Journal of
Ecology and The Natural Environment

  • Abbreviation: J. Ecol. Nat. Environ.
  • Language: English
  • ISSN: 2006-9847
  • DOI: 10.5897/JENE
  • Start Year: 2009
  • Published Articles: 408

Full Length Research Paper

Biology of pod fly, Melanagromyza obtusa Malloch on Cajanus cajan (L.) Millsp. in Manipur, India

S. Subharani* and T. K. Singh
1Distributed Information Sub Centre (DISC), Institute of Bioresources and Sustainable Development’ Takyelpat, Imphal – 79500, India. 2Entomology Research Laboratory, Manipur University, Canchipur-795003, India.
Email: [email protected]

  •  Accepted: 11 November 2009
  •  Published: 31 December 2009

Abstract

The biology of Pod fly, Melanagromyza obtusa Malloch (Diptera: Agromyzidae) was studied during 2004 - 2005 in the laboratory of Department of Life Sciences, Manipur University, Imphal (Altitude: 790 msl and Latitude: 23.83oN - 25.68oN) at a temperature of 17.39 ± 0.23oC and 59.16 ± 0.39% relative humidity. The mean longevity of the adult pod fly was 6.59 ± 0.38 days. The incubation period varies from 2.5 to 3.5 days, the average being 2.99 ± 0.16 days. There were three larval instars which took 7.75 ± 0.53 days to enter into pupal stage. The pupal period lasted for about 9 to 13 days with an average of 11.38 ± 0.74 days. The life cycle of M. obtusa was completed in 41.74 ± 0.81 days.

 

Key words: Pigeon pea, pod borer, Manipur, metamorphosis, instar, life cycle.