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ESTRATEGIA REPRODUCTIVA DE LA GAMBA BLANCA PARAPENAEUS LONGIROSTRIS EN ÁFRICA OCCIDENTAL

Authors: García-Isarch, E. (Eva); Duque-Nogal, V. (Verónica); Romero, Z. (Zeneida); Quinzán, M. (Marta); García-Rebollo, J.M. (José Miguel); Czerwinski, I.A. (Ivone Alejandra);

ESTRATEGIA REPRODUCTIVA DE LA GAMBA BLANCA PARAPENAEUS LONGIROSTRIS EN ÁFRICA OCCIDENTAL

Abstract

La gamba blanca es la principal especie objetivo de la flota marisquera española en los caladeros de África occidental, entre los que destacan Mauritania y Guinea-Bissau. En este trabajo se analiza la biología reproductiva de la especie en estos dos caladeros a partir de muestreos biológicos realizados por observadores a bordo de esta flota en dos ciclos anuales consecutivos. Se muestrearon un total de 7697 individuos durante los doce meses de observación en Mauritania y 8720 individuos durante los nueve meses de observación con captura de esta especie en Guinea-Bissau. En base al porcentaje de individuos maduros por mes y lance de pesca, se han determinado para cada caladero el periodo y las principales zonas de reproducción, así como la talla de primera madurez mediante un Modelo Linear Generalizado (GLM) con errores binomiales con el paquete INBIO desarrollado en R. Prácticamente todos los machos muestreados estaban maduros a lo largo de todo el año en ambos caladeros. Se detectaron hembras maduras en la mayoría de los meses muestreados, aunque con al menos un pico de puesta durante la estación fría en Mauritania y dos picos de puesta, uno en la estación húmeda y otro en la estación seca de Guinea-Bissau. Las tallas de primera madurez estimadas para hembras de Mauritania y Guinea-Bissau fueron 23.7 mm y 23.3 mm de longitud de cefalotórax, respectivamente. Las principales zonas de puesta se localizaron al sur de cabo Timiris, en Mauritania y en la zona sur de Guinea-Bissau, ambas entre 200-300 m de profundidad.

Country
Spain
Keywords

periodo de reproducción, zona de puesta., Pesquerías, Centro Oceanográfico de Cádiz, África occidental, gamba, Parapenaeus longirostris

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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