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Meteorological factors influencing host-seeking activity of female Simulium luggeri (Diptera: Simuliidae)



Meteorological factors influencing host-seeking activity of female Simulium luggeri (Diptera: Simuliidae)



Journal of Medical Entomology 28(6): 831-840



The influence of selected meteorological variables on host-seeking activity of parous and nulliparous female Simulium luggeri at cattle bait was studied in central Saskatchewan. Variability in the pattern of diurnal host-seeking probably was attributable to the secondary influence of meteorological parameters on endogenous rhythms that are primarily stimulated by illumination. Although some differences occurred, nulliparous and parous female S. luggeri activity was similarly influenced by the meteorological factors measured. The most important limiting factors were wind speeds > 15 km/h, followed by temperatures <20 degrees C. When values were outside of these thresholds, saturation deficit, cloud cover, barometric pressure, and illumination became influential. Parous S. luggeri appeared to be more tolerant of dry conditions than nulliparous individuals. Seasonal differences, site location (exposed versus protected), and varied interactions among environmental factors contributed to the inconsistent relationships among meterological variables and black fly host-seeking activity.

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Accession: 002158756

Download citation: RISBibTeXText

PMID: 1770519

DOI: 10.1093/jmedent/28.6.831



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