Sublethal effects of Metarhizium anisopliae on Aphis gossypii at three constant temperatures

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ALIZADEH GELSEFIDI Z.; Sedaratian Jahromi A.; GHANE JAHROMI M.

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Journal: Applied Entomology and Phytopathology Year:2019 | Volume:87 | Issue:1 (108) Page(s): 117-128

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Title

Sublethal effects of Metarhizium anisopliae on Aphis gossypii at three constant temperatures

Author(s)

ALIZADEH GELSEFIDI Z. | Sedaratian Jahromi A. | GHANE JAHROMI M. | Issue Writer Certificate

Keywords

Biological controlQ1

entomopathogensQ2

integrated managementQ2

life tableQ2

population growth parametersQ1

Abstract

In the present study, sublethal effects of Metarhizium anisopliae (LC30) on Aphis gossypii were evaluated at three constant temperatures of 20, 25 and 30 º C, relative humidity of 65 ± 5% and a light period of 16h. Data analysis was performed using Age-stage two sex life table procedure. The lowest duration of immature stages for A. gossypii was estimated at 25 º C (4. 37 day). The highest recorded value for female longevity was also recorded at this temperature (16. 73 day). Different temperatures had significant effects on total fecundity of treated individuals with sublethal concentration of M. anisopliae and the lowest recorded value for this parameter was obtained at 30 º C (3. 60 nymph). Furthermore, sublethal effects of M. anisopliae on population growth parameters of offspring from treated individuals were also significantly different at temperatures tested. Since the recorded value of birth rate was dramatically lower than death ones at 30 º C, the estimated value for intrinsic rate of increase (r) showed a negative value (-0. 091 day-1) at this temperature. The estimated values of net reproductive rate (R0) at 20 and 30 º C (5. 46 and 0. 47 offspring/individual, respectively) were significantly lower than recorded value for this parameter at 25 º C (66. 29 offspring/individual). The results obtained revealed that temperatures of 20 and 30 º C significantly affect pathogenecity of M. anisopliae to A. gossypii. Our findings could increase the efficiency of M. anisopliae in management programs of different pests.

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APA: Copy

ALIZADEH GELSEFIDI, Z., Sedaratian Jahromi, A., & GHANE JAHROMI, M.. (2019). Sublethal effects of Metarhizium anisopliae on Aphis gossypii at three constant temperatures. APPLIED ENTOMOLOGY AND PHYTOPATHOLOGY, 87(1 (108) ), 117-128. SID. https://sid.ir/paper/381748/en

Vancouver: Copy

ALIZADEH GELSEFIDI Z., Sedaratian Jahromi A., GHANE JAHROMI M.. Sublethal effects of Metarhizium anisopliae on Aphis gossypii at three constant temperatures. APPLIED ENTOMOLOGY AND PHYTOPATHOLOGY[Internet]. 2019;87(1 (108) ):117-128. Available from: https://sid.ir/paper/381748/en

IEEE: Copy

Z. ALIZADEH GELSEFIDI, A. Sedaratian Jahromi, and M. GHANE JAHROMI, “Sublethal effects of Metarhizium anisopliae on Aphis gossypii at three constant temperatures,” APPLIED ENTOMOLOGY AND PHYTOPATHOLOGY, vol. 87, no. 1 (108) , pp. 117–128, 2019, [Online]. Available: https://sid.ir/paper/381748/en

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