ArticleCommunications biology2025
How individual variation shapes ecological niches in two Pipistrellus bat species.
Article in Communications biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Niche partitioning is a crucial mechanism explaining species coexistence and biodiversity; however, the role of individual variation is less understood. As global changes reshuffle species communities, understanding coexistence mechanisms is vital. In this study, we use two co-occurring, morphologically similar bat species, Nathusius' pipistrelle (Pipistrellus nathusii) and the range-expanding Kuhl's pipistrelle (P. kuhlii), as models. We examine their niche partitioning across habitats and time, considering individual variations by analysing the spatio-temporal habitat selection of 58 radio-tracked individuals. For resource assessment, we use metabarcoding of guano samples. Our results show that individual variation in both species exceeded species-level differences. Nathusius' pipistrelle exhibits greater between-individual variation, while the range-expanding Kuhl's pipistrelle shows stronger within-individual variation, probably facilitating its expansion. This study emphasises the significance of individual variation in investigating animal niche partitioning. It suggests a contribution of within-individual variation in the range expansion of bat species, reshaping animal communities under global change.
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