Effect of different bean cultivars on some ecophysiological aspects of Chrysodeixis chalcites (Esper) (Lepidoptera: Noctuidae)

Alami Taghidizaj, Solmaz and Naseri, Bahram and Golizadeh, Ali and Razmjou, Jabraeil (2014) Effect of different bean cultivars on some ecophysiological aspects of Chrysodeixis chalcites (Esper) (Lepidoptera: Noctuidae). Masters thesis, University of Mohaghegh Ardabili.

Text (تاثیر ارقام مختلف لوبیا روی برخی ویژگی¬های اکوفیزیولوژیکChrysodeixis chalcites (Esper) (Lepidoptera: Noctuidae)) Solmaz Alami Taghidizaj.pdf Download (1MB)

Abstract

The tomato looper, Chrysodeixis chalcites (Esper), is one of the important polyphagous pests in Iran and many countries of the world. The effect of different cultivars of bean including white kidney bean (cultivars Daneshkadeh and Dehghan), red kidney bean (cultivars Goli and, Naz), common bean (cultivars Khomein, Talash and Sadra) and cowpea (cultivar Mashhad) was studied on two-sex life table parameters, nutritional indices and activity of some digestive enzymes (protease and α-amylase) of C. chalcites under laboratory conditions (25±1°C, 65±5% RH, and photoperiod of 16: 8 (L: D) h.). According to the results, the longest development time of C. chalcites was on Daneshkadeh (25.77 ± 0.17 days) and shortest one was on Sadra (23.42 ± 0.20 days).The highest total fecundity was on Sadra (674.82 ± 46.1 eggs) and the lowest was on Daneshkadeh (136.7 ± 26.7 eggs).The lowest and highest values of the net reproductive rate (R0) of C. chalcites were observed on Daneshkadeh (46.88 ± 2.05 female/female/generation) and Sadra (265.82 ± 4.51 female/female/generation), respectively.The intrinsic rate of increase (rm) was the lowest on Daneshkadeh (0.0976 ± 0.0012 day-1) and the highest on Sadra (0.1599 ± 0.007 day-1). The results of nutritional indices of whole larval instars (fourth and fifth instars) showed that the highest ECI and ECD were on cultivar Sadra (26.015 ± 0.641 and 33.219 ± 0.878٪, respectively). Also lowest value of ECI was on cultivars Daneshkadeh (11.604 ± 0.203٪) and Naz (12.466 ± 0.325٪) and lowest value of ECD was on cultivar Daneshkadeh (15.818 ± 0.332٪). The highest general proteolytic activity of fourth instar in optimal pH was in the larvae fed on cultivars Mashhad (4.603 ± 0.476 U/mg) and Daneshkadeh (4.505 ± 0.166 U/mg). Among bean cultivars, the highest amylolytic activity of fifth instar in optimal pH was on cultivar Daneshkadeh (0.046 ± 0.003 mU/mg). The findings revealed that among bean cultivars tested, Daneshkadeh was unsuitable host for feeding of C.chalcites. Keywords: Chrysodeixis chalcites, biological parameters, nutritional indices, digestive enzymes, bean cultivars

Actions (login required)

View Item