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Triploidy and mosaicism in Liolaemus chiliensis (Sauria: Tropiduridae)

Genome, ISSN: 0831-2796, Vol: 49, Issue: 5, Page: 445-453
2006
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Article Description

A remarkable diversity of ploidy, i.e., diploidy, triploidy, and diploid-triploid mosaicism, was found among the somatic and testicular cells in a natural population of the lizard Liolaemus chiliensis from central Chile. Intrapopulation, intersexual, and intraindividual ploidy variation is reported. In contrast with other species of polyploid reptiles, 86% of L. chiliensis males were mosaics (2n/3n) and 14% were diploids; 33% of females were triploid, 57.1% were mosaics, and 9.5% were diploid. Among 21 specimens, no triploid males were found in this sample. In the mosaic males, the diploid and triploid spermatogonia both enter meiosis, producing both reduced and unreduced metaphase II spermatocytes, most of them euploids. We discuss the origin for this ploidy in this iguanid lizard. © 2006 NRC.

Bibliographic Details

Madeleine Lamborot; M. E. Manzur; E. Alvarez-Sarret

Canadian Science Publishing

Biochemistry, Genetics and Molecular Biology

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