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Research Article: Effects of four factors on Penaeus monodon post-larvae cannibalism
S. Jiang, F.L. Zhou, X.Y. Zeng, Q.B. Yang, J.H. Huang, L.S. Yang, S.G. Jiang *
South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , 515641795@qq.com
Abstract:   (131 Views)
In order to study the cannibalism behavior of Penaeus monodon post-larvae, the effects of four internal and external factors, such as individual size, post-larvae density (50, 80, 110, 140, 170 ind/L), food abundance and aeration, on the cannibalism rate were analyzed. The results showed that the cannibalism rate was significantly affected by individual size, post-larvae density and food abundance. When post-larval density increased from 50 ind / L to 110 ind / L,the average daily cannibalism rate increased by 358.07%. When larval density was more than 110 ind/L,cannibalism rate slightly increased. The average daily cannibalism rate decreased by 69.81% in 20 ind/mL food group than that of no-food group. The mix of individuals in different sizes could increase cannibalism rate significantly. Sufficient aeration could decrease cannibalism rate. The results indicated that insufficient food was a main reason to cause cannibalism in Penaeus monodon post-larvae. High stocking density and differences of individual size could induce and stimulate the cannibalism.
 
Keywords: Penaeus monodon, Cannibalism, Individual size, Post-larvae density, Food, Aeration
Full-Text [PDF 479 kb]   (37 Downloads)    
Type of Study: Orginal research papers | Subject: aquaculture
Received: 2019/03/24 | Accepted: 2019/07/28 | Published: 2021/03/20
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Jiang S, Zhou F, Zeng X, Yang Q, Huang J, Yang L et al . Research Article: Effects of four factors on Penaeus monodon post-larvae cannibalism. IJFS. 2021; 20 (2) :547-557
URL: http://jifro.ir/article-1-3863-en.html


Volume 20, Issue 2 (2021) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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