iScience (Sep 2022)

Behavioral innovation and genomic novelty are associated with the exploitation of a challenging dietary opportunity by an avivorous bat

  • Lixin Gong,
  • Yang Geng,
  • Zhiqiang Wang,
  • Aiqing Lin,
  • Huan Wu,
  • Lei Feng,
  • Zhenglanyi Huang,
  • Hui Wu,
  • Jiang Feng,
  • Tinglei Jiang

Journal volume & issue
Vol. 25, no. 9
p. 104973

Abstract

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Summary: Foraging on nocturnally migrating birds is one of the most challenging foraging tasks in the animal kingdom. Only three bat species (e.g., Ia io) known to date can prey on migratory birds. However, how these bats have exploited this challenging dietary niche remains unknown. Here, we demonstrate that I. io hunts at the altitude of migrating birds during the bird migration season. The foraging I. io exhibited high flight altitudes (up to 4945 m above sea level) and high flight speeds (up to 143.7 km h−1). I. io in flight can actively prey on birds in the night sky via echolocation cues. Genes associated with DNA damage repair, hypoxia adaptation, biting and mastication, and digestion and metabolism have evolved to adapt to this species’ avivorous habits. Our results suggest that the evolution of behavioral innovation and genomic novelty are associated with the exploitation of challenging dietary opportunities.

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