Abstract
Production of diploid males is disadvantageous for populations of haplodiploid species, because it increases the genetic load and decreases fitness. In social species, the damage becomes more serious because of increased colony mortality and decreased colony growth rates. As a parameter to quantify diploid male production, the proportion of diploids that are males, \(\Phi\), has been estimated using multiple-loci marker genotypes. In these studies, \(\Phi\) is separately estimated for individual marker locus, and then the estimates are averaged over marker loci. In this paper, we propose a simple method for combining genotypes of multiple-marker loci to obtain a single estimate of \(\Phi\), which is expected to enhance the quality of estimate. As an application, \(\Phi\) in a threatened bumble bee population in Japan is estimated from genotype data of multiple microsatellite loci. Under the separate analysis of individual marker locus the detectability of diploid males, measured by the probability that a diploid is heterozygous, is within the range of 0.196–0.554, whereas the detectability from the proposed method increases to 0.834, giving an estimate of \(\Phi\) with a higher degree of precision.
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This work was supported by JSPS KAKENHI Grant Number 17H03953.
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Nomura, T., Taniguchi, Y. Simple method for combining multiple-loci marker genotypes to estimate diploid male proportion, with an application to a threatened bumble bee population in Japan. Insect. Soc. 70, 141–147 (2023). https://doi.org/10.1007/s00040-022-00895-z
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DOI: https://doi.org/10.1007/s00040-022-00895-z