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Title: Anthropogenic disturbance favours generalist over specialist parasites in bird communities: Implications for risk of disease emergence

Journal Article · · Ecology Letters
DOI: https://doi.org/10.1111/ele.13818 · OSTI ID:1788121

Abstract Niche theory predicts specialists which will be more sensitive to environmental perturbation compared to generalists, a hypothesis receiving broad support in free‐living species. Based on their niche breadth, parasites can also be classified as specialists and generalists, with specialists infecting only a few and generalists a diverse array of host species. Here, using avian haemosporidian parasites infecting wild bird populations inhabiting the Western Ghats, India as a model system, we elucidate how climate, habitat and human disturbance affects parasite prevalence both directly and indirectly via their effects on host diversity. Our data demonstrate that anthropogenic disturbance acts to reduce the prevalence of specialist parasite lineages, while increasing that of generalist lineages. Thus, as in free‐living species, disturbance favours parasite communities dominated by generalist versus specialist species. Because generalist parasites are more likely to cause emerging infectious diseases, such biotic homogenisation of parasite communities could increase disease emergence risk in the Anthropocene.

Sponsoring Organization:
USDOE
Grant/Contract Number:
EM0004391
OSTI ID:
1788121
Journal Information:
Ecology Letters, Journal Name: Ecology Letters Journal Issue: 9 Vol. 24; ISSN 1461-023X
Publisher:
Wiley-BlackwellCopyright Statement
Country of Publication:
United Kingdom
Language:
English

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