Registro de hermafroditismo en sardina (Sardinops sagax) capturada en Pisco, Perú

Marilú Bouchon; Jimy Calderón; Sandra Cahuín; Javier Sánchez; Héctor Sarmiento; Angelo Nizama

doi:10.53554/boletin.v41i1.462

Authors

Marilú Bouchon Instituto del Mar del Perú, Dirección General de Investigaciones en Recursos Pelágicos, Callao, Perú. https://orcid.org/0000-0001-7458-0878
Jimy Calderón Instituto del Mar del Perú, Laboratorio Costero de Pisco, Ica, Perú.
Sandra Cahuín Instituto del Mar del Perú, Dirección General de Investigaciones en Recursos Pelágicos, Callao, Perú. https://orcid.org/0009-0003-5734-4541
Javier Sánchez Instituto del Mar del Perú, Dirección General de Investigaciones en Recursos Pelágicos, Callao, Perú. https://orcid.org/0000-0003-3207-9406
Héctor Sarmiento Instituto del Mar del Perú, Laboratorio Costero de Pisco, Ica, Perú.
Angelo Nizama Instituto del Mar del Perú, Dirección General de Investigaciones en Recursos Pelágicos, Callao, Perú. https://orcid.org/0000-0001-5841-3834

DOI:

https://doi.org/10.53554/boletin.v41i1.462

Keywords:

Sardinops sagax, sardine, hermaphroditism, Pisco, Peru

Abstract

A hermaphroditic specimen of Sardinops sagax was identified during routine sampling activities conducted as part of the Pelagic Fisheries Monitoring Program at the Pisco Coastal Laboratory. On 28 November 2025, a single individual was collected off Punta Prieta (13°55′50.16″S, 76°19′49.97″W), approximately 600 m from the coastline in the Pisco coastal sector. Although the specimen exhibited normal external morphology and body condition, gonadal examination revealed an unusual bilateral configuration, with one lobe consisting of ovarian tissue and the other of testicular tissue. Histological examination confirmed the hermaphroditic condition, characterized by the presence of vitellogenic oocytes within the ovarian lobe and a sparse distribution of spermatocytes in the testicular lobe. To our knowledge, this finding represents the first documented case of hermaphroditism in Sardinops sagax from Peruvian waters. The occurrence of this condition raises important questions regarding its prevalence, underlying causes, and potential ecological or environmental drivers in natural populations.

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