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Temporal and spatial variation of hematozoans in Scandinavian willow warblers

Bensch, Staffan LU and Åkesson, Susanne LU (2003) In Journal of Parasitology 89(2). p.388-391
Abstract
We examined temporal and geographical distribution of Haemoproteus sp. and Plasmodium sp. parasites in Swedish willow warblers, Phylloscopus trochilus. Parasite lineages were detected with molecular methods in 556 birds from 41 sites distributed at distances up to 1,500 km. Two mitochondrial lineages of Haemoproteus sp. were detected, WW1 in 56 birds and WW2 in 75 birds, that differed by 5.2% sequence divergence. We discuss the reasons behind the observed pattern of variation and identify 3 possible causes: (1) variation in the geographic distribution of the vector species, (2) the degree of parasite sharing with other bird species coexisting with the willow warbler, and (3) timing of transmission. Our results support a fundamental and... (More)
We examined temporal and geographical distribution of Haemoproteus sp. and Plasmodium sp. parasites in Swedish willow warblers, Phylloscopus trochilus. Parasite lineages were detected with molecular methods in 556 birds from 41 sites distributed at distances up to 1,500 km. Two mitochondrial lineages of Haemoproteus sp. were detected, WW1 in 56 birds and WW2 in 75 birds, that differed by 5.2% sequence divergence. We discuss the reasons behind the observed pattern of variation and identify 3 possible causes: (1) variation in the geographic distribution of the vector species, (2) the degree of parasite sharing with other bird species coexisting with the willow warbler, and (3) timing of transmission. Our results support a fundamental and rarely tested assumption of the now classical Hamilton-Zuk hypothesis of sexual selection, namely, that these parasites vary in both time and space. Such fluctuations of parasites and the selection pressure they Supposedly impose on the host population are likely to maintain variation in immune system genes in the host population. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Parasitology
volume
89
issue
2
pages
388 - 391
publisher
American Society of Parasitologists
external identifiers
  • wos:000182535500031
  • scopus:0037396436
ISSN
0022-3395
language
English
LU publication?
yes
id
fe1e658a-8260-497c-801e-5b12add136b8 (old id 137335)
alternative location
http://www.bioone.org/bioone/?request=get-abstract&issn=0022-3395&volume=089&issue=02&page=0388
date added to LUP
2007-06-25 11:24:22
date last changed
2018-05-29 12:30:32
@article{fe1e658a-8260-497c-801e-5b12add136b8,
  abstract     = {We examined temporal and geographical distribution of Haemoproteus sp. and Plasmodium sp. parasites in Swedish willow warblers, Phylloscopus trochilus. Parasite lineages were detected with molecular methods in 556 birds from 41 sites distributed at distances up to 1,500 km. Two mitochondrial lineages of Haemoproteus sp. were detected, WW1 in 56 birds and WW2 in 75 birds, that differed by 5.2% sequence divergence. We discuss the reasons behind the observed pattern of variation and identify 3 possible causes: (1) variation in the geographic distribution of the vector species, (2) the degree of parasite sharing with other bird species coexisting with the willow warbler, and (3) timing of transmission. Our results support a fundamental and rarely tested assumption of the now classical Hamilton-Zuk hypothesis of sexual selection, namely, that these parasites vary in both time and space. Such fluctuations of parasites and the selection pressure they Supposedly impose on the host population are likely to maintain variation in immune system genes in the host population.},
  author       = {Bensch, Staffan and Åkesson, Susanne},
  issn         = {0022-3395},
  language     = {eng},
  number       = {2},
  pages        = {388--391},
  publisher    = {American Society of Parasitologists},
  series       = {Journal of Parasitology},
  title        = {Temporal and spatial variation of hematozoans in Scandinavian willow warblers},
  volume       = {89},
  year         = {2003},
}