The second generation of Anisopteromalus calandrae (Howard) collected from commercial stored com in South Carolina was reared at constant temperatures of 20, 25,30, and 35°C at 63% RH and a 12: 12 (L:D) photoperiod. Hosts were medium to large larvae of Sitophilus zeamais Motschulsky reared on corn (21–23 d old at 25°C, 63% RH). Daily production of viable progeny, sex ratio, adult female survivorship, and development time were measured to calculate net reproductive rate (Ro), generation time (T), intrinsic rate of increase (Rm), and female adult life expectancy. Female longevity was greatest at 20°C (14.5 d median) and shortest at 30 and 35°C (6 d). Median female development time ranged from 44 d at 20°C to 10 d at 35°C. Mean number of progeny produced per female over her lifetime increased from 10.4 at 20°C to 42.6 at 35°C. Progeny sex ratio was much lower at 20°C (33% female) than at the other temperatures (63–71% female). Intrinsic rate of increase was lowest at 20°C (0.028 female per female per day) and greatest at 35°C (0.250), Ro increased from 4.5 female per female at 20°C to 27.7 at 35°C, and T decreased from 53.5 to 13.3 d.
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L. B. Smith (1992) studied this question.
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