African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6691

Full Length Research Paper

Floral activity of Chrysomya putoria Wiedemann, 1830 (Diptera: Calliphoridae) enhances the pollination and fruit set rate of Ricinus communis L., 1753 (Euphorbiaceae)

Michelson AZO’O ELA
  • Michelson AZO’O ELA
  • Department of Biological Sciences, Faculty of Science, University of Maroua, P. O. Box 814 Maroua, Cameroon.
  • Google Scholar
Bouba AINE BIDIKI
  • Bouba AINE BIDIKI
  • Department of Life and Earth Sciences, Higher Teacher’s Training College, University of Maroua, P. O. Box 55 Maroua, Cameroon.
  • Google Scholar
Beaudelaine Stéphanie KENGNI
  • Beaudelaine Stéphanie KENGNI
  • Department of Biological Sciences, Faculty of Science, University of Maroua, P. O. Box 814 Maroua, Cameroon.
  • Google Scholar
Sidonie FAMENI TOPE
  • Sidonie FAMENI TOPE
  • Department of Biological Sciences, Faculty of Science, University of Maroua, P. O. Box 814 Maroua, Cameroon.
  • Google Scholar
Arianna THOMAS-CABIANCA
  • Arianna THOMAS-CABIANCA
  • Centro de Ecolog?a Instituto Venezolano de Investigaciones Cient?ficas (IVIC) Apartado 20632, Caracas 1020, Venezuela.
  • Google Scholar
Fernand-Nestor TCHUENGUEM FOHOUO
  • Fernand-Nestor TCHUENGUEM FOHOUO
  • Department of Biological Sciences, Faculty of Science, University of Ngaoundéré, P. O. Box 454 Ngaoundéré, Cameroon.
  • Google Scholar


  •  Received: 02 November 2021
  •  Accepted: 20 January 2022
  •  Published: 30 June 2022

Abstract

Experiments were conducted to study the foraging behaviour of blowfly species, Chrysomya putoria (Diptera: Calliphoridae) on Ricinus communis (Euphorbiaceae) in Sudano-Sahelian area of Cameroon in 2017 and 2018. To do so, castor bean plants were flagged and fly foraging parameters were recorded. The effects of blowfly activity on pollination and fruiting rate of R. communis were estimated by comparing unrestricted and restricted racemes. Chrysomya putoria accounted for 82.33% of the total number of flower visits among the 15 anthophilous insects recorded. Pollen and nectar foraging occurred throughout the day, with a major peak at 8-9 am. The density of foragers was about 300 individuals per plant. The mean duration of a flower visit for male and female flowers was significantly different and resulted in a foraging speed of 3-5 flowers/minute which increases cross-pollination of R. communis. The floral activity of C. putoria improved the fruiting rate of castor bean by about 11% and conversely, this plant appeared as an important food source for the conservation of its main flower-visitor. Castor bean and the blowfly species seem to have a mutualistic relationship.

Key words: Blowfly, castor bean, cross-pollination, geitonogamy, insect-assist anemophily, yield.