تأثیر رژیم غذایی‌ مصنوعی بر پایه ارقام مختلف بقولات روی فراسنجه‌های زیستی و رشد جمعیت کرم غوزه پنبه، Helicoverpa armigera

The cotton bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), is the key pest, polyphagous and with global spread that causes considerable damage to various crops. In this study, the effects of various legume seeds, including broad bean cultivars (Barekat, Mahta, Saraziri, Feyz and Shadan), white kidney bean (Dehghan cultivar), common bean (Khomein cultivar), red kidney bean (Goli cultivar), cowpea (Arabi and Mashhad cultivars) based on an artificial diet were assessed on life table parameters of H. armigera in a growth chamber at 25 ± 1°C, 60 ± 5% RH, and a photoperiod of 16:8 (L:D) hours. The first and second instar larvae of H. armigera were reared together in plastic dishes until the emergence of third instar larvae, afterwards which they were separately reared in Petri dishes to prevent any cannibalistic behavior. The adults of cotton bollworm were fed a honey solution (10 %). Life table parameters were calculated using Carry’s single sex life table method. Data was analyzed by one-way analysis of variance (ANOVA). The results showed that significant differences were observed in the duration of egg, larval, pupal, pre-pupal, immature development time, fecundity and male and female adult longevity of H. armigera between the tested various legumes. Regarding the results, H. armigera showed the shortest pupal incubation period and development time on white kidney bean (14.31 and 35.76 day, respectively), while the longest period was on broad bean Mahta (16.41 and 44.82 day, respectively). The intrinsic rate of increase (r) was highest when H. armigera was reared on white kidney bean and cowpea Arabi cultivar (0.1241 and 0.1225 per day, respectively), and the lowest r value resulted from rearing the H. armigera on broad bean Mahta and common bean (0.0662 and 0.0686 per day, respectively). The highest net reproductive rate value (R0) was observed on white kidney bean (310.33 female/female/generation) and the lowest was on common bean host (26.16 female/female/generation). Furthermore, the longest mean generation time (T) and doubling time (DT) of H. armigera was detected on the broad bean Mahta host (56.42 and 10.47 day). The cluster results indicated that white kidney bean and red kidney bean hosts were relatively susceptible hosts, in contrast common bean Khomein and broad bean Mahta were the relatively resistant (least appropriate) hosts for population growth of H. armigera. In addition, Dehghan and Goli cultivars were found to be the most suitable cultivar in comparison with other legumes in the plant-herbivore interactions and mass rearing of H. armigera to carry out biological control projects of insects efficiently.