First record of the Q biotype of the sweetpotato whitefly, Bemisia tabaci, in Guatemala

Abstract

Bemisia tabaci (Gennadius) adults and immatures were collected from poinsettia plants at two commercial production greenhouses in Guatemala during an invited tour to observe IPM practices within the facilities. Despite extensive scouting, only low numbers of insects were collected from vegetable, weed and wild ornamentals species located close to these facilities. Prior to molecular and biochemical analyses, whitefly immatures were initially identified as B. tabaci using morphological characters of the pupae to distinguish them from the greenhouse whitefly. The biotype status of adults and immatures was then established using esterase isozyme patterns and MTCO1 sequencing. The Q biotype was the only biotype found on commercially grown poinsettia plants. The previously recorded B biotype was observed outside the greenhouse facilities on Lactuca spp., Hibiscus spp. and Euphorbia spp. (wild poinsettia). The New World biotype was observed on wild poinsettia and field-grown beans (Phaseolus spp.). This is the first report of the Q biotype in Guatemala, and serves notice of the need for greater vigilance in the management of whiteflies on poinsettia mother stock used as a source of cuttings for export to the USA.

Use of Mitochondrial Cytochrome Oxidase I Polymerase Chain Reaction-Restriction Fragment Length Polymorphism for Identifying Subclades of Bemisia tabaci Mediterranean Group

“…At present, MED has spread to at least 10 countries outside the Mediterranean region, including Canada, Guatemala, Japan, Mexico, The Netherlands, New Zealand, China, South Korea, Uruguay, and the United States (Dennehy et al 2005(Dennehy et al , 2010Chu et al 2006;Ueda and Brown 2006;Brown 2007;Martinez-Carillo and Brown 2007;Bethke et al 2009;De Barro et al 2011). In some of these countries, MED has spread to Þeld crops and even dominated the invasive Middle EastAsia Minor 1 group (commonly known as B biotype; hereafter MEAM1) (Chu et al 2010a, b;Teng et al 2010), the globally dominant group for approximately two decades.…”

First report of the Q biotype of Bemisia tabaci in Argentina and Uruguay

“…This is the first identification of Q biotype in the Rio de la Plata region of Uruguay and in Argentina, because a previous study conducted in six regions of Argentina did not mention the presence of Q biotype (Viscarret et al 2003). Since its first record in 2004 in Arizona (Brown et al 2005), the Q biotype was reported in Mexico in 2007 (Martinez-Carrillo andBrown 2007) and in Guatemala in 2009(Bethke et al 2009). In contrast to our study, Q biotype in Arizona, Mexico and Guatemala was always first reported from poinsettia (Euphorbia pulcherrima) grown in greenhouses.…”

Rapid Spread of a Recently Introduced Virus (Tomato Yellow Leaf Curl Virus) and Its Vector <I>Bemisia tabaci</I> (Hemiptera: Aleyrodidae) in Liaoning Province, China

“…Recent studies suggest that B. tabaci is a complex that includes many cryptic species (Dinsdale et al 2010, De Barro et al 2011). Among them, B. tabaci B and Q (commonly known as biotype B and Q) are the most invasive and have been introduced into many countries including China (Dennehy et al 2005(Dennehy et al , 2010Chu et al 2006;Ueda and Brown 2006;Martinez-Carillo and Brown 2007;Bethke et al 2009;McKenzie et al 2009). B. tabaci Q was introduced into China in Ϸ2003, Ϸ10 yr later after the introduction of B. tabaci B (Chu et al 2006).…”