Submit or Track your Manuscript LOG-IN

Biology and Feeding Efficiency of Zigzag Beetle, Menochilus sexmaculatus (Fab.) (Coleoptera: Coccinellidae) Fed on Mustard Aphid, Lipaphis erysimi (kalt.) (Hemiptera: Aphididae) Under Controlled Conditions

Biology and Feeding Efficiency of Zigzag Beetle, Menochilus sexmaculatus (Fab.) (Coleoptera: Coccinellidae) Fed on Mustard Aphid, Lipaphis erysimi (kalt.) (Hemiptera: Aphididae) Under Controlled Conditions

Ashfaq Hussain1, Javed Khan2, Ammara Blouch3, Ahmad-Ur-Rahman Saljoqi1, Ashraf Khan4,5* and Zaheer Sikandar6

1Department of Plant Protection, University of Agriculture, Peshawar, Khyber Pakhtunkhwa, Pakistan; 2Insect Pest Management Program, Institute of Plant and Environmental Protection, National Agricultural Research Centre, Islamabad, Pakistan; 3Food Science Research Institute, National Agricultural Research Centre, Pakistan; 4Institute of Plant and Environmental Protection, National Agricultural Research Centre, Islamabad, Pakistan; 5Provincial Key Laboratory for Agricultural Pest  Management of Mountainous Regions, Institute of Entomology, Guizhou University, Guiyang 550025, P.R. China;  6Sugarcane Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan.

 
*Correspondence | Ashraf Khan, Institute of Plant and Environmental Protection, National Agricultural Research Centre, Islamabad, Pakistan; Email: ashrafkhan@parc.gov.pk

ABSTRACT

Research was conducted to evaluate the biological attributes and feeding efficiency of Menochilus sexmaculata fed on Lipaphis erysimi under laboratory conditions. The mean developmental time from egg till adult emergence was 41.60±0.70 days under laboratory conditions of 24±1c° with 55±5 percent relative humidity (R.H.). The incubation period was 4.00±0.25 days. The pre-oviposition, oviposition, and post-oviposition periods were observed at 8.6, 24.1 and 6.0 days, respectively. The total laid eggs/female were 288.4 eggs. The pre-pupae and pupae developmental time was 1.00±0.00 and 6.00±0.08 days, respectively. The overall mean male longevity was 33.40 days, while the mean female longevity was 38.70 days. In larval feeding efficiency, the maximum mean number of aphids (479.6) were consumed by larvae while the minimum mean number of aphids (36.8) were consumed by 1st larva instar. Female beetle was recorded with a maximum mean number of aphids (2561) consumption as compared to male beetles (1921). Furthermore, the apparent mortality was highest at egg stage, making it the most vulnerable stage in the beetle’s life cycle, followed by 1st instar larval stage, which also showed higher mortality. The maximum survival fraction was observed for pre-pual and fourth instar larvae, while the minimum was found for the egg stage. Mortality survival ratio (MSR) was found to be maximum at the egg stage and minimum at the 4th instar and pre-pupal stages, while the Indispensable mortality (I.M.) was found to be maximum at the egg stage and minimum at 4th instar and pre-pupal stages. Life expectancy (ex) was found to be maximum in the egg phase (4.67) and minimum in the pupal phase (1.5). The total K value for the whole generation was 0.33.

To share on other social networks, click on any share button. What are these?

Pakistan Journal of Agricultural Research

March

Vol.37, Iss. 1, Pages 1-87

Featuring

Click here for more

Subscribe Today

Receive free updates on new articles, opportunities and benefits


Subscribe Unsubscribe