مطالعه فراسنجه‌های جدول زندگی سوسک چهارنقطه‌ای حبوبات، Callosobruchus maculatus (F.) (Col.: Chrysomelidae)، روی ارقام رایج نخود

The Cowpea Weevil, Calosobruchus maculatus (F), is one of important storage pest in tropical and subtropical regions that causes significant damage to chickpea grains. Life table parameters of C. maculatus carried out on different chickpea cultivars including Azad, Azkan, Adel, Hashem, Mansour, and Goksu. Obtained data were calculated based on the age-stage, two-sex life table. The results showed that the highest age-specific survival rate (Sxj) of pupae was recorded on Adel, Mansour and Goksu cultivars (0.80, 0.80 and 0.80) and the lowest one in Hashem cultivar (0.52). The highest Sxj of male and female adult in Adel (0.42), Mansour (0.42) and Goksu (0.42) cultivars, and the lowest one in Azad cultivars (0.35) and Hashem (0.35), respectively was observed. The female age-stage specific fecundity (fxj) of the Cowpea Weevil in Adel, Azkan, Hashem, Azad, Goksu, and Mansour chickpea cultivars was 31.33, 30.60, 28.50, 26.83, 26.72 and 24.45 eggs, respectively that were recorded at 22nd, 27nd, 24nd, 25nd, 25nd and 25nd day, respectively. The highest and lowest fx were observed on Adel and Goksu cultivars, respectively. The highest age-specific fecundity (mx) of this pest in Azkan, Adel, Azad, Mansour, Hashem, and Goksu were recorded 14.34, 11.38, 9.66, 8.94, 8.14, and 7.94 eggs/female/days on days 28, 25, 28, 26, 24 and 25, respectively. So, the highest and lowest mx were observed on Azkan and Goksu cultivars, respectively. The highest age-specific fertility (lxmx) values of pest were 11.47, 11.10, 8.35, 7.82, 7.25, and 7.12 eggs at day 27, 25, 25, 26, 28, and 25 in chickpea cultivars Azkan, Adel, Goksu, Mansour, Azad and Hashem, respectively. The highest and lowest fertility was recorded on Azkan and Hashem, respectively. The highest and lowest age-stage life expectancies (exj) at the first day was obtained on Goksu, and Hashem cultivars 32.20 and 28.00 days, respectively. The highest and lowest exj amount of the pupal stage at the first day was observed on cultivars Azkan (17.14 days) and Hashem (12.91 days), respectively. The highest and lowest exj amount of the female stage at the first day was also observed on Azkan and Hashem 11.01 and 8.65 days, respectively. The results showed that Hashem cultivar is relatively resistant compared to other chickpea cultivars.