Gonadal development and nutritional composition of adult Eriocheir sinensis from Xishuangbanna
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Received:April 28, 2018  Revised:December 19, 2018
DOI:10.12024/jsou.20180402302
Key Words: Xishuangbanna  Eriocheir sinensis  puberty molting  gonadal development  nutritional composition
Author NameAffiliationE-mail
WANG Shihui Fish Nutrition and Environmental Ecology Research Center, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
Heilongjiang Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, Heilongjiang, China 
 
LONG Xiaowen Fish Nutrition and Environmental Ecology Research Center, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China  
ZU Lu Fish Nutrition and Environmental Ecology Research Center, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China  
WU Xugan Fish Nutrition and Environmental Ecology Research Center, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China 
 
CHENG Yongxu Fish Nutrition and Environmental Ecology Research Center, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China 
yxcheng@shou.edu.cn 
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Abstract:
      This study was designed to investigate puberty molting, gonadosomatic index (GSI), hepatosomatic index (HSI), meat yield (MY), total edible yield (TEY),condition factor (CF), and their nutritional composition was compared for the three edible parts (gonad, hepatopancreas and muscle) of pond-cultured adult Eriocheir sinensis from Xishuangbanna. The results are shown as follows:(1) female adults had accomplished puberty molting in August, while only 53.85% in male adults. In September,all adults completed puberty molting. From August to November, the gonadal index of both adults showed a significant upward trend, and the main increase occurred in August-September, while the HSI decreased(P<0.05). (2) HSI, GSI and TEY were slightly higher in female adults than male ones, while, male adults had higher MY, CF than female ones. (3) The redness (a*) of hepatopancreas was slightly higher in male adults than female ones. However, no significant differences were found between the lightness (L*) and yellowness (b*). (4) The protein and lipid contents in the gonad were significantly higher in female adults than male ones (P<0.05), but protein and ash contents in the hepatopancreas were higher in female ones (P<0.05). Compared with female adults, only protein content was slightly different in the muscle (P<0.05). In conclusion, the puberty molting of the male and female adults in pond culture crabs from Xishuangbanna mainly completed in July-August and August-September, respectively. The total edible yield rates of adult crabs were 42.91% and 40.26%, respectively. Thus, the edible tissue was of high nutritional value in this area.