title: Pathogen-induced food evasion behavior inDrosophilalarvae.
abstract: Recognizing a deadly pathogen and generating an appropriate immune reaction is essential for any organism to survive in its natural habitat. Unlike vertebrates and higher primates, invertebrates depend solely on the innate immune system to defend themselves from an attacking pathogen. In this study, we report a behavioral defense strategy observed inDrosophilalarvae that helps them escape and limit an otherwise lethal infection. A bacterial infection in the gut is sensed by the larval central nervous system, which generates an alteration in the larva's food preference, leading it to stop feeding and move away from the infectious food source. We have also found that this behavioral response is dependent on the internal nutritive state of the larvae. Using this novel behavioral assay as a read-out, we further identified hugin neuropeptide to be involved in the evasion response and detection of bacterial signals.
authors.affiliation: Department of Molecular Brain Physiology, LIMES Institute, University of Bonn, Carl Troll Strasse 31, Bonn 53115, Germany.
authors.forename: Sandya
authors.initials: S
authors.lastname: Surendran
authors.affiliation: Department of Molecular Brain Physiology, LIMES Institute, University of Bonn, Carl Troll Strasse 31, Bonn 53115, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Hückesfeld
authors.affiliation: Department of Molecular Brain Physiology, LIMES Institute, University of Bonn, Carl Troll Strasse 31, Bonn 53115, Germany.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Wäschle
authors.affiliation: Department of Molecular Brain Physiology, LIMES Institute, University of Bonn, Carl Troll Strasse 31, Bonn 53115, Germany pankratz@uni-bonn.de.
authors.forename: Michael J
authors.identifier: 0000-0001-5458-6471
authors.initials: MJ
authors.lastname: Pankratz
mesh_terms: D000818:Animals; D029721:Drosophila Proteins / Q000378:metabolism; D004331:Drosophila melanogaster / Q000382:microbiology*; D005247:Feeding Behavior; D005518:Food Preferences; D055809:Illness Behavior; D007814:Larva / Q000382:microbiology; D008124:Locomotion; D009479:Neuropeptides / Q000378:metabolism; D011549:Pseudomonas / Q000235:genetics; D011552:Pseudomonas Infections; D013217:Starvation
chemical_list: D029721:Drosophila Proteins; C515386:Hug protein, Drosophila; D009479:Neuropeptides
keywords: Feeding; Hugin neuropeptide; Infection behavior