Impact of Introgression on the Distribution of Traits Across an Appalachian Salamander Hybrid Zone. Carter, C. M Ph.D. Thesis, University of Georgia, Athens, Georgia, 2023. abstract bibtex Hybrid zones provide a unique opportunity to untangle evolutionary mechanisms and challenge the way we think about biological and genetic diversity. Studies of hybrid zones can provide valuable insight into the dynamics and interactions that shape a variety of systems. Moreover, hybrid zones and hybrid lineages may themselves play an important role in the preservation and enhancement of adaptive potential in populations and communities under changing conditions. In this dissertation, I identify and characterize patterns in the distribution of traits across a Plethodon hybrid zone. In Chapter 2, I explore how climate has influenced the distribution of genomic and phenotypic traits of a P. shermani and P. teyahalee hybrid zone across a spatially complex hydroclimate gradient in the Coweeta basin. Chapter 3 examines the extent to which P. teyahalee, P. shermani, and hybrids in the Coweeta basin exhibit behavioral differences regarding their allocations of time to activities on the surface versus those occurring belowground. I explore how patterns in behavior relate to hybrid index and weather across this system. In Chapter 4 I compare the physiological traits among P. teyahalee, P. shermani, and hybrid and explore the factors that influence rates of cutaneous water loss. Finally, in Chapter 5 I compare patterns in body size linked to demography and water loss and identify climatic and topographic variables that may be influencing patterns in morphology across this hybrid zone. Insights from this research will enable us to better understand the ecological and evolutionary processes that structure this system and improve our ability to make predictions about how lineage dynamics may shift in the future.
@phdthesis{carter_impact_2023,
address = {Athens, Georgia},
type = {Ph.{D}. {Dissertation}},
title = {Impact of {Introgression} on the {Distribution} of {Traits} {Across} an {Appalachian} {Salamander} {Hybrid} {Zone}},
abstract = {Hybrid zones provide a unique opportunity to untangle evolutionary mechanisms and challenge the way we think about biological and genetic diversity. Studies of hybrid zones can provide valuable insight into the dynamics and interactions that shape a variety of systems. Moreover, hybrid zones and hybrid lineages may themselves play an important role in the preservation and enhancement of adaptive potential in populations and communities under changing conditions. In this dissertation, I identify and characterize patterns in the distribution of traits across a Plethodon hybrid zone. In Chapter 2, I explore how climate has influenced the distribution of genomic and phenotypic traits of a P. shermani and P. teyahalee hybrid zone across a spatially complex hydroclimate gradient in the Coweeta basin. Chapter 3 examines the extent to which P. teyahalee, P. shermani, and hybrids in the Coweeta basin exhibit behavioral differences regarding their allocations of time to activities on the surface versus those occurring belowground. I explore how patterns in behavior relate to hybrid index and weather across this system. In Chapter 4 I compare the physiological traits among P. teyahalee, P. shermani, and hybrid and explore the factors that influence rates of cutaneous water loss. Finally, in Chapter 5 I compare patterns in body size linked to demography and water loss and identify climatic and topographic variables that may be influencing patterns in morphology across this hybrid zone. Insights from this research will enable us to better understand the ecological and evolutionary processes that structure this system and improve our ability to make predictions about how lineage dynamics may shift in the future.},
language = {en},
school = {University of Georgia},
author = {Carter, Cynthia M},
year = {2023},
}
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In Chapter 2, I explore how climate has influenced the distribution of genomic and phenotypic traits of a P. shermani and P. teyahalee hybrid zone across a spatially complex hydroclimate gradient in the Coweeta basin. Chapter 3 examines the extent to which P. teyahalee, P. shermani, and hybrids in the Coweeta basin exhibit behavioral differences regarding their allocations of time to activities on the surface versus those occurring belowground. I explore how patterns in behavior relate to hybrid index and weather across this system. In Chapter 4 I compare the physiological traits among P. teyahalee, P. shermani, and hybrid and explore the factors that influence rates of cutaneous water loss. Finally, in Chapter 5 I compare patterns in body size linked to demography and water loss and identify climatic and topographic variables that may be influencing patterns in morphology across this hybrid zone. Insights from this research will enable us to better understand the ecological and evolutionary processes that structure this system and improve our ability to make predictions about how lineage dynamics may shift in the future.","language":"en","school":"University of Georgia","author":[{"propositions":[],"lastnames":["Carter"],"firstnames":["Cynthia","M"],"suffixes":[]}],"year":"2023","bibtex":"@phdthesis{carter_impact_2023,\n\taddress = {Athens, Georgia},\n\ttype = {Ph.{D}. {Dissertation}},\n\ttitle = {Impact of {Introgression} on the {Distribution} of {Traits} {Across} an {Appalachian} {Salamander} {Hybrid} {Zone}},\n\tabstract = {Hybrid zones provide a unique opportunity to untangle evolutionary mechanisms and challenge the way we think about biological and genetic diversity. Studies of hybrid zones can provide valuable insight into the dynamics and interactions that shape a variety of systems. 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