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Research Article: Effects of four factors on Penaeus monodon post-larvae cannibalism
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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 |
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Abstract: (2157 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．
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| Keywords: Penaeus monodon, Cannibalism, Individual size, Post-larvae density, Food, Aeration |
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Full-Text [PDF 479 kb]
(938 Downloads)
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Type of Study: Orginal research papers |
Subject:
aquaculture
Received: 2019/03/24 | Accepted: 2019/07/28 | Published: 2021/03/20
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