ArticleParasitology2025
Population density drives increased parasitism via greater exposure and reduced resource availability in wild red deer.
Article in Parasitology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Declining body weight of moose calves related to parasite and disease burden.International journal for parasitology. Parasites and wildlife · 2026Article
- Using Landsat Satellite Imagery to Investigate Spatial and Temporal Variation in Life History Traits in a Long-Term Study Population of Superb Fairy-WrensEcology and evolution · 2026Article
- Markedly reduced prevalence of Schistocephalus solidus in pelagic three-spined sticklebacks (Gasterosteus aculeatus) from Lake Constance.Parasitology research · 2026Article
- Satellite-Derived NDVI Predicts Forage Availability in a Wild Ungulate System: Ground-Truthing Using Field-Collected Vegetation Biomass.Ecology and evolution · 2026Article
- Parasite-mediated inbreeding depression in wild red deer.Heredity · 2025Article
- Local and global density have distinct and parasite-dependent effects on infection in wild sheep.Parasitology · 2025Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Exposure to environmentally transmitted parasites should increase with population density due to accumulation of infective parasites in space. However, resource competition also increases with density, lowering immunity and increasing susceptibility, offering an alternative pathway for density-dependent infection. To test the relationships between these two processes and parasitism, we examined associations between host density, resource availability, immunity, and counts of 3 common helminth parasites using a long-term study of red deer. We found evidence that immunity increased with resource availability while parasite counts declined with immunity. We also found that greater density correlated with reduced resource availability, and while density was positively associated with both strongyle and tissue worm burdens, resource availability was independently and negatively associated with the same burdens. Our results support separate roles of density-dependent exposure and susceptibility in driving infection, providing evidence that resource competition is an important driver of infection, exacerbating effects of density-dependent increases in exposure.
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Registered trials
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