| Popis: |
espanolSe estudio la diferencia de abundancia, talla y biomasa de las especies de cangrejo usadas como carnada entre las localidades de Punta del Hidalgo y Finca El Apio, entre las que se asume diferente presion marisquera. Para ello se registro la talla, sexo y peso de los taxones de interes y se trato de establecer una relacion entre la abundancia y el tipo de habitat. En ambas localidades se recolecto mayor numero de machos de los generos Pachygrapsus y Xantho. Percnon gibbesi y Pachygrapsus spp. alcanzan tallas medias mayores en la Punta del Hidalgo, mientras que Xantho spp. cuenta con tallas similares en las dos zonas. El numero de hembras ovigeras se mostro bajo pese a ser epoca de veda. Se determina que no existen diferencias significativas entre las dos localidades en cuanto al marisqueo, pero si diferencias de abundancia a nivel de habitat. A nivel individual, el genero Pachygrapsus conto con mayor presencia en areas donde predominan rocas de tamano grande. Se recomienda un seguimiento de las poblaciones en periodos dentro y fuera de veda, asi como desarrollar estudios centrados en la biologia y ecologia de dichas especies. EnglishDifferences in abundance, size and biomass were studied in crab species used as bait for fishing in two locations: Punta del Hidalgo and Finca El Apio, assuming different shellfishing pressure between them. Thus, size, sex and weight of the animals were registered in order to establish a relationship between the abundance and type of habitat. A higher number of Pachygrapsus spp. and Xantho spp. males was collected in both locations. P gibbesi and Pachygrapsus spp. reached higher shell-length values in Punta del Hidalgo, but Xantho spp. had similar length in both areas. The number of ovigerous females was low despite being harvesting ban period. No significant differences in terms of harvesting were found, but it differs according to habitat type. Individually, the genus Pachygrapsus had greater presence in areas dominated by large rocks. It is recommended to continue with the population monitoring of crabs used as bait in and out harvesting ban period and develop studies focused on the biology and ecology of these species. |
