A NewBemisia tabaciBiotype in the Southwestern United States and its Role in Silverleaf of Squash and Transmission of Lettuce Infectious Yellows Virus

Phylogenetic Relationships of World Populations of Bemisia tabaci (Gennadius) Using Ribosomal ITS1

“…It is composed of numerous populations that, while morphologically indistinguishable (Rosell et al, 1997), vary considerably in their relative ability to transmit geminiviruses Markham et al, 1994;Brown and Bird, 1995), rate of development (Wang and Tsai, 1996), ability to utilize different hosts (Burban et al, 1992;Brown and Bird, 1995;Bedford et al, 1994), and ability to induce physiological changes in some hosts (Costa and Brown, 1991;Cohen et al, 1992;Bedford et al, 1994). They also vary considerably with respect to esterase Wool et al, 1993Wool et al, , 1994Coats et al, 1994;Legg et al, 1994;Brown et al, 1995a,b;Gunning et al, 1997) and RAPD-PCR profiles (Gawel and Bartlett, 1993;De Barro and Driver, 1997;Guirao et al, 1997), and there is considerable morphological variation among their endosymbionts (Costa et al, 1995).…”

Characterization and distribution of esterase electromorphs in the whitefly,Bemisia tabaci (Genn.) (Homoptera: Aleyrodidae)

“…The other was termed the B biotype, or the poinsettia strain. The B biotype is more fecund than the A, produces greater amounts of honeydew, has a broader host plant range, exhibits significantly higher levels of insecticide resistance, induces several different phytotoxic disorders in certain plant hosts (Anthony et al, 1995;Bethke et al, 1991;Bharathan et al, 1990;Byrne and Miller, 1990;Cohen et aL, 1992;Brown, 1991, 1993;Liu et aL, 1992), and has recently been proposed as a new species, Bemisia argentifolii (Bellows et aL, 1994;Perring et al, 1992).…”

Silicon and acibenzolar-S-methyl as resistance inducers in cucumber, against the whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) biotype B

“…Infestation by this aleyrodid can significantly inhibit plant development, especially because the toxins resulting from feeding of nymphs may cause plant death (Cohen et al 1992, Lourenção & Nagai 1994. The limitations and high cost of chemical control, in addition to toxicological problems such as insecticide persistence and resistance, justify the adoption of alternative management methods, including plant resistance against the whitefly.…”