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Evolution of seasonal transmission patterns in avian blood-borne parasites

Perez-Rodriguez, Anton; de la Hera, Ivan; Bensch, Staffan LU and Perez-Tris, Javier (2015) In International Journal for Parasitology 45(9-10). p.605-611
Abstract
In temperate regions, many vector-borne parasites maximise their transmission prospects by adjusting reproduction to seasonal cycles of host susceptibility and vector availability. Nevertheless, in these regions there are areas where environmental conditions are favourable throughout the year, so that parasites could benefit from a year-round transmission strategy. We analysed how different transmission strategies (strict summer transmission, extended summer transmission - including spring and autumn, and year round transmission) have evolved among the different genetic lineages of Haemoproteus parabelopolskyi, an avian blood-borne parasite shared by three sibling species of passerine hosts. Our results indicate that the ancestral state of... (More)
In temperate regions, many vector-borne parasites maximise their transmission prospects by adjusting reproduction to seasonal cycles of host susceptibility and vector availability. Nevertheless, in these regions there are areas where environmental conditions are favourable throughout the year, so that parasites could benefit from a year-round transmission strategy. We analysed how different transmission strategies (strict summer transmission, extended summer transmission - including spring and autumn, and year round transmission) have evolved among the different genetic lineages of Haemoproteus parabelopolskyi, an avian blood-borne parasite shared by three sibling species of passerine hosts. Our results indicate that the ancestral state of this clade of parasites had a strict summer transmission with the blackcap (Sylvia atricapilla) as the host. Other transmission strategies and switches to the other host species (Sylvia abyssinica and Sylvia born) evolved recently, several times, independently. This suggests that, although year-round transmission is ecologically successful at present, seasonal transmission may have become more stable over evolutionary time. Switches from strict summer to an extended or year-round transmission strategy could have ecological consequences, if they promote the spread of parasites into more distant regions, transported by the migrating bird hosts. Therefore, a deeper knowledge of how different parasite transmission strategies are structured among birds in temperate areas is essential for understanding how disease emergence risks may develop in the future. (C) 2015 Australian Society for Parasitology Inc. Published by Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ancestral state reconstruction, Haemoproteus parabelopolskyi, Host, switching, Parasite relapse, Parasite transmission seasonality, Sylvia, atricapilla
in
International Journal for Parasitology
volume
45
issue
9-10
pages
605 - 611
publisher
Elsevier
external identifiers
  • pmid:25957160
  • scopus:84937513942
  • wos:000358462000005
ISSN
0020-7519
DOI
10.1016/j.ijpara.2015.03.008
project
Malaria in birds
language
English
LU publication?
yes
id
0a177369-409f-4bb5-bfde-4c5a25220c47 (old id 5453646)
date added to LUP
2015-09-18 15:56:02
date last changed
2017-06-25 04:05:27
@article{0a177369-409f-4bb5-bfde-4c5a25220c47,
  abstract     = {In temperate regions, many vector-borne parasites maximise their transmission prospects by adjusting reproduction to seasonal cycles of host susceptibility and vector availability. Nevertheless, in these regions there are areas where environmental conditions are favourable throughout the year, so that parasites could benefit from a year-round transmission strategy. We analysed how different transmission strategies (strict summer transmission, extended summer transmission - including spring and autumn, and year round transmission) have evolved among the different genetic lineages of Haemoproteus parabelopolskyi, an avian blood-borne parasite shared by three sibling species of passerine hosts. Our results indicate that the ancestral state of this clade of parasites had a strict summer transmission with the blackcap (Sylvia atricapilla) as the host. Other transmission strategies and switches to the other host species (Sylvia abyssinica and Sylvia born) evolved recently, several times, independently. This suggests that, although year-round transmission is ecologically successful at present, seasonal transmission may have become more stable over evolutionary time. Switches from strict summer to an extended or year-round transmission strategy could have ecological consequences, if they promote the spread of parasites into more distant regions, transported by the migrating bird hosts. Therefore, a deeper knowledge of how different parasite transmission strategies are structured among birds in temperate areas is essential for understanding how disease emergence risks may develop in the future. (C) 2015 Australian Society for Parasitology Inc. Published by Elsevier Ltd. All rights reserved.},
  author       = {Perez-Rodriguez, Anton and de la Hera, Ivan and Bensch, Staffan and Perez-Tris, Javier},
  issn         = {0020-7519},
  keyword      = {Ancestral state reconstruction,Haemoproteus parabelopolskyi,Host,switching,Parasite relapse,Parasite transmission seasonality,Sylvia,atricapilla},
  language     = {eng},
  number       = {9-10},
  pages        = {605--611},
  publisher    = {Elsevier},
  series       = {International Journal for Parasitology},
  title        = {Evolution of seasonal transmission patterns in avian blood-borne parasites},
  url          = {http://dx.doi.org/10.1016/j.ijpara.2015.03.008},
  volume       = {45},
  year         = {2015},
}