Adaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae)

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dc.contributor.advisorMoran, V Cen_ZA
dc.contributor.advisorHoffmann Johnen_ZA
dc.contributor.authorDonaldson, John Sidneyen_ZA
dc.date.accessioned2014-10-11T12:21:13Z
dc.date.available2014-10-11T12:21:13Z
dc.date.issued1991en_ZA
dc.descriptionBibliography: leaves 123-134.en_ZA
dc.description.abstractThis thesis deals with host relationships in an enigmatic and seemingly primitive group of weevils belonging to the genus Antliarhinus (Coleoptera: Brentidae). These beetles occur only on species of the cycad genus Encephalartos and appear to retain an ancient association with cycads, a group of plants that were widespread in the Mesozoic era (ca. 200 MYA) before the rise of the angiosperms and which are now represented by 11 genera with relict distributions in the tropics and sub-tropics. The primary aim of this research was to determine the possible causes of narrow host specialization in Antliarhinus zamiae (Thunberg) and A. signatus Gyllenhal, two species which develop exclusively on the ovules of their cycad hosts.en_ZA
dc.identifier.apacitationDonaldson, J. S. (1991). <i>Adaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae)</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/8399en_ZA
dc.identifier.chicagocitationDonaldson, John Sidney. <i>"Adaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae)."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 1991. http://hdl.handle.net/11427/8399en_ZA
dc.identifier.citationDonaldson, J. 1991. Adaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae). University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Donaldson, John Sidney AB - This thesis deals with host relationships in an enigmatic and seemingly primitive group of weevils belonging to the genus Antliarhinus (Coleoptera: Brentidae). These beetles occur only on species of the cycad genus Encephalartos and appear to retain an ancient association with cycads, a group of plants that were widespread in the Mesozoic era (ca. 200 MYA) before the rise of the angiosperms and which are now represented by 11 genera with relict distributions in the tropics and sub-tropics. The primary aim of this research was to determine the possible causes of narrow host specialization in Antliarhinus zamiae (Thunberg) and A. signatus Gyllenhal, two species which develop exclusively on the ovules of their cycad hosts. DA - 1991 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1991 T1 - Adaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae) TI - Adaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae) UR - http://hdl.handle.net/11427/8399 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/8399
dc.identifier.vancouvercitationDonaldson JS. Adaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae). [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 1991 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/8399en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Biological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherZoologyen_ZA
dc.titleAdaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae)en_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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