Limits...
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.

Show MeSH

Related in: MedlinePlus

Mean (±SEM) lifetime fecundity (no. of host parasitized per female) 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
getmorefigures.php?uid=PMC4206293&req=5

f03_01: Mean (±SEM) lifetime fecundity (no. of host parasitized per female) 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: 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 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

f03_01: Mean (±SEM) lifetime fecundity (no. of host parasitized per female) 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: 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