The silverleaf whitefly (Bemisia argentifolii, formerly referred to as sweetpotato whitefly-strain B Bemisia tabaci) is one of several whiteflies that are currently important agricultural pests. The silverleaf whitefly was first found in poinsettia crops in Florida in the mid-1980's. It was found to have moved on to tomatoes and other fruit and vegetable crops less than a year later. Within five years, the silverleaf whitefly had caused over $100 million in damage to the Texas and California agriculture industries.
Description[edit | edit source]
The adult silverleaf whitefly is about 1 millimeter in length and pale yellow in color.
Symptoms and Signs[edit | edit source]
In addition to inflicting typical whitefly-type damage on plants, this species can transmit plant viruses such as geminiviruses. The broad mite (Polyphagotarsonemus latus) also uses the whitefly as a dispersal mechanism by clinging to the legs of the fly and dropping off at another plant.
Ecology[edit | edit source]
Host plants[edit | edit source]
- Abelmoschus (Okra)
- Arachis (Peanut)
- Callistemon (Bottle Brush)
- Carica (Papaya)
- Centaurea (Bachelor’s Buttons)
- Coccinia (Scarlet Gourds)
- Colocasia (Taro)
- Glycine (Soybean)
- Lactuca (Lettuce)
- Lagerstroemia (Crepe Myrtle)
- Persea (Avocado)
- Physalis (Ground Cherry)
Control[edit | edit source]
This particular pest has been shown to be a good candidate for biological pest control, as it has several natural enemies, including parasitic wasps such as Encarsia and Eretmocerus.
References[edit | edit source]
- Fan, Yuqing; Petitt, Frederick L. (Jul 1998). "Dispersal of the broad mite, Polyphagotarsonemus latus (Acari: Tarsonemidae) on Bemisia argentifolii (Homoptera: Aleyrodidae)". Experimental & Applied Acarology 22 (7): 411–5. doi:10.1023/A:1006045911286. http://www.springerlink.com/content/p62501x2382ph231/. Retrieved 2007-02-21.