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Host plant-driven sensory specialization in Drosophila erecta

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons4023

Linz,  Jeanine
Department of Evolutionary Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society;
IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons49267

Baschwitz,  Amelie
Department of Evolutionary Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society;
IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons4403

Strutz,  Antonia
Department of Evolutionary Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society;
IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons71706

Dweck,  Hany
Department of Evolutionary Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society;
IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons4130

Sachse,  Silke
BMBF Research Group Dr. S. Sachse, Olfactory Coding, Department of Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons3909

Hansson,  Bill
Department of Evolutionary Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons4194

Stensmyr,  Marcus Carl
Department of Evolutionary Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society;

Externe Ressourcen
Volltexte (frei zugänglich)

HAN181.pdf
(Verlagsversion), 2MB

Ergänzendes Material (frei zugänglich)

HAN181s1.pdf
(Ergänzendes Material), 6MB

Zitation

Linz, J., Baschwitz, A., Strutz, A., Dweck, H., Sachse, S., Hansson, B., et al. (2013). Host plant-driven sensory specialization in Drosophila erecta. Proceedings of the Royal Society B: Biological Sciences, 280: 20130626. doi:10.1098/rspb.2013.0626.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000E-F3FB-1
Zusammenfassung
Finding appropriate feeding and breeding sites is crucial for all insects. To fulfil this vital task, many insects rely on their sense of smell. Alterations in the habitat—or in lifestyle—should accordingly also be reflected in the olfactory system. Solid functional evidence for direct adaptations in the olfactory system is however scarce. We have, therefore, examined the sense of smell of Drosophila erecta, a close relative of Drosophila melanogaster and specialist on screw pine fruits (Pandanus spp.). In comparison with three sympatric sibling species, D. erecta shows specific alterations in its olfactory system towards detection and processing of a characteristic Pandanus volatile (3-methyl-2- butenyl acetate, 3M2BA). We show that D. erecta is more sensitive towards this substance, and that the increased sensitivity derives from a numerical increase of one olfactory sensory neuron (OSN) class. We also show that axons from these OSNs form a complex of enlarged glomeruli in the antennal lobe, the first olfactory brain centre, of D. erecta. Finally, we show that 3M2BA induces oviposition in D. erecta, but not in D. melanogaster. The presumed adaptations observed here follow to a remarkable degree those found in Drosophila sechellia, a specialist upon noni fruit, and suggest a general principle for how specialization affects the sense of smell.