Experientia

, Volume 41, Issue 6, pp 760–762 | Cite as

Pollen-collecting by stingless bees on cacao flowers

  • A. M. Young
Short Communications Ethology, Ecology, Natural Product Chemistry

Summary

Stingless bees (Trigona jaty) routinely visit the flowers ofTheobroma cacao (Sterculiaceae) in the Atlantic lowlands of Costa Rica. The bees collect pollen and behave as pollen thieves in flowers well exposed to direct sunlight in cacao plantations, and avoid flowers in heavy shade. Pollination rates are maximized, however, in heavy shade due to the high abundance of the small-bodied pollinating midges (Ceratopogonidae and Cecidomyiidae) found in such places. Pollen-thieving by stingless bees, therefore, may only impact on fruit set in cacao trees in direct sunlight, with only minimal to no impact in areas of cacao where natural pollinator activity is high.

Key words

Trigona jaty pollination cacao sunlight shade 

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References

  1. 1.
    Faegri, K., and Van der Pijl, L., The Principles of Pollination Ecology. Pergamon Press, London 1966.Google Scholar
  2. 2.
    Inouye, D. W., Ecology61 (1980) 1251.Google Scholar
  3. 3.
    McDade, L. A., and Kinsman, S., Evolution34 (1980) 944.Google Scholar
  4. 4.
    Barrows, E. M., Biotropica8 (1976) 132.Google Scholar
  5. 5.
    Hernandez, H. M., and Toledo, V. M., Ann. Mo. bot. Gdn66 (1979) 512.Google Scholar
  6. 6.
    Young, A. M., Biotropica15 (1983) 78.Google Scholar
  7. 7.
    Conquist, A., An integrated System of Classification of Flowering Plants. Columbia Univ. Press, New York 1981.Google Scholar
  8. 8.
    Posnette, A. F., Trop. Agricult. (Trinidad)21 (1944) 115.Google Scholar
  9. 9.
    Entwistle, P. F., Pests of Cocoa. Longman, London 1972.Google Scholar
  10. 10.
    Wellensiek, S. J., Archf Koffiecult. Indonesië6 (1932) 87.Google Scholar
  11. 11.
    Young, A. M., J. appl. Ecol.20 (1983) 801.Google Scholar
  12. 12.
    Proctor, M., and Yeo, P., The Pollination of Flowers. Taplinger, New York 1972.Google Scholar
  13. 13.
    Soria, S. de J., Revta Theobroma (Brasil)5 (1975) 12.Google Scholar
  14. 14.
    Young, A. M., J. appl. Ecol.18 (1981) 149.Google Scholar
  15. 15.
    Young, A. M., Unpublished observations.Google Scholar
  16. 16.
    Wille, A., A. Rev. Ent.28 (1983) 41.Google Scholar
  17. 17.
    Winder, J. A., PNAS24 (1978) 518.Google Scholar
  18. 18.
    Young, A. M., Proc. ent. Soc. Wash. (D.C.)87 (1985) 49.Google Scholar
  19. 19.
    Young, A. M., Schaller, M., and Strand, M., Am. J. Bot.17 (1984) 466.Google Scholar
  20. 20.
    Downes, J. A., Trans. R. ent. Soc. Lond.106 (1955) 439.Google Scholar
  21. 21.
    Kaufmann, T., Turrialba (Costa Rica)25 (1975) 90.Google Scholar
  22. 22.
    Hernandez, J., Diss. Univ. Wisconsin, Madison 1965.Google Scholar
  23. 23.
    Young, A. M., J. appl. Ecol.19 (1982) 47.Google Scholar
  24. 24.
    Addison, G. O., and Tavares, R. M., Bolm téc. Inst. agron. N. (Belem, Brasil)25 (1951) 3.Google Scholar
  25. 25.
    Bystrak, P. G., and Wirth, W. W., USDA Tech. Bull.1591 (1978).Google Scholar
  26. 26.
    Taylor, A. S., Turrialba (Costa Rica)10 (1965) 1.Google Scholar
  27. 27.
    Taroda, N., and Gibbs, P. E., New Physiol.90 (1982) 735.Google Scholar
  28. 28.
    Wilson, E. O., The Insect Societies. Harvard, Cambridge, Mass. 1971.Google Scholar
  29. 29.
    Kevan, P. G., and Baker, H. G., A. Rev. Ent.28 (1983) 407.Google Scholar

Copyright information

© Birkhäuser Verlag Basel 1985

Authors and Affiliations

  • A. M. Young
    • 1
  1. 1.Intertebrate Zoology SectionMilwaukee Public MuseumMilwaukeeUSA

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