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Distributional records from the U.S. Air Force ovitrapping program--1990.

C P McHugh1

  • 1Epidemiology Division, U.S. Air Force School of Aerospace Medicine, Brooks Air Force Base, TX 78235.

Journal of the American Mosquito Control Association
|September 1, 1991
PubMed
Summary

Ovitrapping in 1990 found the invasive Aedes albopictus mosquito at 12 U.S. Air Force bases, including a new county record in Oklahoma. Its increasing presence correlated with a decrease in Aedes aegypti populations.

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Area of Science:

  • Medical entomology
  • Vector surveillance
  • Invasive species ecology

Background:

  • The invasive mosquito species Aedes albopictus poses a significant public health threat due to its ability to transmit diseases.
  • Understanding the distribution and population dynamics of Aedes albopictus is crucial for effective vector control strategies.
  • Previous years indicated a concerning trend of increasing Aedes albopictus distribution and abundance.

Purpose of the Study:

  • To survey the presence and distribution of Aedes albopictus and other mosquito species at U.S. Air Force installations in 1990.
  • To document the first occurrence of Aedes albopictus in Oklahoma County.
  • To investigate the relationship between Aedes albopictus and Aedes aegypti populations over time.

Main Methods:

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  • Ovitrapping was employed as the primary surveillance method across 38 U.S. Air Force installations.
  • Mosquito species identification was conducted on collected samples.
  • Data on mosquito presence and abundance were recorded and analyzed.

    • Main Results:

    • Aedes albopictus was detected at 12 of the 38 surveyed installations.
    • A new county record for Aedes albopictus was established at Tinker Air Force Base, Oklahoma.
    • Aedes aegypti was found at 4 installations, and Aedes triseriatus at 14 installations.
    • A significant inverse correlation was observed: Aedes albopictus increased in distribution and abundance, while Aedes aegypti declined over the preceding three years.

    Conclusions:

    • The continued spread of Aedes albopictus across U.S. Air Force installations highlights the need for ongoing surveillance and control efforts.
    • The displacement of Aedes aegypti by Aedes albopictus suggests competitive exclusion, impacting the epidemiology of diseases transmitted by these vectors.
    • The documented presence in Oklahoma underscores the expanding geographic range of this invasive species.