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In the hymenopterans, haplodiploidy, leading to high-genetic relatedness amongst full sisters has been regarded as critical
to kin selection and inclusive fitness hypotheses that explain the evolution of eusociality and altruistic behaviours. Recent
evidence for independent origins of eusociality in phylogenetically diverse taxa has led to the controversy regarding the
general importance of relatedness to eusociality and its evolution. Here, we developed a highly polymorphic microsatellite
marker to test whether the eusocial ambrosia beetle Austroplatypus incompertus (Schedl) is haplodiploid or diplodiploid. We found that both males and females of A. incompertus are diploid, signifying that altruistic behaviour resulting from relatedness asymmetries did not play a role in the evolution
of eusocialty in this species. This provides additional evidence against the haplodiploidy hypothesis and implicates alternative
hypotheses for the evolution of eusociality. 相似文献
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