Clinal variation and selection on MDH allozymes in honeybees in Chile
Related Experiment Video
Updated: Aug 25, 2026

Methods for Comparing Nutrients in Beebread Made by Africanized and European Honey Bees and the Effects on Hemolymph Protein Titers
Published on: March 17, 2015
Marco Antonio Del Lama1, Rogério Oliveira Souza, Ximena Andréa Araneda Durán
1Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brazil. dmdl@power.ufscar.br
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.
Related Concept Videos
Types of Selection
Frequency-dependent Selection
Mutation, Gene Flow, and Genetic Drift
Hybrid Zones
Chi-square Analysis
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
Position-effect Variegation

