Chinese Science Bulletin

, Volume 43, Issue 3, pp 177–184 | Cite as

Position in the evolution of reproductive endocrine of amphioxus,Branchiostoma belcheri

  • Yongqiang Fang


This review summarizes the recent discoveries of many authors who found that in amphioxus Hatschek’s pit is capable of synthesizing vertebrate gonadotropin-like substance, and that the content of gonadotropin-releasing hormone in the amphioxus’ body shows a positive correlation with the reproductive cycle, and that the sex steroid hormone exists in gonads. Exogenous hormones could promote gonadal development, maturation and reproductive activity in amphioxus. A possible implication might be that the reproductive activity in amphioxus is regulated by reproductive hormones like vertebrate, indicating the existence of primitive reproductive endocrine regulatory axis, brain vesicle-Hatschek’s pit-gonads axis, as compared with regulatory axis of vertebrate. It will provide a new line for establishing the position of reproductive endocrine evolution in lancelet.


amphioxus (lancelet) Hatschek’s pit reproductive endocrine evolution gonadotropin-releasing hormone gonadotropin sex steriod hormone 


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Copyright information

© Science in China Press 1998

Authors and Affiliations

  • Yongqiang Fang
    • 1
  1. 1.Third Institute of OceanographySOAXiamenChina

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