Estrés en la comunidad íctica en la pesca de arrastre del camarón en el norte del Golfo de California

Abstract

Estrés en la comunidad íctica en la pesca de arrastre del camarón en el norte del Golfo de California Abstract: Determination of stress in fish community obtained from shrimp trawl fishing in Northern Gulf of California. Bottom trawling has been considered a fishing activity that affects and modifies habitats, because of its impacts in species composition and abundance, and the alteration in the structure and function of the ecosystem, that generates biodiversity loss. The Northern part of the Gulf of California has been considered a mega diverse zone with high endemism, and it is of growing interest by the international scientific community. In order to assess its potential changes in the fish community components of shrimp by-catch (FAC) in this area, a total of 119 trawls from 13 fishing boats were analyzed in Puerto Peñasco, based on 14 commercial fishing trips made within 9-90 m depth from 2010-2011. A random sample of 20 kg was obtained from each trawl, and was analyzed in the laboratory for species composition. In addition to the Index of Biological Value (IVB), Shannon diversity (H'), and Pielou evenness (J'), comparative abundance-biomass curves (ABC) were also estimated.

Reproduction and community structure of fish from winter catch sites from industrial shrimp bycatch from the northeast and southeast Mexican Pacific

“…The present study is the first to analyse the sizes at first maturity of the fish species present in shrimp-bycatch (using both inferring and direct methods) as well as community structure. The diversity values from this work correspond to other works from the Gulf of California and other subtropical areas ( Barreto, Polo & Mancilla, 2001 ; Mora, Jurado & Mendívez, 2010 ; Herrera-Valdivia, López-Martínez & Castillo-Vargasmachuca, 2015 ). The diversity index helps to estimate the health of an ecosystem ( Jennings & Reynolds, 2000 ).…”

“…The shrimp-bycatch in Mexico, as in other tropical countries, is composed of a wide diversity of molluscs, echinoderms, crustaceans and fish species ( Herrera-Valdivia, López-Martínez & Castillo-Vargasmachuca, 2015 ), which are located principally in the nation’s coastal areas ( Lucano-Ramírez et al, 2001 ). The present study is the first to analyse the sizes at first maturity of the fish species present in shrimp-bycatch (using both inferring and direct methods) as well as community structure.…”

Colorado River flow and biological productivity in the Northern Gulf of California, Mexico

“…In addition to having high nutrient levels and primary productivity, the Gulf is also biologically diverse, harboring about 6000 described animal species, over 2800 of which (including over 130 endemic species) inhabit the Northern Gulf (Brusca et al 2005, Brusca 2007, Herrera-Valdivia et al 2015, Brusca and Hendrickx 2015.…”

Composicion de la ictiofauna capturada en la pesqueria artesanal de la Isla Isabel (sureste del Golfo de California), Mexico

“…Este estudio reporta por primera vez el índice H', que servirá como indicador para posteriores estudios donde se compare el impacto de la pesca en esta zona, ya que se ha demostrado que la diversidad puede disminuir conforme avanza la temporada de pesca o a través de los años (Herrera-Valdivia et al, 2015) o debido a cambios en las condiciones climáticas del océano (Rojo-Vázquez et al, 2008).…”