DOI: http://dx.doi.org/10.18257/raccefyn.242

Artículo original

Estructura de tallas, talla media de madurez sexual y razón sexual de camarones de aguas profundas de importancia comercial en el Caribe colombiano

Jorge Paramo, Samuel Núñez-Ricardo

Resumen


Con el fin de presentar información biológica de los camarones de profundidad de importancia comercial para una eventual pesquería en el mar Caribe colombiano, en el presente estudio se propuso suministrar información sobre la estructura de tallas, la talla media de madurez y la razón de sexos de los camarones de profundidad Aristaeomorpha foliacea, Pleoticus robustus y Penaeopsis serrata. Las muestras se recolectaron con pesca de arrastre en profundidades entre los 200 y los 550 m (estratos de profundidad de 100 m) en el Caribe colombiano. Se registró la longitud total, el peso total, el sexo y el número de individuos por especie en cada estación. La talla media de madurez sexual se modeló ajustando la función logística de la proporción de especímenes maduros con un intervalo de 5 mm de la longitud total. Se encontraron diferencias estadísticamente significativas en las tallas y pesos entre los sexos para las tres especies de camarones de aguas profundas, lo que reveló el dimorfismo sexual. La proporción sexual en todos los camarones de profundidad mostró diferencias significativas (p=0,000) entre el número de hembras y machos por clase de talla al compararla con una constante de referencia de 50 % de razón sexual. La relación entre la razón sexual con la talla y la distribución de la frecuencia demostró claramente una predominancia de hembras en los grupos de menor talla en A. foliacea y P. robustus. Sin embargo, en P. serrata la proporción de sexos fue igual en los grupos con las menores tallas. © Acad. Colomb. Cienc. Ex. Fis. Nat.  2015.

Palabras clave


Estructura de tallas; razón sexual; Talla media de madurez; Caribe colombiano; camarones de aguas profundas

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Referencias


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