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Submitted December 13, 2021
Published 2021-12-13

Artículos

Vol. 5 No. 2 (2021): Visión Antataura

Reproductive biology, sex ratio and muscle performance index in the coral reef bivalve Ctenoides scaber (Born, 1778)


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Citación:
DOI: ND

Published: 2021-12-13

How to Cite

Gómez H, J. A., Villaláz G., J., & Goti, I. (2021). Reproductive biology, sex ratio and muscle performance index in the coral reef bivalve Ctenoides scaber (Born, 1778). Visión Antataura, 5(2), 1–19. Retrieved from https://revistas.up.ac.pa/index.php/antataura/article/view/2519

Abstract

The bivalve Ctenoides scaber inhabits coral reefs in the Caribbean. 60 specimens were collected fortnightly during one year, in Ensenada Turpialito, Venezuela, and the reproductive condition was studied by histological sections of the gonads. The   gonadosomatic index ranged from 10% to 27% in females and from 4% to 17% in males, oocytes with 25.5 µm average diameter; the reproductive cycle resulted in two spawning peaks, from January to May and from June to November. The individuals changed sex from male to female at sizes greater than 50 mm, which avoided inbreeding, a protandric strategy that guaranteed the success of reproduction. The sex ratio was 1: 1.53 with significant difference (X2 = 5.5205 p <0.05). The muscle performance index decreased from January to September, unrelated to the gonadosomatic index (r = 0.1873 p <0.05).

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