Gonadal development and nutritional composition of adult Eriocheir sinensis from Xishuangbanna
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S966.16

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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.

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王世会,龙晓文,祖露,吴旭干,成永旭.西双版纳河蟹性腺发育规律和营养品质[J].上海海洋大学学报,2019,28(4):483-490.
WANG Shihui, LONG Xiaowen, ZU Lu, WU Xugan, CHENG Yongxu. Gonadal development and nutritional composition of adult Eriocheir sinensis from Xishuangbanna[J]. Journal of Shanghai Ocean University,2019,28(4):483-490.

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History
  • Received:April 28,2018
  • Revised:December 19,2018
  • Adopted:January 08,2019
  • Online: July 25,2019
  • Published:
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