A macro- and micro-evolutionary investigation of African Camponotus ants

 

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dc.contributor.advisor O'Ryan, Colleen en_ZA
dc.contributor.advisor Robertson, Hamish en_ZA
dc.contributor.advisor Harley, Eric en_ZA
dc.contributor.author Eick, Brigitte N en_ZA
dc.date.accessioned 2014-07-30T17:37:26Z
dc.date.available 2014-07-30T17:37:26Z
dc.date.issued 2002 en_ZA
dc.identifier.citation Eick, B. 2002. A macro- and micro-evolutionary investigation of African Camponotus ants. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/4258
dc.description Bibliography: leaves 213-233.
dc.description.abstract Camponotus than the cytochrome oxidase II gene, based on almost all measures of phylogenetic utility. The primary hypothesis proposed to account for this observation is that these two mitochondrial genes are evolving under different evolutionary constraints. Specifically, the cytochrome oxidase II gene displays greater rate heterogeneity than the cytochrome b gene, thereby decreasing its utility for phylogenetic analyses. Combining sequence data from both genes resulted in more robust phylogenetic hypotheses, with the combined topologies displaying greater congruence with the cytochrome b topologies than those based on cytochrome oxidase II sequence data. The morphological data produced a topology that was congruent with that obtained from molecular data, and provided increased support for certain nodes in the context of a combined molecular-morphological framework. The hypothesis that subgeneric classifications within Camponotus do not accurately reflect phylogenetic relationships was supported by the molecular phylogenies. An exception to this hypothesis was the monophyly of the subgenus Myrmosericus, based on cytochrome b data. The morphological and behavioural data provided support for a monophyletic group comprising the four species assigned to the subgenus Myrmopiromis. However, although these four species associated together in a group based on combined cytochrome oxidase II and cytochrome b sequences, this group was paraphyletic in the combined molecular topology, with two species in subgenus Myrmopsamma also falling within this group. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Cell Biology en_ZA
dc.title A macro- and micro-evolutionary investigation of African Camponotus ants en_ZA
dc.type Doctoral Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Department of Molecular and Cell Biology en_ZA
dc.type.qualificationlevel Doctoral
dc.type.qualificationname PhD en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Eick, B. N. (2002). <i>A macro- and micro-evolutionary investigation of African Camponotus ants</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Molecular and Cell Biology. Retrieved from http://hdl.handle.net/11427/4258 en_ZA
dc.identifier.chicagocitation Eick, Brigitte N. <i>"A macro- and micro-evolutionary investigation of African Camponotus ants."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Molecular and Cell Biology, 2002. http://hdl.handle.net/11427/4258 en_ZA
dc.identifier.vancouvercitation Eick BN. A macro- and micro-evolutionary investigation of African Camponotus ants. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Molecular and Cell Biology, 2002 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/4258 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Eick, Brigitte N AB - Camponotus than the cytochrome oxidase II gene, based on almost all measures of phylogenetic utility. The primary hypothesis proposed to account for this observation is that these two mitochondrial genes are evolving under different evolutionary constraints. Specifically, the cytochrome oxidase II gene displays greater rate heterogeneity than the cytochrome b gene, thereby decreasing its utility for phylogenetic analyses. Combining sequence data from both genes resulted in more robust phylogenetic hypotheses, with the combined topologies displaying greater congruence with the cytochrome b topologies than those based on cytochrome oxidase II sequence data. The morphological data produced a topology that was congruent with that obtained from molecular data, and provided increased support for certain nodes in the context of a combined molecular-morphological framework. The hypothesis that subgeneric classifications within Camponotus do not accurately reflect phylogenetic relationships was supported by the molecular phylogenies. An exception to this hypothesis was the monophyly of the subgenus Myrmosericus, based on cytochrome b data. The morphological and behavioural data provided support for a monophyletic group comprising the four species assigned to the subgenus Myrmopiromis. However, although these four species associated together in a group based on combined cytochrome oxidase II and cytochrome b sequences, this group was paraphyletic in the combined molecular topology, with two species in subgenus Myrmopsamma also falling within this group. DA - 2002 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2002 T1 - A macro- and micro-evolutionary investigation of African Camponotus ants TI - A macro- and micro-evolutionary investigation of African Camponotus ants UR - http://hdl.handle.net/11427/4258 ER - en_ZA


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