Resumen

HERNAEZ BOVE, Patricio. Production and reproductive output in Petrolisthes granulosus (Decapoda, Anomura, Porcellanidae) in different localities in the northern zone of Chile: A comparison latitudinal. Investig. mar. [online]. 2001, vol.29, n.1, pp. 73-81. ISSN 0717-7178.  doi: 10.4067/S0717-71782001000100007.

ABSTRACT. Ovigerous females of the porcellanid crab Petrolisthes granulosus were collected in the northern zone of Chile, to analyze latitudinal variations in their reproductive biology. Samples were taken from five localities situated between 18°33'S to 25°20'S. The average fecundity values for both locality and size strata, size of minimum sexual maturity, reproductive output and egg volume in the final stage of embryonic development, showed to have a tendency to the increase with the latitude. Though this result corroborate the latitudinal effect on the reproductive biology of P. granulosus, on the other hand, they contradict Thorson's (1936, 1950) and Clarke's (1987, 1992) arguments regarding latitudinal reproductive behavior

Palabras clave : latitude; reproductive biology; Petrolisthes; Chile.