SciELO - Scientific Electronic Library Online

 
vol.82 número1Respuestas fotosintéticas a la radiación UV en algas intermareales del Estrecho de Magallanes (Chile)Estructura del paisaje a lo largo de gradientes urbano-rurales en la cuenca del río Aisén (Región de Aisén, Chile) índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Revista chilena de historia natural

versión impresa ISSN 0716-078X

Resumen

FLORES, KAREN  y  GEORGE-NASCIMENTO, MARIO. Parasite infracommunities of two blennid species, Scartichthys (Pisces: Blenniidae), at nearby localities off northern Chile. Rev. chil. hist. nat. [online]. 2009, vol.82, n.1, pp. 63-71. ISSN 0716-078X.  http://dx.doi.org/10.4067/S0716-078X2009000100004.

The infracommunities of metazoan parasites in two congeneric and sympatric marine fish species, Scartichthys viridis (Valenciennes 1836) and Scartichthys gigas (Steindachner 1876), were studied and compared between three localities of the intertidal rocky shore off the coast of northern Chile, near Iquique (20°32' S, 70°11' W), which were separated by no more than 6 km. Samples were collected between August and September 2005. The goal of this study was to assess the variability in richness, abundance, diversity, dominance and parasite composition between close localities sampled within a short period. In all, 2,110 parasite individuals were collected from the 134 hosts examined, and 14 parasite taxa were identified. There was great similarity in the aggregated and compositional properties of the infracommunities, both between host species, as well as among study sites. We interpret these results as indicating that ecological factors such as habitat use and dietary composition, and evolutionary factors, such as the close relatedness between Scartichthys species are the main causes influencing the high similarity found in parasite communities of these fish species.

Palabras clave : parasite infracommunities; Scartichthys viridis; Scartichthys gigas; Chile.

        · resumen en Español     · texto en Español     · pdf en Español