Ancestral Monogamy Shows Kin Selection Is Key to the Evolution of Eusociality

  title={Ancestral Monogamy Shows Kin Selection Is Key to the Evolution of Eusociality},
  author={William O. H. Hughes and Benjamin P. Oldroyd and Madeleine Beekman and Francis L. W. Ratnieks},
  pages={1213 - 1216}
Close relatedness has long been considered crucial to the evolution of eusociality. [] Key Method We tested this idea with a comparative analysis of female mating frequencies in 267 species of eusocial bees, wasps, and ants. We found that mating with a single male, which maximizes relatedness, is ancestral for all eight independent eusocial lineages that we investigated. Mating with multiple males is always derived. Furthermore, we found that high polyandry (>2 effective mates) occurs only in lineages whose…
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Life History and the Transitions to Eusociality in the Hymenoptera
  • J. da Silva
  • Biology
    Frontiers in Ecology and Evolution
  • 2021
In this study, ancestral state reconstruction on recently published phylogenies was used to identify the independent transitions to eusociality in each of the taxonomic families that exhibit eussociality.
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Convergent Reversion to Single Mating in a Wasp Social Parasite
It is shown that the workerless social parasite Dolichovespula arctica, a derived parasite of wasps, has reverted to obligate single mating from a facultatively polyandrous ancestor, mirroring a similar reversion from obligate polyandry to approximate monandry in a social parasite of fungus-farming ants.
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Pedigree relatedness, not greenbeard genes, explains eusociality
It is concluded that both phylogenetic studies and studies of intra-genomic conflict support the importance of pedigree relatedness in the evolution of eusociality.
Recent and simultaneous origins of eusociality in halictid bees
Results from relaxed molecular clock dating techniques indicate that the three independent origins of eusociality in halictid bees occurred within a narrow time frame between approximately 20 and 22 Myr ago, suggesting that climate may have had an important role in the evolution and maintenance of eusociality in these bees.
High relatedness and inbreeding at the origin of eusociality in gall-inducing thrips.
Results indicate that unusually high relatedness is associated with the origin of eusociality, and they suggest a role for inbreeding in the evolution of bisexual helping.
One Giant Leap: How Insects Achieved Altruism and Colonial Life
Several lines of evidence are examined, examined here, suggest that collateral kin selection does not play a significant role in the approach to eusociality in the Hymenoptera and that group selection immediately acts on key emergent traits arising from interactions of the group members.
Ant parasite queens revert to mating singly
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Eusociality: origin and consequences.
In this new assessment of the empirical evidence, an alternative to the standard model is proposed: group selection is the strong binding force in eusocial evolution; individual selection, the strong
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A phylogeny of Vespidae based on data from four nuclear gene fragments and representatives from all six extant subfamilies indicates two independent origins of vespid eusociality, once in the clade Polistinae+Vespinae andonce in the Stenogastrinae.