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Zootecnia Tropical
Instituto Nacional de Investigaciones Agrícolas Venezuela
ISSN: 0798-7269
Vol. 25, No. 3, 2007, pp. 211-214
Bioline Code: zt07030
Full paper language: Spanish
Document type: Research Article
Document available free of charge

Zootecnia Tropical, Vol. 25, No. 3, 2007, pp. 211-214

 es Aspectos biométricos y dinámica reproductiva de la langosta espinosa, Panulirus argus check for this species in other resources , en áreas de pesca de la costa norte de la Península de Paria, estado Sucre, Venezuela
Gómez, Gabriel; Guzmán, Ramón & Barrios, Alexander

Resumen

La estructura de tallas del cefalotórax (LC) y las características reproductivas de la langosta espinosa, Panulirus argus check for this species in other resources , de la costa norte de la Península de Paria fueron analizadas para facilitar la evaluación del recurso y sugerir políticas de manejo. En este sentido, un total de 1.270 langostas fueron analizadas provenientes de los desembarques de la flota de Puerto Santo, las cuales se muestrearon mensualmente entre noviembre 2003 y abril 2004. La mayoría de los ejemplares en la muestra (61%) presentaron tallas del cefalotórax inferiores a la mínima legal (120 mm), siendo el promedio para las hembras de 109,4 mm y para los machos de 121,1 mm, resultando la diferencia entre sexos significativamente diferente (P<0,05). La talla promedio general fue 115,9 mm. Se estimó una ecuación común para la regresión longitud – peso total, definida como: P = 0,0051*(LC)2,61. La proporción total de sexos favoreció a los machos (1:1,29) (P<0,001). Las mayores frecuencias de hembras maduras se observaron en noviembre (40%) y diciembre (27%), siendo el principal indicador reproductivo la presencia de placa espermatófora, ya que el 71% de las hembras maduras presentaron esta característica. La talla a la cual el 50% de las hembras estaban maduras se ubicó en el intervalo 100-109,9 mm de LC y se consideró sobreestimada.

Palabras-clave
Langosta espinosa, pesca artesanal, Estado Sucre, tallas del cefalotórax, características reproductivas.

 
 en Biometric aspects and reproductive dynamics of the spiny lobster, Panulirus argus check for this species in other resources ,in the fishing grounds of the northern coast of Paria peninsula, Sucre state, Venezuela
Gómez, Gabriel; Guzmán, Ramón & Barrios, Alexander

Abstract

The size structure of cephalothorax (LC) and the reproductive characteristics of the spiny lobster, Panulirus argus check for this species in other resources , from the northern coast of Paria peninsula were analyzed in order to facilitate the evaluation of the resource and to suggest management policies. In this sense, a total of 1270 animals were measured from those landed by the fleet of Puerto Santo, which were sampled monthly between November 2003 and April 2004. Most of the animals in the sample (61%) were below the minimum legal size for LC (120 mm), being the average for females 109.4 mm and for males 121.1 mm, with significant differences between sexes (P<0.05). The general average size was 115.9 mm. A common length – weight regression equation was defined as: P = 0.0051*(LC)2.61. The proportion of sexes was significantly in favor of males (1:1.29) (P<0.001). The largest frequency of mature females was observed in November (40%) and December (27%), being the spermatophore plate the main reproductive indicator, since 71% of the mature females showed this property. The size at which 50% of females were mature was estimated in the interval 100-109.9 mm LC, and is still considered overestimated.

Keywords
Spiny lobster, artisanal fishery, Sucre State, size of cephalothorax, reproductive characteristics.

 
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