Search

Your search keyword '"Newbold LK"' showing total 2 results
Start Over Author "Newbold LK" Publisher wiley
2 results on '"Newbold LK"'

1. Rearing and foraging affects bumblebee (Bombus terrestris) gut microbiota

Author

Newbold, LK, Oliver, AE, Cuthbertson, L, Walkington, SE, Gweon, HS, Heard, MS, and Van der Gast, CJ

Subjects
Biology and Microbiology, Agriculture and Soil Science, Ecology and Environment
Abstract

© 2015 Society for Applied Microbiology and John Wiley & Sons Ltd. Bumblebees are ecologically and economically important as pollinators of crop and wild plants, especially in temperate systems. Species, such as the buff-tailed bumblebee (Bombus terrestris), are reared commercially to pollinate high-value crops. Their highly specific gut microbiota, characterized by low diversity, may affect nutrition and immunity and are likely to be important for fitness and colony health. However, little is known about how environmental factors affect bacterial community structure. We analysed the gut microbiota from three groups of worker bumblebees (B.terrestris) from distinct colonies that varied in rearing and foraging characteristics: commercially reared with restricted foraging (RR); commercially reared with outside foraging (RF); and wild-caught workers (W). Contrary to previous studies, which indicate that bacterial communities are highly conserved across workers, we found that RF individuals had an intermediate community structure compared with RR and W types. Further, this was shaped by differences in the abundances of common operational taxonomic units (OTUs) and the diversity of rare OTUs present, which we propose results from an increase in the variety of carbohydrates obtained through foraging.

Published
2015
Full Text
View/download PDF

2. Marine bacterial communities are resistant to elevated carbon dioxide levels

Author

Oliver, AE, Newbold, LK, Whiteley, AS, van der Gast, CJ, Oliver, AE, Newbold, LK, Whiteley, AS, and van der Gast, CJ

Abstract

© 2014 Society for Applied Microbiology and John Wiley & Sons Ltd. Summary: It is well established that the release of anthropogenic-derived CO2 into the atmosphere will be mainly absorbed by the oceans, with a concomitant drop in pH, a process termed ocean acidification. As such, there is considerable interest in how changes in increased CO2 and lower pH will affect marine biota, such as bacteria, which play central roles in oceanic biogeochemical processes. Set within an ecological framework, we investigated the direct effects of elevated CO2, contrasted with ambient conditions on the resistance and resilience of marine bacterial communities in a replicated temporal seawater mesocosm experiment. The results of the study strongly indicate that marine bacterial communities are highly resistant to the elevated CO2 and lower pH conditions imposed, as demonstrated from measures of turnover using taxa-time relationships and distance-decay relationships. In addition, no significant differences in community abundance, structure or composition were observed. Our results suggest that there are no direct effects on marine bacterial communities and that the bacterial fraction of microbial plankton holds enough flexibility and evolutionary capacity to withstand predicted future changes from elevated CO2 and subsequent ocean acidification.

Published
2014

Catalog

Books, media, physical & digital resources
See catalog results