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

Kelli Anderson; Ned Pankhurst; Harry King; Abigail Elizur

doi:10.1016/j.aquaculture.2017.06.012

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

Journal article

Open access

Peer reviewed

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

Kelli Anderson, Ned Pankhurst, Harry King and Abigail Elizur

Aquaculture, Vol.479, pp.474-478

2017

DOI: https://doi.org/10.1016/j.aquaculture.2017.06.012

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Abstract

Atlantic salmon

temperature

reproduction

gene expression

ovarian steroidogenesis

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 higher-than-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.

Details

Title: Effect of thermal challenge on the expression of genes involved in ovarian steroidogenesis in Tasmanian Atlantic salmon (Salmo salar)
Authors: Kelli Anderson (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Ned Pankhurst (Author) - Griffith University
Harry King (Author) - Salmon Enterprises of Tasmania
Abigail Elizur (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Aquaculture, Vol.479, pp.474-478
Publisher: Elsevier BV
Date published: 2017
DOI: 10.1016/j.aquaculture.2017.06.012
ISSN: 0044-8486
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; Centre for Bioinnovation
Language: English
Record Identifier: 99451014002621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Fisheries; Marine & Freshwater Biology

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