Sex differentiation and early gonadogenesis in Sebastes inermis Cuvier SCOPUS KCI

Title
Sex differentiation and early gonadogenesis in Sebastes inermis Cuvier
Author(s)
Choi, H.J.; Oh, S.-Y.; Myoung, J.-G.; Kim, J.-M.; Hur, J.W.; Park, M.-O.; Park, I.-S.
KIOST Author(s)
Choi, Hee Jung(최희정)Oh, Sung Yong(오승용)Myoung, Jung Goo(명정구)
Publication Year
2008
Abstract
Early gonadal development and sexual differentiation of dark-banded rockfish (Sebastes inermis Cuvier) were followed from parturition to 400 days post parturition (dpp). During this period, average total length (TL) increased from 0.57 to 13.18 cm. Primordial germ cells (PGCs) were first detected at 0.68 cm TL (10 dpp). When fish reached 1.52 cm TL (50 dpp), initial stages of ovarian differentiation were identified by the presence of PGCs containing condensed chromatin and their transformation into meiotic oocytes. At 10.23 cm TL (300 dpp), the ovaries gradually developed into oocytes in the primary yolk stages. Ovary growth was rapid after sex differentiation, but testis tissue continued to multiply without growing until fish reached 6.97 cm TL (200 dpp), after which the production of spermatocytes, spermatogonia, and cyst cells was apparent. Histological analysis of gonadal structure suggested a gonochoristic sexual development pathway. Our analysis of the sex ratio at 400 dpp showed a significantly higher proportion of males.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4557
DOI
10.4217/OPR.2008.30.4.401
Bibliographic Citation
Ocean and Polar Research, v.30, no.4, pp.401 - 406, 2008
Publisher
Korea Ocean Research and Development Institute
Subject
detection method; developmental stage; fish; germ cell; growth; histology; identification method; sex ratio; sex-related difference; Sebastes inermis
Keywords
Dark-banded rockfish; Gonadogenesis; Sex differentiation
Type
Article
Language
English
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Fish ecology,Fish taxonomy,Fish stock enhancement,어류생태,어류분류,어류자원증식

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