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Sibling Species in Artemia (Crustacea:Branchiopoda)
A. M. Halfer-Cervini, M. Piccinelli, T. Prosdocimi and L. Baratelli-Zambruni
Vol. 22, No. 2 (Jun., 1968), pp. 373-381
Published by: Society for the Study of Evolution
Stable URL: http://www.jstor.org/stable/2406535
Page Count: 9
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The purpose of the present paper is to analyze the causes of sterility in crosses between two sympatric forms of Artemia salina, one of which predominates in the salt ponds of San Bartolomeo (Sardinia, Italy), and the other in those of Hidalgo (Argentina). The two forms are slightly different in some morphological and developmental characters. It has been found that one of the forms (common in Cagliari) has a normal chromosome number of 42, and therefore is the typical Artemia salina (L.); the other, Artemia persimilis Piccinelli and Prosdocimi, has 44 chromosomes of smaller size, and is thus to be considered heteroploid in respect of the former. The two forms are thus sibling species.
Evolution © 1968 Society for the Study of Evolution