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The Relative Influence Of Habitat Amount And Configuration On Genetic Structure Across Multiple Spatial Scales, Katie L Millette, Nusha Keyghobadi
The Relative Influence Of Habitat Amount And Configuration On Genetic Structure Across Multiple Spatial Scales, Katie L Millette, Nusha Keyghobadi
Biology Publications
Despite strong interest in understanding how habitat spatial structure shapes the genetics of populations, the relative importance of habitat amount and configuration for patterns of genetic differentiation remains largely unexplored in empirical systems. In this study, we evaluate the relative influence of, and interactions among, the amount of habitat and aspects of its spatial configuration on genetic differentiation in the pitcher plant midge, Metriocnemus knabi. Larvae of this species are found exclusively within the water-filled leaves of pitcher plants (Sarracenia purpurea) in a system that is naturally patchy at multiple spatial scales (i.e., leaf, plant, cluster, peatland). Using generalized linear …
Population Genetic Structure In The Pitcher Plant Flesh Fly Fletcherimyia Fletcheri, John R. O'Leary
Population Genetic Structure In The Pitcher Plant Flesh Fly Fletcherimyia Fletcheri, John R. O'Leary
Electronic Thesis and Dissertation Repository
The study of population genetic structure in the pitcher plant flesh fly, Fletcherimyia fletcheri, is an important step in bettering our understanding of dispersal abilities, gene flow, and behavior in the species. In this paper, an extended sampling of populations across Algonquin Provincial Park was performed to elucidate an effective scale of genetic differentiation in F. fletcheri. Genetic differentiation between sites was compared to interceding landscape composition, and digital dispersal models were developed, testing the hypothesis that F. fletcheri uses aquatic tributaries for dispersal between peatlands. Data were collected on 613 specimens from 15 populations, and population differentiation …
The Influence Of Habitat Composition And Configuration On The Genetic Structure Of The Pitcher Plant Midge, Katie Millette
The Influence Of Habitat Composition And Configuration On The Genetic Structure Of The Pitcher Plant Midge, Katie Millette
Electronic Thesis and Dissertation Repository
A major question in landscape genetics is how habitat structure influences spatial patterns of genetic differentiation. In this study, I evaluate the relative importance and effects of aspects of habitat composition (habitat amount) and configuration (patch size and isolation) on the spatial genetic structure of the pitcher plant midge, Metriocnemus knabi, whose larvae are found exclusively within the water-filled leaves of pitcher plants (Sarracenia purpurea) in a system that is naturally patchy at multiple spatial scales (i.e., leaf, plant, cluster, bog). I estimated genetic differentiation (FST) among leaves, plants, and clusters using 11 microsatellite …