Biología reproductiva de Mugil cephalus “Lisa” (Linnaeus, 1758) desembarcados en La Libertad, 2022-2023
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Date
2025
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Universidad Nacional de Trujillo
Abstract
La lisa (Mugil cephalus) es una especie demersal costera de suma importancia para la pesca artesanal en el norte del Perú. Su pesquería tiene como fin exclusivo el consumo humano directo brindando seguridad alimentaria a la población. A pesar de su importancia comercial no se hallaron estudios con respecto a su biología reproductiva que garanticen su sostenibilidad. El presente estudio tuvo como objetivo describir la biología reproductiva de los desembarques durante el periodo 2022 – 2023 en La Libertad, Perú. Se determinaron el índice gonadosomático (IGS), índice hepatosomático (IHS), factor de condición (FC), actividad reproductiva (AR), proporción sexual global y a la talla, y talla de madurez gonadal. Las gónadas se procesaron histológicamente con la técnica de infiltración en parafina (Humason, 1979) y la coloración se realizó con hematoxilina y eosina (H-E). Se describió el desarrollo de los gametos femeninos y masculinos identificados. No se hallaron ovocitos hidratados y folículos post-ovulatorios en las células femeninas, ni espermátidas en las células masculinas. La caracterización de las fases de madurez gonadal encontradas en hembras y machos se elaboró mediante la descripción de las características macroscópicas validadas de acuerdo con las características microscópicas estableciendo las singularidades de cada fase de madurez a nivel de parénquima gonadal y de las células sexuales masculinas y femeninas.
The flathead mullet (Mugil cephalus) is a coastal demersal species of utmost importance for artisanal fishing in northern Peru. Its fishery is exclusively for direct human consumption, providing food security to the population. Despite its commercial importance, no studies were found regarding its reproductive biology that guarantee its sustainability. The present study aimed to describe the reproductive biology of landings during the period 2022 - 2023 in La Libertad, Peru. The gonadosomatic index (GSI), hepatosomatic index (HSI), condition factor, reproductive activity, overall and at-length sex ratio, and length at first sexual maturity were determined. The gonads were histologically processed using the paraffin infiltration technique (Humason, 1979) and stained with hematoxylin and eosin (H-E). The development of the identified female and male gametes was described. No hydrated oocytes and post-ovulatory follicles were found in female cells, nor spermatids in male cells. The characterization of the phases of gonadal maturity found in females and males was carried out by describing the macroscopic characteristics validated according to the microscopic characteristics, establishing the singularities of each phase of maturity at the level of gonadal parenchyma and of male and female sexual cells.
The flathead mullet (Mugil cephalus) is a coastal demersal species of utmost importance for artisanal fishing in northern Peru. Its fishery is exclusively for direct human consumption, providing food security to the population. Despite its commercial importance, no studies were found regarding its reproductive biology that guarantee its sustainability. The present study aimed to describe the reproductive biology of landings during the period 2022 - 2023 in La Libertad, Peru. The gonadosomatic index (GSI), hepatosomatic index (HSI), condition factor, reproductive activity, overall and at-length sex ratio, and length at first sexual maturity were determined. The gonads were histologically processed using the paraffin infiltration technique (Humason, 1979) and stained with hematoxylin and eosin (H-E). The development of the identified female and male gametes was described. No hydrated oocytes and post-ovulatory follicles were found in female cells, nor spermatids in male cells. The characterization of the phases of gonadal maturity found in females and males was carried out by describing the macroscopic characteristics validated according to the microscopic characteristics, establishing the singularities of each phase of maturity at the level of gonadal parenchyma and of male and female sexual cells.
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Keywords
Mugil cephalus, escala de madurez gonadal, talla de madurez gonadal, biología reproductiva.