Abstract：
:17beta-estradiol (E2) is important for crustacean ovarian development. This study aims to investigate the distribution and change pattern of E2 in the ovary, hepatopancreas, thoracic ganglion and brain ganglion as well as Vg-mRNA expression level during ovarian development of Chinese mitten crab Eriocheir sinensis. Results showed that strongly positive signals of E2 were mainly distributed in follicle cells of ovaries for all developmental stages as well as oocyte cytoplasm of stages III to V ovaries. In hepatopancreas, the E2-positive signal was mainly detected in the cytoplasm and nucleus of fibrillar cells and the nucleus of resorptive cells, while the maximum fluorescence intensity was observed in stage III hepatopancreas. On the contrary, the E2 immunoreactivities in nervous tissues were relatively stable during ovarian development. Moreover, the changing pattern of E2 concentration was similar within hemolymph, ovary and hepatopancreas during the ovarian development. From stages I to III, the E2 content in three tissues increased significantly, then decreased gradually until stage V. As for the Vg-mRNA expression level in hepatopancreas and ovaries, an increasing trend was found in ovaries but no significant difference was detected during the period of ovarian stages III to V. Hepatopancreatic Vg-mRNA expression level increased significantly during stages I to IV and dramatically decreased at stage V. In conclusion, our study suggests that ovary, hepatopancreas, hemolymph and nervous tissues are the target organs of E2 in E. sinensis and E2 concentrations in different tissues are closely related to vitellogenesis in ovary and hepatopancreas during ovarian development.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Pan J,Liu M,Chen T,Cheng Y,Wu Xdoi
10.1007/s00441-018-2834-xsubject
Has Abstractpub_date
2018-08-01 00:00:00pages
509-520issue
2eissn
0302-766Xissn
1432-0878pii
10.1007/s00441-018-2834-xjournal_volume
373pub_type
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