Egg hatching of mosquitoes Aedes caspius and Ae. vittatus simulated by water vibrations

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Simple laboratory experiments with eggs of wild-caught Aedes caspius (Pallas) and Aedes vittatus (Bigot) mosquitoes (Diptera: Culicidae) demonstrated that egg hatch rates (i.e. percentage hatching daily) increased significantly in response to water vibrations caused by finger-tip drumming on containers of submerged eggs. When disturbed by daily vibrations for only 30 s, eggs hatched sooner than when they remained flooded or were periodically drained and reflooded without agitation. For autogenous Ae. caspius from saltmarsh, egg hatch rates were three- to four-fold greater for groups of 50 eggs than for solitary eggs, possibly due to chemicals (functional kairomones) emanating from other eggs or larvae. For anautogenous Ae. vittatus from freshwater rock-pools, tapping the container daily (for 30 s each 2 h in 8 h) hatched 93% of eggs, compared with only 42% hatch of eggs agitated only when first flooded or 55% hatch of eggs dried and reflooded three times during 17 days without other disturbance. It is concluded that, apart from flooding and other factors, vibrations - simulating the patter of rainfall - provide a very significant hatching stimulus for Aedes eggs.

Original languageEnglish
Pages (from-to)215-218
Number of pages4
JournalMedical and Veterinary Entomology
Volume15
Issue number2
DOIs
Publication statusPublished - 2001

Keywords

  • Aedes caspius
  • Aedes vittatus
  • Agitation
  • Arabia
  • Eclosion
  • Egg hatching
  • Flooding
  • Mosquitoes
  • Oman
  • Rainfall
  • Water vibrations

ASJC Scopus subject areas

  • Insect Science
  • veterinary(all)

Fingerprint Dive into the research topics of 'Egg hatching of mosquitoes Aedes caspius and Ae. vittatus simulated by water vibrations'. Together they form a unique fingerprint.

  • Cite this