Dutch House Martins Delichon urbicum gain blood parasite infections over their lifetime, but do not seem to suffer

@article{Piersma2012DutchHM,
  title={Dutch House Martins Delichon urbicum gain blood parasite infections over their lifetime, but do not seem to suffer},
  author={Theunis Piersma and Marco van der Velde},
  journal={Journal of Ornithology},
  year={2012},
  volume={153},
  pages={907 - 912}
}
In a southern Spanish population of the colonial-breeding Afrotropical migrant House Martins Delichon urbicum, a high overall prevalence of (molecularly assayed) haemosporidian infections (in the non-parasitological literature usually denoted with the inclusive term ‘malaria’) was associated with negative fitness consequences for individuals carrying single or double infections. To verify this in a northern population, we here report on the occurrence of malaria in 112 fledgling and 358 adult… 

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