Delicious poison: genetics of Drosophila host plant preference

Noah K. Whiteman, Naomi E. Pierce

Research output: Contribution to journalShort surveypeer-review

39 Scopus citations


Insects use chemical cues to identify host plants, which suggests that chemosensory perception could be a target of natural selection during host specialization. Five papers using data from the 12 recently sequenced Drosophila genomes examined chemosensory gene function and evolution across specialist and generalist species. A functional study identifies odorant binding proteins that mediate loss of toxin avoidance in a specialist, and targeted genomic studies indicate specialists and island endemics lose chemosensory genes more rapidly than generalist and mainland relatives. Together, these studies suggest a mode of chemoreceptor evolution dominated by birth/death dynamics, coupled with a low level of potential positive selection.

Original languageEnglish (US)
Pages (from-to)473-478
Number of pages6
JournalTrends in Ecology and Evolution
Issue number9
StatePublished - Sep 2008
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics


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