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Volume 4 Issue 12, December 2020

Wing origins

Wild-type (left) and CRISPR/Cas9-induced vestigial mutant (right) of the emerging model crustacean Parhyale hawaiensis. The vestigial mutant lacks both the edge of the dorsal body wall and structures associated with proximal leg segments, suggesting that both of these tissues qualify as crustacean tissues that could share ancestry with insect wings.

See Clark-Hachtel & Tomoyasu

Image: Courtney Clark-Hachtel. Cover Design: Lauren Heslop.


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Comment & Opinion

  • The pandemic will allow us to fundamentally remodel the way field-based sciences are taught, conducted and funded — but only if we stop waiting for a ‘return to normal’.

    • Eleanor M. L. Scerri
    • Denise Kühnert
    • Nicholas C. Vella
  • Insecticide use could be reduced if dose recommendations move from a toxicological perspective (how much is needed to kill an insect pest) to an ecological perspective (how much is needed to protect a crop).

    • Théotime Colin
    • Coline Monchanin
    • Andrew B. Barron
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News & Views

  • Global synchrony in tree growth shows a recent rapid rise tied to increasing temperature synchrony, which might alter global carbon sink dynamics.

    • Lara M. Kueppers
    News & Views
  • Two analyses of developmental patterning functions of leg and wing genes in a crustacean provide complementary support for the incorporation of proximal leg components into the body wall during the crustacean–insect transition, but lead to duelling models for which portion(s) re-emerged from the body as wings.

    • Frank W. Smith
    • Elizabeth L. Jockusch
    News & Views
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  • Systematic reviews are a powerful tool to synthesize large volumes of the published literature, but are susceptible to a number of methodological biases. Here, the authors outline mitigation strategies for improving the quality of evidence syntheses.

    • Neal R. Haddaway
    • Alison Bethel
    • Gavin B. Stewart
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Amendments & Corrections

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