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Urban habitat fragmentation and floral resources shape the occurrence of gut parasites in two bumblebee species
Urbanization and the expansion of human activities foster radical ecosystem changes with cascading effects also involving host‐pathogen interactions. Urban pollinator insects face several stressors related to landscape and local scale features such as green habitat loss, fragmentation and availabili...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10338672/ https://www.ncbi.nlm.nih.gov/pubmed/37456076 http://dx.doi.org/10.1002/ece3.10299 |
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author | Tommasi, Nicola Colombo, Beatrice Pioltelli, Emiliano Biella, Paolo Casiraghi, Maurizio Galimberti, Andrea |
author_facet | Tommasi, Nicola Colombo, Beatrice Pioltelli, Emiliano Biella, Paolo Casiraghi, Maurizio Galimberti, Andrea |
author_sort | Tommasi, Nicola |
collection | PubMed |
description | Urbanization and the expansion of human activities foster radical ecosystem changes with cascading effects also involving host‐pathogen interactions. Urban pollinator insects face several stressors related to landscape and local scale features such as green habitat loss, fragmentation and availability reduction of floral resources with unpredictable effects on parasite transmission. Furthermore, beekeeping may contribute to the spread of parasites to wild pollinators by increasing the number of parasite hosts. Here we used DNA‐based diagnostics tools to evaluate how the occurrence of parasites, namely microsporidians (Nosema spp.), trypanosomatids (Crithidia spp.) and neogregarines (Apicystis bombi), is shaped by the above‐mentioned stressors in two bumblebee species (i.e. Bombus terrestris and Bombus pascuorum). Infection rates of the two species were different and generally higher in B. terrestris. Moreover, they showed different responses towards the same ecological variables, possibly due to differences in body size and foraging habits supposed to affect their susceptibility to parasite infection. The probability of infection was found to be reduced in B. pascuorum by green habitat fragmentation, while increased along with floral resource availability. Unexpectedly, B. terrestris had a lower parasite richness nearby apiaries maybe due to the fact that parasites are prone to be transmitted among the most abundant species. Our finding supports the need to design proper conservation measures based on species‐specific knowledge, as suggested by the variation in the parasite occurrence of the two species. Moreover, conservation policies aiming at safeguarding pollinators through flower planting should consider the indirect effects of these measures for parasite transmission together with pollinator biodiversity issues. |
format | Online Article Text |
id | pubmed-10338672 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-103386722023-07-14 Urban habitat fragmentation and floral resources shape the occurrence of gut parasites in two bumblebee species Tommasi, Nicola Colombo, Beatrice Pioltelli, Emiliano Biella, Paolo Casiraghi, Maurizio Galimberti, Andrea Ecol Evol Research Articles Urbanization and the expansion of human activities foster radical ecosystem changes with cascading effects also involving host‐pathogen interactions. Urban pollinator insects face several stressors related to landscape and local scale features such as green habitat loss, fragmentation and availability reduction of floral resources with unpredictable effects on parasite transmission. Furthermore, beekeeping may contribute to the spread of parasites to wild pollinators by increasing the number of parasite hosts. Here we used DNA‐based diagnostics tools to evaluate how the occurrence of parasites, namely microsporidians (Nosema spp.), trypanosomatids (Crithidia spp.) and neogregarines (Apicystis bombi), is shaped by the above‐mentioned stressors in two bumblebee species (i.e. Bombus terrestris and Bombus pascuorum). Infection rates of the two species were different and generally higher in B. terrestris. Moreover, they showed different responses towards the same ecological variables, possibly due to differences in body size and foraging habits supposed to affect their susceptibility to parasite infection. The probability of infection was found to be reduced in B. pascuorum by green habitat fragmentation, while increased along with floral resource availability. Unexpectedly, B. terrestris had a lower parasite richness nearby apiaries maybe due to the fact that parasites are prone to be transmitted among the most abundant species. Our finding supports the need to design proper conservation measures based on species‐specific knowledge, as suggested by the variation in the parasite occurrence of the two species. Moreover, conservation policies aiming at safeguarding pollinators through flower planting should consider the indirect effects of these measures for parasite transmission together with pollinator biodiversity issues. John Wiley and Sons Inc. 2023-07-12 /pmc/articles/PMC10338672/ /pubmed/37456076 http://dx.doi.org/10.1002/ece3.10299 Text en © 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Articles Tommasi, Nicola Colombo, Beatrice Pioltelli, Emiliano Biella, Paolo Casiraghi, Maurizio Galimberti, Andrea Urban habitat fragmentation and floral resources shape the occurrence of gut parasites in two bumblebee species |
title | Urban habitat fragmentation and floral resources shape the occurrence of gut parasites in two bumblebee species |
title_full | Urban habitat fragmentation and floral resources shape the occurrence of gut parasites in two bumblebee species |
title_fullStr | Urban habitat fragmentation and floral resources shape the occurrence of gut parasites in two bumblebee species |
title_full_unstemmed | Urban habitat fragmentation and floral resources shape the occurrence of gut parasites in two bumblebee species |
title_short | Urban habitat fragmentation and floral resources shape the occurrence of gut parasites in two bumblebee species |
title_sort | urban habitat fragmentation and floral resources shape the occurrence of gut parasites in two bumblebee species |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10338672/ https://www.ncbi.nlm.nih.gov/pubmed/37456076 http://dx.doi.org/10.1002/ece3.10299 |
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