Journal of Economic Entomology (2012) 105, 1439-1446

S.A. Hemati, B. Naseri, G. Nouri Ganbalani, H. Rafiee Dastjerdi and A. Golizadeh (2012)
Digestive proteolytic and amylolytic activities and feeding responses of Helicoverpa armigera (Lepidoptera: Noctuidae) on different host plants
Journal of Economic Entomology 105 (4), 1439-1446
Abstract: Digestive proteolytic and amylolytic activities and feeding responses of fifth instar larvae of Helicoverpa armigera (Hübner) on different host plants including chickpea (cultivars Arman, Hashem, Azad, and Binivich), common bean (cultivar Khomein), white kidney bean (cultivar Dehghan), red kidney bean (cultivar Goli), cowpea (cultivar Mashhad), tomato (cultivar Meshkin), and potato (cultivars Agria and Satina) were studied under laboratory conditions (25 ± 1°C, 65 ± 5% RH and a photoperiod of 16:8 [L:D] h). Our results showed that the highest protease activity in optimal pH was on cultivar Dehghan (8.717U/mg) and lowest one was on Meshkin (3.338 U/mg). In addition, the highest amylase activity in optimal pH was on cultivar Dehghan (0.340 mU/mg) and lowest was on Meshkin (0.088 mU/ mg). The larval weight of fifth instar H. armigera showed significant difference, being heaviest on Binivich (125.290 ± 5.050 mg) and lightest on Meshkin (22.773 ± 0.575 mg). Furthermore, the highest and lowest values of food consumed were on Goli (362.800 ± 27.500 mg) and Satina (51.280 ± 4.500 mg), respectively. In addition, the lowest values of prepupal and pupal weight were on Meshkin (32.413 ± 0.980 and 41.820 ± 1.270 mg, respectively). The results indicated that tomato (Meshkin) was unsuitable host for feeding fifth instar larvae of H. armigera.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Bahram Naseri, Ali Golizadeh

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa armigera	Potato (Solanum tuberosum)
	Helicoverpa armigera	Tomato (Solanum lycopersicum)
	Helicoverpa armigera	Beans (Phaseolus)
	Helicoverpa armigera	Cowpea and relatives (Vigna)
	Helicoverpa armigera	Chickpea (Cicer arietinum)