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The Evolutionary Ecology of Host-Mic...

Parker, Erik.

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The Evolutionary Ecology of Host-Microbiome Symbiosis in Onthophagus Dung Beetles.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Evolutionary Ecology of Host-Microbiome Symbiosis in Onthophagus Dung Beetles./
Author:	Parker, Erik.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	174 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-09, Section: B.
Contained By:	Dissertations Abstracts International82-09B.
Subject:	Evolution & development. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28319256
ISBN:	9798582577188

The Evolutionary Ecology of Host-Microbiome Symbiosis in Onthophagus Dung Beetles.
Parker, Erik.

The Evolutionary Ecology of Host-Microbiome Symbiosis in Onthophagus Dung Beetles. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 174 p.

Source: Dissertations Abstracts International, Volume: 82-09, Section: B.

Thesis (Ph.D.)--Indiana University, 2021.

This item must not be sold to any third party vendors.

The effect of host-microbe interactions on diverse aspects of host biology are increasingly appreciated across biological disciplines, yet the roles played by these interactions in shaping host evolution remain poorly understood. My dissertation research seeks to address these and related issues using the dung beetle genus Onthophagus. Previous work in this genus has demonstrated that mothers reliably pass to their offspring a conserved group of gut microbes, and that these vertically inherited microbes enhance offspring growth, development, and survival, especially under stress. In the first three chapters of my dissertation, I employed a manipulative method which allowed for the exchange of gut microbiota between Onthophagus species. Using this technique, I was able to first show that different species have diverged to make use of non-interchangeable gut microbiota, and that disruption of these specific host-microbiota relationships has potentially long-term evolutionary consequences. Secondly, I then showed that this host-microbiota species specificity can arise over evolutionarily short timespans, including recently divergent, broadly sympatric and often syntopic sister species sharing virtually identical ecologies. In my third chapter, I was able to show that Onthophagus microbiota may influence population adaptation to local thermal conditions. However, contrary to my original hypotheses, results suggested that local host microbiome interactions may limit, rather than enhance, host fitness. Finally, in my fourth chapter, I employed a microbial sequencing approach to provide an in-depth assessment of the taxonomic composition of the gut microbiota of several dung beetle species, and to determine to what extent microbiome composition changes when hosts are introduced to novel geographic ranges. As a whole, my dissertation employs a diversity of methodologies to better understand the evolutionary and ecological ramifications of dung beetle microbiome symbioses.

ISBN: 9798582577188Subjects--Topical Terms:

3172418
Evolution & development.
Subjects--Index Terms:

Coevolution

The Evolutionary Ecology of Host-Microbiome Symbiosis in Onthophagus Dung Beetles.
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100 1 $a Parker, Erik. $0 (orcid)0000-0002-5537-7900 $3 3560245
245 1 4 $a The Evolutionary Ecology of Host-Microbiome Symbiosis in Onthophagus Dung Beetles.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 174 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-09, Section: B.
500 $a Advisor: Moczek, Armin P.
502 $a Thesis (Ph.D.)--Indiana University, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a The effect of host-microbe interactions on diverse aspects of host biology are increasingly appreciated across biological disciplines, yet the roles played by these interactions in shaping host evolution remain poorly understood. My dissertation research seeks to address these and related issues using the dung beetle genus Onthophagus. Previous work in this genus has demonstrated that mothers reliably pass to their offspring a conserved group of gut microbes, and that these vertically inherited microbes enhance offspring growth, development, and survival, especially under stress. In the first three chapters of my dissertation, I employed a manipulative method which allowed for the exchange of gut microbiota between Onthophagus species. Using this technique, I was able to first show that different species have diverged to make use of non-interchangeable gut microbiota, and that disruption of these specific host-microbiota relationships has potentially long-term evolutionary consequences. Secondly, I then showed that this host-microbiota species specificity can arise over evolutionarily short timespans, including recently divergent, broadly sympatric and often syntopic sister species sharing virtually identical ecologies. In my third chapter, I was able to show that Onthophagus microbiota may influence population adaptation to local thermal conditions. However, contrary to my original hypotheses, results suggested that local host microbiome interactions may limit, rather than enhance, host fitness. Finally, in my fourth chapter, I employed a microbial sequencing approach to provide an in-depth assessment of the taxonomic composition of the gut microbiota of several dung beetle species, and to determine to what extent microbiome composition changes when hosts are introduced to novel geographic ranges. As a whole, my dissertation employs a diversity of methodologies to better understand the evolutionary and ecological ramifications of dung beetle microbiome symbioses.
590 $a School code: 0093.
650 4 $a Evolution & development. $3 3172418
650 4 $a Ecology. $3 516476
650 4 $a Microbiology. $3 536250
653 $a Coevolution
653 $a Dung beetles
653 $a Host-microbiome interactions
653 $a Symbiosis
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690 $a 0329
690 $a 0410
710 2 $a Indiana University. $b Biology. $3 3183002
773 0 $t Dissertations Abstracts International $g 82-09B.
790 $a 0093
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28319256