A study on the ovarian development of <i>Portunus trituberculatus</i> in East China Sea during the first reproductive cycle

WU Xu-gan; YAO Gui-gui; YANG Xiao-zhen; CHENG Yong-xu; WANG Chun-lin

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Article Navigation > Haiyang Xuebao > 2007 > 29(4): 120-127

WU Xu-gan, YAO Gui-gui, YANG Xiao-zhen, CHENG Yong-xu, WANG Chun-lin. A study on the ovarian development of Portunus trituberculatus in East China Sea during the first reproductive cycle[J]. Haiyang Xuebao, 2007, 29(4): 120-127.

Citation:

WU Xu-gan, YAO Gui-gui, YANG Xiao-zhen, CHENG Yong-xu, WANG Chun-lin. A study on the ovarian development of Portunus trituberculatus in East China Sea during the first reproductive cycle[J]. Haiyang Xuebao, 2007, 29(4): 120-127.

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A study on the ovarian development of Portunus trituberculatus in East China Sea during the first reproductive cycle

1.
Key Laboratory of Aquatic Genetic Resources and Aquaculture Ecosystem Certificated by the Ministry of Agriculture, Shanghai Fisheries University, Shanghai 200090, China
2.
College of Life Science and Biotechnology, Ningbo University, Ningbo 315211, China

Received Date: 2006-12-08
Rev Recd Date: 2007-02-16

Abstract

Abstract

By the continuous sampling in Zhoushan sea area from July 2004 to April 2005,the study as conducted to invest igate the change of gonadosomatic index(GSI),hepatosomatic index(HSI),external features of ovary(size,morphology,color,etc),ovarian histology and its stages during the first reproductive cycle of Portunus trituberculatus.The results indicated that,the reproductive molt of Portunus trituber culatus occurs from September to October,while it spawns from March to April.During the ovarian development,the GSI increases significantly,while the HSI rises slightly,then declines gradually.The negative correlation could be found between GSI and HSI during the period.Based on GSI,HSI,external features of ovary,and histological configuration,the process of ovarian development could be divided into six stages,Ⅰ the ovary is ribbonlike and transparent,the main cells in the ovary are oo gonia(oo)and previt ellogenic oocyte(PR)before reproductive molt;Ⅱ the ovary is milk white,the main cells in the ovary are endogenous vitellogeic oocyte(EN)and PR;Ⅲ the ovary is buff and orange,the main cell type in the ovary is exogenous vitellogenic oocyte(EX);Ⅳ the ovary is deep orange,the main cell types are EX and nearly-mature oocyte(NO)in the ovary;Ⅴ the ovary is ripe,the main cell type is mature oocy te(MO); Ⅵ the crab has spawned,the ovary is light orange,the basal laminas(BL)and follicular cells(FC)could be found in the ovary.
- Portunus trituberculatus,
- ovarian development,
- gonadosomatic index(GSI),
- oocyte

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References(24)

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