Oecologia

, Volume 74, Issue 4, pp 507–514

Drought and the organization of tree-hole mosquito communities

  • W. E. Bradshaw
  • C. M. Holzapfel
Original Papers

DOI: 10.1007/BF00380047

Cite this article as:
Bradshaw, W.E. & Holzapfel, C.M. Oecologia (1988) 74: 507. doi:10.1007/BF00380047

Summary

In southeastern North America (North Florida, USA), the duration, frequency, and timing of drought differentially affect the survivorship of pre-adult tree-hole mosquitoes. Drought affects survivorship both by the direct action of dehydration on developing larvae and pupae and by the indirect modulation of predation. The drought-susceptible species, Toxorhynchites rutilus, Orthopodomyia signifera, and Anopheles barberi co-occur in more permanent holes that are larger, with larger, more vertical openings, lower down in larger trees, and contain darker water with higher conductivity, pH, and tannin-lignin content than the holes occupied by Aedes triseriatus that has drought-resistant eggs and rapid larval development. Ovipositing mosquitoes cue on physical and chemical attributes of tree holes independently of host tree species. These same attributes differ among drought-prone and drought-resistant holes but mosquitoes track these attributes more faithfully than the attributes predict tree-hole stability.

Key words

CompetitionPredationDisturbanceStability

Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • W. E. Bradshaw
    • 1
  • C. M. Holzapfel
    • 1
  1. 1.Department of BiologyUniversity of OregonEugeneUSA