TY - JOUR
T1 - The artisanal elasmobranch fishery of the pacific coast of baja California sur, Mexico, management implications
AU - Ramirez-Amaro, Sergio R.
AU - Cartamil, Daniel
AU - Galvan-Magaña, Felipe
AU - Gonzalez-Barba, Gerardo
AU - Graham, Jeffrey B.
AU - Carrera-Fernandez, Maribel
AU - Escobar-Sanchez, Ofelia
AU - Sosa-Nishizaki, Oscar
AU - Rochin-Alamillo, Anet
PY - 2013
Y1 - 2013
N2 - Artisanal fisheries in Mexico account for approximately 40% of the total national catch. In 2009, Baja California Sur (BCS) had the second largest catch of elasmobranchs on the Mexican Pacific coast. This paper characterizes and describes the artisanal elasmobranch fishery of Pacific coast of BCS from 2000 to 2010. Sixty artisanal camps were documented, of which 45 targeted elasmobranchs, using primarily gillnets and longlines. We identified 52 elasmobranch species. Gillnetting accounted for 73.5% of the fishing effort and most frequently captured Rhinobatos productus, Mustelus henlei and Myliobatis californica. Longline fishing accounted for 26.5% of effort, most frequently capturing Prionace glauca and Isurus oxyrinchus. The prevalence of juveniles of several species (e.g., Cephaloscyllium ventriosum, Galeorhinus galeus, Isurus oxyrinchus, and Myliobatis californica) within landings suggests that fishing effort may be opportunistically directed at breeding or nursery areas. Despite the dominance of species with wide distributions, we observed a significant biogeo-graphic pattern in the abundance of some species relative to Bahia Magdalena. Results of the present study will be useful to detect changes in the structure of commercially exploited elasmobranch populations, and to provide useful indications for management purposes.
AB - Artisanal fisheries in Mexico account for approximately 40% of the total national catch. In 2009, Baja California Sur (BCS) had the second largest catch of elasmobranchs on the Mexican Pacific coast. This paper characterizes and describes the artisanal elasmobranch fishery of Pacific coast of BCS from 2000 to 2010. Sixty artisanal camps were documented, of which 45 targeted elasmobranchs, using primarily gillnets and longlines. We identified 52 elasmobranch species. Gillnetting accounted for 73.5% of the fishing effort and most frequently captured Rhinobatos productus, Mustelus henlei and Myliobatis californica. Longline fishing accounted for 26.5% of effort, most frequently capturing Prionace glauca and Isurus oxyrinchus. The prevalence of juveniles of several species (e.g., Cephaloscyllium ventriosum, Galeorhinus galeus, Isurus oxyrinchus, and Myliobatis californica) within landings suggests that fishing effort may be opportunistically directed at breeding or nursery areas. Despite the dominance of species with wide distributions, we observed a significant biogeo-graphic pattern in the abundance of some species relative to Bahia Magdalena. Results of the present study will be useful to detect changes in the structure of commercially exploited elasmobranch populations, and to provide useful indications for management purposes.
KW - Biogeographic pattern
KW - Elasmobranchs richness
KW - Fishing effort
KW - Mexican coast
KW - Nursery areas
KW - Small-scale fishery
UR - http://www.scopus.com/inward/record.url?scp=84884238020&partnerID=8YFLogxK
U2 - 10.3989/scimar.03817.05A
DO - 10.3989/scimar.03817.05A
M3 - Artículo
SN - 0214-8358
VL - 77
SP - 473
EP - 487
JO - Scientia Marina
JF - Scientia Marina
IS - 3
ER -