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Reproductive biology of the brown smoothhound shark, Mustelus henlei, in the northern Gulf of California, México

Por: Pérez Jiménez, Juan Carlos. Doctor [autor/a].
Sosa Nishizaki, Óscar [autor/a].
Tipo de material: Artículo en línea Artículo en línea Tema(s): Mustelus henlei | Reproducción animalDescriptor(es) geográficos: Reserva de la Biosfera Alto Golfo de California y Delta Río Colorado (México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Journal of Fish Biology. volumen 73, número 4 (September 2008), páginas 782-792. --ISSN: 0022-1112Número de sistema: 18995Resumen:
Inglés

Female brown smoothhound sharks Mustelus henlei were found to reproduce annually. A mature female carried both developing oocytes in the ovary and developing embryos in the uteri concurrently for c. 1 year. A great variability in the size of embryos was recorded each month, and the maximum embryo sizes were found from late January to mid-March. The largest oocytes in mature females were observed in mid-March. Gestation lasted c. 10 months. A linear relationship between maternal total length (LT) and the number of pups per litter (litter size one to 21) was estimated. Birth LT was reached in c. 280 mm. Females and males matured at 570-660 and 550-560 mm LT, respectively. Difference in the litter size among Californian coast (one to 10) and northern Gulf of California (one to 21) populations existed for this smoothhound shark.

Recurso en línea: http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8649.2008.01939.x/pdf
Lista(s) en las que aparece este ítem: AHMRET-Campeche
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Female brown smoothhound sharks Mustelus henlei were found to reproduce annually. A mature female carried both developing oocytes in the ovary and developing embryos in the uteri concurrently for c. 1 year. A great variability in the size of embryos was recorded each month, and the maximum embryo sizes were found from late January to mid-March. The largest oocytes in mature females were observed in mid-March. Gestation lasted c. 10 months. A linear relationship between maternal total length (LT) and the number of pups per litter (litter size one to 21) was estimated. Birth LT was reached in c. 280 mm. Females and males matured at 570-660 and 550-560 mm LT, respectively. Difference in the litter size among Californian coast (one to 10) and northern Gulf of California (one to 21) populations existed for this smoothhound shark. eng

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