Ovarian development pattern and vitellogenesis of ridgetail white prawn, Exopalaemon carinicauda

Wang Lin; Guo Qing; Levy TomChen TingWu Xugan

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Ovarian development pattern and vitellogenesis of ridgetail white prawn, Exopalaemon carinicauda

机译：Ovarian development pattern and vitellogenesis of ridgetail white prawn, Exopalaemon carinicauda

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摘要

The ridgetail white prawnExopalaemon carinicaudahas the potential to be used as a model organism in crustacean research because it has a transparent body, available draft genome, and short life cycle. However, their ovarian development pattern remains unclear under laboratory culture conditions. This study investigated the changes of ovarian external feature, ovarian histology, gonadosomatic index (GSI), and hepatosomatic index (HSI), as well as the expression and localization of vitellogenin in the ovary and the hepatopancreas during the first ovarian development cycle ofE. carinicaudaunder laboratory-reared condition. The results demonstrated that (1) the first ovarian development cycle ofE. carinicaudacould be divided into 5 different stages in which the ovary changes its color from white to yellow during the vitellogenesis process in parallel with increasing GSI. (2) After pubertal molt, most females reached ovarian stage II while the females reached stage V after premating molt. (3) During the ovarian development, GSI increased smoothly and HSI relatively stable during the period of stages I to IV, while GSI increased but HSI decreased significantly from stages IV to V. (4) In situ hybridization (ISH) revealed thatEcVgwas slightly expressed in the oocyte cytoplasm of previtellogenic oocytes. The positive signal was mainly detected in hepatopancreatic fibrillar cells, and a strong signal was found in the hepatopancreas at stage IV. Moreover, the expression level ofEcVg-mRNA in the hepatopancreas is stage-specific, and the hepatopancreas contributes majority of vitellin precursor protein to support the ovarian development ofE. carinicauda.

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《Cell and Tissue Research》 |2020年第2期|367-379|共13页
作者
Wang Lin; Guo Qing; Levy TomChen TingWu Xugan;
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作者单位

Shanghai Ocean Univ, Shanghai Collaborat Innovat Ctr Aquat Anim Genet, Shanghai 201306, Peoples R;

Ben Gurion Univ Negev, Dept Life Sci, IL-84105 Beer Sheva, Israel;

Chinese Acad Sci, Key Lab Trop Marine Bioresources & Ecol, South China Sea Inst Oceanol, Guangzhou;

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正文语种英语
中图分类细胞生物学;
关键词
Ovarian development; Crustacean; Vitellogenesis site; Closed life cycle; In situ hybridization;

Ovarian development pattern and vitellogenesis of ridgetail white prawn, Exopalaemon carinicauda

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