Phylogenetics, biogeography and co-adaptation between a Batesian model (Micrurus fulvius) and mimic (Lampropeltis triangulum)
Item
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Title
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Phylogenetics, biogeography and co-adaptation between a Batesian model (Micrurus fulvius) and mimic (Lampropeltis triangulum)
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Identifier
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d_2009_2013:68f46cead08c:09966
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identifier
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10010
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Creator
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Friedman, Michael,
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Contributor
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Rob DeSalle
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Date
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2009
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Language
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English
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Publisher
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City University of New York.
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Subject
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Zoology | Genetics | herpetology | mimicry | phylogenetic | phylogeography
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Abstract
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The coral snake, Micrurus fulvius (Elapidae), and the scarlet king snake, Lampropeltis triangulum (Colubridae), members of a Batesian mimicry complex in the southeastern and southern United States were subjects of a study of model-mimic co-evolution. Inferring co-evolution required discovery of distinct terminals within each group, for posterior phylogenetic inference and analysis of co-variation of color patterns among sympatric populations of each species. In addition, haplotype and population differentiation were assessed. Also, hypotheses regarding selection on color patterns were tested. The latter included model-mimic tracking, environmental effects and frequency dependence of mimetic color pattern variation. Population Aggregation Analysis failed to diagnose terminals for either group. Haplotype and population genetic analyses showed both groups to be largely panmictic, with some north/south differentiation. Morphometric analyses of means and variations in proportions of color pattern components failed to reveal geographic tracking by mimics of models, but manifested possible independent geographic or environmental effects on each of the species. Frequency-dependent selection was falsified for color pattern variation in mimics.
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Type
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dissertation
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Source
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2009_2013.csv
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degree
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Ph.D.
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Program
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Biology
