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Movement of Cicadulina storeyi (Homoptera: Cicadellidae) in maize fields and its behaviour in relation to maize growth stage

Published online by Cambridge University Press:  08 March 2017

C. M. Asanzi ,
N. A. Bosque-Perez  and
L. R. Nault
C. M. Asanzi
Affiliation:
International Institute of Tropical Agriculture, PMB 5320, Ibadan, Nigeria
N. A. Bosque-Perez*
Affiliation:
International Institute of Tropical Agriculture, PMB 5320, Ibadan, Nigeria
L. R. Nault
Affiliation:
Ohio Agricultural Research and Development Center, Ohio State University, Wooster, Ohio, USA 44691
*
N. A. Bosque-Pérez, IITA, L. W. Lambourn, Carolyn House, 26 Dingwall Road, Croydon CR9 3EE, England.
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Abstract

The movement of Cicadulina storeyi China (Homoptera: Cicadellidae), vector of maize streak geminivirus, within maize (Zea mays L.) fields was studied using mark, release and recapture experiments. Cicadulina storeyi, marked with fluorescent dye, were released at dusk and monitored for 14 days using yellow sticky traps placed at different distances (5–160 m) and directions from the release point. The suitability of maize growth stage for settling by C. storeyi was also investigated. Catches decreased steadily with distance from the release point and exponentially with time following the release. The mean leafhopper dispersal rate varied between 2.6 and 2.8 m/day for dry season and rainy season tests, respectively. The dispersal rate increased with distance from 1.4 m/day at 5 m to 13.6 m/day at 160 m. Wind was a major factor affecting direction of leafhopper movement with the largest proportion of C. storeyi collected downwind. Investigations on the suitability of maize growth stage for settling by C. storeyi revealed that the leafhopper preferred young plants (2–6 weeks after planting) to old ones.

Résumé

La dispersion dans les champs de maïs (Zea mays L.) de Cicadulina storeyi China (Homoptera: Cicadellidae), vecteur du géminivirus de la striure du maïs, a été étudiée en procédant à la méthode de marquage, lâcher et recapture des insectes. Le lâcher de C. storeyi, marquée à l'aide de teinture fluorescente, a eu lieu au crépuscule. Les déplacements des insectes ont été surveillés pendant 14 jours à l'aide de pièges jaunes collants, plaçés à des distances variables (5–160 m) et dans plusieurs directions par rapport au point de lâcher. Le nombre de C. storeyi capturées baissait régulièrement en fonction de la distance par rapport au point de lâcher et exponentiellement dans le temps. Le taux moyen de dispersion des cicadelles était de 2,6 m/jour à la saison sèche, et de 2,8 m/jour pendant la saison des pluies. Plus la distance augmentait, plus le taux de dispersion était élevé, passant de 1, 4 m/jour à 5 m, à 13, 6 m/jour à 160 m. La direction des déplacements des cicadelles était for tement influencée par le vent, le nombre le plus important de C. storeyi collectées se trouvant sous le vent. La période du cycle végétatif du maïs favorable à l'établissement de C. storeyi a été également étudiée. Cicadulina storeyi a montré une préférence pour les jeunes plants de maïs (2–6 semaines après plantation) plutôt que pour les vieux plants.

Keywords

Cicadulina leafhoppersdispersal behaviourmaizerelease/recapture experimentsmaize streak viruscicadellecomportement de dispersionmaïsexpérience de lâcher et recapturevirus de la striure du maïs
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 16 , Issue 1 , March 1995 , pp. 39 - 44
Copyright
Copyright © ICIPE 1995

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