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

Abstract

Esterase profiles were examined for over 40 populations of the whitefly, Bemisia tabaci, obtained from native and cultivated plant hosts worldwide. Twelve unique electromorphs were identified from distinct populations concentrated largely in Central America, Africa, and India. One electromorph, type B, has recently been proposed as a separated species, Bemisia argentifolii, and has recently spread throughout much of the world. When considered with evidence from mating studies and the ability to induce phytotoxic disorders (squash silverleaf disorder), our data suggest that the single taxon Bemisia tabaci may actually represent a species complex.

Genetic structure of the invasive pest Bemisia tabaci: evidence of limited but persistent genetic differentiation in glasshouse populations

“…Increases in plant damage were linked to a change in agricultural practices, namely the intensification of crop regimes, including increased monoculture production. In spite of high insecticide use, these practices lead to the surge in whitefly populations (Brown et al, 1995a). In the United States, such surging populations were reported to be composed of invasive individuals (Costa and Brown, 1991), which were morphologically indistinguishable from the indigenous whiteflies.…”

Estrutura genética populacional de Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) utilizando marcadores microssatélites

“…Atualmente, já foram caracterizados mais de 20 biótipos distintos, denominados em série de letras A a T (Bedford et al 1994, Brown et al 1995a, Banks et al 1999, Perring 2001.…”

New records of predation on eggs of Bemisia tabaci (Hemiptera: Aleyrodidae) by Chrysopodes (Chrysopodes) Lineafrons (Neuroptera: Chrysopidae) in northwestern Argentina

“…The whitefly Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) is a serious pest of several annual crops, ornamental, industrial, fruit and weeds worldwide (Byrne et al, 1990;Brown et al, 1995;Viscarret, 2000;López-Ávila, 2005). It causes direct damage through sucking sap and the excretion of sugary substances that produce the growth of sooty mold, which causes decrease of the photosynthetic capacity of plant; also causes indirect damage by transmitting viruses and bacterias (Berlinger, 1986;Viscarret, 2000).…”