Ultraviolet-Deficient Greenhouse Environment Affects Whitefly Attraction and Flight-Behavior
- 1 April 2001
- journal article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 30 (2), 394-399
- https://doi.org/10.1603/0046-225x-30.2.394
Abstract
The effect of a UV-deficient environment on the attraction and dispersal behavior of whiteflies, Bemisia argentifolii (Bellows & Perring), and on the transmission efficiency of the whitefly-borne tomato yellow leaf curl geminivirus, was tested under field conditions and through controlled experiments. We found that the rate of tomato yellow leaf curl virus-disease spread to tomato plants grown under walk-in tunnels covered with regular greenhouse plastic sheets increases sharply with time, whereas the virus infection-rate under UV-absorbing sheets proceeds at a very slow pace. Average number of whiteflies trapped under regular plastic sheet tunnels was significantly higher than numbers trapped in UV-absorbing plastic sheet tunnels. Similarly, the average number of whiteflies trapped on yellow-sticky traps placed on the outside walls of tunnels covered with regular plastic was higher than the number trapped on the outside walls of tunnels covered with UV-absorbing plastic sheets. No differences were found in the whitefly’s ability to transmit tomato yellow leaf curl virus under the two types of plastic covers. Whitefly dispersal pattern under the two types of plastic covers was examined using a release-recapture experiment. In each type of walk-in tunnel we established a grid of yellow-sticky traps forming two concentric circles: an inner and an external. Under UV-absorbing tunnels, significantly higher numbers of whiteflies were captured on the internal circle of traps than the external circle. The fraction of whiteflies that were captured on the external circle was much higher under regular covers, when compared with UV-absorbing covers, suggesting that filtration of UV light hindered the ability of whiteflies to disperse inside these plastic tunnels. Our results indicate that the mechanisms by which UV-deficiency protects covered crops from insect infestation and spread of viruses are that the lack of UV interferes with insect flight orientation; and that the lack of UV radiation alters the normal behavior of the invading insects, resulting in reduced dispersal activity.Keywords
This publication has 15 references indexed in Scilit:
- Interference with Ultraviolet Vision of Insects to Impede Insect Pests and Insect-Borne Plant VirusesPublished by Elsevier BV ,2001
- The Sweetpotato or Silverleaf Whiteflies: Biotypes of Bemisia tabaci or a Species Complex?Annual Review of Entomology, 1995
- The transmission of geminiviruses by Bemisia tabaciPesticide Science, 1994
- Ultraviolet receptors and color vision: Evolutionary implications and a dissonance of paradigmsVision Research, 1994
- Visual behaviour of the greenhouse whitefly, Trialeurodes vaporariorumPhysiological Entomology, 1982
- Wavelength specific behaviour of the whiteflyTrialewodes vaporariorum (Homoptera: Aleyrodidae)Journal of Comparative Physiology A, 1981
- Prevention by soil mulching of the spread of tomato yellow leaf curl virus transmitted by Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) in IsraelBulletin of Entomological Research, 1978
- VISUAL AND OLFACTORY RESPONSES IN ORIENTATION TO PLANTS BY THE GREENHOUSE WHITEFLY, TRIALEURODES VAPORARIORUM (HOMOPTERA: ALEYRODIDAE)Entomologia Experimentalis et Applicata, 1975
- SPECTRAL SPECIFIC RESPONSES IN THE VISUAL BEHAVIOR OF THE GREENHOUSE WHITEFLY, TRIALEURODES VAPORARIORUM (HOMOPTERA: ALEYRODIDAE)Entomologia Experimentalis et Applicata, 1975
- STUDIES ON THE OLFACTION AND COLOUR SENSITIVITY OF BEMISIA TABACI (GENN.) (HOMOPTERA, ALEYRODIDAE)Entomologia Experimentalis et Applicata, 1962