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Alternating temperatures affect the performance of Trichogramma species.

Firake DM, Khan MA - J. Insect Sci. (2014)

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.

View Article: PubMed Central - PubMed

Affiliation: Division of Entomology, ICAR Research Complex for NEH Region, Umiam, Meghalaya-793103, India dfirake@gmail.com.

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Mean (±SEM) lifetime fecundity (no. of host parasitized per female) of two Trichogramma species at various temperature shocks to the egg-laying females. Bars having same arena with different letters indicate statistically significant differences (P ≤ 0.05, Tukey's HSD test). High quality figures are available online.
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f04_01: Mean (±SEM) lifetime fecundity (no. of host parasitized per female) of two Trichogramma species at various temperature shocks to the egg-laying females. Bars having same arena with different letters indicate statistically significant differences (P ≤ 0.05, Tukey's HSD test). High quality figures are available online.

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).


Alternating temperatures affect the performance of Trichogramma species.

Firake DM, Khan MA - J. Insect Sci. (2014)

Mean (±SEM) lifetime fecundity (no. of host parasitized per female) of two Trichogramma species at various temperature shocks to the egg-laying females. Bars having same arena with different letters indicate statistically significant differences (P ≤ 0.05, Tukey's HSD test). High quality figures are available online.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4206293&req=5

f04_01: Mean (±SEM) lifetime fecundity (no. of host parasitized per female) of two Trichogramma species at various temperature shocks to the egg-laying females. Bars having same arena with different letters indicate statistically significant differences (P ≤ 0.05, Tukey's HSD test). High quality figures are available online.
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).

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.

View Article: PubMed Central - PubMed

Affiliation: Division of Entomology, ICAR Research Complex for NEH Region, Umiam, Meghalaya-793103, India dfirake@gmail.com.

Show MeSH
Related in: MedlinePlus