Impacts of laurel wilt disease on arthropod herbivores of North American Lauraceae

Riggins, John J.; Chupp, Adam D.; Formby, John P.; Dearing, Natalie; Bares, Hannah M.; Brown, Richard L.; Oten, Kelly

doi:10.1007/s10530-018-1838-5

Cited by 19 publications

(12 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Redbay and the closely related swampbay and silkbay trees begin to show symptoms within 2 weeks and can die within 4–6 weeks after initial infection (Hughes et al, 2015a). Laurel wilt has decimated redbay populations and has changed the structure of plant communities throughout the south‐eastern USA (Goldberg & Heine, 2009; Riggins et al, 2019). The recently discovered outbreaks of laurel wilt disease in sassafras plants in Kentucky and Tennessee suggest that the disease has the potential to move northwards (Loyd et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…The more spatially isolated swampbay and silkbay populations have also been affected by laurel wilt disease (Ploetz et al, 2017). Other plants in the Lauraceae, such as the endangered pondberry ( Lindera melissifolia ) and gulf licaria ( Licaria trianda ), are threatened with extinction, with unknown environmental consequences for any species that may depend on them (Goldberg & Heine, 2009; Ploetz et al, 2017; Riggins et al, 2019). In addition, commercial production of avocado is affected in southern Florida and threatened elsewhere (Ploetz et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Host density dependence and environmental factors affecting laurel wilt disease incidence

Choudhury

Hughes

et al. 2020

Plant Pathology

View full text Add to dashboard Cite

Host size, density, and distribution, in addition to climate, can affect the likelihood a pathogen will invade and saturate landscapes. Laurel wilt, caused by the vector‐borne pathogen Raffaelea lauricola, has devastated populations of native Lauraceae in the south‐eastern USA, and continues to spread. We surveyed 87 plots in six coastal islands in South Carolina, Georgia, and north Florida, and one inland site (Archbold Biological Station) in south Florida for laurel wilt‐affected and unaffected individual plants belonging to the genus Persea. The coastal island sites were surveyed once in 2008 or 2009, and the inland site was surveyed eight times from 2011 to 2013. Disease incidence per plot ranged from 0% to 96%, with mean disease incidence 42% across all sites. Disease incidence was positively correlated with trunk diameter and with density of hosts with trunk diameter >5 cm, but negatively correlated with the degree of clustering, which was highest for small trees. A recursive partitioning model indicated that higher disease incidence was associated with moderate temperatures, wider trunk diameter, lower relative humidity, and lower wind speeds. Disease progress over time at Archbold followed a Gompertz curve, plateauing at 3% in 2 years. The dispersal kernel for disease incidence from a focus followed a negative exponential distribution. The number of plots with diseased trees at Archbold was similar for redbay (P. borbonia) and swampbay (P. palustris) but was lower for silkbay (P. humilis). Understanding how host density, size, and diversity interact with environmental effects will help guide future risk prediction efforts.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Host density dependence and environmental factors affecting laurel wilt disease incidence

Choudhury

Hughes

et al. 2020

Plant Pathology

View full text Add to dashboard Cite

show abstract

“…Much is still unknown about the exact roles of redbays in ecosystems, but it is apparent that the disease-related changes are affecting insect communities. Riggins et al [115] found a significant reduction in populations of the Palamedes swallowtail butterfly in stands affected by laurel wilt and documented another 24 native arthropod species, all obligate specialists on lauraceous plants, that could be negatively affected by the disease.…”

Section: Ecological Impactsmentioning

confidence: 99%

Laurel Wilt: Current and Potential Impacts and Possibilities for Prevention and Management

Olatinwo

Fraedrich

Mayfield

2021

Forests

View full text Add to dashboard Cite

In recent years, outbreaks of nonnative invasive insects and pathogens have caused significant levels of tree mortality and disturbance in various forest ecosystems throughout the United States. Laurel wilt, caused by the pathogen Raffaelea lauricola (T.C. Harr., Fraedrich and Aghayeva) and the primary vector, the redbay ambrosia beetle (Xyleborus glabratus Eichhoff), is a nonnative pest-disease complex first reported in the southeastern United States in 2002. Since then, it has spread across eleven southeastern states to date, killing hundreds of millions of trees in the plant family Lauraceae. Here, we examine the impacts of laurel wilt on selected vulnerable Lauraceae in the United States and discuss management methods for limiting geographic expansion and reducing impact. Although about 13 species belonging to the Lauraceae are indigenous to the United States, the highly susceptible members of the family to laurel wilt are the large tree species including redbay (Persea borbonia (L.) Spreng) and sassafras (Sassafras albidum (Nutt.) Nees), with a significant economic impact on the commercial production of avocado (Persea americana Mill.), an important species native to Central America grown in the United States. Preventing new introductions and mitigating the impact of previously introduced nonnative species are critically important to decelerate losses of forest habitat, genetic diversity, and overall ecosystem value.

show abstract

“…The disastrous impact of laurel wilt has important implications for the ecosystem, including those on wildlife that rely on Lauraceae as a food source. On the 178 native arthropod species feeding on North American laurel wilt-susceptible host species, it is estimated that 14% are at high risk of endangerment due to laurel wilt, including 18 species of Lepidoptera such as the palamedes swallowtail butterfly, Papilio palamedes Drury (Lepidoptera: Papilionidae), which feeds exclusively on Lauraceae leaves [ 16 , 17 ]. In addition, songbirds, wild turkeys, bobwhite quails, and black bears also feed on the small drupes produced by redbay [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Use of Semiochemicals for the Management of the Redbay Ambrosia Beetle

Martini

Hughes

Conover

et al. 2020

Insects

View full text Add to dashboard Cite

This review highlights current advances in the management of the redbay ambrosia beetle, Xyleborus glabratus, a primary vector of the pathogenic fungus, Raffaelea lauricola, that causes laurel wilt. Laurel wilt has a detrimental effect on forest ecosystems of southeastern USA, with hundreds of millions of Lauraceae deaths. Currently, preventive measures mostly focus on infected-tree removal to potentially reduce local beetle populations and/or use of preventative fungicide applications in urban trees. Use of semiochemicals may offer an opportunity for the management of X. glabratus. Research on attractants has led to the development of α-copaene lures that are now the accepted standards for X. glabratus sampling. Research conducted on repellents first included methyl salicylate and verbenone and attained significant reduction in the number of X. glabratus captured on redbay and swamp bay trees treated with verbenone. However, the death rate of trees protected with verbenone, while lower compared to untreated trees, is still high. This work underscores the necessity of developing new control methods, including the integration of repellents and attractants into a single push-pull system.

show abstract

Impacts of laurel wilt disease on arthropod herbivores of North American Lauraceae

Cited by 19 publications

References 43 publications

Host density dependence and environmental factors affecting laurel wilt disease incidence

Host density dependence and environmental factors affecting laurel wilt disease incidence

Laurel Wilt: Current and Potential Impacts and Possibilities for Prevention and Management

Use of Semiochemicals for the Management of the Redbay Ambrosia Beetle

Contact Info

Product

Resources

About