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The Effect of Food Deprivation on Foraging Behavior and Digestive and Metabolic Capacities of the Chinese Mitten Crab, Eriocheir sinensis

文献类型： 外文期刊

作者： Long, Qiaolin 1 ; Liu, Jian 1 ; Sun, Yunfei 1 ; Yang, Zhigang 1 ; Tang, Boping 5 ; Cheng, Yongxu 1 ;

作者机构： 1.Shanghai Ocean Univ, Key Lab Freshwater Aquat Genet Resources, Minist Agr & Rural Affairs, Shanghai 201306, Peoples R China

2.Shanghai Ocean Univ, Shanghai Engn Res Ctr Aquaculture, Shanghai 201306, Peoples R China

3.Shanghai Ocean Univ, Natl Demonstrat Ctr Expt Fisheries Sci Educ, Shanghai 201306, Peoples R China

4.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Integrated Rice Fish Farming, Minist Agr & Rural Affairs, Wuxi 214081, Peoples R China

5.Yancheng Teachers Univ, Sch Wetland, Yancheng 224002, Peoples R China

关键词： food deprivation; Eriocheir sinensis; Bellamya quadrata; foraging behavior; physiology

期刊名称：FISHES （ 影响因子：2.3； 五年影响因子：2.4 ）

ISSN：

年卷期： 2023 年 8 卷 1 期

页码：

收录情况： SCI

摘要： Food deprivation is a common stress in crustaceans that can affect their behavior and physiology. In this study, a video recording analysis system was used to compare the predation rate and behavior of the Chinese mitten crab, Eriocheir sinensis, foraging on the freshwater snail, Bellamya quadrata, under different degrees of food deprivation. The activities of lactate dehydrogenase, alpha-amylase, pepsin, and lipase in the hepatopancreas of crabs were determined after food deprivation for 0, 3, 9, and 15 days. The results showed that the predation and encounter rates of E. sinensis increased and then decreased with an increase in food deprivation time. The proportion of stationary time of E. sinensis initially decreased and then increased, whereas the proportion of searching and handling time increased initially and then decreased. There was a significant difference in the probability of capture upon encountering; however, food deprivation did not significantly affect the probability of consumption upon capture. Under food deprivation, the proportion of E. sinensis crushing tactics after nine-day food deprivation was significantly lower than that in the first nine days. Lactate dehydrogenase activity in the E. sinensis hepatopancreas after food deprivation was significantly higher than that in those not subjected to food deprivation, and the activities of alpha-amylase and pepsin in the hepatopancreas were consistent with the predation rate trend, showing an initial increase followed by a decrease. In conclusion, different degrees of food deprivation significantly affected the predation cycle of E. sinensis on B. quadrata. These results lay a solid foundation for further studies on the foraging behavioral ecology of E. sinensis and provide important information for improving E. sinensis production.

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