TY - JOUR
T1 - Reproductive cycle of sea urchin Echinometra vanbrunti (Echinodermata: Echinoidea) from the Gulf of California
AU - Villalba Villalba, Ana Gloria
AU - Chan Chan, Lerma Hanaiy
AU - Lagarda Diaz, Irlanda
AU - Reyes Jiménez, Naomi Yerith
AU - Minjarez Osorio, Christian
AU - Castro Longoria, Reina
AU - Maldonado Arce, Amir
N1 - Publisher Copyright:
© 2022 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - Allometry
KW - gametes
KW - gonadosomatic index
KW - gonads
KW - nutritive phagocytes
KW - sea urchin
UR - http://www.scopus.com/inward/record.url?scp=85125894481&partnerID=8YFLogxK
U2 - 10.1080/17451000.2022.2029901
DO - 10.1080/17451000.2022.2029901
M3 - Artículo
AN - SCOPUS:85125894481
SN - 1745-1000
VL - 17
SP - 838
EP - 852
JO - Marine Biology Research
JF - Marine Biology Research
IS - 9-10
ER -