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Flowering phenology and flower predation of Cullenia exarillata (Bombacaceae) by arboreal vertebrates in Western Ghats, India

Published online by Cambridge University Press:  10 July 2009

T. Ganesh  and
Priya Davidar
T. Ganesh
Affiliation:
Salim Ali School of Ecology and Environmental Sciences, Pondicherry University, Kalapet, Pondicherry 605 014, India
Priya Davidar
Affiliation:
Salim Ali School of Ecology and Environmental Sciences, Pondicherry University, Kalapet, Pondicherry 605 014, India
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Abstract

The flowering phenology and flower predation of Cullenia exarillata, a canopy tree at Kakachi in the southern Western Ghats, India, was studied from 1991 to 1993 in relation to general phenological patterns at the community level. Flowering was monitored from 30 marked trees and flower predation estimated from fallen flowers in 40, 1 m2 nets placed under the trees. Flowering occurs in the dry season and coincides with the period of fruit scarcity in the forest. Flowering is synchronous in the population and each tree produces a mean of c. 8730 flowers per tree over a period of c. 47 d. Flowers produced little nectar but the edible fleshy sepals compensated for this. Six species of arboreal mammals and seven species of birds ate the flowers. These consumed 57% of the flower crop of which 37% were completely destroyed. Flower predators could be important in flower fertilization. The overabundance of the flower crop and the timing of flowering, may have evolved as a strategy to satiate predators and enable the flowers to be pollinated during the annual period of fruit scarcity in the forest. This in turn makes Cullenia exarillata a possible keystone species in this forest.

Keywords

arboreal mammalsCullenia exarillataflowering phenologyflower predationIndiakeystone resourcesWestern Ghats
Type
Research Article
Information
Journal of Tropical Ecology , Volume 13 , Issue 3 , May 1997 , pp. 459 - 468
Copyright
Copyright © Cambridge University Press 1997

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References

LITERATURE CITED

Ali, S. & Ripley, S. D. 1987. Handbook of the birds of India and Pakistan. (Compact 2nd edition). Oxford University Press, New Delhi. 737 pp.Google Scholar
Borges, R. 1993. Figs, Malabar giant squirrel, and fruit shortage within two tropical Indian forests. Biotropica 252:183–193.CrossRefGoogle Scholar
Davidar, P., Soubadra, M., Ganesh, T. & Rani Krishnan, M. 1993. Relationship between plant and pollinator in a wet evergreen forest in the southern Western Ghats. Pp. 325–355 in Veeresh, G. K., Umashaanker, R. & Ganeshaiah, K. N. (eds). Pollination in tropics. University of Agricultural Sciences, Bangalore, India.Google Scholar
Ferrari, S. F. & Strier, K. B. 1992. Exploitation of Mabea fistulifera nectar by marmosets (Callithrix flaviceps) and muriquis (Brachyteles arachnoides) in south-east Brazil. Journal of Tropical Ecology 8:225–239.CrossRefGoogle Scholar
Fleming, T. H. & Sosa, V. J. 1994. Effects of nectarivorous and frugivorous mammals on the reproductive success of plants. Journal of Mammalogy 75:845–851.CrossRefGoogle Scholar
Gamble, J. 1928. The Flora of Presidency of Madras. 3 Volumes. Botanical Survey of India, Calcutta. 2017 pp.Google Scholar
Ganesh, T. 1995. Fruiting patterns of canopy trees and fruit use by vertebrates in a wet evergreen forest of the southern Western Ghats, India. Ph.D Thesis, Pondicherry University, Pondicherry, India.Google Scholar
Ganesh, T., Ganesan, R., Soubadra Devy, M., Davidar, P. & Bawa, K. S. 1996. An assessment of plant biodiversity at a mid-elevation evergreen forest of Kalakad Mundanthurai Tiger Reserve, Western Ghats, India. Current Science 71:379–392.Google Scholar
Green, K. M. & Minkowski, K. 1977. The lion-tailed macaque and its south Indian rain forest habitat. Pp. 289–327 in Bourne, G. H. & Rainer, H. S. H. (eds). Primate conservation, Academic Press, New York.Google Scholar
Janson, C. H., Terborgh, J. & Emmons, L. H. 1981. Non-flying mammals as pollinating agents in the Amazonia forest. Biotropica 13(sup):1–6.CrossRefGoogle Scholar
Lambert, F. & Marshall, A. G. 1991. Keystone characteristics of bird-dispersed Ficus in a Malaysian lowland rainforest. Journal of Ecology 79:793–809.CrossRefGoogle Scholar
Menon, S. A. 1993. Ecology and conservation of the endangered liontailed Macaque (Macaca silenus) in the landscape mosaic of Western Ghats, India. PhD. Dissertation. Ohio State University, Ohio, USA.Google Scholar
Oates, J. F., Waterman, P. G. & Choo, G. M. 1980. Food selection by the south Indian leaf-monkey, Presbytis johnii, in relation to leaf chemistry. Oecologia 45:45–56.CrossRefGoogle ScholarPubMed
Petterson, M. W. 1991. Flower herbivory and seed predation in Silent vulgaris (Caryoptaceae): effects of pollination and phenology. Holartic Ecology 14:45–50.Google Scholar
Prater, S. H. 1971. The book of Indian animals: Oxford University Press, Bombay. 324 pp.Google Scholar
Sazima, M. & Sazima, I. 1978. Bat pollination of the passion flower, Passiflora mucronata in southeastern Brazil. Biotropica 10:100–109.CrossRefGoogle Scholar
Terborgh, J. 1986. Keystone plant resources in tropical forest. Pp. 330–344 in Soulé, M. (ed.). Conservation biology: science of scarcity and diversity. Sinauer Associates Inc., Sunderland, Massachusetts.Google Scholar
Terborgh, J. & Stern, M. 1987. The surreptitious life of the saddled-backed tamarin. American Scientist 75:260–269.Google Scholar
Zar, J. H. 1984. Biostatistical analysis. Prentice-Hall, New Jersey. 718 pp.Google Scholar