-06
Downloads:0

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