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Ovarian growth and plasma sex steroid and vitellogenin profiles during vitellogenesis in Tasmanian female Atlantic salmon (Salmo salar)

Citation

King, HR and Pankhurst, NW, Ovarian growth and plasma sex steroid and vitellogenin profiles during vitellogenesis in Tasmanian female Atlantic salmon (Salmo salar), Aquaculture, 219, (1-4) pp. 797-813. ISSN 0044-8486 (2003) [Refereed Article]

DOI: doi:10.1016/S0044-8486(02)00647-6

Abstract

In order to provide detailed information on the reproductive development of female Atlantic salmon (Salmo salar) in Tasmania, Australia, fish were sampled from sea cages during the main period of vitellogenesis over the austral summer and autumn (October-March). Plasma levels of the gonadal steroids 17β-estradiol (E2) and testosterone (T), and vitellogenin (Vtg), as well as a range of indices of ovarian development, were measured. Somatic growth and gonadal development were consistent with the stock's growth and development as an austral autumn spawning stock. Mean body weight increased from 3.4 to 5.4 kg and gonadosomatic index (GSI) increased from 0.5% to 17%. Plasma levels of E2 and T increased from ∼ 3 to ∼ 20 ng ml-1 and plasma levels of Vtg increased from ∼ 2.5 to greater than 35 mg ml-1. However, increases in GSI, oocyte volume, etc., tended to occur later than expected on the basis of Northern hemisphere data and plasma levels of E2 and T did not increase significantly until the last month of sampling. Plasma levels of Vtg were also static (∼ 10 mg ml-1) during mid-summer (December-January). Together these observations indicate possible temperature-related impairment of reproductive development during summer. © 2003 Elsevier Science B.V. All rights reserved.

Item Details

Item Type:Refereed Article
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:Fisheries - Aquaculture not elsewhere classified
Author:Pankhurst, NW (Professor Ned Pankhurst)
ID Code:27370
Year Published:2003
Web of Science® Times Cited:34
Deposited By:TAFI - Aquaculture
Deposited On:2003-08-01
Last Modified:2011-09-20
Downloads:0

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