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Effects of four factors on Penaeus monodon post-larvae cannibalism | ||
| Iranian Journal of Fisheries Sciences | ||
| دوره 20، شماره 2، خرداد 2021، صفحه 547-557 اصل مقاله (478.55 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22092/ijfs.2021.123901 | ||
| چکیده | ||
| 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． | ||
| کلیدواژهها | ||
| Penaeus monodon؛ Cannibalism؛ Individual size؛ Post-larvae density؛ Food؛ Aeration | ||
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آمار تعداد مشاهده مقاله: 243 تعداد دریافت فایل اصل مقاله: 238 |
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