Title of article :
Effects of four factors on Penaeus monodon post-larvae cannibalism
Author/Authors :
Jiang, S. Shenzhen Base of South China Sea Fisheries Research Institute - Chinese Academy of Fishery Sciences - Shenzhen, P.R. China , Zhou, F.L. Shenzhen Base of South China Sea Fisheries Research Institute - Chinese Academy of Fishery Sciences - Shenzhen, P.R. China , Zeng, X.Y. Key Lab of South China Sea Fishery Resources Utilization - Ministry of Agriculture - South China Sea Fisheries Research Institute - Chinese Academy of Fishery Sciences - Guangdong，China , Yang, Q.B. Key Lab of South China Sea Fishery Resources Utilization - Ministry of Agriculture - South China Sea Fisheries Research Institute - Chinese Academy of Fishery Sciences - Guangdong，China , Huang, J.H. Key Lab of South China Sea Fishery Resources Utilization - Ministry of Agriculture - South China Sea Fisheries Research Institute - Chinese Academy of Fishery Sciences - Guangdong，China , Yang, L.S. Key Lab of South China Sea Fishery Resources Utilization - Ministry of Agriculture - South China Sea Fisheries Research Institute - Chinese Academy of Fishery Sciences - Guangdong，China , Jiang, S.G. Key Lab of South China Sea Fishery Resources Utilization - Ministry of Agriculture - South China Sea Fisheries Research Institute - Chinese Academy of Fishery Sciences - Guangdong，China
Abstract :
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 :
Aeration , Food , Penaeus monodon , Cannibalism , Individual size , Post-larvae density
Journal title :
Iranian Journal of Fisheries Sciences
