Does host migration affect host-parasite interaction? Migrant birds harbor exclusive parasites but have similar roles in parasite-host networks.

IF 2.3 2区 环境科学与生态学 Q2 ECOLOGY
Oecologia Pub Date : 2024-08-01 Epub Date: 2024-08-05 DOI:10.1007/s00442-024-05603-1
Daniela de Angeli Dutra, Raquel Andrade Rodrigues, Mauro Pichorim, Patrícia de Abreu Moreira, Érika Martins Braga
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Abstract

Parasites comprise a substantial portion of global biodiversity and play critical roles in shaping ecosystems by modulating trophic networks and affecting their hosts' abundance and distribution. The dynamics of host migration introduce new complexity to these relationships. From the host perspective, migratory behavior can either act as a defense mechanism or augment exposure to a broader spectrum of pathogens. Conversely, for parasites, host migration represents a mechanism for their dispersion and an opportunity to infect new host species. This study investigates the complex interplay between migration and parasite-host interactions, focusing on the interaction between hosts and avian malaria and malaria-like parasites in the Brazilian Atlantic Rain Forest. We captured 1466 birds representing 70 different species, uncovering 322 infections with Plasmodium/Haemoproteus parasites. We observed variations in migration timing and fluctuations in host abundance across months. By comparing the observed patterns of interaction of migratory and non-migratory birds to patterns of interaction expected at random, we show that migration affects the roles hosts take in the parasite-host network. Interestingly, despite the fact migratory species hosted more exclusive and distinct parasites, migrants did not occupy central network positions, which are mostly occupied by resident birds. Overall, we highlight the role of resident birds as a key species within parasite-host communities and the high specialization among avian haemosporidians and their hosts.

Abstract Image

宿主迁移会影响宿主与寄生虫之间的相互作用吗?迁徙鸟类携带的寄生虫各不相同,但在寄生虫-宿主网络中的作用却相似。
寄生虫占全球生物多样性的很大一部分,它们通过调节营养网络和影响宿主的数量和分布,在塑造生态系统方面发挥着至关重要的作用。宿主迁移的动态给这些关系带来了新的复杂性。从宿主的角度来看,迁移行为既可以作为一种防御机制,也可以增加接触更多病原体的机会。相反,对寄生虫来说,宿主迁移则是它们分散的一种机制,也是感染新宿主物种的机会。本研究调查了迁徙与寄生虫-宿主相互作用之间复杂的相互作用,重点研究了巴西大西洋雨林中宿主与禽类疟疾和类疟疾寄生虫之间的相互作用。我们捕获了代表 70 个不同物种的 1466 只鸟类,发现了 322 例疟原虫/疟原虫寄生虫感染。我们观察到迁徙时间的变化和宿主丰度在不同月份的波动。通过比较观察到的迁徙鸟类和非迁徙鸟类的相互作用模式与随机预期的相互作用模式,我们发现迁徙会影响宿主在寄生虫-宿主网络中扮演的角色。有趣的是,尽管迁徙物种寄生的寄生虫更具排他性和独特性,但迁徙鸟类并未占据网络的中心位置,而这些位置大多被留鸟占据。总之,我们强调了留鸟作为寄生虫-宿主群落中关键物种的作用,以及鸟类血孢子虫及其宿主之间的高度专业化。
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来源期刊
Oecologia
Oecologia 环境科学-生态学
CiteScore
5.10
自引率
0.00%
发文量
192
审稿时长
5.3 months
期刊介绍: Oecologia publishes innovative ecological research of international interest. We seek reviews, advances in methodology, and original contributions, emphasizing the following areas: Population ecology, Plant-microbe-animal interactions, Ecosystem ecology, Community ecology, Global change ecology, Conservation ecology, Behavioral ecology and Physiological Ecology. In general, studies that are purely descriptive, mathematical, documentary, and/or natural history will not be considered.
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