Reproductive parameters of the shovelnose guitarfish Pseudobatos productus (Ayres, 1856) in Northwest Mexico

D. Juaristi-Videgaray, A. Hernández-Herrera, F. Galván-Magaña, R. I. Ochoa-Báez, M. T. Villalejo-Fuerte, O. M. Bejarano-Álvarez

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

The shovelnose guitarfish Pseudobatos productus is a major species in batoid catch on the north-western coasts of Mexico. Our goal was to describe the reproductive biology of this species, including morphometric and histological analysis of the gonads. Sampling was carried out on artisanal fishing camps near Bahía Tortugas, Baja California Sur, Mexico. A total of 147 organisms were collected, with a size of 58.9 to 162 cm of total length (TL). The size of first maturity (L50%) was 111.3 cm TL for females, and 102.2 cm TL for males. The sex ratio was 1.42 females per male, but 1:1 for embryos. Positive correlations were found between TL and the number of oocytes, the diameter of oocytes, the uterus height, the oviducal gland height, the oviducal gland width, and the clasper length. We describe four histological zones in the oviducal gland of females, with no sperm storage. Mature testicle lobes showed distinct spermatogenesis stages, ranging from spermatogonia to mature sperm cells.

Idioma originalInglés
Páginas (desde-hasta)204-215
Número de páginas12
PublicaciónEuropean Zoological Journal
Volumen88
N.º1
DOI
EstadoPublicada - 2021

Huella

Profundice en los temas de investigación de 'Reproductive parameters of the shovelnose guitarfish Pseudobatos productus (Ayres, 1856) in Northwest Mexico'. En conjunto forman una huella única.

Citar esto