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Circannual variation in blood parasitism in a sub-Saharan migrant passerine bird, the garden warbler

Hellgren, Olof LU ; Wood, M J; Waldenström, Jonas LU ; Hasselquist, Dennis LU ; Ottosson, Ulf LU ; Stervander, Martin LU and Bensch, Staffan LU (2013) In Journal of evolutionary biology 26(5). p.1047-1059
Abstract
Knowing the natural dynamics of pathogens in migratory birds is important, for example, to understand the factors that influence the transport of pathogens to and their transmission in new geographical areas, whereas the transmission of other pathogens might be restricted to a specific area. We studied haemosporidian blood parasites of the genera Plasmodium, Haemoproteus and Leucocytozoon in a migratory bird, the garden warbler Sylvia borin. Birds were sampled in spring, summer and early autumn at breeding grounds in Sweden, on migration at Capri, Italy and on arrival and departure from wintering staging areas in West Africa: mapping recoveries of garden warblers ringed in Fennoscandia and Capri showed that these sites are most probably on... (More)
Knowing the natural dynamics of pathogens in migratory birds is important, for example, to understand the factors that influence the transport of pathogens to and their transmission in new geographical areas, whereas the transmission of other pathogens might be restricted to a specific area. We studied haemosporidian blood parasites of the genera Plasmodium, Haemoproteus and Leucocytozoon in a migratory bird, the garden warbler Sylvia borin. Birds were sampled in spring, summer and early autumn at breeding grounds in Sweden, on migration at Capri, Italy and on arrival and departure from wintering staging areas in West Africa: mapping recoveries of garden warblers ringed in Fennoscandia and Capri showed that these sites are most probably on the migratory flyway of garden warblers breeding at Kvismaren. Overall, haemosporidian prevalence was 39%, involving 24 different parasite lineages. Prevalence varied significantly over the migratory cycle, with relatively high prevalence of blood parasites in the population on breeding grounds and at the onset of autumn migration, followed by marked declines in prevalence during migration both on spring and autumn passage. Importantly, we found that when examining circannual variation in the different lineages, significantly different prevalence profiles emerged both between and within genera. Our results suggest that differences in prevalence profiles are the result of either different parasite transmission strategies or coevolution between the host and the various parasite lineages. When separating parasites into common vs. rare lineages, we found that two peaks in the prevalence of rare parasites occur; on arrival at Swedish breeding grounds, and after the wintering period in Africa. Our results stress the importance of appropriate taxonomic resolution when examining host-parasite interactions, as variation in prevalence both between and within parasite genera can show markedly different patterns. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
annual prevalence, bird migration, Haemoproteus, Leucocytozoon, Plasmodium, Sylvia borin
in
Journal of evolutionary biology
volume
26
issue
5
pages
1047 - 1059
publisher
John Wiley & Sons
external identifiers
  • wos:000318291900012
  • pmid:23621369
  • scopus:84876962130
ISSN
1420-9101
DOI
10.1111/jeb.12129
project
Malaria in birds
CAnMove
BECC
language
English
LU publication?
yes
id
8b11957f-a1f8-400f-bf2c-6d34813c302b (old id 3733310)
date added to LUP
2013-05-14 15:23:36
date last changed
2019-10-16 01:04:19
@article{8b11957f-a1f8-400f-bf2c-6d34813c302b,
  abstract     = {Knowing the natural dynamics of pathogens in migratory birds is important, for example, to understand the factors that influence the transport of pathogens to and their transmission in new geographical areas, whereas the transmission of other pathogens might be restricted to a specific area. We studied haemosporidian blood parasites of the genera Plasmodium, Haemoproteus and Leucocytozoon in a migratory bird, the garden warbler Sylvia borin. Birds were sampled in spring, summer and early autumn at breeding grounds in Sweden, on migration at Capri, Italy and on arrival and departure from wintering staging areas in West Africa: mapping recoveries of garden warblers ringed in Fennoscandia and Capri showed that these sites are most probably on the migratory flyway of garden warblers breeding at Kvismaren. Overall, haemosporidian prevalence was 39%, involving 24 different parasite lineages. Prevalence varied significantly over the migratory cycle, with relatively high prevalence of blood parasites in the population on breeding grounds and at the onset of autumn migration, followed by marked declines in prevalence during migration both on spring and autumn passage. Importantly, we found that when examining circannual variation in the different lineages, significantly different prevalence profiles emerged both between and within genera. Our results suggest that differences in prevalence profiles are the result of either different parasite transmission strategies or coevolution between the host and the various parasite lineages. When separating parasites into common vs. rare lineages, we found that two peaks in the prevalence of rare parasites occur; on arrival at Swedish breeding grounds, and after the wintering period in Africa. Our results stress the importance of appropriate taxonomic resolution when examining host-parasite interactions, as variation in prevalence both between and within parasite genera can show markedly different patterns.},
  author       = {Hellgren, Olof and Wood, M J and Waldenström, Jonas and Hasselquist, Dennis and Ottosson, Ulf and Stervander, Martin and Bensch, Staffan},
  issn         = {1420-9101},
  keyword      = {annual prevalence,bird migration,Haemoproteus,Leucocytozoon,Plasmodium,Sylvia borin},
  language     = {eng},
  number       = {5},
  pages        = {1047--1059},
  publisher    = {John Wiley & Sons},
  series       = {Journal of evolutionary biology},
  title        = {Circannual variation in blood parasitism in a sub-Saharan migrant passerine bird, the garden warbler},
  url          = {http://dx.doi.org/10.1111/jeb.12129},
  volume       = {26},
  year         = {2013},
}