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Role of conspecifics and personal experience on behavioral avoidance of contaminated flowers by bumblebees

Current Zoolog. 2019年第4期65卷 447-455页

作者： Bertrand Fouks emily g. robb H. Michael g. Lattorff lnstitut fur Biolog.e Molekulare Okologie Martin-Luther-Universitat Halle-Wittenberg Hoher Weg Halle (Saale) Germany Centre for Ecolog.cal and Evolutionary Synthesis (CEES) Department of Biosciences University of Oslo Oslo Norway Microbes and Pathog.ns Biolog. The Institute for Global Food Security School of Biological Sciences Queen's University Belfast United Kingdom lnternational Centre of Insect Physiolog. and Ecolog. (ICIPE) Nairobi Kenya g.rman Centre for Integ.ative Biodiversity Research (iDiv) Halle-Jena-Leipzig Deutscher Platz Leipzig Germany

Pollinators use multiple cues whilst forag.ng.in eluding.direct cues from flowers and in direct cues from other pollinators. The use of indirect social cues is common in social in sects, such as honeybees and bumblebees, where a social environment facilitates the ability to use such cues. Bumblebees use cues to forag. on flowers according.to previous forag.ng.experiences. Flowers are an essential food source for pollinators but also pose a hig. risk of parasite infection throug. the shared use of flowers leading.to parasite spillover. Nevertheless, bumblebees have evolved behavioral defense mechanisms to limit parasite infection by avoiding.contaminated flowers. Mechanisms underlying.the avoidance of contaminated flowers by bumblebees are poorly understood. Bumblebees were recorded having.the choice to forag. on non-contaminated flowers and flowers contaminated by a trypan osome g.t parasite, Crithidia bombi. The use of different treatments with presence or absence of con specifics on both con taminated and non-contami nated flowers allowed to investig.te the role of social visual cues on their pathog.n avoidance behavior. Bumblebees are expected to use social visual cues to avoid contaminated flowers. Our study reveals that the presence of a con specific on flowers either con taminated or not does not help bumblebee forag.rs avoiding.contaminated flowers. Nevertheless, bumblebees whereas g.ining.experie nee tend to avoid their con specific when placed on contami nated flower and copy it whe n on the non-contami nated flower. Our experime nt sug.ests a detrime ntal impact of floral see nt on disease avoidanee behavior.

关键词： Host-parasite in teractions social learning pollinators inadvertent social information behavioral immunity copying behavior

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