Javascript is not activated in your browser. This website needs javascript activated to work properly.
You are here

Temporal patterns of occurrence and transmission of the blood parasite Haemoproteus payevskyi in the great reed warbler Acrocephalus arundinaceus

  • Dennis Hasselquist
  • Orjan Ostman
  • Jonas Waldenström
  • Staffan Bensch
Publishing year: 2007
Language: English
Pages: 401-409
Publication/Series: Journal für Ornithologie
Volume: 148
Issue: 4
Document type: Journal article
Publisher: Springer

Abstract english

We studied the prevalence and intensity of the haemosporidian blood parasite Haemoproteus payevskyi in great reed warblers at Lake Kvismaren (6 years) and Lake Segersjo (3 years) in Sweden. Based on microscopic inspection of slides from 282 adult birds, 20.6% showed infection of H. payevskyi in circulating red blood cells in at least 1 year. For parasite prevalence, there was no difference between years, sex, and age classes. However, parasite intensity was higher in females than in males, and this was most pronounced in 1-year-old birds. Individuals scored to carry parasites in year (n) were more likely to show parasite infection year (n + 1) than birds scored to be parasite-free in year (n) . None of 99 juvenile birds examined at the breeding site in late summer, 4-9 weeks after hatching, showed infection of H. payevskyi. Parasite intensity in infected adult birds decreased in the course of the breeding season and no new or relapse infections were observed during this period. Thus, our data imply that in the great reed warbler, a long-distance migrant to tropical Africa, transmission of H. payevskyi occurs on wintering sites or at stopover sites during migration.


  • Biological Sciences
  • long-distance migration
  • Acrocephalus arundinaceus
  • parasite transmission
  • avian malaria
  • host-parasite interactions


  • Long-term study of great reed warblers
  • Malaria in birds
  • Molecular Ecology and Evolution Lab
  • ISSN: 1439-0361
Dennis Hasselquist
E-mail: dennis [dot] hasselquist [at] biol [dot] lu [dot] se



+46 46 222 37 08



Research group


Doctoral students and postdocs

Research fellows


PhD Students, main supervisor

PhD Students, assistant supervisor


Interview about my research in the Swedish podcast "Forskarn & jag"