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Drosophila avoids parasitoids by sensing their semiochemicals via a dedicated olfactory circuit

Title data

Ebrahim, Shimaa A.M. ; Dweck, Hany K.M. ; Stökl, Johannes ; Hofferberth, John ; Trona, Federica ; Weniger, Kerstin ; Rybak, Jürgen ; Seki, Yoichi ; Stensmyr, Marcus C. ; Sachse, Silke ; Hansson, Bill S. ; Knaden, Markus:
Drosophila avoids parasitoids by sensing their semiochemicals via a dedicated olfactory circuit.
In: PLoS Biology. Vol. 13 (2015) Issue 12 . - No. e1002318.
ISSN 1545-7885
DOI: https://doi.org/10.1371/journal.pbio.1002318

Abstract in another language

Detecting danger is one of the foremost tasks for a neural system. Larval parasitoids constitute clear danger to Drosophila, as up to 80% of fly larvae become parasitized in nature. We show that Drosophila melanogaster larvae and adults avoid sites smelling of the main parasitoid enemies, Leptopilina wasps. This avoidance is mediated via a highly specific olfactory sensory neuron (OSN) type. While the larval OSN expresses the olfactory receptor Or49a and is tuned to the Leptopilina odor iridomyrmecin, the adult expresses both Or49a and Or85f and in addition detects the wasp odors actinidine and nepetalactol. The information is transferred via projection neurons to a specific part of the lateral horn known to be involved in mediating avoidance. Drosophila has thus developed a dedicated circuit to detect a life-threatening enemy based on the smell of its semiochemicals. Such an enemy-detecting olfactory circuit has earlier only been characterized in mice and nematodes.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER147469
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Animal Ecology II - Evolutionary Animal Ecology > Chair Animal Ecology II - Evolutionary Animal Ecology - Univ.-Prof. Dr. Sandra Steiger
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: No
DDC Subjects: 500 Science
Date Deposited: 11 Apr 2019 12:49
Last Modified: 11 Apr 2019 12:49
URI: https://eref.uni-bayreuth.de/id/eprint/48345