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dc.contributor.supervisor Brust, R.A. (Entomology) en_US
dc.contributor.author Galka, Brian Edward
dc.date.accessioned 2016-10-03T21:14:42Z
dc.date.available 2016-10-03T21:14:42Z
dc.date.issued 1986
dc.identifier.uri http://hdl.handle.net/1993/31868
dc.description.abstract Aedes togoi (Theobald) from Vancouver, B.C. may enter diapause in either the egg or the larval stage. Larval diapause occurred in the 4th instar, when immatures were maintained at 16°C or less, at photoperiods shorter than 12h light/day. The critical photoperiod was calculated as LD 10.9:13.1 at 16°C. Larvae which did not pupate after 40 days at the experimental conditions were assessed as being in diapause. Non-diapause larvae reached the pupal stage in 17-20 days at 16°C. At 14°C, 100% of the larvae diapaused at LD 10:14. Temperatures of 18°C or higher, at LD 10:14, resulted in no larval diapause. Embryonic diapause resulted when immatures, adults and eggs were maintained at temperatures ranging from 22 to 28°C, at photoperiods shorter than 15h light/day. The critical photoperiod was calculated as LD 15.3:8.7 at 25°C, and LD 14.4:9.6 at 22°C. There was no diapause when the population was maintained at 24°C LD 16:8. An experiment was conducted to determine if a simulated dawn/dusk of 90 minutes/day would increase mating success. After three days at the experimental conditions, there was no difference in mating success between populations of males and females maintained with a dawn/dusk period and those maintained at the same photoperiod where the light/dark change was abrupt. en_US
dc.rights info:eu-repo/semantics/openAccess
dc.subject Diapause en_US
dc.subject Aedes togoi en_US
dc.subject Diptera en_US
dc.subject Culicidae en_US
dc.title Induction of embryonic and larval diapause in Aedes togoi (Theobald) (Diptera:Culicidae) en_US
dc.type info:eu-repo/semantics/masterThesis
dc.degree.discipline Entomology en_US
dc.contributor.examiningcommittee MacKay, P.A. (Entomology) Dick, T.A. (Entomology) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note 1986 en_US


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