Effect of temperature on imago life span, fecundity and reproduction rate of greenhouse whitefly (Trialeurodes vaporariorum W.)
2006
Peric, P.,Institut za pesticide i zastitu zivotne sredine, Beograd (Serbia)
Imago life span, fecundity and survival rate of the different developmental stages and average abundance of female offspring of greenhouse whitefly (Trialeurodes vaporariorum) were studied at three constant (18, 22 and 27 deg C) and one alternating (18/7 deg C) temperature. Temperature highs are inversely proportionate to imago life span. Temperature increase from 18/7 deg C to 27 deg C decreased the whitefly life span 3.3-fold. Under 18 deg C and 22 deg C, whitefly laid eggs most abundantly (147 and 126, respectively), while fecundity decreased under lower and higher temperatures. Half the offspring of the investigated whitefly laboratory strain (49.5%) were males, which resulted in lower values of reproduction and growth rates of the whitefly strain. Optimum development of greenhouse whitefly was achieved at 18 deg C.
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