International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 3
First page : (690) Last page : (695)
Article doi: http://dx.doi.org/10.18782/2320-7051.2974
Predatory Potential of Ladybird Beetle, Cryptolaemus montrouzieri and Parasitisation Level of Encyrtid Parasitoid Acerophagus papayae On Papaya Mealybug
V. Abdul Rasheed1*, T. Murali Krishna1 and B. Bhaskar2
1Department of Entomology, S.V. Agricultural College, Institute of Frontier Technology,
Regional Agricultural Research Station, Tirupati, ANGRAU, 517502
2Department of Plant Pathology, S.V. Agricultural College, Tirupati, ANGRAU, 517502
*Corresponding Author E-mail: abdulrasheed906@gmail.com
Received: 12.05.2017 | Revised: 25.05.2017 | Accepted: 26.05.2017
ABSTRACT
The predatory potential of grubs on adult females of papaya mealybug, P. marginatus revealed that the mean number of adult females of P. marginatus consumed by first, second, third and fourth instar grubs were 3.40+0.49, 11.20+1.47, 22.40+1.36, and 31.60+1.50, respectively during total development period of individual instars. A total of 68.60+3.01 adult females of P. marginatus were consumed by the predator in the grub stage. The third and fourth instar grubs were voracious and consumed 22.40+1.36, 31.60+1.50 adult females of P. marginatus respectively. The consumption by first and second instars was 3.40+0.49, 11.20+1.47 of adult females. The predatory potential was increased gradually from first instar to fourth instar.The encyrtid parasitoid, Acerophagus papayae is a predominant exotic parasitoid on papaya mealybugs. The parasitisation rate of A. papayae on second instar nymphs of papaya mealybug, P. marginatus was 84.5+3.25 per cent.
Key words: Predatory potential, Paracoccus marginatus, Cryptolaemus montrouzieri, Acerophagus papayae
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Rasheed, V.A., Krishna, T.M. and Bhaskar, B., Predatory Potential of Ladybird Beetle, Cryptolaemus montrouzieri and Parasitisation Level of Encyrtid Parasitoid Acerophagus papayae On Papaya Mealybug, Int. J. Pure App. Biosci.5(3): 690-695 (2017). doi: http://dx.doi.org/10.18782/2320-7051.2974
