Arriero Elena, Müller Inge, Juvaste Risto, Martínez Francisco Javier, Bertolero Albert
Department of Migration and Immunoecology, Max Planck Institute for Ornithology, Radolfzell,Germany; Department of Zoology and Anthropology, University Complutense of Madrid, Madrid, Spain.
Department of Migration and Immunoecology, Max Planck Institute for Ornithology, Radolfzell,Germany; Department of Biology, University of Konstanz, Konstanz, Germany.
PLoS One. 2015 Feb 13;10(2):e0118279. doi: 10.1371/journal.pone.0118279. eCollection 2015.
The ability to control infections is a key trait for migrants that must be balanced against other costly features of the migratory life. In this study we explored the links between migration and disease ecology by examining natural variation in parasite exposure and immunity in several populations of Lesser Black-backed Gulls (Larus fuscus) with different migratory strategies. We found higher activity of natural antibodies in long distance migrants from the nominate subspecies L.f.fuscus. Circulating levels of IgY showed large variation at the population level, while immune parameters associated with antimicrobial activity showed extensive variation at the individual level irrespective of population or migratory strategy. Pathogen prevalence showed large geographical variation. However, the seroprevalence of one of the gull-specific subtypes of avian influenza (H16) was associated to the migratory strategy, with lower prevalence among the long-distance migrants, suggesting that migration may play a role in disease dynamics of certain pathogens at the population level.
控制感染的能力是候鸟的一项关键特性，必须与迁徙生活的其他高成本特征相平衡。在本研究中，我们通过检查具有不同迁徙策略的几个小黑背鸥（Larus fuscus）种群中寄生虫暴露和免疫力的自然变异，探索了迁徙与疾病生态学之间的联系。我们发现指名亚种L.f.fuscus的长距离迁徙者中天然抗体的活性更高。IgY的循环水平在种群水平上表现出很大差异，而与抗菌活性相关的免疫参数在个体水平上表现出广泛差异，与种群或迁徙策略无关。病原体流行率表现出很大的地理差异。然而，禽流感一种鸥特异性亚型（H16）的血清流行率与迁徙策略有关，长距离迁徙者中的流行率较低，这表明迁徙可能在种群水平上对某些病原体的疾病动态发挥作用。
