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Inversion polymorphism and circadian flight activity in the mosquito Anopheles stephensi List. (Diptera, Culicidae)

Published online by Cambridge University Press:  10 July 2009

M. D. R. Jones
M. D. R. Jones
Affiliation:
School of Biological Sciences, University of Sussex, Brighton BN1 9QG, England
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Abstract

Circadian flight activity in Anopheles stephensi List. has been investigated using the acoustic aotograph technique. In alternating 12 h light: 12 h dark (50 or 200 lx), both sexes are active during the dark period, with peaks of activity following light-off and light-on. Cyclical activity persists in constant dark and is inhibited and reset by prolonging the light period. There are small differences between the carriers of the alternative chromosomal arrangements 2R+ ( +/+) and 2Rb (b/b) and between the sexes. In +/+ females the period of the cycle in constant dark is approximately half-an-hour longer and, in LD 12:12, there is less activity at light-on than in both sexes of b/b or in +/+ males. The +/+ males appear to be less susceptible to the inhibitory effect of prolonging the light period, although the cycle is reset.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 64 , Issue 2 , October 1974 , pp. 305 - 311
Copyright
Copyright © Cambridge University Press 1974

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