Synchronization of plasma sexual steroid concentrations and gonadal cycles in the sleeper, Eleotris acanthopoma

Hurng Yi Wang, Ching Feng Weng, Ming Chung Tu, Sin Che Lee

研究成果: 雜誌貢獻文章同行評審

17 引文 斯高帕斯(Scopus)

摘要

This paper describes the possible influences of environmental factors on the reproductive cycle of Eleotris acanthopoma in the Kaoping River estuary. For over 1 yr, gonad gross morphologies of the fish were examined by light microscopy, and plasma 17 beta-estradiol (E2) and testosterone (T) were analyzed by ELISA. In male E. acanthopoma, plasma T concentrations show a single seasonal cycle, with a peak in the summer (June to August) following the profile of the gonadosomatic index (GSI). In females, plasma E2 concentrations are significantly elevated during summer in accordance with the GSI. Low temperatures and a short photoperiod in the winter correlate well with the arrest of gonad maturation. Annual patterns of plasma E2 and T levels are similar to those of GSI changes existing in E. acanthopoma of either sex. These findings indicate that both temperature and photoperiod dominantly affect the reproductive cycle of E. acanthopoma.

原文英語
頁(從 - 到)14-20
頁數7
期刊Zoological Studies
40
發行號1
出版狀態已發佈 - 2001 一月 1

ASJC Scopus subject areas

  • Animal Science and Zoology

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