Journal
REVISTA DE BIOLOGIA TROPICAL
Volume 70, Issue -, Pages 408-422Publisher
REVISTA DE BIOLOGIA TROPICAL
DOI: 10.15517/rev.biol.trop..v70i1.49308
Keywords
histology; caracol chino; riparian fishing; reproductive activity; mollusk population; fisheries management
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This study assessed fishery data for Hexaplex princeps in Guerrero. The results showed that the reproductive activity of this species mainly occurred from December to July, related to sea surface temperatures. The study also found a high percentage of juvenile organisms in the catches.
Introduction: The snail Hexaplex princeps is the most important gastropod in the fishery of Guerrero, but capture is not legally regulated for lack of enough studies about its reproduction, growth and other fishing aspects. Objective: To assess fishery data for H. princeps in Guerrero. Methods: From October 2016 to December 2017, we analyzed histological samples of the gonads from 6 to 13 individuals per month. We also collected data on pre-reproductive organisms captured in Costa Chica (2013 and 2014), Costa Grande (2017) and Acapulco (2019 and 2020). Results: Both sexes have five stages of gonadal development; most reproductive activity was from December to July, related to sea surface temperatures of 26 to 28 degrees C. The LCM in females was 94.1 mm (males: 86.1 mm). There was a high percentage of juvenile organisms in the catches (88.6 %). Conclusions: To let these snails reproduce at least once, we recommend a fishing ban from December to July, and that the minimum size of commercial capture be set at 94.1 mm.
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