%0 Journal Article
%T Population cytogenetics of the "Northern Mod 1" chromosomal race of Liolaemus monticola M邦ller & Helmich (Iguanidae) from Central Chile Citogen谷tica poblacional de la raza cromos車mica "Norte mod 1" de Liolaemus monticola Muller & Helmich (Iguanidae) en Chile Central
%A Madeleine Lamborot
%A Carmen Gloria Ossa
%A Mauricio V芍squez
%J Gayana (Concepci車n)
%D 2012
%I Universidad de Concepci車n
%X We report the "Northern 2n=38-40, modification 1" race from three localities of the Liolaemus monticola complex in Chile that appears to be chromosomally and geographical intermediate between two previously described "Northern 2n=38-40" and "Multiple Fission, 2n=40-44 (MF)" races. This race retains the same "Northern" chromosomal features, but differs by being both polymorphic for an enlarged chromosome pair 6 and for a pericentric inversion in chromosome pair 7; these rearrangements are present in the "MF" race. At the population cytogenetics level, the mean proportion of polymorphic chromosomes in the "Northern, mod 1" race is relatively high and intermediate between the Northern" and "MF" races, while the chromosome "alleles" in the "Northern, mod 1" race deviate from the Hardy-Weinberg ratio higher than the aforementioned races. The Roger's distance between samples are in concordance with the chromosome races and the proposals barriers (The Colorado river and the Juncal river). The lowest chromosome "alleles" flux values (Nm) are between the chromosomal races, suggesting a low chromosomal introgression. These population cytogenetics patterns, plus the origin of the chromosomal rearrangements, and the recombination patterns resulting from chromosomal heterozygosity are compared with the situation of other populations of the "Northern" and the "MF" races previously described. We discuss the possible "Northern, mod 1" hybrid status in the evolution of this complex in central Chile. Reportamos la citogen谷tica poblacional de la raza "Norte 2n=38-40, modificada 1" para tres localidades del complejo de Liolaemus monticola en Chile, que resulta ser cromos車mica y geogr芍ficamente intermedia entre dos razas previamente descritas la "Norte, 2n=38-40" y la "M迆ltiple Fisiones, 2n=40-44 (MF)". Esta raza, retiene las mismas caracter赤sticas cromos車micas de la raza "Norte", pero difiere de 谷sta dada la condici車n polim車rfica para un cromosoma alargado del par 6 y una inversi車n peric谷ntrica del par cromos車mico 7, rearreglos que est芍n presentes en la raza "MF". A nivel citogen谷tico poblacional, la proporci車n promedio de los cromosomas polim車rficos en la raza "Northern, mod 1" is relativamente alta e intermedia entre las razas "Norte" y "MF", en tanto los "alelos" cromos車micos de la raza "Norte, mod 1" se desv赤an grandemente de los valores Hardy-Weinberg comparados a las razas antes mencionadas. Las distancias de Roger entre las muestra concuerdan con las razas cromos車micas y con las barreras propuestas (El R赤o Colorado y El R赤o Juncal). Los valores m芍s bajos de flujo ("
%K hibridizacion
%K Liolaemus monticola
%K raza cromos車mica "Norte Modificada 1
%K 2n = 38-40"
%K citogen谷tica poblacional
%K hybridization
%K Liolaemus monticola
%K "Northern modification 1
%K 2n = 38-40" chromosomal race
%K population cytogenetics
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382012000200002