Vista normal Vista MARC

Determining reproductive parameters for population assessments of two smoothhounds (Mustelus californicus and Mustelus lunulatus) from the northern Gulf of California, Mexico

Tipo de material: Artículo impreso(a) y electrónico Artículo impreso(a) y electrónico Idioma: Inglés Tema(s) en español: Tema(s) en inglés: Recurso en línea: Formatos físicos adicionales disponibles:
  • Disponible en línea
 En: Bulletin of Marine Science volumen 86, número 1 (January 2010), páginas 3-13Nota de acceso: Acceso en línea sin restricciones Resumen:
Inglés

We estimated the reproductive parameters needed for assessment of the commercially exploited populations of the grey smoothhound Mustelus californicus (Gill, 1864) and the sicklefin smoothhound Mustelus lunulatus (Jordan and Gilbert, 1883) from the northern Gulf of California. Results indicated that females of M. californicus and M. lunulatus reproduce annually; with a gestation of approximately 11 mo (gestation and vitellogenesis were concurrent). Females and males of M. californicus matured at 862 and 728 mm total length (TL), respectively, and females and males of M. lunulatus matured at 1032 and 915 mm TL, respectively. A linear relationship between maternal TL and litter size was estimated for both species. Litter sizes were 7-16 for M. californicus and 6-19 for M. lunulatus. All near-term gravid and postpartum females of both species were caught in the Biosphere Reserve of the Upper Gulf of California and Colorado River Delta (the northernmost region of the gulf) between February and June, which suggests that this area is a pupping ground for both species.

Número de sistema: 49046
Lista(s) en las que aparece este ítem: AHMRET-Campeche
Etiquetas de esta biblioteca: No hay etiquetas de esta biblioteca para este título. Ingresar para agregar etiquetas.
Valoración
    Valoración media: 0.0 (0 votos)
Existencias
Tipo de ítem Biblioteca actual Colección Info Vol Estado Código de barras
Artículos Biblioteca Electrónica Recursos en línea (RE) ECOSUR Recurso digital ECO400490468772
Artículos Biblioteca San Cristóbal Artículos Hemeroteca (AR HM) ECOSUR 001 Disponible 460620C49046-10

Acceso en línea sin restricciones

We estimated the reproductive parameters needed for assessment of the commercially exploited populations of the grey smoothhound Mustelus californicus (Gill, 1864) and the sicklefin smoothhound Mustelus lunulatus (Jordan and Gilbert, 1883) from the northern Gulf of California. Results indicated that females of M. californicus and M. lunulatus reproduce annually; with a gestation of approximately 11 mo (gestation and vitellogenesis were concurrent). Females and males of M. californicus matured at 862 and 728 mm total length (TL), respectively, and females and males of M. lunulatus matured at 1032 and 915 mm TL, respectively. A linear relationship between maternal TL and litter size was estimated for both species. Litter sizes were 7-16 for M. californicus and 6-19 for M. lunulatus. All near-term gravid and postpartum females of both species were caught in the Biosphere Reserve of the Upper Gulf of California and Colorado River Delta (the northernmost region of the gulf) between February and June, which suggests that this area is a pupping ground for both species. Inglés

Disponible en línea

Adobe Acrobat profesional 6.0 o superior