Resumo

DE LOS RIOS, PATRICIO R  e  ZUNIGA, OSCAR. Biometric comparision of the frontal knob in american populations of Artemia (Anostraca, Artemiidae). Rev. chil. hist. nat. [online]. 2000, vol.73, n.1, pp. 31-38. ISSN 0716-078X.  doi: 10.4067/S0716-078X2000000100004.

The frontal knob diameter and its relationship with the total body lenght among populations of Artemia franciscana (Chile and U.S.A), A. persimilis (Argentina), and Artemia sp. (Chile), were asessed. All populations were cultured under laboratory conditions. Significant differences in both parameters between A. franciscana and Artemia sp. from Salina el Convento (Chile), and between A. persimilis and Artemia sp. from Amarga Lagoon (Chile) were recorded.Geographical, ecological and genetic aspects which affected the speciation of Artemia populations in Chile and Argentina, and their expression in morphometric characters are discussed

Palavras-chave : population; frontal knob; specie; morphometry.