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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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Related in: MedlinePlus

Mean (±SEM) longevity (days) of Trichogramma poliae (a) and T. chilonis (b) under the influence of various temperature shocks during immature stages. 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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f05_01: Mean (±SEM) longevity (days) of Trichogramma poliae (a) and T. chilonis (b) under the influence of various temperature shocks during immature stages. 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: Female longevity of parasitoids (G0 and F0). The life spans of female T. poliae (G0) and T. chilonis (G0) were considerably reduced (F = 53.73, P < 0.01, df = 5. and F = 49.97, P < 0.01, df = 5, respectively) from short-term exposure to 40° C temperature shocks (Figure 5). Longevity of female T. poliae (G0) and T. chilonis (G0) was higher when exposed to higher temperatures at the pupal stage (F = 11.40, P < 0.01, df = 2, and F = 7.54, P < 0.01, df = 2, respectively) than the larval and egg stage. Increased intensity and frequency of thermal shocks caused significant effects on longevity of T. poliae (F0) (F = 16.89, P < 0.01, df = 5) and T. chilonis (F0) (F = 53.40, P < 0.01, df = 5) (Figure 6).


Alternating temperatures affect the performance of Trichogramma species.

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

Mean (±SEM) longevity (days) of Trichogramma poliae (a) and T. chilonis (b) under the influence of various temperature shocks during immature stages. 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

f05_01: Mean (±SEM) longevity (days) of Trichogramma poliae (a) and T. chilonis (b) under the influence of various temperature shocks during immature stages. 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: Female longevity of parasitoids (G0 and F0). The life spans of female T. poliae (G0) and T. chilonis (G0) were considerably reduced (F = 53.73, P < 0.01, df = 5. and F = 49.97, P < 0.01, df = 5, respectively) from short-term exposure to 40° C temperature shocks (Figure 5). Longevity of female T. poliae (G0) and T. chilonis (G0) was higher when exposed to higher temperatures at the pupal stage (F = 11.40, P < 0.01, df = 2, and F = 7.54, P < 0.01, df = 2, respectively) than the larval and egg stage. Increased intensity and frequency of thermal shocks caused significant effects on longevity of T. poliae (F0) (F = 16.89, P < 0.01, df = 5) and T. chilonis (F0) (F = 53.40, P < 0.01, df = 5) (Figure 6).

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