Apparent Range Expansion of Culicoides (Hoffmania) insignis (Diptera: Ceratopogonidae) in the Southeastern United States

Vigil, Stacey L.; Ruder, Mark G.; Shaw, David; Wlodkowski, John C.; Garrett, Kayla B.; Walter, Matthew; Corn, Joseph L.

doi:10.1093/jme/tjy036

Cited by 31 publications

(26 citation statements)

References 16 publications

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“…insignis extensively in the panhandle in 2017 and it has been collected in light traps in both Mississippi and Alabama as recently as 2014 [27]. Recent studies [61] have also documented the range of C . insignis extending into Mississippi and Louisiana.…”

Section: Discussionmentioning

confidence: 99%

Ecological niche modeling the potential geographic distribution of four Culicoides species of veterinary significance in Florida, USA

et al. 2019

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Epizootic hemorrhagic disease (EHD) is a viral arthropod-borne disease affecting wild and domestic ruminants, caused by infection with epizootic hemorrhagic disease virus (EHDV). EHDV is transmitted to vertebrate animal hosts by biting midges in the genus Culicoides Latreille (Diptera: Ceratopogonidae). Culicoides sonorensis Wirth and Jones is the only confirmed vector of EHDV in the United States but is considered rare in Florida and not sufficiently abundant to support EHDV transmission. This study used ecological niche modeling to map the potential geographical distributions and associated ecological variable space of four Culicoides species suspected of transmitting EHDV in Florida, including Culicoides insignis Lutz, Culicoides stellifer (Coquillett), Culicoides debilipalpis Hoffman and Culicoides venustus Lutz. Models were developed with the Genetic Algorithm for Rule Set Production in DesktopGARP v1.1.3 using species occurrence data from field sampling along with environmental variables from WorldClim and Trypanosomiasis and Land use in Africa. For three Culicoides species ( C . insignis , C . stellifer and C . debilipalpis ) 96–98% of the presence points were predicted across the Florida landscape (63.8% - 72.5%). For C . venustus , models predicted 98.00% of presence points across 27.4% of Florida. Geographic variations were detected between species. Culicoides insignis was predicted to be restricted to peninsular Florida, and in contrast, C . venustus was predicted to be primarily in north Florida and the panhandle region. Culicoides stellifer and C . debilipalpis were predicted nearly statewide. Environmental conditions also differed by species, with some species’ ranges predicted by more narrow ranges of variables than others. The Normalized Difference Vegetation Index (NDVI) was a major predictor of C . venustus and C . insignis presence. For C . stellifer , Land Surface Temperature, Middle Infrared were the most limiting predictors of presence. The limiting variables for C . debilipalpis were NDVI Bi-Annual Amplitude and NDVI Annual Amplitude at 22.5% and 28.1%, respectively. The model outputs, including maps and environmental variable range predictions generated from these experiments provide an important first pass at predicting species of veterinary importance in Florida. Because EHDV cannot exist in the environme...

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Section: Discussionmentioning

confidence: 99%

Ecological niche modeling the potential geographic distribution of four Culicoides species of veterinary significance in Florida, USA

et al. 2019

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“…We collected C. insignis extensively in the panhandle in 2017 and it has been collected in light traps in both Mississippi and Alabama as recently as 2014 [50,51]. Recent studies by Vigil et al [52] have also documented the range of C. insignis extending into Mississippi and Louisiana.…”

Section: Discussionmentioning

confidence: 99%

“…State forests in the panhandle were visited several times during the season and we also consistently sampled in North and South Walton Counties. Poor model agreement could also be an indication that C. insignis is recently expanding to habitats north of its historic distribution, as Vigil et al, [52] has noted. In other studies, vector Culicoides spp.…”

Section: Discussionmentioning

confidence: 99%

Ecological niche modeling the potential geographic distribution of fourCulicoidesspecies of veterinary significance in Florida

Sloyer

Burkett‐Cadena

Yang

et al. 2018

Preprint

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25Epizootic hemorrhagic disease (EHD) is a viral arthropod-borne disease affecting wild 26 and domestic ruminants. EHD virus (EHDV) is transmitted to vertebrate animal hosts by biting 27 midges in the genus Culicoides. Culicoides sonorensis Latreille is the only confirmed vector of 28 EHDV in the United States but is considered rare in Florida and not sufficiently abundant to 29 support EHDV transmission. This study used ecological niche modeling to map the potential 30 geographical distributions and associated ecological variable space of four Culicoides species 31 suspected of transmitting EHDV in Florida, including Culicoides insignis, Culicoides stellifer, 32 Culicoides debilipalpis and Culicoides venustus. Models were developed with the Genetic 33 Algorithm for Rule Set Production in DesktopGARP v1.1.3 using species occurrence data from 34 field sampling along with environmental variables from WorldClim and Trypanosomiasis and 35 Land use in Africa. For three Culicoides species (C. insignis, C. stellifer and C. debilipalpis) 96-36 98% of the presence points were predicted across the Florida landscape (63.77% -72.53%). 37 For C. venustus, models predicted 98.00% of presence points across 27.42% of Florida. 38 Geographic variations were detected between species. Culicoides insignis was predicted to be 39 restricted to peninsular Florida, and in contrast, C. venustus was predicted to be primarily in 40 north Florida and the panhandle region. Culicoides stellifer and C. debilipalpis were predicted 41 nearly statewide. Environmental conditions also differed by species, with some species' ranges 42 predicted by more narrow ranges of variables than others. The Normalized Difference 43 Vegetation Index (NDVI) was a major predictor of C. venustus and C. insignis presence. For C. 44 stellifer, Land Surface Temperature, Middle Infrared were the most limiting predictors of 45 presence. The limiting variables for C. debilipalpis were NDVI Bi-Annual Amplitude and NDVI 46 Annual Amplitude at 22.45% and 28.09%, respectively. The model outputs, including maps and 49 cannot exist in the environment without the vector, model outputs can be used to estimate the 50 potential risk of disease for animal hosts across Florida. Results also provide distribution and 51 habitat information useful for integrated pest management practices. 52 53

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“…The global distribution of bluetongue virus is defined by the presence of a competent insect vector, which is—with few exceptions—necessary for virus transmission between ruminants [ 3 , 4 ]. In North America, the predominant vector species is Culicoides sonorensis , although additional vectors exist in certain locations such as Florida (i.e., C. insignis ) [ 5 , 6 , 7 , 8 ]. Culicoides midges that become infected with BTV through an infective blood meal do not appear to manifest adverse effects and remain persistently infected and capable of transmitting virus to ruminant hosts throughout their life [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

The Genetic Diversification of a Single Bluetongue Virus Strain Using an In Vitro Model of Alternating-Host Transmission

Kopanke

Lee

Stenglein

et al. 2020

Viruses

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Bluetongue virus (BTV) is an arbovirus that has been associated with dramatic epizootics in both wild and domestic ruminants in recent decades. As a segmented, double-stranded RNA virus, BTV can evolve via several mechanisms due to its genomic structure. However, the effect of BTV’s alternating-host transmission cycle on the virus’s genetic diversification remains poorly understood. Whole genome sequencing approaches offer a platform for investigating the effect of host-alternation across all ten segments of BTV’s genome. To understand the role of alternating hosts in BTV’s genetic diversification, a field isolate was passaged under three different conditions: (i) serial passages in Culicoides sonorensis cells, (ii) serial passages in bovine pulmonary artery endothelial cells, or (iii) alternating passages between insect and bovine cells. Aliquots of virus were sequenced, and single nucleotide variants were identified. Measures of viral population genetics were used to quantify the genetic diversification that occurred. Two consensus variants in segments 5 and 10 occurred in virus from all three conditions. While variants arose across all passages, measures of genetic diversity remained largely similar across cell culture conditions. Despite passage in a relaxed in vitro system, we found that this BTV isolate exhibited genetic stability across passages and conditions. Our findings underscore the valuable role that whole genome sequencing may play in improving understanding of viral evolution and highlight the genetic stability of BTV.

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Apparent Range Expansion of Culicoides (Hoffmania) insignis (Diptera: Ceratopogonidae) in the Southeastern United States

Cited by 31 publications

References 16 publications

Ecological niche modeling the potential geographic distribution of four Culicoides species of veterinary significance in Florida, USA

Ecological niche modeling the potential geographic distribution of four Culicoides species of veterinary significance in Florida, USA

Ecological niche modeling the potential geographic distribution of fourCulicoidesspecies of veterinary significance in Florida

The Genetic Diversification of a Single Bluetongue Virus Strain Using an In Vitro Model of Alternating-Host Transmission

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