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Length-weight and length-length relationships, gonadosomatic indices and size at first maturity of Eugerres mexicanus (Steindachner, 1863) (Percoidei: Gerreidae) from the Usumacinta River, Mexico

Valdez Zenil, José [autor] | Rodiles Hernández, María del Rocío, 1956- [autora] | González Acosta, Adrián Felipe [autor] | Mendoza Carranza, Manuel [autor] | Barba Macías, Everardo [autor].
Tipo de material: Artículo en línea Artículo en línea Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Eugerres mexicanus | Índice gonadosomático | Biología pesqueraTema(s) en inglés: FisheriesDescriptor(es) geográficos: Tenosique (Tabasco, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Journal of Applied Ichthyology. Volumen 30, número 1 (February 2014), páginas 218-220. --ISSN: 0175-8659Número de sistema: 18226Resumen:
Inglés

This study examines the length-weight (L-W) and length- length (L-L) relationships, gonadosomatic indices, and size at sexual maturity for individuals of the endemic Mexican mojarra, Eugerres mexicanus (Steindachner, 1863) from the Usumacinta River Basin, Tabasco, Mexico. From April 2008 to January 2010, 360 specimens were examined, including 151 (41.9%) male, 179 (49.7%) female and 30 unsexed (8.3%) individuals. Overall female:male ratio was 1.2 : 1. Gonadosomatic index (GSI) values indicate increased repro- ductive activity during February, with significant differences between males (GSI = 2.07) and females (GSI = 5.48). The mean size at first maturity (L 50 ) was 17.3 cm TL for males and 20.5 cm TL for females.

Recurso en línea: https://doi.org/10.1111/jai.12267
Lista(s) en las que aparece este ítem: Producción Rocío Rodiles Hernández | María del Rocío Rodiles Hernández
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Disponible para usuarios de ECOSUR con su clave de acceso

This study examines the length-weight (L-W) and length- length (L-L) relationships, gonadosomatic indices, and size at sexual maturity for individuals of the endemic Mexican mojarra, Eugerres mexicanus (Steindachner, 1863) from the Usumacinta River Basin, Tabasco, Mexico. From April 2008 to January 2010, 360 specimens were examined, including 151 (41.9%) male, 179 (49.7%) female and 30 unsexed (8.3%) individuals. Overall female:male ratio was 1.2 : 1. Gonadosomatic index (GSI) values indicate increased repro- ductive activity during February, with significant differences between males (GSI = 2.07) and females (GSI = 5.48). The mean size at first maturity (L 50 ) was 17.3 cm TL for males and 20.5 cm TL for females. eng

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