Cannibalism of decapod crustaceans and implications for their aquaculture: a review of its prevalence, influencing factors, and mitigating methods

Romano, Nicholas, and Zeng, Chaoshu (2017) Cannibalism of decapod crustaceans and implications for their aquaculture: a review of its prevalence, influencing factors, and mitigating methods. Reviews in Fisheries Science & Aquaculture, 25 (1). pp. 42-69.

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Abstract

The prevalence of cannibalistic behavior among many commercially important decapod crustaceans is one of the biggest limiting factors to their culture productivity and profitability in aquaculture. Various biotic and abiotic factors influence cannibalism including stocking densities, molt status, size heterogeneity, photoperiod, light intensity, and availability to refuge and food; however, their relative efficacies are often species or stage dependent. For instance, although generally penaeid shrimp are seldom cannibalistic when food and space are sufficient, this does not apply to many crab, lobster, and some crayfish species. This review will first discuss the cannibalistic prevalence among commercially important crustacean species followed by a brief review on the current knowledge regarding chemical cues that trigger cannibalism. The main focus will then be on various mitigating methods to improve survival for each of the three main aquaculture phases, that is hatchery, nursery, and grow-out, respectively. Throughout, areas in which one method may have applications to other species or life stages will be highlighted. A final section discusses possible future directions that include individually farming high-value crustaceans and the potential to manipulate hormones associated with aggression. It is hoped that such discussions as well as identifying knowledge gaps will prompt research to help expand and diversify the crustacean farming industry.

Item ID: 46667
Item Type: Article (Refereed Research - C1)
Keywords: agonistic behavior, neurotransmitters, individual culture, crabs, crayfish, lobsters
ISSN: 2330-8257
Date Deposited: 14 Dec 2016 07:41
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070401 Aquaculture @ 100%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830101 Aquaculture Crustaceans (excl. Rock Lobster and Prawns) @ 70%
83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830106 Aquaculture Rock Lobster @ 20%
83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830105 Aquaculture Prawns @ 10%
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