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- W4281738333 abstract "Abstract We performed a laboratory experiment on caged, domesticated Australian Zebra Finches (Taeniopygia guttata castanotis) to assess the effects of antimicrobial treatment applied to birds’ plumage on the feather microbial loads of breeding pairs and their associated reproductive performance. Treatments included an experimental group that experienced frequent misting with a broad-spectrum antimicrobial, as well as 2 control groups. Microbial loads (colony forming units [CFUs]) sampled from the belly feathers of breeders were higher posthatching than prehatching, and experimental pairs had lower loads (one-half to one-third the CFU counts) than controls at all sampled breeding-cycle stages. Clutch size and hatching success did not differ among treatments, but experimental pairs fledged nearly 50% more offspring (mean = 3.5 per clutch) than controls (mean = 2.3 per clutch) due to experiencing much lower nestling mortality. Offspring development rate, as assessed by one metric, varied among treatments: beak color score sampled midway in the development of adult phenotype revealed that offspring of experimental pairs had more rapid development. Findings imply that experimentally reduced density of feather microbial loads on breeders decreased reproductive costs in the posthatch phase, resulting in increased offspring survival and condition. At the time offspring fledged, uropygial gland volume tended to be greater among breeders that had experienced antimicrobial application throughout the breeding cycle. These results are consistent with a growing literature showing that the feather microbiome contributes significantly to the evolution of avian life histories and behavior and indicate that Zebra Finches are a useful laboratory model for investigating in vivo effects of the feather microbiome on avian hosts." @default.
- W4281738333 created "2022-06-13" @default.
- W4281738333 creator A5007479497 @default.
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- W4281738333 date "2022-06-01" @default.
- W4281738333 modified "2023-09-23" @default.
- W4281738333 title "Experimentally reduced feather microbial loads improve reproductive performance in captive Zebra Finches" @default.
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- W4281738333 doi "https://doi.org/10.1093/ornithology/ukac021" @default.