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Out -of-season gamete production in Strongylocentrotus droebachiensis : Photoperiod and temperature manipulation
Citation
Kirchhoff, NT and Eddy, S and Brown, NP, Out -of-season gamete production in Strongylocentrotus droebachiensis : Photoperiod and temperature manipulation, Aquaculture: An International Journal Devoted to Fundamental Aquatic Food Resources, 303 pp. 77-85. ISSN 0044-8486 (2010) [Refereed Article]
DOI: doi:10.1016/j.aquaculture.2010.03.003
Abstract
The natural spawning of Strongylocentrotus droebachiensis is limited to late winter into early spring. In order to reduce the cost of urchin production, out-of-season gamete production is necessary. This study attempted to condition broodstock for out-of-season gamete production through the use of two different photoperiod and temperature regimes: a Constant Spring and an Advanced year; hypothesized to induce maturation through suspension or advancement of the gametogenic cycle, respectively. Viable gametes were successfully produced out-of-season with fertilization and hatch rates equal to or surpassing the levels recorded for wild urchin's in-season. In addition, specific fecundity was significantly higher in out-of-season conditioned urchins compared to the in-season wild urchins. Histological techniques proved that gametogenesis was both suspended and advanced through manipulation of the photoperiod and temperature. In addition, several important observations were made regarding reproductive physiology in the green sea urchin, the implications of which are important to the economic development of the green sea urchin aquaculture industry and management of wild stocks. © 2010 Elsevier B.V. All rights reserved.
Item Details
Item Type: | Refereed Article |
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Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Animal production |
Research Field: | Animal reproduction and breeding |
Objective Division: | Animal Production and Animal Primary Products |
Objective Group: | Fisheries - aquaculture |
Objective Field: | Aquaculture crustaceans (excl. rock lobster and prawns) |
UTAS Author: | Kirchhoff, NT (Ms Nicole Kirchhoff) |
ID Code: | 81217 |
Year Published: | 2010 |
Web of Science® Times Cited: | 14 |
Deposited By: | NC Marine Conservation and Resource Sustainability |
Deposited On: | 2012-11-27 |
Last Modified: | 2012-11-27 |
Downloads: | 0 |
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