Assessment of the impact of gillnets on the population structure of the shovelnose guitarfish rhinobatos productus from the gulf of california, mexico Report as inadecuate




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Ciencias Marinas 2011, 37 (3)

Author: JF Márquez-Farías

Source: http://www.redalyc.org/


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Ciencias Marinas ISSN: 0185-3880 cmarinas@uabc.mx Universidad Autónoma de Baja California México Márquez-Farías, JF Assessment of the impact of gillnets on the population structure of the shovelnose guitarfish Rhinobatos productus from the Gulf of California, Mexico Ciencias Marinas, vol.
37, núm.
3, septiembre, 2011, pp.
293-304 Universidad Autónoma de Baja California Ensenada, México Available in: http:--www.redalyc.org-articulo.oa?id=48020755005 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Ciencias Marinas (2011), 37(3): 293–304 Assessment of the impact of gillnets on the population structure of the shovelnose guitarfish Rhinobatos productus from the Gulf of California, Mexico C M Evaluación del impacto de las redes agalleras en la estructura de la población de la guitarra común Rhinobatos productus del Golfo de California, México JF Márquez-Farías Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Paseo Claussen s-n, Col.
Los Pinos, CP 82000, Mazatlán, Sinaloa, México.
E-mail: fermqz@yahoo.com ABSTRACT.
The shovelnose guitarfish Rhinobatos productus is the most abundant species in the artisanal ray fishery of the Gulf of California. This ray is captured when it approaches the coast for reproductive purposes and is highly vulnerable to gillnets used in the fishery.
Despite the high production of elasmobranchs in the Gulf of California, studies on reproductive and technological aspects are scarce.
In the present study, we analyzed the interaction between size-at-maturity and size-selectivity, which are represented by a logistic function and gamma distribution, respectively.
Interaction of such vectors is applied to the size-frequency distribution of the population monitored in Sonora (Mexic...





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