Population Genetic Baseline of the First Plataspid Stink Bug Symbiosis (Hemiptera: Heteroptera: Plataspidae) Reported in North America

Jenkins, Tracie M.; Eaton, Tyler D.

doi:10.3390/insects2030264

Cited by 22 publications

(23 citation statements)

References 20 publications

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“…In previous studies, identical mitochondrial DNA sequences were obtained from 269 individuals collected across a wide spatial and temporal range in the southeastern USA [7], [13]. Notably, the sequence reported in the previous studies (accession no.…”

Section: Resultsmentioning

confidence: 96%

Fine-Scale Geographical Origin of an Insect Pest Invading North America

2014

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Invasive species may rapidly spread throughout new areas once introduced, which may potentially lead to serious damage to local fauna and flora. Information on geographical origins, introduction routes, and biology in native regions of such invasive species is of critical importance in identifying means of transport, preventing reintroduction, and establishing control/eradication methods. The plataspid stinkbug Megacopta cribraria, known as kudzu bug, recently invaded North America and now has become not only an agricultural pest of soybean but also a nuisance pest. Here we investigate the geographical origin of the invasive M. cribraria populations. Phylogeographical analyses based on 8.7 kb mitochondrial DNA sequences of the introduced and East Asian native Megacopta populations identified a well-supported clade consisting of the introduced populations and M. punctatissima populations in the Kyushu region of Japan, which strongly suggests that the invading M. cribraria populations are derived from a M. punctatissima population in the Kyushu region. Therefore, the region is proposed as a promising source of natural enemies for biological control of the invasive pest. Based on the phylogenetic information, relationship and treatment of the two Megacopta species are discussed.

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Section: Resultsmentioning

confidence: 96%

Fine-Scale Geographical Origin of an Insect Pest Invading North America

2014

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“…The kudzu bugs invading the United States originated from the Kyushu region of Japan (Jenkins and Eaton 2011, Hosokawa et al 2014), showing a single female lineage (Jenkins et al 2010). Kudzu bugs have piercing-sucking mouthparts, like the stink bugs (Pentatomidae) to which they are related.…”

Section: Biology and Ecologymentioning

confidence: 99%

Ecology and Management of Kudzu Bug (Hemiptera: Plataspidae) in Southeastern Soybeans

Lahiri

Reisig

2016

J Integr Pest Manag

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Kudzu bug, Megacopta cribraria Fabricius (Hemiptera: Plataspidae), is an invasive exotic pest of soybeans that has been present in the southeastern United States since 2009 and has been rapidly spreading through soybean-producing states. Their primary reproductive hosts in the United States are soybean, kudzu, pigeon pea, black eye pea, lima bean, pinto bean, wisteria, white sweet clover, white clover, red clover, alfalfa, perennial peanut, and American joint vetch. In soybeans, the kudzu bug feeds on vascular fluids at the stem, petiole, and nodes, causing yield losses of up to 60%. The current management recommendation for this pest includes spraying of pyrethroids such as bifenthrin, but this method is not environmentally friendly, as this negatively impacts beneficial insect populations. Sustainable management tactics, including the development of economic thresholds for insecticide sprays, assessing the spatial and temporal distribution of this pest, manipulating cultivation practices, use of biological control, and host plant resistance, are currently being explored. We present an overview of the ecology of the kudzu bug in soybeans and available management tactics to assist with the management of this potentially devastating pest of soybeans as it spreads westward.

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“…This is important as the insects display a mixed pattern of soybean infestation in the US, with some localities not as affected as others (Suiter et al . ; Jenkins & Eaton ), and colour and size variation in the insects, with at least one case apparently varying with host plant (see Fig. S1, Supporting information).…”

Section: Introductionmentioning

confidence: 99%

“…Within 9 months of the initial US invasion, M. cribraria was found on soybeans (Glycine max) and is now a widespread US soybean crop pest. This was unexpected because the US insect genetically and morphologically resembles M. cribraria in Asia, which are considered to be 'nonpests' that rarely infest crop legumes (Hosokawa et al 2005(Hosokawa et al , 2007Jenkins & Eaton 2011). In Japan, a closely related but genetically distinct insect (Megacopta punctatissima) is a frequent pest of soybeans, having significantly higher fitness on soybeans than the nonpest M. cribraria (Hosokawa et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Population genomics of a symbiont in the early stages of a pest invasion

et al. 2013

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Invasive species often depend on microbial symbionts, but few studies have examined the evolutionary dynamics of symbionts during the early stages of an invasion. The insect Megacopta cribraria and its bacterial nutritional symbiont Candidatus Ishikawaella capsulata invaded the southeastern US in 2009. While M. cribraria was initially discovered on wild kudzu plants, it was found as a pest on soybeans within 1 year of infestation. Because prior research suggests Ishikawaella confers the pest status--that is, the ability to thrive on soybeans--in some Megacopta species, we performed a genomic study on Ishikawaella from US. Megacopta cribraria populations to understand the role of the symbiont in driving host plant preferences. We included Ishikawaella samples collected in the first days of the invasion in 2009 and from 23 locations across the insect's 2011 US range. The 0.75 Mb symbiont genome revealed only 47 fixed differences from the pest-conferring Ishikawaella in Japan, with only one amino acid change in a nutrition-provisioning gene. This similarity, along with a lack of fixed substitutions in the US symbiont population, indicates that Ishikawella likely arrived in the US capable of being a soybean pest. Analyses of allele frequency changes between 2009 and 2011 uncover signatures of both positive and negative selection and suggest that symbionts on soybeans and kudzu experience differential selection for genes related to nutrient provisioning. Our data reveal the evolutionary trajectory of an important insect-bacteria symbiosis in the early stages of an invasion, highlighting the role microbial symbionts may play in the spread of invasive species.

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Population Genetic Baseline of the First Plataspid Stink Bug Symbiosis (Hemiptera: Heteroptera: Plataspidae) Reported in North America

Cited by 22 publications

References 20 publications

Fine-Scale Geographical Origin of an Insect Pest Invading North America

Fine-Scale Geographical Origin of an Insect Pest Invading North America

Ecology and Management of Kudzu Bug (Hemiptera: Plataspidae) in Southeastern Soybeans

Population genomics of a symbiont in the early stages of a pest invasion

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