The Sweetpotato or Silverleaf Whiteflies: Biotypes of Bemisia tabaci or a Species Complex?

Brown,; Fröhlich,; Rosell,

doi:10.1146/annurev.ento.40.1.511

Cited by 282 publications

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“…The cotton whitefly Bemisia tabaci (Gennadius), occurring worldwide in tropical and subtropical climates (Jiang et al, 1999;Hilje et al, 2001) as well as in protected agricultural systems in temperate regions (Brown et al, 1995), is a severe pest of numerous field and vegetable crops in many parts of the world (Gerling et al, 2001), attacking more than 600 plant species (Secker et al, 1998). The whitefly causes damage through feeding, honeydew production and resultant sooty mold, and disease transmission (Jones, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Many attempts have been made to control B. tabaci. Because of their high reproductive rate, multiple generations per year (Byrne & Bellows, 1991;Brown et al, 1995), and ability to rapidly develop resistance to insecticides (Palumbo et al, 2001), the whitefly is very difficult to control through conventional approaches. Thus, biological control becomes the primary method to suppress whitefly populations in agroecosystems.…”

Section: Introductionmentioning

confidence: 99%

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Suitability of various prey types for the development of Propylea japonica (Coleoptera: Coccinellidae)

Zhang¹,

Zhang²,

Hua³

2007

Eur. J. Entomol.

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Abstract. The relative suitability of three prey organisms, Bemisia tabaci (Gennadius) eggs, B. tabaci nymphs, and Myzus persicae (Sulzer), to the ladybird Propylea japonica (Thunberg) was evaluated under laboratory conditions. The larvae developed fastest when fed M. persicae, and slowest on B. tabaci eggs. When fed M. persicae, all larvae successfully developed into adult with a growth index (i.e., percent pupation/larval period in days) of 13.16 and development rate of 0.096. The longevity of starving adults was 4.7 ± 0.2 days. In contrast, when fed B. tabaci eggs, all larvae survived to the second instars, 56.7% of which survived to the third instars, 13.3% to the fourth instars; only 6.7% of larvae survived to the pupal stage and the pupae developed into abnormal adults that died shortly. When fed B. tabaci nymphs, all larvae survived and successfully developed into adults with a growth index of 10.71 and development rate of 0.083. The adult body mass was greater when larvae fed M. persicae, compared to adults eclosing from larvae fed B. tabaci nymphs. On the basis of these findings, the order of suitability of three prey organisms for P. japonica is M. persicae > B. tabaci nymph > B. tabaci egg. This is the first record that P. japonica can complete its development when feeding exclusively on whitefly nymphs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Suitability of various prey types for the development of Propylea japonica (Coleoptera: Coccinellidae)

Zhang¹,

Zhang²,

Hua³

2007

Eur. J. Entomol.

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“…Although monophagous and oligophagous populations of B. tabaci have been reported, e.g., Jatropha (Brown et al 1995) and the cassava biotype (Abdullahi et al 2003), respectively, the complex is formed mainly by polyphagous populations (Mound 1983). Among them, the biotype B appears to have the widest host range (Brown et al 1995). On this respect, it is suggested that there is a wide range of genetic differences among the B. tabaci populations that permit them to adapt to new hosts and climates in different geographic regions (Basu 1995).…”

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confidence: 99%

Biological parameters of Bemisia tabaci (Gennadius) biotype B (Hemiptera: Aleyrodidae) on Jatropha gossypiifolia, commercial (Manihot esculenta) and wild cassava (Manihot flabellifolia and M. carthaginensis) (Euphorbiaceae)

Carabalí¹,

Belloti²,

Montoya-Lerma³

2010

Neotrop. entomol.

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-Bemisia tabaci (Gennadius) is one of the most important pests of cassava in Africa and several countries of Asia due to the damage caused by direct feeding, the excretion of honeydew, and its capacity as a vector of cassava mosaic geminivirus. There is a general consensus that B. tabaci is a complex of morphologically indistinguishable populations with different biotypes. In the Americas, the polyphagous biotype B does not appear to feed on cassava. Recent studies indicate that it is possible, however, for biotype B to gradually adapt to cassava using phylogenetically related hosts. Therefore, the possibility that some wild species of cassava constitute intermediate hosts in the adaptation process may lead to the establishment of biotype B on commercial varieties of Manihot esculenta. In here, we evaluated Jatropha gossypiifolia, two wild species of cassava (Manihot fl abellifolia and M. carthaginensis) and a commercial cassava variety (MCol 2063) as hosts of biotype B. The highest oviposition rate (2.7 eggs /two days) occurred on M. esculenta, although the development time (44 d) was the longest when compared to M. carthaginensis and J. gossypiifolia. About 60% of the population could reproduce on the wild cassava species vs. 55% on J. gossypiifolia and 27.5% on the commercial variety. Our data suggest that J. gossypiifolia is a suitable host and the wild species M. carthaginensis can constitute a potential intermediate host in the adaptation of biotype B to commercial varieties of cassava.

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“…Atualmente, Bemisia tabaci (Gennadius) é um complexo com vários biótipos, e têm como hospedeiros diferentes espécies de plantas de importância econômica, plantas ornamentais e plantas daninhas (Brown et al 1995).…”

Section: Palavras-chave: Resistência Mosca-branca Gossypium Hirsutuunclassified

“…O biótipo B diferenciase do biótipo A por apresentar maior fecundidade, maior número de hospedeiros, resistência a vários inseticidas e capacidade de induzir anomalias fisiológicas às plantas, tais como o prateamento-das-folhas de cucurbitáceas e o amadurecimento irregular de frutos do tomateiro, que são anomalias não causadas por nenhum outro biótipo (Brown et al 1995).…”

Section: Palavras-chave: Resistência Mosca-branca Gossypium Hirsutuunclassified

Biologia e não-preferência para oviposição por Bemisia tabaci (Gennadius) biótipo B (Hemiptera: Aleyrodidae) em cultivares de algodoeiro

Torres¹,

Souza²,

Amaral³

et al. 2007

Neotrop. entomol.

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-The purposes of this work were to evaluate some biological aspects of Bemisia tabaci (Gennadius) biotype B at egg and nymphal stages and to evaluate the non-preference for oviposition and its correlation with the number and type of trichomes on the cotton cultivars BRS Ipê, BRS 186-Precoce 3, BRS Acala, BRS Verde, BRS-200 Marrom, BRS Cedro, BRS Ita 90-2 and BRS Aroeira. The experiments were conducted in climatic chambers at 28 ± 2°C, 70% RH and photophase of 14h, and in greenhouse. Egg fertility was not affected by the cotton cultivars but survival in egg-adult period was influenced by the host plant. There was no influence of cultivars neither on the duration of egg stage, nymphs at 2nd, 3rd and 4th instars nor on the duration from egg to adult, but nymphs reared on the cultivar BRS Ipê had their 1st instar extended. Low number of eggs was detected on the cultivars BRS Aroeira, BRS Verde and BRS Ita 90-2 in both experiments with and without oviposition choice, indicating a possible mechanism of resistance, but no correlation could be established between trichome densisty and oviposition non-preference.KEY WORDS: Resistance, whitefly, Gossypium hirsutum, trichome RESUMO -Os objetivos deste trabalho foram avaliar alguns aspectos biológicos das fases de ovo e de ninfa de Bemisia tabaci (Gennadius) biótipo B e avaliar a não-preferência para oviposição em testes com e sem chance de escolha e sua correlação com o número e tipo de tricomas nas cultivares de algodoeiro (BRS Ipê, BRS 186-Precoce 3, BRS Acala, BRS Verde, BRS 200-Marrom, BRS Cedro, BRS Ita 90-2 e BRS Aroeira). Os experimentos foram realizados em câmaras climatizadas (28 ± 2ºC, 70 ± 10% UR e fotofase de 14h), e em casa-de-vegetação. A viabilidade dos ovos não foi afetada pelas cultivares de algodoeiro, porém, a sobrevivência no período de ovo a adulto foi influenciada pelo hospedeiro. Não houve efeito das cultivares na duração da fase de ovo, do segundo, terceiro e quarto ínstares nem no período de ovo a adulto. As ninfas que se desenvolveram na cultivar BRS Ipê tiveram o primeiro ínstar alongado, diferentemente daquelas desenvolvidas nas demais cultivares. As cultivares BRS Aroeira, BRS Verde e BRS Ita 90-2 apresentaram baixo número de ovos nos testes com e sem chance de escolha, indicando um possível mecanismo de resistência, mas não foi possível estabelecer uma correlação entre a densidade de tricomas e a não-preferência para oviposição. PALAVRAS-CHAVE: Resistência, mosca-branca, Gossypium hirsutum, tricomaAtualmente, Bemisia tabaci (Gennadius) é um complexo com vários biótipos, e têm como hospedeiros diferentes espécies de plantas de importância econômica, plantas ornamentais e plantas daninhas (Brown et al. 1995).A importância de B. tabaci tem aumentado e isso tem sido associado à introdução e dispersão do biótipo B em vários países das Américas e da Europa. O biótipo B diferenciase do biótipo A por apresentar maior fecundidade, maior número de hospedeiros, resistência a vários inseticidas e capacidade de induzir anomalias fisiológicas às pl...

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The Sweetpotato or Silverleaf Whiteflies: Biotypes of Bemisia tabaci or a Species Complex?

Cited by 282 publications

References 0 publications

Suitability of various prey types for the development of Propylea japonica (Coleoptera: Coccinellidae)

Suitability of various prey types for the development of Propylea japonica (Coleoptera: Coccinellidae)

Biological parameters of Bemisia tabaci (Gennadius) biotype B (Hemiptera: Aleyrodidae) on Jatropha gossypiifolia, commercial (Manihot esculenta) and wild cassava (Manihot flabellifolia and M. carthaginensis) (Euphorbiaceae)

Biologia e não-preferência para oviposição por Bemisia tabaci (Gennadius) biótipo B (Hemiptera: Aleyrodidae) em cultivares de algodoeiro

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