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dc.creatorLAMBOROT,MADELEINE
dc.date2001-03-01
dc.date.accessioned2019-11-14T12:52:19Z
dc.date.available2019-11-14T12:52:19Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000000017
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/115326
dc.descriptionChromosomal genotypes were scored from 359 Liolaemus monticola lizards of the "northern, 2n = 38-40" chromosomal race from 21 locality samples between the Maipo (and one of its tributaries) and the Aconcagua (and one of its tributaries) ribers, plus a sample from the interracial hybridization zone, and some representative locality samples of the "southern 2n = 34" and the "multiple fission 2n = 42-44" chromosomal races for comparisons. The first seven variable chromosomal pairs were coded as Mendelian genotypes and statistically summarized by several clustering and population genetic algorithms. Spatial and temporal differentiation was assessed by chromosome frequencies, chromosomal diversity and heterozygosity. While no differentiation was found for diversity in the "northern 2n = 38-40" race, chromosomal frequencies and heterozygosity showed significant spatial differentiation that permit distinguishing between the coastal, Andean and transversal mountain range populations. The sample of Cuesta Chacabuco may represent a hybrid zone between the other two range samples. The origin of the chromosomal rearrangements, the population cytogenetics, and the recombination patterns resulting from chromosomal heterozygosity are compared in these chromosomal races, thus expanding the geographical area. These patterns are discussed with respect to the evolution of this complex in Chile and the importance of the riverine barriers in central Chile
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dc.languageen
dc.publisherSociedad de Biología de Chile
dc.relation10.4067/S0716-078X2001000000017
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceRevista chilena de historia natural v.74 n.1 2001
dc.subjectIguanidae
dc.subjectLiolaernus monticola
dc.subjectchromosomal races
dc.subject"northern 2n = 38-40" chromosomal race
dc.subjectpopulation structure
dc.subjectspeciation
dc.titleKaryotypic polymorphism and evolution within and between the Liolaemus monticola (Iguanidae) "northern 2n = 38-40" chromosome race populations in central Chile


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