BIOLOGY, PREDATORY POTENTIAL OF Cryptolaemus montrouzieri Mulsant ON PAPAYA MEALYBUG AND SAFETY EVALUATION OF CERTAIN INSECTICIDES ON PREDATOR

Simple item page
dc.contributor.advisorKOTESWARA RAO, S.R.
dc.contributor.authorMANEESHA, A
dc.date.accessioned2018-08-13T08:03:37Z
dc.date.available2018-08-13T08:03:37Z
dc.date.issued2017
dc.descriptionD5510en_US
dc.description.abstractThe present studies on “Biology, Predatory potential of Cryptolaemus montrouzieri Mulsant on papaya mealybug and Safety evaluation of certain insecticides on predator’’ were carried out at Insectary, Department of Entomology, S.V. Agricultural College, Tirupati during 2016-17. Biology including morphometrics, predatory potential of C. montrouzieri on papaya mealybug, biology on different life stages of papaya mealybug and evaluation of toxicity of different insecticides on predator were studied. Studies on the biology of C. montrouzieri on Paracoccus marginatus revealed that the oviposition period, male longevity and female longevity was 43.60 ± 2.95, 70.70 ± 2.75 and 77.30 ± 5.03 days, respectively. The mean egg period, duration of I, II, III and IV instars, pre- pupa and pupa was 3.13 ± 1.12, 2.96 ± 0.65, 4.30 ± 0.57, 5.73 ± 0.75 and 6.40 ± 0.78, 2.30 ± 0.49 and 7.50 ± 0.96 days, respectively. The total grub period and developmental period i.e. from egg to adult was found to be 22.50 ± 1.33 and 32.30 ± 1.55 days, respectively. The mean fecundity of female was 272.60 and sex ratio was 1: 1. The morphometrics of the C. montrouzieri revealed that the average length and breadth of egg was 0.81 ± 0.05 mm and 0.41 ± 0.04 mm. Similarly, the average length and breadth of I, II, III and IV instar grubs was 1.26 ± 0.26 mm and 0.49 ± 0.05 mm; 4.60 ± 0.47 mm and 1.17 ± 0.08 mm; 6.06 ± 0.53 mm and 2.00 ± 0.30 mm; 8.44 ± 0.64 mm and 4.12 ± 0.15 mm, respectively. The xiv average length and breadth of pre- pupa and pupa was found to be 8.96 ± 0.36 mm and 4.30 ± 0.35 mm; 9.08 ± 0.46 and 4.32 ± 0.58 mm, respectively. The average length and breadth of adult male and adult female was 3.85 ± 0.24 mm and 2.89 ± 0.12 mm; 4.25 ± 0.28 mm and 3.20 ± 0.20 mm. The total developmental period of C. montrouzieri was significantly highest when reared on ovisacs of papaya mealybug, when compared to that of I, II and III instar nymphs of P. marginatus. Feeding potential of C. montrouzieri on different stages of papaya mealybug was studied. The mean predatory potential of I, II, III and IV instar grub on Ovisac, I, II and III instar nymphs of mealybug was 1.40 ± 0.12, 30.60 ± 0.51, 20.53 ± 0.98 and 13.46 ± 1.15; 1.68 ± 0.13, 43.52 ± 0.41, 30.40 ± 0.68 and 17.33 ± 0.88; 1.90 ± 0.14, 47.04 ± 0.84, 31.56 ± 0.51 and 20.45 ± 0.84 and 1.91 ± 0.15, 54.10 ± 0.45, 38.20 ± 0.58 and 26.32 ± 1.13. Average consumption capacity of male and female on ovisac, I, II and III instar nymphs was 2.98 ± 0.09, 57.81 ± 0.24, 41.39 ± 0.12 and 28.51 ± 0.02 and 3.05 ± 0.10, 58.19 ± 0.26, 43.00 ± 0.19 and 29.28 ± 0.08, respectively. Among safety evaluation of different insecticides on life stages of C. montrouzieri, dimethoate was found to be highly toxic whereas, flonicamid, buprofezin and neem oil were found to be non-toxic through food contamination method. In dry film method, acephate was highly toxic while, buprofezin and neem oil were least toxic to all the stages of the predatoren_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810064212
dc.keywordsCryptolaemus montrouzieri Mulsant, PAPAYA, MEALYBUG, PREDATORen_US
dc.language.isoen_USen_US
dc.pages136en_US
dc.publisherAcharya N.G. Ranga Agricultural Universityen_US
dc.research.problemBIOLOGY, PREDATORY POTENTIAL OF Cryptolaemus montrouzieri Mulsant ON PAPAYA MEALYBUG AND SAFETY EVALUATION OF CERTAIN INSECTICIDES ON PREDATORen_US
dc.subEntomologyen_US
dc.subjectnullen_US
dc.themeBIOLOGY, PREDATORY POTENTIAL OF Cryptolaemus montrouzieri Mulsant ON PAPAYA MEALYBUG AND SAFETY EVALUATION OF CERTAIN INSECTICIDES ON PREDATORen_US
dc.these.typeM.Scen_US
dc.titleBIOLOGY, PREDATORY POTENTIAL OF Cryptolaemus montrouzieri Mulsant ON PAPAYA MEALYBUG AND SAFETY EVALUATION OF CERTAIN INSECTICIDES ON PREDATORen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
01 Maneesha Final Thesis, 2017.pdf
Size:
25.93 MB
Format:
Adobe Portable Document Format
Description:
BIOLOGY, PREDATORY POTENTIAL OF Cryptolaemus montrouzieri Mulsant ON PAPAYA MEALYBUG AND SAFETY EVALUATION OF CERTAIN INSECTICIDES ON PREDATOR
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Theses