| Abstract | Bdelloids are commonly found in freshwaters or limno-terrestrial habitats. No formal attempt has yet been performed to define bdelloid niche and to identify whether species respond in a clear, consistent, and quantifiable fashion to environmental parameters. Therefore, we analysed the correlation between the occurrence of common Rotaria species in Thailand and environmental variables, including limnological, climatic, and biotic features. We followed two approaches to determine the niche of the investigated species: performing regression models for each species and reconstructing the niche spaces occupied by each species using n-dimensional hypervolumes. The effect of local-scale limnological and large-scale climatic variables was almost negligible at explaining the occurrence and distribution of Rotaria species. Surprisingly, primary productivity, known in temperate areas to be a major positive correlate of the occurrence of R. neptunia, appeared to have no effect on this species when measured as chlorophyll a, and a negative effect when measured as cyanobacterial productivity. Biotic variables revealed that different Rotaria species have a similar response to environmental variables. Two main messages are supported: (i) no clear environmental features unambiguously affected bdelloids species; (ii) features that are relevant for limnological processes at temperate latitudes may not be applicable for explaining processes in tropical latitudes. |
| Text | 456162 2021 10.1007/s10750 021 04681 z rotifera Potential niche displacement in species of aquatic bdelloid rotifers between temperate and tropical areas Rapeepan Jaturapruek, Diego Fontaneto, Stefano Mammola, Supiyanit Maiphae Department of Zoology, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, Thailand Molecular Ecology Group MEG , Water Research Institute IRSA , National Research Council of Italy CNR , Verbania Pallanza, Italy Laboratory for Integrative Biodiversity Research LIBRe , Finnish Museum of Natural History LUOMUS , University of Helsinki, Helsinki, Finland Bdelloids are commonly found in freshwaters or limno terrestrial habitats. No formal attempt has yet been performed to define bdelloid niche and to identify whether species respond in a clear, consistent, and quantifiable fashion to environmental parameters. Therefore, we analysed the correlation between the occurrence of common Rotaria species in Thailand and environmental variables, including limnological, climatic, and biotic features. We followed two approaches to determine the niche of the investigated species performing regression models for each species and reconstructing the niche spaces occupied by each species using n dimensional hypervolumes. The effect of local scale limnological and large scale climatic variables was almost negligible at explaining the occurrence and distribution of Rotaria species. Surprisingly, primary productivity, known in temperate areas to be a major positive correlate of the occurrence of R. neptunia, appeared to have no effect on this species when measured as chlorophyll a, and a negative effect when measured as cyanobacterial productivity. Biotic variables revealed that different Rotaria species have a similar response to environmental variables. Two main messages are supported i no clear environmental features unambiguously affected bdelloids species; ii features that are relevant for limnological processes at temperate latitudes may not be applicable for explaining processes in tropical latitudes. Published version https //link.springer.com/article/10.1007/s10750 021 04681 z Potential niche displacement in species of aquatic bdelloid rotifers between temperate and tropical areas Jaturapruek et al 2021 EV.pdf Articolo in rivista Kluwer 1573 5117 Hydrobiologia Dordr., Online Hydrobiologia Dordr., Online Hydrobiologia Dordr., Online Hydrobiologia. Dordr., Online Hydrobiologia Dordrecht Dordr., Online Hydrobiologia Boston Dordr., Online Hydrobiologia London Dordr., Online diego.fontaneto FONTANETO DIEGO stefano.mammola MAMMOLA STEFANO |
