Subscribe Now Subscribe Today
Science Alert
Curve Top
Pakistan Journal of Biological Sciences
  Year: 2000 | Volume: 3 | Issue: 10 | Page No.: 1668-1669
DOI: 10.3923/pjbs.2000.1668.1669
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Biology of Helicoverpa armigera (Hubner) Reared in Laboratory on Natural Diet

Abida Nasreen and Ghulam Mustafa

Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) completed its larval stage in 17.325±0.326 days passing through six instars under laboratory protocol, 26±1°C, 60-70% RH and 16 hours' daylight. The larvae moulted for 2nd instar, two days after hatching from eggs. Average stadiel periods for 2nd, 3rd, 4th, 5th and 6th instars were 2.07, 2.15, 2.48, 3.12, 3.55 and 3.95 days respectively. The last larval stage did not moult but was contracted and shortened into grub like pre-pupal stage. The average length measured for each instar (first to sixth) was 3.4, 4.6, 9.7, 17, 28.35, 36.85 mm respectively. The average pupal period was 13.2 days for female and 15.4 days for male. Fecundity of moths fed on sucrose solution was significantly higher than water fed females. The unfed females laid few eggs none was viable.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

Abida Nasreen and Ghulam Mustafa, 2000. Biology of Helicoverpa armigera (Hubner) Reared in Laboratory on Natural Diet. Pakistan Journal of Biological Sciences, 3: 1668-1669.

DOI: 10.3923/pjbs.2000.1668.1669






Curve Bottom