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Juvenile pink shrimp, Farfantepenaeus duorarum (Burkenroad, 1939): length composition in three nursery areas in campeche sound, Gulf of Mexico

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Characteristics of the recruitment of juvenile pink shrimp, Farfantepenaeus duorarum in three nursery areas in Campeche Sound, southern Gulf of Mexico, were analysed from length-frequency data collected from 1992 through 1995, and from catch-per-unit-effort data from 1994 to 1995. Three juvenile size categories were determined: small (10-39 mm TL), medium (40-49 mm TL), and large (50-130 mm TL). The abundance was higher during the rainy and windy months, and was lower during the dry season, but there were differences in duration of the recruitment season and in the size of the shrimp recruiting to each area. Small juvenile pink shrimp were present all year, which gives evidence of continuous reproduction with different intensities. The 1995 recruitment season was shorter than that in 1994 and showed low abundance. The monthly size composition of juvenile pink shrimp was related to gear selectivity, but true values probably depend on environmental influences on recruitment. The size composition of juvenile F. duorarum can change by zone or season. Para determinar características del reclutamiento de juveniles de camarón rosado Farfantepenaeus duorarum a tres áreas de crianza en la costa de la Sonda de Campeche, México, se analizan datos de frecuencia de tallas recolectados de 1992 a 1995 y de captura por unidad de esfuerzo de 1994 y 1995. Se determinó la importancia relativa de las categorías de camarones juveniles chicos (10-39 mm LT), medianos (40-49 mm LT) y grandes (50-130 mm LT). El patrón de abundancia muestra valores altos durante la estación de lluvias y vientos, y bajos en la seca. Se observaron cambios en la duración de las temporadas de reclutamiento y en los tamaños de los camarones que se reclutan. Los individuos chicos estuvieron presentes todo el año, evidenciando la reproducción continua. La temporada de 1995 fue más corta que la de 1994 y la abundancia de juveniles disminuyó notablemente. En la composición por tallas influye la selectividad de los artes de pesca y puede suponerse su relación con efectos ambientales. Se encontraron cambios por área y temporada en la composición de tallas de los juveniles.


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