TY - JOUR
T1 - Extreme chromosomal polytypy in a population of sceloporus grammicus (sauria: phrynosomatidae) at santuario mapethé, Hidalgo, México
AU - Goyenechea, Irene
AU - Mendoza-Quijano, Fernando
AU - Flores-Villela, Oscar
AU - Reed, Kent M.
PY - 1996
Y1 - 1996
N2 - The karyotypic status of the mesquite lizard, Sceloporus grammicas, was investigated at two localities at Saniuario Mapethé, Hidalgo, México. A total of 23 different karyotypes was recorded from the 36 individuals examined. Individual lizards were heterozygous at up to four chromosomes. Karyotypic differences were attributed to Robertsonian fission/fusions and pericentric inversions involving the macrochromosomes. The polymorphisms generally conformed to Hardy-Weinberg equilibrium suggesting a lack of underdominance for most rearrangements. The extreme chromosomal polytypy observed at Santuario Mapethé is hypothesized to result from parapatric hybridization between two chromosome races.
AB - The karyotypic status of the mesquite lizard, Sceloporus grammicas, was investigated at two localities at Saniuario Mapethé, Hidalgo, México. A total of 23 different karyotypes was recorded from the 36 individuals examined. Individual lizards were heterozygous at up to four chromosomes. Karyotypic differences were attributed to Robertsonian fission/fusions and pericentric inversions involving the macrochromosomes. The polymorphisms generally conformed to Hardy-Weinberg equilibrium suggesting a lack of underdominance for most rearrangements. The extreme chromosomal polytypy observed at Santuario Mapethé is hypothesized to result from parapatric hybridization between two chromosome races.
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U2 - 10.2307/1564704
DO - 10.2307/1564704
M3 - Article
AN - SCOPUS:0030435640
SN - 0022-1511
VL - 30
SP - 39
EP - 46
JO - Journal of Herpetology
JF - Journal of Herpetology
IS - 1
ER -