%0 Journal Article
%T Food habits of the yellow snapper Lutjanus argentiventris (Peters, 1869) (Percoidei: Lutjanidae) in La Paz Bay, Mexico
%A V¨¢zquez
%A Rosa I
%A Rodr¨ªguez
%A Jes¨²s
%A Abitia
%A Leonardo A
%A Galv¨¢n
%A Felipe
%J Revista de biolog¨ªa marina y oceanograf¨ªa
%D 2008
%I Scientific Electronic Library Online
%R 10.4067/S0718-19572008000200008
%X a total of 304 yellow snapper lutjanus argentiventris stomachs were sampled bimonthly from april 2003 to april 2004, of which 44% contained food. we identified 54 prey species. from the index of relative importance (iri), fish eggs (62%), harengula thrissina (23%), porichthys margaritatus (3.3%), and abudefduf troschelii (2.3%) were the prey of greatest importance in its trophic spectrum. in juvenile snappers, the most important preys were unidentified organic matter (32%), the crustacean upogebia pugettensis (29%), penaeid shrimp (6.5%), and fish eggs (5.2%). the levin index determined that the diet breadth was low (bi=0.0002), indicating that it is a specialist predator showing preference for fish eggs and h. thrissina. the same result was found in males (bi=0.0002) and females (bi = 0.0009). although juveniles also showed a low trophic breadth, they preferred unidentified organic matter and u. pugettensis. the morisita-horn index showed considerable overlap in diet between genders (c¦Ë>0.6), though diet overlap was low between juveniles and adults (c¦Ë<0.2) reflecting feeding habitat differences between them.
%K yellow snapper
%K trophic habits
%K main prey
%K gulf of california.
%U http://www.scielo.cl/scielo.php?script=sci_abstract&pid=S0718-19572008000200008&lng=en&nrm=iso&tlng=en