Caracterización de las capturas comerciales del chucho pintado, Aetobatus narinari (Elasmobranchii: Myliobatidae), procedentes del Archipiélago de Los Frailes, región nororiental de Venezuela
Characterization of the Commercial Fishery of the Spotted Eagle Ray, Aetobatus narinari (Elasmobranchii: Myliobatidae) from Los Frailes Archipelago, Northeastern Venezuela
Keywords:
Biology, elasmobranch, fishery, sexual maturity, rays
Abstract
We analyzed the artisanal fishery of the spotted eagle ray, Aetobatus narinari, from Los Frailes Archipelago, northeastern region of Venezuela. The fishing boats used in this fishery are constructed of wood, with 6-8 m in length, two outboard motors between 40 and 75 hp. The fishing method was gillnets (43.2 cm of stretch mesh). A. narinari represented 84.5% of the total catch with monthly CPUE values oscillating between 1.5 and 5.1 ind/op; and RP values between 53.5 and 220.0 kg/op. The catches were significantly composed by female individuals (78.6%; c2 ; p < 0.05). Females measured between 76 and 220 cm DW, and males between 107 and 241 cm DW. Significant difference in length composition was found between sexes (Kruskal-Wallis; p < 0.05). Estimates for the length at maturity were 166.2 cm DW in females, and 151.9 cm DW in males. Results showed that the fishing activities selected a large number of juveniles that is more evident in males (80%) than in females (57%). The capture of higher proportions of immature individuals has a negative implication for the recovery of the population and interferes with recruitment process.
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References
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Brickle, P., V. Laptikhovsky, J. Pompert y A. Bishop. 2003. Ontogenetic changes in the feeding habits and dietary overlap between three abundant rajid species on the Falklands Islands’ shelf. Journal of the Marine Biological Association, U.K. 83: 1119–1125.
Caldas, J. P., E. M. Díaz-Trujillo, C. B. García y L. O. Duarte. 2008. La pesca de tiburones y rayas en el mar Caribe continental de Colombia: Una reseña histórica. P. 22. En: Payán, L. F., L. A. Muñoz-Osorio, V. Ramírez-Luna y L. M. Mejía-Ladino (Eds.). Libro de resúmenes I Encuentro Colombiano sobre Condrictios, Bogotá.
Camhi, M., S. Fowler, J. Musick, A. Bräutigam y S. Fordham. 1998. Sharks and their Relatives-Ecology and Conservation. IUCN/SSC, Shark Specialist Group, IUCN, Gland, Suiza y Cambrige, Reino Unido. 39 pp.
Cervigón, F. y A. Alcalá. 1999. Los Peces Marinos de Venezuela. Vol. 5. 2da. edición. Fundación Museo del Mar. Caracas, Venezuela. 230 pp.
Compagno, L. y P. Last. 1999. Myliobatidae. Pp. 1511-1519. Eagle rays. En: K.E. Carpenter and V.H. Niem (Eds.) FAO Species Identification Guide for Fishery Purposes. The Living Marine Resources of the Western Central Pacific. Volume 3. Batoid Fishes, Chimaeras and Bony Fishes Part 1 (Elopidae to Linophrynidae). Food and Agriculture Organization of the United Nations, Rome.
Cordovés, M. 2009. Aspectos biológicos y evaluación de la pesquería del chucho pintado (Aetobatus narinari) en el estado Nueva Esparta. Pp. 192. En: D. Giraldo, F. Rojas-Suárez y V. Romero (Eds.). Una mano a la naturaleza: Conservando las especies amenazadas venezolanas. Provita y Shell de Venezuela S.A. Caracas, Venezuela.
Cordovés, M., E. Ron y R. Tavares. 2010. Composición de las capturas comerciales de la raya látigo-hocicona, Dasyatis guttata (Bloch & Schneider, 1801), procedentes de la pesca artesanal de la Isla de Cubagua, Venezuela. Gulf and Caribbean Fisheries Institute 62: 567–570.
Cortes, E. 1999. Standardized diet compositions and trophic levels of sharks. ICES, Journal of Marine Science 56: 707–717.
IUCN. 2007. Review of chondrichthyan fishes. IUCN/UNEP, Technical Series No. 15. CMS Secretariat, Bonn, Germany. 72 pp.
Kyne, P., H. Ishihara, S. Dudley y W. White. 2006. Aetobatus narinari. En: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.2.
Martin, R.A. 2005. Conservation of freshwater and euryhaline elasmobranchs: a review. Journal of the Marine Biological Association, U.K. 85: 1049–1073.
McEachran, J. y M. de Carvalho. 2002. Batoid Fishes. Pp. 507-589. En: K.E. Carpenter (Ed.). The living marine resources of the Western Central Atlantic: Species identification guide for fishery purposes. FAO Special Publication 5.
Pratt, H. y J. Carrier. 2001. A review of elasmobrach reproductive behavior with a case study on the nurse shark, Ginglyostoma cirratum. Enviromental Biology of Fishes 60: 157–188.
Richards, V. P., M. Henning, W. Witzell y M. S. Shivji. 2009. Species delineation and evolutionary history of the globally distributed spotted eagle ray (Aetobatus narinari). Journal of Heredity 100: 273–283.
Ron, E., M. Cordovés y R. Tavares. 2010. Descripción de la pesquería artesanal de rayas (Pisces: Elasmobranchii) realizada en la Isla de Cubagua, Venezuela. Gulf and Caribbean Fisheries Institute 62: 575–578.
Stevens, J. 2006. Fishes of the world. Fourth Edition. John Wiley y Sons. 661 pp.
Tagliafico, T., N. Rago, S. Rangel y A. Lárez. 2008. Aspectos biológicos y CPUE del chucho Aetobatus narinari (Euphrasen, 1970) en Isla de Margarita, Venezuela. VI Reunião da Sociedade Brasileira para o Estudo de Elasmobrânquios. Livro de Resumos. Fortaleza, Brasil. p. 78.
Tavares, R. y D. López. 2010. Tendencias de la produccion de elasmobranquios en Venezuela: con enfasis en los tiburones. Gulf and Caribbean Fisheries Institute 62:178–183.
Tresierra, A. y Z. Culquichicón. 1993. Biología Pesquera. Edit. Libertad. Trujillo, Perú. 433 pp.
Welch D. W. y R. P. Foucher. 1988. A maximum likelihood methodology for estimating length at maturity with application to pacific cod (Gadus macrocephalus) population dynamics. Canadian Journal of Fisheries and Aquatic Sciences 45: 333–343.
Wetherbee, B. W. y E. Cortes. 2004. Food consumption and feeding habits. Pp. 269–286. En: J.C. Carrier, J.A. Musick y M.R. Heithaus (Eds.). Biology of Sharks and Their Relatives. CRC Press. Boca Raton, Florida.
White, W. T., M. E. Platell y I. C. Potter. 2004. Comparisons between the diets of four abundant species of elasmobranch in a subtropical embayment. Implications for resource partitioning. Marine Biology 144: 439–448.
Yamaguchia, A., I. Kawaharab y S. Ito. 2005. Occurrence, growth and food of longheaded eagle ray, Aetobatus flagellum, in Ariake Sound, Kyushu, Japan. Enviromental Biology of Fishes 74: 229–238.
Yokota, L. y R. Lessa. 2006. A nursery area for sharks and rays in North- eastern Brazil. Enviromental Biology of Fishes 75: 349–360.
Zar, J. 1996. Biostatistical analysis. Prentice Hall, New Jersey. 662 pp.
How to Cite
Cordovés, M., Ron, E., Cordovés, P., & Tavares, R. (1). Caracterización de las capturas comerciales del chucho pintado, Aetobatus narinari (Elasmobranchii: Myliobatidae), procedentes del Archipiélago de Los Frailes, región nororiental de Venezuela: Characterization of the Commercial Fishery of the Spotted Eagle Ray, Aetobatus narinari (Elasmobranchii: Myliobatidae) from Los Frailes Archipelago, Northeastern Venezuela. Anartia, (25), 47-63. Retrieved from https://produccioncientificaluz.org/index.php/anartia/article/view/40414
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