PRELIMINARY CHARACTERIZATION OF SOME ARGENTINEAN ARTEMIA POPULATIONS FROM LA PAMPA AND BUENOS AIRES PROVINCES

R.G. Cohen, F. Amat, F. Hontoria, J.C. Navarro-1999

International Journal of Salt Lake Research, 8 (4): 329-340

Abstract:

Artemia populations were sampled in four hypersaline ecosystems in continental evaporitic basins from the Argentinean provinces of La Pampa and Buenos Aires. Biometrics of cysts and nauplii were performed. The morphometrics of adult females under standard culture conditions, studied by multivariate discriminant analysis, provided evidence that these populations belonged to the species A. persimilis; this was further supported by cross-breeding tests established between one of these populations (Salinas Grandes de Hidalgo, province of La Pampa) and a population of A. franciscana from San Francisco Bay (California, USA), which showed reproductive isolation and barriers to gene flow between both populations.

(Departemento de Ciencias Biologicas, Facultad de Ciencias Exactas y Naturales, Unversidad de Buenos Aires, Buenos Aires, Argentina)

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