title: Diel oviposition patterns of Aedes albopictus (Skuse) and Aedes triseriatus (Say) in the laboratory and the field.
abstract: The oviposition patterns of Aedes albopictus and Aedes triseriatus were observed in preliminary field experiments during the summer of 1995 and in the laboratory the following winter. Aedes albopictus exhibited a diel periodicity of oviposition in the field, ovipositing a significantly greater number of eggs during the day than during the night (P = 0.0001). Laboratory observations for 40 consecutive hours indicated that Ae. albopictus oviposited only during the hours of light, with a broad peak of oviposition activity occurring in mid-afternoon. Aedes triseriatus, however, oviposited during all periods of the day and night in the field. A significantly greater number of eggs were oviposited in traps open 24 hours than in traps open only during the day (P = 0.01), whereas there was no significant difference in the number of eggs deposited in traps open 24 hours and those open only during the night (P = 0.14). In the laboratory, Ae. triseriatus oviposited during all periods of light and dark, with a distinct peak of oviposition activity occurring during the evening crepuscular period.
authors.affiliation: Department of Entomology, North Carolina State University, Raleigh 27695-7647, USA.
authors.forename: J D
authors.initials: JD
authors.lastname: Trexler
authors.forename: C S
authors.initials: CS
authors.lastname: Apperson
authors.forename: C
authors.initials: C
authors.lastname: Schal
mesh_terms: D000330:Aedes / Q000502:physiology*; D000818:Animals; D002940:Circadian Rhythm; D005260:Female; D010058:Oviposition