S.R. Gil, A.G. Papeschi, R.G. Cohen-1998
Journal of Crustacean Biology, 18 (1) : 36-41 (from Current Contents)
Abstract:
Three populations of Artemia from La Pampa Province, Argentina, were cytogenetically analyzed: Salinas Grandes de Hidalgo, Laguna Callaqueo. and Laguna Colorada Chica. Both mitotic and male meiotic chromosomes were studied. All 3 populations share the same diploid (2n = 44) and/or haploid chromosome number (n = 22), and hence were determined as Artemia persimilis Piccinelli and Prosdocimi. Although bivalents decrease gradually in size, differences among the larger and the smaller ones were apparent. So far, no cytogenetic differences have been detected among the 3 populations. Chromosomes with metacentric, submetacentric, and telocentric morphology were detected in mitotic prometaphase cells, suggesting that chromosomes of Artemia may be monocentric.
(Univ. Buenos Aires, Fac. Ciencias Exactas and Nat. Dept. Ciencias Biol., Pabellon 2, Ciudad Univ., RA-1428 Buenos Aires, DF, Argentina)