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Blowfly Trypocalliphora braueri (Diptera: Calliphoridae) larvae infestation in willow warblers Phylloscopus trochilus breeding in a hybrid zone.

Åkesson, Susanne LU ; Bensch, Staffan LU ; Hedenström, Anders LU and Irwin, Darren LU (2002) In Ornis Svecica 12(1-2). p.83-88
Abstract
We examined the occurrence of blowfly larvae Trypocalliphora brauneri in Swedish willow warbler Phylloscopus trochilus nestlings at three nearby breeding sites in Central Sweden. The occurrence of parasites was examined in nestlings by visual inspection during ringing. Larvae were encapsulated in the wings, head, neck, or the sides of the body of the nestlings and caused large swellings. Some of the larvae had already left the site of burrowing by an opening in the skin that was visible as a dark crater surrounded by dry skin. Tissue near the encapsulated larvae was swollen and showed clear symptoms of inflammation, in some cases causing deformation of wings. We observed parasites at two of the three sites in 5 out of a total of 36 nests (... (More)
We examined the occurrence of blowfly larvae Trypocalliphora brauneri in Swedish willow warbler Phylloscopus trochilus nestlings at three nearby breeding sites in Central Sweden. The occurrence of parasites was examined in nestlings by visual inspection during ringing. Larvae were encapsulated in the wings, head, neck, or the sides of the body of the nestlings and caused large swellings. Some of the larvae had already left the site of burrowing by an opening in the skin that was visible as a dark crater surrounded by dry skin. Tissue near the encapsulated larvae was swollen and showed clear symptoms of inflammation, in some cases causing deformation of wings. We observed parasites at two of the three sites in 5 out of a total of 36 nests ( 14%) in two years, corresponding to 20 (9.6%) out of 208 nestlings inspected. In nests with parasites 74.1% of the chicks were infested, each containing one to five parasites. No nestlings were found dead in the nests at the date of inspection. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Ornis Svecica
volume
12
issue
1-2
pages
83 - 88
publisher
Sveriges Ornitologiska Förening
external identifiers
  • scopus:0036063999
ISSN
1102-6812
language
English
LU publication?
yes
id
124b1314-468f-41de-867e-674273158b82 (old id 149946)
date added to LUP
2007-06-25 11:23:01
date last changed
2017-01-01 06:50:17
@article{124b1314-468f-41de-867e-674273158b82,
  abstract     = {We examined the occurrence of blowfly larvae Trypocalliphora brauneri in Swedish willow warbler Phylloscopus trochilus nestlings at three nearby breeding sites in Central Sweden. The occurrence of parasites was examined in nestlings by visual inspection during ringing. Larvae were encapsulated in the wings, head, neck, or the sides of the body of the nestlings and caused large swellings. Some of the larvae had already left the site of burrowing by an opening in the skin that was visible as a dark crater surrounded by dry skin. Tissue near the encapsulated larvae was swollen and showed clear symptoms of inflammation, in some cases causing deformation of wings. We observed parasites at two of the three sites in 5 out of a total of 36 nests ( 14%) in two years, corresponding to 20 (9.6%) out of 208 nestlings inspected. In nests with parasites 74.1% of the chicks were infested, each containing one to five parasites. No nestlings were found dead in the nests at the date of inspection.},
  author       = {Åkesson, Susanne and Bensch, Staffan and Hedenström, Anders and Irwin, Darren},
  issn         = {1102-6812},
  language     = {eng},
  number       = {1-2},
  pages        = {83--88},
  publisher    = {Sveriges Ornitologiska Förening},
  series       = {Ornis Svecica},
  title        = {Blowfly Trypocalliphora braueri (Diptera: Calliphoridae) larvae infestation in willow warblers Phylloscopus trochilus breeding in a hybrid zone.},
  volume       = {12},
  year         = {2002},
}