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Research Article: Effects of four factors on Penaeus monodon post-larvae cannibalism
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چکیده: (2141 مشاهده) |
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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متن کامل [PDF 479 kb]
(933 دریافت)
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نوع مطالعه: كاربردي |
موضوع مقاله:
aquaculture
دریافت: 1398/1/4 | پذیرش: 1398/5/6 | انتشار: 1399/12/30
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