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Content loaded within last 14 days Sex hormones in Strombus pugilis (Mollusca: Gastropoda) in different gonadal stages

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Sex hormones play an essential role in sexual differentiation, maintenance of sexual characteristics, gamete maturation, and mating behavior. However, very little is known about their dynamics in molluscs. We conducted a study on sex hormone (17β-estradiol, testosterone, and progesterone) concentrations in male and female Strombus pugilis to identify their variations at different gonadal stages. A total of 90 organisms (30 per month) were collected in February, September, and November 2016. The gonadal digestive gland complex of each specimen was dissected and divided into two sections. One section was set in alcoholic Bouin's fluid and processed with classic histological techniques; the second was macerated with 80% ethanol to extract steroids and analyzed by enzyme immunoassays. Histological section analysis was used to classify gonadal development into three stages: gametogenesis, mature, and undifferentiated. Mature females were observed in September. Testosterone and 17β-estradiol concentrations in both sexes were highest in the mature stage. In S. pugilis, 17β-estradiol, progesterone, and testosterone were all present, with higher concentrations associated with reproductive activity.
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Document Type: Research Article

Affiliations: 1: Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional - Unidad Mérida, Laboratorio de Biología y Cultivo de Moluscos, Antigua Carretera a Progreso Km. 6, 97310 Mérida, Yucatán, Mexico 2: Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional - Unidad Mérida, Laboratorio de Biología y Cultivo de Moluscos, Antigua Carretera a Progreso Km. 6, 97310 Mérida, Yucatán, Mexico;, Email: [email protected]

Publication date: October 1, 2020

This article was made available online on March 18, 2020 as a Fast Track article with title: "Sex hormones in Strombus pugilis (Mollusca: Gastropoda) in different gonadal stages".

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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