Como un primer paso, en este estudio se estiman algunos parámetros poblacionales de juveniles del pargo lunarejo capturados en la pesquería de camarón del Golfo de California. Los efectos de esta práctica no han sido evaluados.
Los adultos de esta especie, de alto valor comercial, son capturados con redes agalleras y anzuelos mientras que los juveniles son capturados como fauna de acompañamiento de la pesca de camarón y usualmente descartados. Son escasos los estudios sobre la biología poblacional del pargo lunarejo Lutjanus guttatus. With an apparently high fishing mortality levels, it is recommended that abundance and distribution studies be performed to determine the impact of shrimp fishing on this population.ĬARACTERÍSTICAS POBLACIONALES DEL PARGO LUNAREJO Lutjanus guttatus CAPTURADO CON LA FAUNA DE ACOMPAÑAMIENTO DEL CAMARÓN EN EL GOLFO DE CALIFORNIA The sex ratio was 1:1 and the length at capture was 80mm (standard length). The recruitment pattern extended throughout the year, with spring and summer peaks. Natural mortality (M= 0.35) was estimated from Paulys empirical and Ralston equations and total mortality was calculated by the catch curve equation. Length frequency distributions were constructed using the ELEFAN I method, von Bertalanffy growth parameters were found to be L¥ = 515mm (standard length) and K= 0.13. We looked for early growth stages and determined by the least squares method the weight to standard length relationship as W= 0.000092, S元.0509. As a first step, this study assessed some population parameters of juvenile snapper caught by the Gulf of California shrimp fishery. The effects of this practice have not been studied. Adults of this highly valued commercial species are fished with gillnets and hook-and-line, while juveniles are caught as shrimp bycatch and usually discarded. There are limited population biology studies of the spotted rose snapper Lutjanus guttatus. in Marine Sciences, Centro Interdisciplinario de Investigaciones Marinas, Instituto Politécnico Nacional (CICIMAR-IPN), Mexico. Doctoral candidate in Marine Biology, Centro de Investigaciones Biológicas del Noroeste (CIBNOR), La Paz, Mexico. González-Ochoa, Juana López-Martínez and Norma Yolanda Hernández-Saavedra
Snapper Lutjanus guttatus Caught as Shrimp Bycatch in the Gulf of California Population Characteristics of Spotted Rose