A reversal in sensory processing accompanies ongoing ecological divergence and speciation in Rhagoletis pomonella
| Autor: | Daniel Kritsch, Jeffrey L. Feder, Andy Sombke, Shannon B. Olsson, Cheyenne Tait, Marco Schubert, Hinal Kharva, Jürgen Rybak |
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| Rok vydání: | 2021 |
| Předmět: |
0303 health sciences
Rhagoletis General Immunology and Microbiology Divergence (linguistics) Sensory processing biology Ecology Host (biology) medicine.medical_treatment General Medicine Reproductive isolation Olfaction biology.organism_classification General Biochemistry Genetics and Molecular Biology 03 medical and health sciences 0302 clinical medicine medicine.anatomical_structure Genetic algorithm medicine Antennal lobe General Agricultural and Biological Sciences 030217 neurology & neurosurgery 030304 developmental biology General Environmental Science |
| Zdroj: | Proceedings of the Royal Society B: Biological Sciences. 288 |
| ISSN: | 1471-2954 0962-8452 |
| Popis: | Changes in behaviour often drive rapid adaptive evolution and speciation. However, the mechanistic basis for behavioural shifts is largely unknown. The tephritid fruit fly Rhagoletis pomonella is an example of ecological specialization and speciation in action via a recent host plant shift from hawthorn to apple. These flies primarily use specific odours to locate fruit, and because they mate only on or near host fruit, changes in odour preference for apples versus hawthorns translate directly to prezygotic reproductive isolation, initiating speciation. Using a variety of techniques, we found a reversal between apple and hawthorn flies in the sensory processing of key odours associated with host fruit preference at the first olfactory synapse, linking changes in the antennal lobe of the brain with ongoing ecological divergence. Indeed, changes to specific neural pathways of any sensory modality may be a broad mechanism for changes in animal behaviour, catalysing the genesis of new biodiversity. |
| Databáze: | OpenAIRE |
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