Title: Biology and release of exotic predator Cryptolaemus montrouzieri Mulsant on mealybug Phenacoccus solenopsis Tinsley at Tandojam.
Abstract:Biologyofexoticpredator,Cryptolaemus montrouzieri Mulsant (Coleoptera: Cocccinellidae) was studiedon exoticmealybug,Phenacoccus solenopsisTinsley (Hemiptera: Pseudococcidae) in controlled laboratory c...Biologyofexoticpredator,Cryptolaemus montrouzieri Mulsant (Coleoptera: Cocccinellidae) was studiedon exoticmealybug,Phenacoccus solenopsisTinsley (Hemiptera: Pseudococcidae) in controlled laboratory conditions (28±2 0 C, 65±5 RH% and L: D, 8: 16 h) at IPM laboratory,Tandojam.In laboratorypremating,pre-ovipositionand ovipositionofC.montrouzieriwas 5.6±0.08,9.9±0.19and 76.4±1.30days, respectively. The fecunditywas 486.9±1.417per female.The incubation period was 5.3±0.07 days. The oval, cylindrical, pale yellowish eggs were laid by females singly or in groups in ovisacs of the mealybug. After hatching from the eggs the larvae develope d through four instars. Mean developmental period for the first instar was 5.9±0.15 days, and the larvae were smooth, pale grey, and gradually increased in size. Mean developmental periods for nd , 3 rd and 4 th instars were 5.0±0.16, 7 .0±0.18 and 8.3±0.13 d ays, respectively, with a totallarval development26.2±0.61 days. The mean pre -pupal and pupal periods were 2.9±0.07 and 8.5±0.2 days, respectively. Total development period from egg to adult was 42.9±0.95 days. Mean longevities for male and female adultswere 80.9±0.89 and 84.4±0.9 days, respectively. The copulation period for C.montrouzieri rangedfrom5to48 minutes. The male mounted and dismounted over the female body and mated repeatedly throughout their life. The predator C. montrouzieri adult ssurvivalon different cotton mealybug densities in semi field conditions showed thatRead More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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Cited By Count: 15
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