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Host-preference and density of woodrose-forming mistletoes (Loranthaceae) on savanna vegetation, South Africa

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Abstract

In the Bushbuckridge region of South Africa host preference and density of two woodrose-forming mistletoes, Erianthemum dregei (Eckl. & Zeyh.) V. Tieghem and Pedistylis galpinii (Schinz ex Sprague) was quantified in relation to land-use (harvested or unharvested), rainfall (high > 660 or low < 660 mm year−1) and catenal position (top or lower slope). These two mistletoes are generalist hemi-parasites of savanna trees and shrubs occurring on 25 and 17 hosts respectively, seven of which are shared. Thirty-six percent of woody plant species recorded were found to be hosts. Although Sclerocarya birrea (A. Rich.) Hochst. comprised only 4% of woody plant density in the environment, it was the principal host for both mistletoes, accounting for 71% of total E. dregei and 42% of P. galpinii infection. Mistletoe infection relative to density of Ficus stuhlmanii, Trichilia emetica and Cassine transvaalensis indicated that these were preferential hosts to S. birrea. Mistletoe host preference was negatively correlated with host wood density. Mistletoe number per tree had a weak relationship to canopy size. Mistletoes of all size classes were denser at high rainfall relative to low rainfall sites. Interestingly, the overall mistletoe size class distribution was similar between harvested and unharvested sites. The ratio of living to dead mistletoe was 2 to 1 for E. dregei and 1.5 to 1 for P. galpinii. There are sufficient dead mistletoes in unharvested and harvested areas to satisfy present market demand. Living E. dregei predominated in harvested rather than unharvested areas suggesting that current-harvesting levels had little or no negative effect on the population. In contrast, P. galpinii was denser in unharvested areas possibly owing to its higher market value and thus higher harvesting levels.

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References

  • Banks D.I., Griffin N.J., Shackleton C.M., Skackleton S.E. and Mavrandonis J.M. 1996. Wood supply and demand around two rural settlements in a semi-arid savanna, South Africa. Biomass and Bioenergy 11: 319–331.

    Google Scholar 

  • Briggs J.D. 1985. University of Bristol Kenya Expedition 1982. Supplementary report. University of Bristol, United Kingdom.

    Google Scholar 

  • Calvin C.L. and Wilson C.A. 1995. Comparative morphology of attachment structures in the African Loranthaceae. American Journal of Botany 82: 14–15.

    Google Scholar 

  • Campbell B.M. and Du Toit R.F. 1988. Relationships between wood resources and use of species for construction and fuel in the communal lands of Zimbabwe. Monogr. Syst. Bot. Missouri Bot. Gard. 25: 331–341.

    Google Scholar 

  • Dean W.R.J., Midgley J.J. and Stock W.D. 1994. The distribution of mistletoes in South Africa: patterns of species richness and host choice. Journal of Biogeography 21: 503–510.

    Google Scholar 

  • Development Bank of South Africa (DBSA) 1989. Development information: Region G. Institute for Development. Research Division: Data research. Information generation department. Halfway House.

  • Dzerefos C.M. 1996. Distribution, establishment, growth and utilisation of mistletoes (Loranthaceae) in the Transvaal lowveld. MSc Dissertation, University of the Witwatersrand, Johannesburg.

    Google Scholar 

  • Dzerefos C.M. and Witkowski E.T.F. 1997. Development and anatomy of the attachment structure of woodrose-producing mistletoes. South African Journal of Botany 63: 416–420.

    Google Scholar 

  • Dzerefos C.M., Witkowski E.T.F. and Shackleton C.M. 1998. Seedling survival, post-harvest recovery and growth rates of the woodrose-producing mistletoe Erianthemum dregei (Loranthaceae) on Sclerocarya birrea. South African Journal of Botany 64: 303–307.

    Google Scholar 

  • Dzerefos C.M., Shackleton C.M. and Witkowski E.T.F. 1999. Sustainable utilisation of woodrose-producing mistletoes (Loranthaceae) in South Africa. Economic Botany 53: 439–447.

    Google Scholar 

  • Ferguson K.G. and Hemmerly T.E. 1976. Host specificity of mistletoe in middle Tennessee II: Maury County. Castanea 41: 71–72.

    Google Scholar 

  • Germishuizen G., Leistner O.A., March H. and Scott M. 1994a. Erianthemum dregei. In: Leistner O.A. (ed.), Flowering Plants of Africa. National Botanical Institute, Cape Town, pp. 16–19.

    Google Scholar 

  • Germishuizen G., Leistner O.A. and Scott M. 1994b. Pedistylis galpinii. In: Leistner O.A. (ed.), Flowering Plants of Africa. National Botanical Institute, Cape Town, pp. 6–9.

    Google Scholar 

  • Godschalk S.K.B. 1983. Mistletoe dispersal by birds in South Africa. In: Calder M. and Bernhardt P. (eds), The Biology of Mistletoes. Academic Press, Australia, pp. 117–128.

    Google Scholar 

  • Kuijt J. 1964. Critical observations of parasitism of New World Mistletoes. Can. J. Bot. 42: 1243–1287.

    Google Scholar 

  • Kuijt J. 1969. The Biology of Parasitic Flowering Plants. University of California Press, Berkley, California, USA.

    Google Scholar 

  • Lamont B. 1982. Host range and germination requirements of some South African mistletoes. South African Journal of Science 78: 41–42.

    Google Scholar 

  • Lamont B. 1985. Host distribution, potassium content, water relations and control of two co-occurring mistletoe species. Journal of the Royal Society of Western Australia 68: 21–25.

    Google Scholar 

  • Lamont B. and Southall K.J. 1982. Biology of the mistletoe Amyema preissii on road verges and undisturbed vegetation. Search 13: 87–88

    Google Scholar 

  • Lamont B.B., Rees R.G., Witkowski E.T.F. and Whitten V. 1994a. Comparative size, fecundity and ecophysiology of roadside plants of Banksia hookeriana. J. Appl. Ecol. 31: 137–144.

    Google Scholar 

  • Lamont B.B., Whitten V.A., Witkowski E.T.F., Rees R.G. and Enright N.J. 1994b. Regional and local (road verge) effects on size and fecundity of Banksia menziesii. Aust. J. Ecol. 19: 197–205.

    Google Scholar 

  • Luoga E.J., Witkowski E.T.F. and Balkwill K. 2001. Harvested and standing wood stocks in protected and communal miombo woodlands of eastern Tanzania. Forest Ecology and Management 5652: 1–16.

    Google Scholar 

  • Luoga E.J., Witkowski E.T.F., Balkwill K. and Malimbwi R.E. Population dynamics of three highly utilized miombo (African savanna) tree species: the role of land-use, plant size and silvicultural prescriptions. Journal of Tropical Science (submitted).

  • Luoga E.J. 2000. The effects of human disturbances on diversity and dynamics of eastern Tanzania miombo arborescent species. PhD Dissertation, University of the Witwatersrand, Johannesburg.

    Google Scholar 

  • Menzies B.P. 1954. Seedling development and haustorial system of Loranthus micranthus Hook. F. Phytomorphology 4: 397–409

    Google Scholar 

  • Monteiro R.F., Martins R.P. and Yamamoto K. 1992. Host speci-ficity and seed dispersal of Psittacanthus robustus (Loranthaceae) in south-east Brazil. J. Trop. Ecol. 8: 307–314.

    Google Scholar 

  • Norton D.A. and Stafford Smith M. 1999. Why might roadside mulgas be better mistletoe hosts? Aust. J. Ecol. 24: 193–198.

    Google Scholar 

  • O'Brien E.M. 1993. Climatic gradients in plant species richness: towards an explanation based on an analysis of southern Africa's woody flora. Journal of Biogeography 20: 181–198.

    Google Scholar 

  • Petrides G.A. 1975. Principal foods versus preferred foods and their relations to stocking rate and range condition. Biological Conservation 7: 161–169.

    Google Scholar 

  • Reid N. 1987. Safe sites for Amyema quandang (Lindl.) Van Tiegh (Loranthaceae) seeds: dispersal requirements and post dispersal mortality. In:Weber H.C. and Forstreuter W. (eds), Proceedings of the Fourth International Symposium of Parasitic Flowering Plants. Philipps-Universitat, Marburg, pp. 691–699

    Google Scholar 

  • Reid N. and Lange R.T. 1988. Host specificity, dispersion and persistence through drought of two arid zone mistletoes. Aust. J. Bot. 36: 299–313.

    Google Scholar 

  • Reid N., Stafford-Smith M. and Yan Z. 1995. Ecology and population biology of mistletoes. In: Lowman M.D. and Nadkarni N.M. (eds), Forest Canopies. Academic Press, New York, pp. 285–310.

    Google Scholar 

  • Reid N. and Stafford Smith M. 2000. Population dynamics of an arid zone mistletoe (Amyema preissii, Loranthaceae) and its host Acacia victoriae (Mimosaceae). Aust. J. Bot. 48: 45–58.

    Google Scholar 

  • Room P.M. 1971. Some physiological aspects of the relationship between cocoa, Theobroma cacao and the mistletoe Tapinanthus bangwensis. Annals of Botany 35: 169–174

    Google Scholar 

  • Room P.M. 1973. Ecology of the mistletoe Tapinanthus bangwensis growing on cocoa in Ghana. J. Ecol. 61: 729–742

    Google Scholar 

  • SAS Institute 1985. SAS/STAT Guide for personal computers. Version 6. Cary, North Carolina.

    Google Scholar 

  • Schönland S. 1907. On so-called "wood-flowers" on Burkea africana Hook, caused by Loranthus dregei E. & Z. Albany Museum 2: 435–499

    Google Scholar 

  • Shackleton C.M. 1996. Potential stimulation of local rural economies by harvesting secondary products: A case study of the central Transvaal lowveld, South Africa. Ambio 25: 33–38

    Google Scholar 

  • Shackleton C.M., Griffin N.J., Banks D.I., Mavrandonis J.M. and Shackleton S.E. 1994. Community structure and species composition along a disturbance gradient in a communally managed South African savanna. Vegetatio 115: 157–167.

    Google Scholar 

  • Thoday D. 1960. Modes of union and interaction between parasite and host in the Loranthaceae. V. Some South African Loranthoideae. Proceedings of the Royal Botanical Society 152: 143.

    Google Scholar 

  • Thomson V.E. and Mahall B.E. 1983. Host specificity by a mistletoe, Phoradendron villosum on three oak species in California. Botanical Gazette 144: 124–131

    Google Scholar 

  • Tollman S.M., Herbst K. and Garrenne M. 1995. The Agincourt Demographic and Health Study. Phase 1. Monograph. Health Services Development Unit, Acornhoek.

    Google Scholar 

  • van Rooyen N. and Bredenkamp G. 1996. Mixed Lowveld Bushveld.In: Low A.B. and Rebelo A.G. (eds), Vegetation of South Africa, Lesotho and Swaziland. A Companion to the Vegetation Map of South Africa, Lesotho and Swaziland. Department of Environmental Affairs and Tourism, Pretoria, p. 27.

    Google Scholar 

  • van Wyk P. 1984. Trees of the Kruger National Park. Struik, Cape Town.

    Google Scholar 

  • Visser J. 1986. South African parasitic flowering plants. Juta, Johannesburg.

    Google Scholar 

  • Wiens D. and Tolken H.R. 1979. Loranthaceae. In: Leistner O.A. (ed.), Flora of Southern Africa. Department of Agricultural Services, Pretoria, pp. 1–35.

    Google Scholar 

  • Williams C.N. 1963. Development of Tapinathus bangwensis (Engler and Krause) Danser and contact with the host. Annals of Botany 27: 641–646.

    Google Scholar 

  • Wilson K.B. 1989. Trees in fields in southern Zimbabwe. J. Southern African Studies 15: 369–385.

    Google Scholar 

  • Witkowski E.T.F. and O'Connor T.G. 1996. Topo-edaphic, floristic and physiognomic gradients of woody plants in a semi-arid African savanna woodland. Vegetatio 124: 9–23

    Google Scholar 

  • Yan Z. 1990. Host specificity of Lysiana exocarpi subsp. exocarpi and other mistletoes in southern Australia. Aust. J. Bot. 38: 475–486

    Google Scholar 

  • Yan Z. 1993. Resistance to haustorial development of two mistletoes, Amyema preissii (Miq.) Tieghem and Lysiana exocarpi (Behr.) Tieghem (Loranthaceae), on host and nonhost species. International Journal of Plant Science 154: 386–394.

    Google Scholar 

  • Zakaullah, Haque M.I. and Badshah K. 1984. Loranthus parasitism– a challenge to the development of economic tree resources in the Rawalpindi east region. Pakistan J. Forestry 21: 101–109.

    Google Scholar 

Download references

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Dzerefos, C., Witkowski, E. & Shackleton, C. Host-preference and density of woodrose-forming mistletoes (Loranthaceae) on savanna vegetation, South Africa. Plant Ecology 167, 163–177 (2003). https://doi.org/10.1023/A:1023991514968

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