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Seed-dispersal of Vouacapoua americana (Caesalpiniaceae) by caviomorph rodents in French Guiana

Published online by Cambridge University Press:  10 July 2009

Pierre-Michel Forget
Pierre-Michel Forget
Affiliation:
Université Pierre et Marie Curie (Paris 6), Laboratoire de Botanique Tropicale, 12 rue Cuvier, 75005 Paris, France
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Abstract

A possible mutualistic dispersal system between a large-seeded tree of French Guiana, Vouacapoua americana (Caesalpiniaceae), and caviomorph rodents, Myoprocta exilis and Dasyprocta leporina, is described. Mast fruiting of Vouacapoua at the beginning of the wet season coincides with scatter-hoarding seed dispersal. During the wet season, almost 100% of marked seeds on three sites were removed: nearly 70% were buried and the rest were eaten by mammals. Unburied seeds were attacked by insects and/or lost their ability to germinate. Rodents preferred ungerminated seeds, and had no interest in germinated seeds. Seeds were buried individually near natural objects such as palms, branches, logs, lianas, roots and trees. After predation by rodents, seedling distribution did not differ from seed distribution. Most seeds were transported less than 5 m from the feeding plots but some were carried as far as 22.4 m. Between 40 and 85% of dispersed seeds were retrieved during the following month by rodents and eaten. The disinterest of caviomorph rodents in germinated seeds, because of rapid exhaustion of endosperm reserves, prevents feeding from hoarded Vouacapoua during the long dry season when resources are scarce. Seedlings emerging from forgotten or abandoned cached seeds appear to increase the recruitment of Vouacapoua americana.

Keywords

caviomorph rodentsmutualismMyoprocta exilisscatter-hoardingseed-dispersaltropical rain forestVouacapoua americana
Type
Research Article
Information
Journal of Tropical Ecology , Volume 6 , Issue 4 , November 1990 , pp. 459 - 468
Copyright
Copyright © Cambridge University Press 1990

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References

LITERATURE CITED

Brokaw, N. V. L. 1982. The definition of treefall and its effects on measures of forest dynamics. Biotropica 14:158–160.CrossRefGoogle Scholar
Dubost, G. 1988. Ecology and social life of the red acouchy, Myoprocta exilis; comparisons with the orange-rumped agouti, Dasyprocta leporina. Journal of Zoology of London 214:107–123.CrossRefGoogle Scholar
Guillotin, M. 1981. Données écologiques sur les petits rongeurs forestiers terrestres de Guyane fran-çaise. Thèse de 3ème cycle. USTL Montpellier.Google Scholar
Hallwachs, W. 1986. Agoutis (Dasyproctapunctata): the inheritors of guapinol (Hymenaea courbaril: Leguminosae). Pp. 119–135 in Estrada, A. & Fleming, T. H. (eds). Frugivores and seed dispersal. Dr Junk Publishers, The Hague. 392 pp.Google Scholar
Herrera, C. 1985. Determinants of plant-animal coevolution: the case of mutualistic dispersal of seeds by vertebrates. Oikos 44:132–141.CrossRefGoogle Scholar
Husson, A. M. 1978. The mammals of suriname. E. J. Brill, Leiden, 569 pp.CrossRefGoogle Scholar
Janzen, D. H. 1969. Seed-eaters versus seed size, number, toxicity and dispersal. Evolution 23:1–27.Google ScholarPubMed
Janzen, D. H. 1970. Herbivores and the number of tree species in tropical forests. American Naturalist 104:501–528.CrossRefGoogle Scholar
Janzen, D. H. 1974. Tropical blackwater rivers, animals, and mast fruiting by the Dipterocarpaceae. Biotropica 6:69–103.CrossRefGoogle Scholar
Kiltie, R. A. 1981. Distribution of palm fruit on a rain forest floor: why white-lipped peccaries forage near objects. Biotropica 13:141–145.CrossRefGoogle Scholar
Mchargue, L. A. & Hartshorn, G. S. 1983. Seed and seedling ecology of Carapa guianensis. Tur-rialba 33:399–404.Google Scholar
Morris, D. 1962. The behaviour of the green acouchi (Myoprocta pratti) with special reference to scatterhoarding. Zoological Society of London Proceedings 139:701–733.CrossRefGoogle Scholar
Murie, J. O. 1977. Cues used for cache finding by agouti (Dasyprocta punctata). Journal of Mam-malogy 58:95–96.CrossRefGoogle Scholar
Roberts, E. H. 1973. Predicting the storage life of seeds. Seed Science and technology 1:499–514.Google Scholar
Sabatier, D. 1983. Fructification et dissémination en forêt guyanaise. Thèse de 3ème cycle. USTL Montpellier.Google Scholar
Sabatier, D. 1985. Saisonnalité et déterminisme du pic de fructification en forêt guyanaise. Revue d'Ecologie (Terre et vie) 40:289–320.Google Scholar
Smythe, N. 1978. The natural history of the central American agouti (Dasyprocta punctata). Smith-sonian Contributions to Zoology 257, 52 pp.Google Scholar
Sork, V. L. 1985. Germination response in a large-seeded neotropical tree species. Gustavia superba (Lecythidaceae). Biotropica 17:130–136.CrossRefGoogle Scholar