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Functional response of Geocoris ochropterus Fieber (Hemiptera: Geocoridae) to different egg densities of Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae)

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Title Functional response of Geocoris ochropterus Fieber (Hemiptera: Geocoridae) to different egg densities of Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae)
Not Available
 
Creator Richa Varshney
Neeraj Budhlakoti
Chandish R. Ballal
 
Subject Attack rate, Functional response, Geocoris ochropterus, Handling time, Helicoverpa armigera
 
Description Not Available
The biology and predatory efficiency of Geocoris ochropterus Fieber (Hemiptera: Geocoridae) has been studied extensively against many insect pests, but information on functional response of different stages of G. ochropterus to Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) is lacking so far. The functional response of different stages of G. ochropterus to varying densities of eggs of H. armigera was investigated in the laboratory at 26 ± 2°C, 65 ± 2% RH and 12 L: 12D. Immature stages i.e. 3rd, 4th, 5th instar and adult predator exhibited type II functional response. Handling time decreased with increasing predator’s developmental stage. Adult G. ochropterus followed by fifth instar exhibited highest egg consumption and attack rate compared to other stages. Functional response parameters indicate that the adult and fifth instar of G. ochropterus were more voracious and efficient than other juveniles and might be useful as promising biocontrol agent against H. armigera.
Not Available
 
Date 2023-01-23T06:24:58Z
2023-01-23T06:24:58Z
2018-09-18
 
Type Journal
 
Identifier Varshney, R., Budhlakoti, N. & Ballal, C.R. Phytoparasitica (2018) 46: 451. https://doi.org/10.1007/s12600-018-0687-1
1876-7184
http://krishi.icar.gov.in/jspui/handle/123456789/75600
 
Language English
 
Relation Not Available;
 
Publisher Springer Nature.