Insect pollination in the African cycad Encephalartos frederici-guilielmi Lehm

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dc.contributor.authorSuinyuy, T N
dc.contributor.authorDonaldson, J S
dc.contributor.authorJohnson, S D
dc.date.accessioned2018-03-23T09:15:18Z
dc.date.available2018-03-23T09:15:18Z
dc.date.issued2009
dc.date.updated2016-01-14T08:53:34Z
dc.description.abstractStudies of the pollination ecology of the South African cycad, Encephalartos friderici-guilielmi Lehm, were carried out to determine the role played by insects and to identify the key pollinators. Surveys of insects on the male and female cones at the time of pollination indicated that three beetle species were present in sufficient numbers during pollination to be potential pollinators, i.e. an undescribed Erotylidae sp. (Cucujoidea), Metacucujus encephalarti (Cucujoidea), and Porthetes hispidus (Curculionidae). Pollen laden specimens of all three species were found on female cones with mean pollen loads ranging between 391 and 1019 pollen grains per beetle. In behavioural experiments, individuals of P. hispidus and M. encephalarti deposited fluorescent dye on the micropyles of receptive ovules. Enclosure of pollen laden specimens of P. hispidus, M. encephalarti, or Erotylidae sp. nov. on female cones resulted in seed set that was statistically similar to open controls and significantly higher than insect exclusion treatments. These data support the conclusion that E. friderici-guilielmi is insect pollinated and provide further evidence for the role of cucujoid (Erotylidae, Boganiidae) and curculionoid (Porthetes) beetles in the pollination of Encephalartos spp.
dc.identifierhttp://dx.doi.org/10.1016/j.sajb.2009.08.005
dc.identifier.apacitationSuinyuy, T. N., Donaldson, J. S., & Johnson, S. D. (2009). Insect pollination in the African cycad Encephalartos frederici-guilielmi Lehm. <i>South African Journal of Botany</i>, http://hdl.handle.net/11427/27708en_ZA
dc.identifier.chicagocitationSuinyuy, T N, J S Donaldson, and S D Johnson "Insect pollination in the African cycad Encephalartos frederici-guilielmi Lehm." <i>South African Journal of Botany</i> (2009) http://hdl.handle.net/11427/27708en_ZA
dc.identifier.citationSuinyuy, T. N., Donaldson, J. S., & Johnson, S. D. (2009). Insect pollination in the African cycad Encephalartos friderici-guilielmi Lehm. South African Journal of Botany, 75(4), 682-688.
dc.identifier.ris TY - AU - Suinyuy, T N AU - Donaldson, J S AU - Johnson, S D AB - Studies of the pollination ecology of the South African cycad, Encephalartos friderici-guilielmi Lehm, were carried out to determine the role played by insects and to identify the key pollinators. Surveys of insects on the male and female cones at the time of pollination indicated that three beetle species were present in sufficient numbers during pollination to be potential pollinators, i.e. an undescribed Erotylidae sp. (Cucujoidea), Metacucujus encephalarti (Cucujoidea), and Porthetes hispidus (Curculionidae). Pollen laden specimens of all three species were found on female cones with mean pollen loads ranging between 391 and 1019 pollen grains per beetle. In behavioural experiments, individuals of P. hispidus and M. encephalarti deposited fluorescent dye on the micropyles of receptive ovules. Enclosure of pollen laden specimens of P. hispidus, M. encephalarti, or Erotylidae sp. nov. on female cones resulted in seed set that was statistically similar to open controls and significantly higher than insect exclusion treatments. These data support the conclusion that E. friderici-guilielmi is insect pollinated and provide further evidence for the role of cucujoid (Erotylidae, Boganiidae) and curculionoid (Porthetes) beetles in the pollination of Encephalartos spp. DA - 2009 DB - OpenUCT DP - University of Cape Town J1 - South African Journal of Botany LK - https://open.uct.ac.za PB - University of Cape Town PY - 2009 T1 - Insect pollination in the African cycad Encephalartos frederici-guilielmi Lehm TI - Insect pollination in the African cycad Encephalartos frederici-guilielmi Lehm UR - http://hdl.handle.net/11427/27708 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/27708
dc.identifier.vancouvercitationSuinyuy TN, Donaldson JS, Johnson SD. Insect pollination in the African cycad Encephalartos frederici-guilielmi Lehm. South African Journal of Botany. 2009; http://hdl.handle.net/11427/27708.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Biological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.sourceSouth African Journal of Botany
dc.source.urihttps://www.journals.elsevier.com/south-african-journal-of-botany
dc.subject.otherCycad pollination
dc.subject.otherEncephalartos friderici-gulielmi
dc.subject.otherErotylidae beetle
dc.subject.otherMetacucujus encephalarti
dc.subject.otherPorthetes hispidus
dc.subject.otherZamiaceae
dc.titleInsect pollination in the African cycad Encephalartos frederici-guilielmi Lehm
dc.typeJournal Article
dc.type.qualificationnameJournal Article
uct.type.filetypeText
uct.type.filetypeImage
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