Surveillance studies of Orthopodomyia signifera with comparisons to Aedes sierrensis.
The oviposition behaviors of Orthopodomyia signifera and Aedes sierrensis were examined with ovitraps and larval surveys during a five-year field study in northern California. Ovipositional periodicity was found to be an important factor affecting the segregation of the species into tree holes that were temporarily (Ae. sierrensis only) or permanently (both species) filled with water. Orthopodomyia signifera females also used cues associated with the permanence of the habitat when selecting oviposition sites. The distributions of the eggs of each species along horizontal and vertical transects did not indicate that interspecific competition affected oviposition site selection. The data indicate that temporal partitioning of larval development may reduce interspecific competition. Ovitraps were determined to be more sensitive tools for surveillance of Or. signifera than larval surveys, CO2-baited Fay traps and CDC light traps.
Woodward
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DL
Lake County Vector Control District, Lakeport, CA 95453, USA.
Colwell
A E
AE
Anderson
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NL
D000818:Animals; D009033:Culicidae; D004777:Environment; D005260:Female; D007303:Insect Vectors; D010058:Oviposition; D011157:Population Dynamics; D014197:Trees; D014867:Water
D014867:Water