The Canadian Entomologist

Articles

STUDIES OF AEDES TRISERIATUS (DIPTERA: CULICIDAE) OVIPOSITION ATTRACTANTS. EVIDENCE FOR ATTRACTANT PRODUCTION BY KAOLIN-TREATED LARVAE1

Ivan N. McDaniela12, Michael D. Bentleya13, Hai-Poong Leea12 and Mitsuyoshi Yatagaia13

a1 University of Maine, Orono, Maine 04469

Abstract

Larvae of both Aedes triseriatus (Say) and Aedes atropalpus (Coquillett) produce oviposition attractants active for A. triseriatus, even when the larvae are pretreated with kaolin. These experiments demonstrate that the earlier observed attractancy of larval holding waters was not simply due to the presence of waste matter or associated microorganisms from the larval gut. It is further shown that the active material may be extracted directly from the larvae into hexane or ether. It is also demonstrated that the larval produced oviposition attractants of these species are similar in their ability to attract gravid females of A. triseriatus.

(Received September 26 1977)

Footnotes

1 This study was supported in part by research grant 1RO1 AI11740 TMP from the National Institutes of Health, PHS.

2 Depanment of Entomology and Department of Chemistry, respectively.

3 Depanment of Entomology and Department of Chemistry, respectively.