La Paz bay and sampling locationsДЇigura 1. The yellow snapper was sampled bimonthly from April 2003 to April 2004 in estuaries and fishing camps in La Paz bay, mainly off El Portugues, El Saladito, San Juan de la Costa, La Gaviota, and Espiritu Santo Island (San Gabriel and El Cardonal) ( Fig. The knowledge of snapper trophic biology is incomplete and the present study contributes on the trophic dynamics of this species. Also, Leventhal (1982) and Funes & Matal (1989) mentioned that this snapper feeds on crustaceans, mainly penaeid shrimp, stomatopods, xanthids, and portunids. argentiventris feed on decapods, fish, and amphipods in the lower Gulf of California. 1994).ДЇor the yellow snapper, Maeda (1981) found that L. They are also known to eat seaweed, sponges, salps, and worms (DГaz 1994, Sierra et al. decapods, cephalopods, and gastropods (Allen 1987, DГaz 1994, Sierra et al. All are carnivores, feeding mainly on fish and benthic crustaceans, e.g. Several studies on the trophic biology of fish of the family Lutjanidae showed that snappers are predators with variable feeding habits. The juveniles live mainly in mangroves, where they form small aggregations (Fischer et al. Lutjanus argentiventris is a demersal species with adults inhabiting rocky and coral reefs or in caves between rocks. Their high quality meat is sold fresh or frozen (BerdeguГ© 1956, Fischer et al. In La Paz bay the yellow snapper Lutjanus argentiventris (Peters, 1869) is an important fishery resource, yielding close to 8 t per year (RamГrez 1996). The fish of the family Lutjanidae, commonly known as snappers, are a fishing resource of great importance in the Gulf of California, mainly along the southeastern coast of Baja California Sur (RodrГguez et al. Key words: Yellow snapper, trophic habits, main prey, Gulf of California El Гndice de Morisita-Horn mostrГі un traslapo significativo en la dieta por sexo, ( CО»>0,6), mientras que para juveniles y adultos se registrГі un traslapo bajo ( CО»0.6), though diet overlap was low between juveniles and adults ( CО»<0.2) reflecting feeding habitat differences between them. Los juveniles mostraron una baja amplitud de dieta, consumiendo principalmente materia orgГЎnica no identificada y U. El mismo resultado se obtuvo para machos ( Bi=0,0002) y hembras ( Bi=0,0009). El Гndice de Levin determinГі que la amplitud de la dieta fue baja ( Bi= 0,0002), siendo considerado un depredador selectivo, mostrando un consumo preferencial por los huevos de peces y H. En los juveniles, las presas de mayor importancia fueron la materia orgГЎnica no identificada (32%), los crustГЎceos Upogebia pugettensis (29%) y los camarones peneidos (6,5%), asГ como los huevos de peces (5,2%). De acuerdo con el Гndice de importancia relativa (IIR), los huevos de peces (62%) y los peces Harengula thrissina (23%), Porichthys margaritatus (3,3%) y Abudefduf troschelii (2,3%) fueron las presas de mayor importancia en su dieta. analizaron 304 estГіmagos del pargo amarillo Lutjanus argentiventris recolectados bimestralmente de abril 2003 a abril 2004, de los cuales 44% presentГі alimento (44%). postal 592, La Paz, Baja California Sur, MГ©xico. 23090 2Centro Interdisciplinario de Ciencias Marinas, Instituto PolitГ©cnico Nacional CICIMAR, Apdo.

La Paz, Baja California Sur, MГ©xico, C.P. вњњentro de Investigaciones BiolГіgicas del Noroeste, S.C., Mar Bermejo 195, Apdo. VГЎzquez 1, JesГєs RodrГguez 1, Leonardo A.

HГЎbitos alimenticios del pargo amarillo Lutjanus argentiventris (Peters, 1869) (Percoidei: Lutjanidae) en la BahГa de La Paz, MГ©xico Revista de BiologГa Marina y OceanografГa 43(2): 295-302, agosto de 2008ДЇood habits of the yellow snapper Lutjanus argentiventris (Peters, 1869) (Percoidei: Lutjanidae) in La Paz Bay, Mexico

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