Bemisia tabaci (Genn.) (Homoptera: Aleyrodidae) biotype B, also known as Bemisia argentifolii (Bellows et al., 1994), has been characterized as the main vector of begomoviruses, a virus genus that poses a major threat to the production of many vegetable crops worldwide (Polston & Anderson, 1997; Mansoor et al., 2003). Begomoviruses are transmitted by whiteflies in a persistent circulative manne...

The ability to generate physiologically synchronous groups of insects is vital to the performance of investigations designed to test insect responses to intrinsic and extrinsic stimuli. During a given instar, the silverleaf whitefly, Bemisia argentifolii, increase in depth but not in length or width. A staging system to identify physiologically synchronous 4th instar and pharate adult silverlea...

Whiteflies accumulate the polyhydric alcohol, sorbitol, when exposed to temperatures greater than about 30 degrees C. Feeding experiments using artificial diets containing labeled sucrose showed that more of the label was incorporated into whitefly bodies and less was excreted in the honeydew when feeding was conducted at 41 compared with 25 degrees C. Analysis of the components of the honeydew...

For the silverleaf whitefly, Bemisia argentifolii (Bellows and Perring) (Homoptera: Aleyrodidae), scanning and transmission electron microscopic techniques were used to observe the characteristics of egg oviposition into both plant cells/tissues and artificial membranes, and to document the morphology of mature egg pedicles removed from the ovaries of females. The exterior of the distal portion...

c s t u a 1 b d f a a i 1 b Collaborative research was conducted at the USDARS Subtropical Agricultural Research Center in southrn Texas to assess the microbial control potential of eauveria bassiana and Paecilomyces fumosoroseus gainst Bemisia whiteflies. Laboratory assays demontrated the capacity of both pathogens to infect Bemisia rgentifolii nymphs on excised hibiscus leaves incubated t rel...

The sweetpotato whitefly, Bemisia tabaci biotype B is extremely polyphagous with >600 species of host plants. We hypothesized that previous experience of the whitefly on a given host plant affects their host selection and performance on the plants without previous experience. We investigated the host selection for feeding and oviposition of adults and development and survival of immatures of th...