Effects of Floral Scent, Color and Pollen on Foraging Decisions and Oocyte Development of Common Green Bottle Flies

• Published in: PloS one Vol. 10; no. 12; p. e0145055
• Main Authors: Brodie, Bekka S, Smith, Maia A, Lawrence, Jason, Gries, Gerhard
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 30.12.2015; Public Library of Science (PLoS)
• Subjects: Adonis; Amino acids; Animal behavior; Animals; Bacteria; Behavior; Blowflies; Calliphoridae; Carbohydrates; Carrion; Color; Cues; Culicidae; Decisions; Diet; Diptera; Diptera - physiology; Ecology; Feces; Feeding Behavior; Female; Females; Flies; Flowers; Flowers & plants; Flowers - physiology; Food; Forage; Forages; Foraging (Animal feeding behavior); Foraging behavior; Inflorescence - physiology; Laboratory experiments; Lucilia cuprina; Lucilia sericata; Maturation; Moisture; Moisture content; Nutrients; Odorants; Oocytes; Oocytes - cytology; Physiological aspects; Physiology; Plant nectar; Plant reproduction; Pollen; Pollen - physiology; Pollinators; Proteins; Smell - physiology; Studies; Sustainable development; Vision, Ocular - physiology
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0145055

The common green bottle fly Lucilia sericata (Meigen) and other filth flies frequently visit pollen-rich composite flowers such as the Oxeye daisy, Leucanthemum vulgare Lam. In laboratory experiments with L. sericata, we investigated the effect of generic floral scent and color cues, and of Oxeye daisy-specific cues, on foraging decisions by recently eclosed flies. We also tested the effect of a floral pollen diet with 0-35% moisture content on the ability of females to mature their oocytes. Our data indicate that (1) young flies in the presence of generic floral scent respond more strongly to a uniformly yellow cue than to any other uniform color cue (green, white, black, blue, red) except for ultraviolet (UV); (2) the floral scent of Oxeye daisies enhances the attractiveness of a yellow cue; and (3) moisture-rich pollen provides nutrients that facilitate ovary maturation of flies. With evidence that L. sericata exploits floral cues during foraging, and that pollen can be an alternate protein source to animal feces and carrion, Pollen apparently plays a major role in the foraging ecology of L. sericata and possibly other filth flies. These flies, in turn, may play a significant role as pollinators, as supported by a recently published study.