Hostname: page-component-848d4c4894-x5gtn Total loading time: 0 Render date: 2024-05-13T09:42:04.262Z Has data issue: false hasContentIssue false
  • English
  • Français

MOSQUITOES OF MANITOBA: II. THE EFFECT OF STORAGE TEMPERATURE AND RELATIVE HUMIDITY ON HATCHING OF EGGS OF AEDES VEXANS AND AEDES ABSERRATUS (DIPTERA: CULICIDAE)1

Published online by Cambridge University Press:  31 May 2012

R. A. Brust  and
R. A. Costello
R. A. Brust
Affiliation:
Department of Entomology, University of Manitoba, Winnipeg
R. A. Costello
Affiliation:
Department of Entomology, University of Manitoba, Winnipeg
Get access Rights & Permissions [Opens in a new window]

Abstract

Optimum storage conditions for eggs of Aedes vexans (Meigen) were found to be a temperature of 2 °C and a saturated atmosphere. These conditions are also suitable for storing eggs of Aedes abserratus (Felt and Young) but this species can be stored at lower temperatures. When eggs of both species are stored at 2 °C and placed in a hatching medium at 2 °C, hatching begins in A. abserratus but not in A. vexans. A comparable hatch in the latter occurs at 10°–15 °C. Desiccation and death of A. vexans embryos occur rapidly at a low relative humidity (20%) and a high temperature (21 °C) but slowly at low relative humidity and a low temperature (4 °C). Eggs that lose a substantial amount of water will still hatch and the larvae develop normally, but hatching time is delayed. The hatching time may be twice as long as in eggs kept in a saturated atmosphere at similar temperatures, indicating that embryos must regain some of the lost water before hatching can occur.

Type
Articles
Information
The Canadian Entomologist , Volume 101 , Issue 12 , December 1969 , pp. 1285 - 1291
Copyright
Copyright © Entomological Society of Canada 1969

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Brust, R. A., and Kalpage, K. S.. 1967 a. A rearing method for Aedes abserratus (F. and Y.). Mosquito News 27: 117.Google Scholar
Brust, R. A., and Kalpage, K. S.. 1967 b. New records for Aedes species in Manitoba. Mosquito News 27: 117–118.Google Scholar
Costello, R. A., and Brust, R. A.. 1969. A quantitative study of uptake and loss of water by eggs of Aedes vexans (Diptera: Culicidae). Can. Ent. 101: 1266–1269. (This issue.)CrossRefGoogle Scholar
Horsfall, W. R. 1956. Eggs of floodwater mosquitoes. III. (Diptera, Culicidae). Conditioning and hatching of Aedes vexans. Ann. ent. Soc. Am. 49: 66–71.CrossRefGoogle Scholar
Meola, R. 1964. The influence of temperature and humidity on embryonic longevity in Aedes aegypti. Ann. ent. Soc. Am. 57: 468–472.CrossRefGoogle Scholar
Solomon, M. E. 1951. Control of humidity with potassium hydroxide, sulphuric acid, or other solutions. Bull. ent. Res. 42: 543–554.CrossRefGoogle Scholar
Třpis, M., and Horsfall, W. R.. 1967. Eggs of floodwater mosquitoes (Diptera: Culicidae). XI. Effect of medium on hatching of Aedes sticticus. Ann. ent. Soc. Am. 60: 1150–1152.CrossRefGoogle ScholarPubMed