Population Dynamics of Emerging Spider Mite Pest Tetranychus Udaipurensis gupta & Gupta
DOI:
https://doi.org/10.55446/IJE.2023.774Keywords:
Tetranychus udaipurensis, Emerging Spider Mite, Developmental Biology, Demography, French Bean, Ridge Gourd, Temprature, Humidity, Longevity, Fecundity, Sex Ratio.Abstract
Temperature related development and demography of emerging spider mite pest Tetranychus udaipurensis Gupta and Gupta were studied on two vegetable host plants ridge gourd and French bean at four different temperature (22º-34ºC)and humidity conditions (67-80%). Development of T. udaipurensis female was faster-7.31 days on French bean and 7.42 days on ridge gourd, respectively at 34ºC. For reproduction (female longevity, fecundity and sex ratio) and demography, the favourable temperature range was 26º-30ºC. Chief demographic parameters viz., mean generation time, doubling time, net reproduction rate and intrinsic rate of natural increase on the preferred host French bean was 16 to 20 and 2.98 to 3.80, 42 to 48 mites and 0.200 to 0.248 female offsprings/ day, respectively. Under the consequence of changing climatic conditions, T.udaipurensis might emerge as potential pest of vegetable crops, more particularly of French bean.
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