Resumo

CHIAPPA-CARRARA, Xavier; ROJAS-HERRERA, Agustín A.  e  MASCARO, Maite. Coexistencia de Lutjanus peru y Lutjanus guttatus (Pisces: Lutjanidae) en la costa de Guerrero, México: relación con la variación temporal en el reclutamiento. Rev. biol. trop [online]. 2004, vol.52, n.1, pp.177-185. ISSN 0034-7744.

Monthly volumes of capture of Lutjanus peru and Lutjanus guttatus from the coast of Guerrero, Mexico, were analyzed considering eight annual cycles. Time-series, auto correlation, and cross-correlation analysis showed that monthly abundance of populations display unsystematic variations. The FiSAT software was used to obtain the recruitment patterns of both species, using length-frequency data. Our results support the hypothesis that temporal phase-shifts in reproductive events, hence recruitment, explain the coexistence of these species. The outcome of this mechanism is a temporal succession of specific recruit abundance off the coasts of Guerrero, Mexico. The uncoupling of the recruitment events between these species, induces a separation of recruits; therefore, the intake of a particular set of preys could take place at different times

Palavras-chave : coexistence; recruitment; Lutjanus guttatus; Lutjanus peru; Guerrero; Mexico.