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Kin recognition and co-operative foraging in Drosophila melanogaster larvae.

Lucas Khodaei1, Tristan A F Long1

  • 1Department of Biology, Wilfrid Laurier University, Waterloo, ON, Canada.

Journal of Evolutionary Biology
|August 28, 2019
PubMed
Summary

Fruit fly larvae exhibit kin recognition, forming larger and more frequent feeding groups when near relatives are present. This cooperative behavior in Drosophila melanogaster suggests kinship influences social interactions and fitness benefits.

Keywords:
Drosophila melanogasteraltruismco-operationfeeding clustersgroup foragingkin selectionlarvaesocial behaviour

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Area of Science:

  • Evolutionary biology
  • Behavioral ecology
  • Genetics

Background:

  • Understanding the evolution of cooperation is a key biological and social science goal.
  • Drosophila melanogaster is a model organism for studying social behavior, but larval sociality is understudied.
  • Previous research on Drosophila melanogaster has primarily focused on adult behaviors.

Purpose of the Study:

  • To investigate group-feeding behavior in Drosophila melanogaster larvae.
  • To determine if relatedness influences the expression of cooperative feeding.
  • To explore kin recognition in larval fruit flies.

Main Methods:

  • Experiments involved manipulating the average relatedness of third-instar larvae under resource scarcity.
  • Assays measured the size, frequency, and composition of feeding clusters.
  • Fitness benefits associated with cooperative feeding were assessed.

Main Results:

  • Larval Drosophila melanogaster demonstrated kin recognition, forming more numerous and larger feeding clusters with related individuals.
  • Increased relatedness correlated with greater participation in feeding clusters.
  • Cooperative feeding behavior was mediated by the presence of kin.

Conclusions:

  • Larval Drosophila melanogaster exhibit kin recognition, a novel finding for this species.
  • Kinship plays a significant role in facilitating cooperative behavior in larval fruit flies.
  • Cooperation may provide correlated fitness benefits, with potential mechanisms for kin recognition.