title: Clinal variation and selection on MDH allozymes in honeybees in Chile.
abstract: Evidence of clinal variation and selection on Mdh-1 locus was observed in 27 samples from 22 sites in a 2800 km north-south transect across Chile. We found a negative correlation among F allele normalized frequency and mean temperature, and minimum temperature of January and July, as well as a positive correlation among S allele normalized frequency and annual mean, and minimum January temperatures. Our results lend weight to the idea that Chilean honeybee populations of colder areas have higher F allele frequencies, supporting previous claims that Mdh-1 allozymes of Apis mellifera are subject to temperature-mediated selection.
authors.affiliation: Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brazil. dmdl@power.ufscar.br
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Del Lama
authors.forename: Rogério Oliveira
authors.initials: RO
authors.lastname: Souza
authors.forename: Ximena Andréa Araneda
authors.initials: XA
authors.lastname: Durán
authors.forename: Ademilson Espencer Egea
authors.initials: AE
authors.lastname: Soares
mesh_terms: D000483:Alleles; D000818:Animals; D001516:Bees / Q000201:enzymology* / Q000235:genetics*; D002677:Chile; D004272:DNA, Mitochondrial / Q000032:analysis; D005787:Gene Frequency; D014644:Genetic Variation; D005843:Geography; D007527:Isoenzymes; D008291:Malate Dehydrogenase / Q000235:genetics*; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D012621:Seasons; D012641:Selection, Genetic
chemical_list: D004272:DNA, Mitochondrial; D007527:Isoenzymes; D008291:Malate Dehydrogenase