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Updated: Aug 12, 2025

Evaluation of the Productivity of Social Wasp Colonies Vespinae and an Introduction to the Traditional Japanese Vespula Wasp Hunting Technique
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Unequal Reproduction Early in a Social Transition: Insights from Invasive Wasps.

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    This summary is machine-generated.

    In invasive yellowjackets, newly evolved multiple-queen (polygyne) colonies show reproductive asymmetry. A few queens monopolize reproduction, potentially exploiting nestmates in this social evolution study.

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    Area of Science:

    • Social insect behavior
    • Evolutionary biology
    • Population genetics

    Background:

    • Nestmate queens in eusocial insects can have unequal reproductive success, impacting mutual benefit distribution.
    • Understanding reproductive partitioning in incipiently polygynous species is crucial for studying the evolution of polygyny.

    Purpose of the Study:

    • To investigate reproductive effort and caste investment by queens in newly polygynous yellowjacket colonies.
    • To examine how reproductive success is partitioned among queens in a population with a recent transition to polygyny.

    Main Methods:

    • Excavation of nine polygyne *Vespula pensylvanica* colonies in Hawaii.
    • Restriction site-associated DNA sequencing to determine parentage of worker, male, and gyne pupae.
    • Analysis of offspring distribution and relatedness among nestmate queens.

    Main Results:

    • In four colonies, a single queen produced most or all gyne offspring, with no male or few worker offspring.
    • Gyne-producing queens showed non-random offspring distribution across nest combs.
    • Nestmate queens generally exhibited low relatedness.

    Conclusions:

    • Rapid, ecologically driven transitions to polygyny with unrelated queens can lead to reproductive asymmetries.
    • These asymmetries may be evolutionarily unstable, with some queens exploiting collective benefits.
    • The study reveals asymmetric reproduction in a population with newly evolved polygyny, raising questions about its future trajectory.