• Publications
  • Influence
Sexual conflict over nuptial gifts in insects.
  • D. Gwynne
  • Biology, Medicine
    Annual review of entomology
  • 2008
TLDR
Comparison, experimental, and natural history evidence reveal that most edible gifts of prey or glandular products provide direct benefits to females, and points out the difficulties in determining that female remating rates are suboptimal.
Phylogeny of the Ensifera (Orthoptera): A Hypothesis Supporting Multiple Origins of Acoustical Signalling, Complex Spermatophores and Maternal Care in Crickets, Katydids, and Weta
TLDR
Numerical analyses of orthopteroid insects indicate that the Ensifera is a natural group as taxa in this suborder appear to form a separate clade (monophyletic group) in both cladistic and phe- netic analyses.
Inclusive fitness theory and eusociality
TLDR
It is argued that inclusive fitness theory has been of little value in explained the natural world, and that it has led to negligible progress in explaining the evolution of eusociality, but these arguments are based upon a misunderstanding of evolutionary theory and a misrepresentation of the empirical literature.
Katydids and Bush-Crickets : Reproductive Behavior and Evolution of the Tettigoniidae
OUR APPRECIATION OF biological diversity owesmuch to the collective efforts of a special cadre of scientists who become thoroughly captivated by particular organisms, recognize those central issues
Courtship feeding increases female reproductive success in bushcrickets
TLDR
Results are reported of an experiment which shows that feeding on the spermatophore enhances the reproductive success of female bushcrickets by increasing the numbers and size of eggs produced.
Sex-biased predation and the risky mate-locating behaviour of male tick-tock cicadas (Homoptera: Cicadidae)
  • D. Gwynne
  • Biology
    Animal Behaviour
  • 1 April 1987
TLDR
In this study, web-building spiders captured more male than female tick-tock cicadas, Cicadetta quadricincta, due to a male-biased adult sex ratio but instead appeared to be a consequence of mate-seeking activities.
COURTSHIP FEEDING AND THE FITNESS OF FEMALE KATYDIDS (ORTHOPTERA: TETTIGONIIDAE)
  • D. Gwynne
  • Biology, Medicine
    Evolution; international journal of organic…
  • 1 May 1988
TLDR
Katydid males (Requena verticalis) produce spermatophores with a large sperm‐free sperMatophylax, which is eaten by the female after mating, and this male‐produced food substitute for other food in the diet of the female or is it a source of specialized nutrients.
Courtship Feeding in Katydids (Orthoptera: Tettigoniidae): Investment in Offspring or in Obtaining Fertilizations?
  • D. Gwynne
  • Biology
    The American Naturalist
  • 1 September 1986
TLDR
The hypothesis that the function of "excess" maledonated nutrition is mating effort that protects the ejaculate is rejected and courtship feeding in R. verticalis may represent parental effort whereby males invest in their own zygotes.
Condition Dependence of Male Life Span and Calling Effort in a Field Cricket
TLDR
These findings suggest that male quality and survival are positively correlated, but more tests of this hypothesis are needed.
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