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Biology, natural enemies and damage of the sugarcane whitefly (Neomaskellia andropogonis) (Homoptera: Aleyrodidae) in Iran

Published online by Cambridge University Press:  24 September 2018

Alireza Askarianzadeh  and
Mehrnoosh Minaeimoghadam
Alireza Askarianzadeh*
Affiliation:
Department of Plant Protection, College of Agricultural Sciences, Shahed University, PO Box 18151/159, Tehran, Iran
Mehrnoosh Minaeimoghadam
Affiliation:
Department of Plant Protection, College of Agricultural Sciences, Shahid Chamran University, Ahwaz, Iran
*
*E-mail: askarianzadeh@shahed.ac.ir
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Abstract

An outbreak of the sugarcane whitefly (Neomaskellia andropogonis Corbett) recently occurred in sugarcane fields in Khuzestan Province of Iran. This pest sucks plant sap producing large amounts of honeydew. In Khuzestan Province, populations of all developmental stages increase from early August until late November. At this time, when sugarcane is at the ripening stage, nymphs suck the sap, and in cases of severe infestation, retard the growth of sugarcane plants. In this study, we investigated the biology of the pest on different cultivars of sugarcane and under different temperatures. Also, we conducted experiments to determine the damage caused by the pest in the field. Mean pre-adult developmental times were 24.09, 28.06, 27.27 and 26.64 days on CP69-1062, CP57-1062, CP48-103 and NCO-310 cultivars, respectively, and only female progeny were produced. Mean longevity of females on the four cultivars was 6, 8.49, 4.15 and 4.60 days, respectively. Adult females laid an average of 61.80, 58.80, 41.10 and 39.38 eggs on the four cultivars, respectively. Results show that the optimum temperature for development of different stages of N. andropogonis is 30±1°C during the day and 25±1°C at night, and at this temperature, egg and nymphal duration (including first, second, third instars and pupae) and adult longevity were 6.2, 17.0 and 7.6 days, respectively. Females of cultivar CP69-1062 laid an average of 50.09 eggs. Analysis of data on the quality of damage (including Brix, pol and refined sugar factors) shows that damage was inversely and significantly correlated with the number of infested leaves. Whitefly damage differed among cultivars; and, based on the quality of damage, early maturing cultivars were more susceptible to whitefly damage. We collected two parasitoid wasps from nymphs—Encarsia inaron (Walker) (Hym.: Aphelinidae) and Eretmocerus delhiensis Mani (Hym.: Aphelinidae). To the best of our knowledge, this is the first study to assess the biology, damage and natural enemies of N. andropogonis on sugarcane in Iran.

Keywords

SugarcaneNeomaskellia andropogonisbiologydamagenatural enemy
Type
Research Paper
Information
International Journal of Tropical Insect Science , Volume 38 , Issue 4 , December 2018 , pp. 381 - 386
Copyright
Copyright © icipe 2018 

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References

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