ArticleJournal of fish biology2026
Reproductive biology of the starry grouper, Epinephelus labriformis (Perciformes: Serranidae): Gonadal development, sex change and sexual pattern.
Article in Journal of fish biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
The reproductive biology of the starry grouper, Epinephelus labriformis, in Mazatlan Bay, Mexico, was studied through histological analysis of the gonads. A total of 527 fish were examined through weekly sampling from March 2017 to March 2018. In this species, the gonads are bilobed and connected to a common gonoduct. E. labriformis exhibits monandric protogynous hermaphroditism, with a female-to-male proportion of 1.5 females:1 male in fully mature animals. In females, six ovarian phases were identified, and the oogenic cycle was analysed in 314 females, classified as asynchronous. The gonadosomatic index increased from 0.13 in the immature phase to 3.35 at maturity, declining to 1.16 post-spawning. Transforming testes (n = 95) revealed four stages of sex change, during which ovarian tissue is progressively replaced by testicular tissue. Males and transforming individuals appeared in larger size classes, with no females recorded beyond 27.5 cm total length (L
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