Alternating temperatures affect the performance of Trichogramma species.
Bottom Line: Fecundity and longevity of parasitoids were significantly reduced under high temperature shocks to egg-laying females.However, the effect was more severe in eggs.Overall, daily short-term temperature shocks to different developmental stages of parasitoids showed radical effects on emergence, fecundity, longevity, and sex ratio of the progeny.
Affiliation: Division of Entomology, ICAR Research Complex for NEH Region, Umiam, Meghalaya-793103, India email@example.com.Show MeSH
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Mentions: Fecundity of parasitoids (G0 and F0). Fecundity of T. poliae (G0) and T. chilonis (G0) was significantly reduced (F = 2294, P < 0.01, df = 5 and F = 3176.98, P < 0.01, df = 5, respectively) as a result of high temperature shocks (Figure 3). The effect was more severe when the T. poliae (F = 618.49, P < 0.01, df = 2) and T. chilonis egg-stage (F = 996.61, P < 0.01, df = 2) was exposed than when the larval and pupal stages were exposed. A significant reduction in fecundity was also observed when egg-laying females (F0) of T. poliae (F = 675.98, P < 0.01, df = 5) and T. chilonis (F = 796.22, P < 0.01, df = 5) were exposed to various temperature shocks (Figure 4).
Affiliation: Division of Entomology, ICAR Research Complex for NEH Region, Umiam, Meghalaya-793103, India firstname.lastname@example.org.