Ecological and Evolutionary Relationships between Bees and their Bacterial Gut Microbiota

Persistent Link:
http://hdl.handle.net/10150/223362
Title:
Ecological and Evolutionary Relationships between Bees and their Bacterial Gut Microbiota
Author:
Martinson, Vincent G.
Issue Date:
2012
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Embargo:
Release after 24-Apr-2013
Abstract:
Gut microbial communities exist in the vast majority of animals, and often form complex symbioses with their hosts that affect their host's biology in numerous ways. To date, the majority of studies of these complex interactions have focused on the nutritional benefits provided by the microbiota; however, the natural microbiota can also influence development, immunity, and the metabolism of its host. Apis mellifera, the honey bee, harbors a distinctive bacterial community that is present in individuals from distant locations around the world; however, the basis of the bee-microbiota association is unknown. This dissertation explores properties of the bacterial microbiota within bees, including its persistence of this association, mechanisms of transmission, localization through host ontogeny, and basic metabolic capabilities that define and maintain the symbiotic relationship. Apis and Bombus species (honey and bumble bees) share a distinct bacterial microbiota that is not present in other bees and wasps. Close analysis of the A. mellifera microbiota revealed consistent communities in adult worker gut organs and a general lack of bacteria in larvae. Contact between workers and with hive materials were identified as major routes of transmission for bacterial communities, showing the importance of social behavior in this association. Genomic analysis of a gut bacterium co-sequenced with the Bombus impatiens genome revealed it as a divergent lineage of Gammaproteobacteria, and deletions of conserved metabolic pathways, reduction in genome size, and its low GC content all suggest that the bacterial species has had a long association with its host.
Type:
text; Electronic Dissertation
Keywords:
Bombus impatiens; bumblebee; gut microbiota; honeybee; Insect Science; Apis mellifera; bacteria
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Graduate College; Insect Science
Degree Grantor:
University of Arizona
Advisor:
Moran, Nancy A.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleEcological and Evolutionary Relationships between Bees and their Bacterial Gut Microbiotaen_US
dc.creatorMartinson, Vincent G.en_US
dc.contributor.authorMartinson, Vincent G.en_US
dc.date.issued2012-
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.releaseRelease after 24-Apr-2013en_US
dc.description.abstractGut microbial communities exist in the vast majority of animals, and often form complex symbioses with their hosts that affect their host's biology in numerous ways. To date, the majority of studies of these complex interactions have focused on the nutritional benefits provided by the microbiota; however, the natural microbiota can also influence development, immunity, and the metabolism of its host. Apis mellifera, the honey bee, harbors a distinctive bacterial community that is present in individuals from distant locations around the world; however, the basis of the bee-microbiota association is unknown. This dissertation explores properties of the bacterial microbiota within bees, including its persistence of this association, mechanisms of transmission, localization through host ontogeny, and basic metabolic capabilities that define and maintain the symbiotic relationship. Apis and Bombus species (honey and bumble bees) share a distinct bacterial microbiota that is not present in other bees and wasps. Close analysis of the A. mellifera microbiota revealed consistent communities in adult worker gut organs and a general lack of bacteria in larvae. Contact between workers and with hive materials were identified as major routes of transmission for bacterial communities, showing the importance of social behavior in this association. Genomic analysis of a gut bacterium co-sequenced with the Bombus impatiens genome revealed it as a divergent lineage of Gammaproteobacteria, and deletions of conserved metabolic pathways, reduction in genome size, and its low GC content all suggest that the bacterial species has had a long association with its host.en_US
dc.typetexten_US
dc.typeElectronic Dissertationen_US
dc.subjectBombus impatiensen_US
dc.subjectbumblebeeen_US
dc.subjectgut microbiotaen_US
dc.subjecthoneybeeen_US
dc.subjectInsect Scienceen_US
dc.subjectApis melliferaen_US
dc.subjectbacteriaen_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineInsect Scienceen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorMoran, Nancy A.en_US
dc.contributor.committeememberOchman, Howarden_US
dc.contributor.committeememberSanderson, Michael J.en_US
dc.contributor.committeememberWheeler, Diana E.en_US
dc.contributor.committeememberWhiteman, Noah K.en_US
dc.contributor.committeememberMoran, Nancy A.en_US
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