Patterns of Sandfly Distribution in Tropical Forest - a Causal Hypothesis

J MEMMOTT*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

12 Citations (Scopus)

Abstract

1. In tropical rain forest, phlebotomine sandflies (Diptera: Psychodidae), such as Lutzomyia vespertilionis and L.ylephiletor, have an aggregated distribution on their tree buttress diurnal resting sites, as studied during 1987-88 at Finca la Selva in the Caribbean lowlands of Costa Rica.

2. Experimental transfer of flies to trees not used as resting sites indicated that many apparently suitable sites remain unoccupied.

3. Observations of sandflies on the buttresses revealed that males and females are juxtaposed more frequently than expected by chance alone. Courtship behaviour by three of the four species of sandfly studied was observed on the buttresses.

4. It is suggested that the use of buttresses as swarming sites for mating behaviour is more likely to account for the observed distribution patterns of sandflies than their use of buttresses simply as diurnal resting sites.

Original languageEnglish
Pages (from-to)188-194
Number of pages7
JournalMedical and Veterinary Entomology
Volume6
Issue number3
Publication statusPublished - Jul 1992

Keywords

  • LUTZOMYIA-SPP
  • PHLEBOTOMINAE
  • AGGREGATED DISTRIBUTION
  • SWARMING SITES
  • TREE BUTTRESS
  • TROPICAL RAIN FOREST
  • COSTA-RICA

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