First report of <i>Bemisia tabaci</i> Mediterranean (Q biotype) species in Brazil

Barbosa, Leonardo da Fonseca; Yuki, Valdir Atsushi; Marubayashi, Julio Massaharu; Marchi, Bruno Rossitto De; Perini, Fernando Luis; Pavan, Marcelo Agenor; Barros, Danielle Ribeiro de; Ghanim, Murad; Moriones, Enrique; Navas‐Castillo, Jesús; Krause‐Sakate, Renate

doi:10.1002/ps.3909

Cited by 59 publications

(22 citation statements)

References 25 publications

(41 reference statements)

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“…This approach may be relevant to other invasive organisms with high effective population sizes, such as the soybean stem fly (SSF) Melanagromyza sojae 53, the whitefly Bemisia tabaci cryptic species complex (e.g 5455, the European Grapevine moth Lobesia botrana 5657, and the Russian Wheat Aphid Diuraphis noxia and incorporating genetic signatures of endosymbiont bacteria (e.g 58…”

Section: Discussionmentioning

confidence: 99%

Mitochondrial DNA and trade data support multiple origins of Helicoverpa armigera (Lepidoptera, Noctuidae) in Brazil

Tay

Walsh

Downes

et al. 2017

Sci Rep

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The Old World bollworm Helicoverpa armigera is now established in Brazil but efforts to identify incursion origin(s) and pathway(s) have met with limited success due to the patchiness of available data. Using international agricultural/horticultural commodity trade data and mitochondrial DNA (mtDNA) cytochrome oxidase I (COI) and cytochrome b (Cyt b) gene markers, we inferred the origins and incursion pathways into Brazil. We detected 20 mtDNA haplotypes from six Brazilian states, eight of which were new to our 97 global COI-Cyt b haplotype database. Direct sequence matches indicated five Brazilian haplotypes had Asian, African, and European origins. We identified 45 parsimoniously informative sites and multiple substitutions per site within the concatenated (945 bp) nucleotide dataset, implying that probabilistic phylogenetic analysis methods are needed. High diversity and signatures of uniquely shared haplotypes with diverse localities combined with the trade data suggested multiple incursions and introduction origins in Brazil. Increasing agricultural/horticultural trade activities between the Old and New Worlds represents a significant biosecurity risk factor. Identifying pest origins will enable resistance profiling that reflects countries of origin to be included when developing a resistance management strategy, while identifying incursion pathways will improve biosecurity protocols and risk analysis at biosecurity hotspots including national ports.

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Section: Discussionmentioning

confidence: 99%

Mitochondrial DNA and trade data support multiple origins of Helicoverpa armigera (Lepidoptera, Noctuidae) in Brazil

Tay

Walsh

Downes

et al. 2017

Sci Rep

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“…Taken as a whole, these findings provided evidence to support multiple independent introductions of H. armigera into the South American continent over the effect of stochastic lineage sorting. Our finding is not without precedent, with the globally invasive hemipteran whitefly Bemisia tabaci MED species (i.e., the real B. tabaci [59]) also being shown to have been independently introduced into this southern region of South America [60,61] in addition to an earlier introduction elsewhere in Brazil [62].…”

Section: Discussionmentioning

confidence: 58%

Multiple incursion pathways forHelicoverpa armigerain Brazil show its genetic diversity spreading in a connected world

Arnemann

Roxburgh

Walsh

et al. 2019

Preprint

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The Old World cotton bollworm Helicoverpa armigera was first detected in Brazil with subsequent reports from Paraguay, Argentina, Bolivia, and Uruguay. This pattern suggests that the H. armigera spread across the South American continent following incursions into northern/central Brazil, however, this hypothesis has not been tested. Here we compare northern and central Brazilian H. armigera mtDNA COI haplotypes with those from southern Brazil, Uruguay, Argentina, and Paraguay. We infer spatial genetic and gene flow patterns of this dispersive pest in the agricultural landscape of South America. We show that the spatial distribution of H. armigera mtDNA haplotypes and its inferred gene flow patterns in the southwestern region of South America exhibited signatures inconsistent with a single incursion hypothesis. Simulations on spatial distribution patterns show that the detection of rare and/or the absence of dominant mtDNA haplotypes in southern H. armigera populations are inconsistent with genetic signatures observed in northern and central Brazil. Incursions of H.armigera into the New World are therefore likely to have involved independent events in northern/central Brazil, and southern Brazil/Uruguay-Argentina-Paraguay. This study demonstrates the significant biosecurity challenges facing the South American continent, and highlights alternate pathways for introductions of alien species into the New World.

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“…However, the identification of the species involved in these outbreaks based on genetic differences has only recently been attempted (see example from Kenya in Manani et al , 2017). Due to morphological similarities, B. tabaci was originally thought to be one species worldwide, but based on genetic differences (Colvin et al , 2004; Sseruwagi et al , 2005; Boykin et al , 2007; 2013; Wang et al , 2014); and mating incompatibility (Colvin et al , 2004; Xu et al , 2010; Liu et al , 2012), it is now recognized as a species complex with at least 34–36 species (Boykin et al , 2012; Barbosa et al , 2015). This discovery of further species diversity has led to many nomenclatural changes over the last 10 years causing confusion in the literature (Boykin & De Barro, 2014; Boykin et al, 2018).…”

Section: African B Tabaci Species Complex: Naming and Identificationmentioning

confidence: 99%

Cassava whitefly,Bemisia tabaci(Gennadius) (Hemiptera: Aleyrodidae) in East African farming landscapes: a review of the factors determining abundance

Macfadyen

Paull

Boykin

et al. 2018

Bull. Entomol. Res.

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Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) is a pest species complex that causes widespread damage to cassava, a staple food crop for millions of households in East Africa. Species in the complex cause direct feeding damage to cassava and are the vectors of multiple plant viruses. Whilst significant work has gone into developing virus-resistant cassava cultivars, there has been little research effort aimed at understanding the ecology of these insect vectors. Here we assess critically the knowledge base relating to factors that may lead to high population densities of sub-Saharan African (SSA) B. tabaci species in cassava production landscapes of East Africa. We focus first on empirical studies that have examined biotic or abiotic factors that may lead to high populations. We then identify knowledge gaps that need to be filled to deliver sustainable management solutions. We found that whilst many hypotheses have been put forward to explain the increases in abundance witnessed since the early 1990s, there are little published data and these tend to have been collected in a piecemeal manner. The most critical knowledge gaps identified were: (i) understanding how cassava cultivars and alternative host plants impact population dynamics and natural enemies; (ii) the impact of natural enemies in terms of reducing the frequency of outbreaks and (iii) the use and management of insecticides to delay the development of resistance. In addition, there are several fundamental methodologies that need to be developed and deployed in East Africa to address some of the more challenging knowledge gaps.

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First report of Bemisia tabaci Mediterranean (Q biotype) species in Brazil

Abstract: Our results indicate the presence of the MED species in Brazil. The close monitoring of this new identified species in the southern region of Brazil is essential to avoid its geographical expansion to more important agricultural areas in the country.

Cited by 59 publications

References 25 publications

Mitochondrial DNA and trade data support multiple origins of Helicoverpa armigera (Lepidoptera, Noctuidae) in Brazil

Mitochondrial DNA and trade data support multiple origins of Helicoverpa armigera (Lepidoptera, Noctuidae) in Brazil

Multiple incursion pathways forHelicoverpa armigerain Brazil show its genetic diversity spreading in a connected world

Cassava whitefly,Bemisia tabaci(Gennadius) (Hemiptera: Aleyrodidae) in East African farming landscapes: a review of the factors determining abundance

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