Ecological Factors Influencing Pea Aphid Outbreaks in the US Pacific Northwest

Clement, Stephen L.; Husebye, Damon S.; Eigenbrode, Sanford D.

doi:10.1007/978-90-481-8601-3_7

Cited by 23 publications

(26 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…). Pea aphids are not known to overwinter in the Palouse (Clement, Husebye & Eigenbrode ) so the region likely does not contribute to maintenance of pea aphid genetic structure and host associations.…”

Section: Discussionmentioning

confidence: 99%

“…In the Pacific Northwest, USA (PNW), pea aphid is a pest of legumes, especially in pea and lentil grown in northern Idaho and south‐eastern Washington State (the Palouse region), one of the principal pulse‐growing regions of the United States (NASS ). Intermittent outbreaks of pea aphid in the Palouse have been documented over decades (Clement ; Clement, Husebye & Eigenbrode ), and these are associated with significant reduction in yields and economic returns to farmers (Elbakidze, Lu & Eigenbrode ). Pea aphid recolonizes the Palouse region each spring following winter extirpation resulting from late drying of crops and severe winter conditions (Clement ; Clement, Husebye & Eigenbrode ).…”

Section: Introductionmentioning

confidence: 99%

“…Intermittent outbreaks of pea aphid in the Palouse have been documented over decades (Clement ; Clement, Husebye & Eigenbrode ), and these are associated with significant reduction in yields and economic returns to farmers (Elbakidze, Lu & Eigenbrode ). Pea aphid recolonizes the Palouse region each spring following winter extirpation resulting from late drying of crops and severe winter conditions (Clement ; Clement, Husebye & Eigenbrode ). The putative source for these immigrants is the Columbia River Basin ( c .…”

Section: Introductionmentioning

confidence: 99%

“…200 km away), which is situated upwind, to the west of the Palouse and c . 700 m lower in elevation (Clement ; Clement, Husebye & Eigenbrode ) (Fig. ).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Host‐adapted aphid populations differ in their migratory patterns and capacity to colonize crops

Eigenbrode

Davis

Adams

et al. 2016

Journal of Applied Ecology

Self Cite

View full text Add to dashboard Cite

1. Although phytophagous insects can vary genetically in host use and exhibit long-range movements, the combined implications of these phenomena for pest management have received limited attention. 2. To address this, we surveyed the genetic diversity of pea aphid Acyrthosiphon pisum using twelve microsatellite loci and assessed host association patterns and annual movement from a putative source region (Columbia River Basin) to the Palouse region of northern Idaho and western Washington, where the aphid is a pest of pea Pisum sativum. 3. A total of 320 identified unique genotypes clustered into four genetic groups, with two host plant associations: alfalfa Medicago sativa (three genetic groups), and pea Pisum sativum and vetch Vicia villosa (one genetic group). All four genetic groups occurred in the Columbia River Basin and in migrant aphids collected in pan traps during spring colonization in the Palouse during 2 years of this study. Patterns of group arrival on the Palouse were spatially structured early in the season, consistent with differing migration patterns. Despite genetic diversity of migrants, a single genetic group became predominant in pea crops each year. 4. Clonal laboratory colonies of pea aphids established from field-collected specimens and representing two predominant genetic groups exhibited reciprocal performance trade-offs, with alfalfa being a poor host for a pea-associated aphid genotype and vice versa. 5. Synthesis and applications. Annual spring migrants of pea aphids in the pea production region of the Palouse are genetically diverse, with different host plant affinities consistent with origination from source populations in the Columbia River Basin. As the season progresses, a single genetic group adapted to pea becomes predominant in the crop. Management of pea aphid in the Palouse will be improved by monitoring the temporal and spatial variation of specific genetic groups of the aphid arriving as immigrants during each crop season, providing this information to producers and adjusting estimates of risk of crop damage accordingly. The principle could apply to other pest species with host-adapted populations that colonize crops on an annual basis.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…200 km away), which is situated upwind, to the west of the Palouse and c . 700 m lower in elevation (Clement ; Clement, Husebye & Eigenbrode ) (Fig. ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Host‐adapted aphid populations differ in their migratory patterns and capacity to colonize crops

Eigenbrode

Davis

Adams

et al. 2016

Journal of Applied Ecology

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the Palouse region of the northwestern USA, there are periodic outbreaks of pea aphid that result in virus epidemics, particularly PEMV; these cyclical population eruptions are likely to expose field crops including chickpea to virus inoculum (Clement, 2006;Clement et al, 2010). The aim of the present work was to provide evidence-based decision support tools to mitigate economic losses due to PEMV infection in chickpea crops.…”

Section: Introductionmentioning

confidence: 99%

Chickpea variety and phenology affect acquisition ofPea enation mosaic virus, subsequent plant injury and aphid vector performance

Davis

Eigenbrode

2015

Ann Appl Biol

View full text Add to dashboard Cite

Acquisition of Pea enation mosaic virus (PEMV) by chickpea (Cicer arietinum) when fed on by viruliferous pea aphid (Acyrthosiphon pisum) was tested for combinations of two chickpea varieties ('Bronic', a kabuli type and 'Sierra', a desi type) and three plant ages (14, 28 and 42 days after germination). It was determined whether inoculation with PEMV influenced plant growth and yield components, and the effect of variety × age combinations on the survival and fecundity of aphid vectors was evaluated. Three important findings emerged: (a) Acquisition of PEMV by chickpea depended on plant age. When inoculated at 14 or 28 days, most plants tested positive for PEMV at harvest, while rates of virus acquisition were reduced for 42 day-old plants. (b) Plant age at inoculation affected growth and yield parameters, and this effect differed between chickpea varieties. For both varieties, PEMV infection reduced plant height and biomass at harvest when plants were inoculated at 14 days. Only 'Sierra' exhibited significant reductions in plant height and biomass when inoculated at 28 days. Seed set was severely diminished for both varieties when plants were inoculated at 14 and 28 days after germination, but mature plants were not damaged in terms of growth or seed set. (c) The performance of pea aphid was influenced by both chickpea age and variety, with higher fecundities and longer lifespan when colonising 42 day-old plants as compared with younger plants, and better performance overall on 'Sierra'. This study reveals that chickpea can acquire PEMV at all ages tested, but the most damaging effects for growth and yield parameters occur when plants are inoculated at early phenological stages. Chickpea is a poor host for A. pisum in general, but plants can support vector populations long enough for PEMV transmission and subsequent yield reduction to occur.

show abstract

The Oxylipin Signaling Pathway Is Required for Increased Aphid Attraction and Retention on Virus-Infected Plants

et al. 2020

View full text Add to dashboard Cite

Ecological Factors Influencing Pea Aphid Outbreaks in the US Pacific Northwest

Cited by 23 publications

References 62 publications

Host‐adapted aphid populations differ in their migratory patterns and capacity to colonize crops

Host‐adapted aphid populations differ in their migratory patterns and capacity to colonize crops

Chickpea variety and phenology affect acquisition ofPea enation mosaic virus, subsequent plant injury and aphid vector performance

The Oxylipin Signaling Pathway Is Required for Increased Aphid Attraction and Retention on Virus-Infected Plants

Contact Info

Product

Resources

About