ABUNDANCIA RELATIVA, ESTRUCTURA DE TALLAS Y RELACIÓN LONGITUD-PESO DE LA MOJARRA MEXICANA Eugerres mexicanus<7em>

José Valdéz-Zenil, Rocío Rodiles-Hernández, Adrián Felipe González-Acosta, Everardo Barba-Macías, Manuel Mendoza-Carranza

Abstract


La mojarra mexicana Eugerres mexicanus (Steindachner), es una especie de agua dulce con distribución exclusiva en el sureste de México y norte de Guatemala, forma parte de las pesquerías artesanales y se comercializa a nivel regional, por lo que representa un recurso importante para la economía familiar. En este estudio se evaluó la abundancia (densidad y biomasa), relación longitud-peso (L-W) y factor de condición relativo, a partir de ejemplares recolectados durante abril 2008 a enero 2010 en la cuenca del Río Usumacinta, Municipio de Tenosique, Tabasco (México). Se obtuvo un total de 355 individuos con predominio de hembras en la población (50.4 %). Las relaciones longitud-peso (L-W) y longitud patrón-longitud total (L-L) revelaron un buen ajuste para la regresión lineal aplicada a la población (r > 0,9766, p  < 0,001), con valores de b que varían de 3.0886 (machos) a 3.3115 (juveniles).  El factor de condición relativo mostró variación entre los grupos de machos (Kn = 1.0015), hembras (Kn = 1.0013) y juveniles (Kn = 1.012). La información aquí presentada será de utilidad para el desarrollo de programas de conservación y manejo pesquero de esta especie endémica de la región Neotropical.

Keywords


Gerreidae, abundancia y crecimiento

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DOI: http://dx.doi.org/10.19136/era.a2n6.462

ECOSISTEMAS Y RECURSOS AGROPECUARIOS(ECOSYSTEMS AND AGRICULTURAL RESOURCES), Year 6, Issue 16, January-April 2019, is a triannual journal edited, published and distributed by the Universidad Juárez Autónoma de Tabasco, Av. Universidad s/n, Zona de la Cultura, Col. Magisterial, Villahermosa, Centro, Tabasco, CP. 86040, Tel (993) 358 15 00, www.ujat.mx, era@ujat.mx., era@ujat.mx. Editor-in-chief: Efraín de la Cruz Lázaro. Copyright No. 04-2013-120514213600-203, ISSN: 2007-901X, both granted by the Instituto Nacional del Derecho de Autor (National Institute of Copyright), with certificate of title and content No. 16540 granted by the Secretaría de Gobernación(Ministry of the Interior). Individual responsible for the last update of this issue was journal Editorial Assistant Lic. Misael Hernández Martínez, Av. Universidad s/n, Zona de la Cultura, Col. Magisterial, Vhsa, Centro, Tabasco, Mex. C.P. 86040; date of last modification, December 31, 2018.

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