Regresar
Resumen del producto
Ortega-García, S., A., Abad-Uribarren, U., Jakes-Cota & N., Vélez-Arellano
(2019).
Histological evidence of Bluefin tuna (Thunnus thynnus Linnaeus, 1758) spawning in waters within the Mexican Exclusive Economic Zone in the Gulf of Mexico.
Marine Biology Research.
15(7): 444-450.
DOI: 10.1080/17451000.2019.1662448.
Histological evidence of Bluefin tuna (Thunnus thynnus Linnaeus, 1758) spawning in waters within the Mexican Exclusive Economic Zone in the Gulf of Mexico
Sofía Ortega-García, Alberto Abad-Uribarren, Ulianov Jakes-Cota y Nurenskaya Vélez-Arellano
Ovaries of bluefin tuna, Thunnus thynnus, from organisms measuring 247.62?±?3.54 cm fork length collected within the Mexican Exclusive Economic Zone in the Gulf of Mexico, were examined. The highest gonadosomatic index was recorded in April (1.6?±?0.28), coinciding with the presence of oocytes with a migratory nucleus (oocyte diameter 439?±?32.84 µm); fully developed gonads were also observed in two females and two males (ovaries or testes, respectively) caught in late April when sea surface waters exceeded 26 °C. The microscopic examination of the gonads sampled showed structures that evidenced spawning in females measuring 280 cm FL.
Palabras clave: Atlantic bluefin tuna; Reproduction; gonadosomatic index; histology
Para obtener una copia del documento contacta la personal de la biblioteca a través del correo bibliocicimar{a}ipn.mx
Regresar