The artisanal elasmobranch fishery of the Pacific coast of Baja California Sur, Mexico, management implications

TitleThe artisanal elasmobranch fishery of the Pacific coast of Baja California Sur, Mexico, management implications
Publication TypeJournal Article
Year of Publication2013
AuthorsRamirez-Amaro S.R, Cartamil D., Galvan-Magana F., Gonzalez-Barba G., Graham JB, Carrera-Fernandez M., Escobar-Sanchez O., Sosa-Nishizaki O., Rochin-Alamillo A.
JournalScientia Marina
Volume77
Pagination473-487
Date Published2013/09
Type of ArticleArticle
ISBN Number0214-8358
Accession NumberWOS:000324806900009
Keywordsbehavior; biogeographic pattern, elasmobranchs richness, fishing effort, Mexican coast, nursery areas, small-scale fishery; chondrichthyes carcharhinidae; conservation; ecosystems; guitarfish; gulf-of-mexico; lent lg, 1985, california fish and game, v71, p210; marine fish; reproductive-biology; Sexual segregation; shark resources
Abstract

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 biogeographic 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.

DOI10.3989/scimar.03817.05A
Short TitleSci. Mar.
Integrated Research Themes: 
Student Publication: 
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