Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Pakistan Journal of Biological Sciences
Year: 2000  |  Volume: 3  |  Issue: 12  |  Page No.: 2106 - 2108

Life Table Studies of Trichogrammatoidea bactrae, Hymenoptera: Trichogrammatidae, an Effective Biological Agent of Pink Bollworm (Pectinophora Gossypiella Lepidoptera: Gelechidae) of Cotton (Gossypium spp.)

Muhammad Faheem Malik    

Abstract: Selected laboratory life table studies of Trichgrammatoidea bactrea were made at New Maxico State University USA. Life history studies were run at 13, 18, 23 and 28 °C at a constant 55% relative humidity (RH) and a 11/13 (light/dark) photoperiod. Speed of development from egg to adult stage ranged from 50.31 to 8.72 days at temperature from 13 to 28 °C respectively. Immature mortality was highest (32.01%) at 28 °C and lowest (16.79%) 18 °C. More female than males were found at all temperatures. Female fecundity related directly to temperatures. There were 24 eggs per female at 28 °C and 12 eggs per female at 13 °C. Females lived longer than males at all temperatures. Net productive rate was maximum at 23 °C (10.629) and minimum at 13 °C (4.751). In trinsic rate of increase and finite rate were maximum at 28 °C (0.231 and 1.261 respectively) and minimum at 13 °C (0.029 and 1.030 respectively).

Cited References   |    Fulltext    |   Related Articles   |   Back
 
 
   
 
 
 
  Related Articles

 
 
 
 
 
 
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility