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Reducing cannibalism of narrow clawed crayfish Astacus leptodactylus Eschscholtz 1823 through management of photoperiod and stocking density

Citation

Farhadi, A and Gardner, C and Kochanian, P, Reducing cannibalism of narrow clawed crayfish Astacus leptodactylus Eschscholtz 1823 through management of photoperiod and stocking density, Asian Fisheries Science, 27, (4) pp. 286-296. ISSN 0116-6514 (2014) [Refereed Article]


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Copyright Statement

Copyright 2014 Asian Fisheries Society

Official URL: http://www.asianfisheriessociety.org/publication/a...

Abstract

In crayfish hatcheries, one of the main factors affecting reproduction operation is survival and cannibalism of brood stock. One of the main problems for expansion of Astacus leptodactylus Eschscholtz 1823 production is high mortality and cannibalism of broodstock during the reproduction operation. The effect of photoperiod and stocking density on cannibalism, moulting and survival of A. leptodactylus was examined in the context of broodstock husbandry. Cannibalism was lowest and survival highest when crayfish were housed at low density (10.m-2) and with longer photoperiod. The longest photoperiod, 18 h light (L): 6 h dark (D) conditions resulted in high survival with minor cannibalism. Longest photoperiod also had the undesirable outcome of lower frequency of moulting, suggesting possible impacts on growth.

Item Details

Item Type:Refereed Article
Keywords:crayfish, cannibalism, Astacus
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 Crustaceans (excl. Rock Lobster and Prawns)
Author:Gardner, C (Professor Caleb Gardner)
ID Code:97611
Year Published:2014
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2015-01-05
Last Modified:2015-04-23
Downloads:0

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