Investigating the influence of diet diversity on infection outcomes in a bumble bee ( Bombus impatiens ) and microsporidian ( Nosema bombi ) host-pathogen system.

Autor:	Martinez A; School of Biological Sciences, Illinois State University, Normal, IL, United States., Calhoun AC; School of Biological Sciences, Illinois State University, Normal, IL, United States., Sadd BM; School of Biological Sciences, Illinois State University, Normal, IL, United States.
Jazyk:	angličtina
Zdroj:	Frontiers in insect science [Front Insect Sci] 2023 Aug 17; Vol. 3, pp. 1207058. Date of Electronic Publication: 2023 Aug 17 (Print Publication: 2023).
DOI:	10.3389/finsc.2023.1207058
Abstrakt:	Diet can have an array of both direct and indirect effects on an organism's health and fitness, which can influence the outcomes of host-pathogen interactions. Land use changes, which could impact diet quantity and quality, have imposed foraging stress on important natural and agricultural pollinators. Diet related stress could exacerbate existing negative impacts of pathogen infection. Accounting for most of its nutritional intake in terms of protein and many micronutrients, pollen can influence bee health through changes in immunity, infection, and various aspects of individual and colony fitness. We investigate how adult pollen consumption, pollen type, and pollen diversity influence bumble bee Bombus impatiens survival and infection outcomes for a microsporidian pathogen Nosema (Vairimorpha) bombi . Experimental pathogen exposures of larvae occurred in microcolonies and newly emerged adult workers were given one of three predominantly monofloral, polyfloral, or no pollen diets. Workers were assessed for size, pollen consumption, infection 8-days following adult-eclosion, survival, and the presence of extracellular microsporidian spores at death. Pollen diet treatment, specifically absence of pollen, and infection independently reduced survival, but we saw no effects of pollen, pollen type, or pollen diet diversity on infection outcomes. The latter suggests infection outcomes were likely already set, prior to differential diets. Although infection outcomes were not altered by pollen diet in our study, it highlights both pathogen infection and pollen availability as important for bumble bee health, and these factors may interact at different stages of bumble bee development, at the colony level, or under different dietary regimes. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author BS declared that they were an editorial board member of Frontiers at the time of submission. This had no impact on the peer review process and the final decision. (Copyright © 2023 Martinez, Calhoun and Sadd.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu