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  The olfactory coreceptor IR8a governs larval feces-mediated competition avoidance in a hawkmoth

Zhang, J., Bisch-Knaden, S., Fandino, R. A., Yan, S., Obiero, G. F., Grosse-Wilde, E., et al. (2019). The olfactory coreceptor IR8a governs larval feces-mediated competition avoidance in a hawkmoth. Proceedings of the National Academy of Sciences of the United States of America, 116(43), 21828-21833. doi:10.1073/pnas.1913485116.

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http://dx.doi.org/10.1073/pnas.1913485116 (Publisher version)
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 Creators:
Zhang, Jin1, Author           
Bisch-Knaden, Sonja1, Author           
Fandino, Richard A.2, Author           
Yan, Shuwei1, Author           
Obiero, George F.1, Author           
Grosse-Wilde, Ewald1, Author           
Hansson, Bill S.1, Author           
Knaden, Markus3, Author           
Affiliations:
1Department of Evolutionary Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society, ou_421894              
2Research Group Dr. M. Knaden, Insect Behavior, Department of Evolutionary Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society, ou_421913              
3Research Group Dr. M. Knaden, Insect Behavior, Department of Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society, ou_421913              

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 Abstract: Finding a suitable oviposition site is a challenging task for a gravid female moth. At the same time, it is of paramount importance considering the limited capability of most caterpillars to relocate to alternative host plants. The hawkmoth, Manduca sexta, oviposits on solanaceous plants. Larvae hatching on a plant that is already attacked by conspecific caterpillars face food competition. Here, we show that feces from conspecific caterpillars are sufficient to deter a female M. sexta from ovipositing on a plant. Furthermore, we not only identify the responsible compound in the feces but also localize the population of sensory neurons that governs the female’s avoidance. Hence, our work increases the understanding of how animals cope with a competitive environment.

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 Dates: 20192019-10-072019-10-22
 Publication Status: Published in print
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 Identifiers: Other: HAN339
DOI: 10.1073/pnas.1913485116
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Title: Proceedings of the National Academy of Sciences of the United States of America
  Other : Proc. Acad. Sci. USA
  Abbreviation : PNAS
Source Genre: Journal
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Publ. Info: Washington, D.C. : National Academy of Sciences
Pages: - Volume / Issue: 116 (43) Sequence Number: - Start / End Page: 21828 - 21833 Identifier: ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230