Incidence and significance of cystic structures in the ovaries of gadoid fish

Rosario Domínguez-Petit; Alexandre Alonso-Fernández; Fran Saborido-Rey

doi:10.3989/scimar.2011.75n2359

Autores/as

Rosario Domínguez-Petit Institute of Marine Research (CSIC)
Alexandre Alonso-Fernández Institute of Marine Research (CSIC)
Fran Saborido-Rey Institute of Marine Research (CSIC)

DOI:

https://doi.org/10.3989/scimar.2011.75n2359

Palabras clave:

merluza europea, bacalao atlántico, quiste, folículo ovárico, condición, potencial reproductivo

Resumen

Los peces regulan la producción de huevos a través de la atresia. En ocasiones, los ovocitos son encapsulados en estructuras quísticas que podrían permanecer en el ovario durante meses, alterando el potencial reproductivo de las hembras en estaciones de puesta posteriores. Se tomaron ovarios de bacalao (Gadus morhua, L.) de Flemish Cap y de merluza europea (Merluccius merluccius, L.) de la costa gallega (NO España) entre 1999 y 2006. Se estimó la prevalencia e intensidad de quistes en estos ovarios. En ambas especies la prevalencia de hembras con quistes aumentó con la talla y/o edad y disminuyó al aumentar el factor de condición en el caso de la merluza. La intensidad de quistes no se correlacionó con ninguna de las variables estudiadas. La estructura de talla/edades del stock reproductor y la condición de las hembras podría afectar la prevalencia de hembras con quistes. Son necesarios más estudios para determinar el tiempo de reabsorción de estos quistes y las consecuencias que esto puede tener en la producción de huevos y por tanto en el potencial reproductivo de los stocks.

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