Reproductive cycle of sea urchin Echinometra vanbrunti (Echinodermata: Echinoidea) from the Gulf of California

Ana Gloria Villalba Villalba, Lerma Hanaiy Chan Chan, Irlanda Lagarda Diaz, Naomi Yerith Reyes Jiménez, Christian Minjarez Osorio, Reina Castro Longoria, Amir Maldonado Arce*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Echinometra vanbrunti is an echinoid found in abundance in the eastern Pacific, including the Gulf of California in Mexico. The aim of this study is to document its annual reproductive cycle from monthly sampling. Growth, condition and gonadosomatic index (GSI) were determined from morphometric data. Additionally, sex ratio and morphology of sea urchin gonads and their gametes were analysed by histology and microscopy. The growth pattern of E. vanbrunti was allometric. The monthly variations of GSI are explained by gonad condition and the gametogenesis cycle. An annual reproductive cycle was observed with higher GSI from July–September and the highest percentage of females and males in the mature stage in the same period. Gonad histology agreed with this single gametogenic cycle per year, and gametogenesis in males and females being highly synchronized in this species. Spawning period started in July and ended in November for both sexes.

Original languageEnglish
Pages (from-to)838-852
Number of pages15
JournalMarine Biology Research
Issue number9-10
StatePublished - 2021

Bibliographical note

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© 2022 Informa UK Limited, trading as Taylor & Francis Group.


  • Allometry
  • gametes
  • gonadosomatic index
  • gonads
  • nutritive phagocytes
  • sea urchin


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