David Claborn - Academia.edu (original) (raw)

Papers by David Claborn

InTech eBooks, Mar 19, 2014

PubMed, Sep 1, 2002

The larval habitats of malaria vectors near the Demilitarized Zone of the Republic of Korea (ROK)... more The larval habitats of malaria vectors near the Demilitarized Zone of the Republic of Korea (ROK) were sampled from June through September 2000 to determine larval abundance and to identify environmental factors associated with high larval density. Six primary habitats were identified: rice fields, irrigation ditches, drainage ditches, stream pools, irrigation pools, and marshes. Most habitats harbored similar densities of larvae until August and September, when population densities in rice fields declined and those in irrigation pools increased. The primary vector in the ROK, Anopheles sinensis, occurred in water with a wide range of values for environmental factors, including pH, total dissolved solids, percent of surface covered with floating vegetation, and nitrate and phosphate concentrations. No environmental factor or combination of factors were found that were predictive of high larval densities. This study suggests that larval Anopheles are capable of developing in a wide range of stagnant, freshwater habitats in northern Kyunggi Province, ROK.

Insecticide and Acaricide Tests, 1985

Field tests were initiated in Kerr County, Texas with UC-27867 and AK-101. Rates of both compound... more Field tests were initiated in Kerr County, Texas with UC-27867 and AK-101. Rates of both compounds were applied as single mound drenches to individual colonies of the red imported fire ant (RIFA) at the Riverhill Country Club in Kerrville, Texas. Each rate was applied as a 1-gal mound drench to 20 individual colonies on 16 Jun 83, and monitored at intervals requested by the companies involved. Colony survival was determined by opening each mound with a shovel and noting the presence of defending workers.

Journal of the American Mosquito Control Association, 2021

The Asian longhorned tick, Haemaphysalis longicornis, is an invasive species, originally from eas... more The Asian longhorned tick, Haemaphysalis longicornis, is an invasive species, originally from eastern Asia, and was first reported in the USA in New Jersey. It is now reported in several eastern states. In 2018, researchers reported H. longicornis in northwest Arkansas (Benton County). This tick species is a proven vector of livestock and human diseases, which prompted the current survey of ticks in southwest Missouri. A tick drag in Greene County, Missouri, produced 2 H. longicornis nymphs on June 9, 2021. This is the first report of this species for both the state and county.

Journal of the American Mosquito Control Association, 2018

A survey of adult and immature mosquitoes in southern and western Missouri conducted from June 14... more A survey of adult and immature mosquitoes in southern and western Missouri conducted from June 14 to September 23, 2016, yielded 32 species and 7 genera. The invasive species Aedes albopictus and Ae. japonicus were dispersed widely in the state, but the survey failed to collect any Ae. aegypti. This note discusses the impact of changes in the Missouri mosquito fauna on the risk of human disease transmission.

Viral Outbreaks [Working Title], 2020

In 2015, Zika emerged as a vector-borne disease in the Americas, causing a variety of health issu... more In 2015, Zika emerged as a vector-borne disease in the Americas, causing a variety of health issues ranging from Guillain-Barre syndrome in adults to microcephaly in newborns. Following the documentation of mosquito-borne transmission of the disease in the southern United States, the Missouri Department of Health and Senior Services contracted with researchers at Missouri State University to complete a survey of possible mosquito vectors of the Zika in the state. The primary vector of the disease, Aedes aegypti, had been reported from Missouri in previous surveys from several decades ago, but a comprehensive survey of the state mosquitoes and never been completed. Researchers focused on mosquitoes that spend the immature stages in artificial containers because this is descriptive of the most important Zika vectors. The large survey over three years provided an opportunity for post hoc analysis of mosquito occurrence data across a variety of ecoregions inside the state, documenting c...

Current Issues in Global Health, Nov 21, 2018

Remote Sensing of Environment, 2003

Background: Nearly 1300 cases of leishmaniasis have been identified in American military personne... more Background: Nearly 1300 cases of leishmaniasis have been identified in American military personnel deployed to Iraq and Afghanistan. The symptoms of this disease can range from a mild, self-limiting cutaneous infection to a deadly visceral infection and are not prevented by chemoprophylaxis or immunization. Effective treatments, however, are available. The disease-causing parasite is spread through the bite of the female sand fly. Although the disease occurs in both the Old World and the New World, the parasite species differ between the hemispheres. The large number of cases in military veterans has caused some concern that Old World, temperate-adapted parasite species could be introduced into the native sand fly populations of American military facilities where veterans of the current conflicts return following their deployments. This paper reports part of a larger study to analyze the risk of such an accidental importation. Four potential habitats on two large Army facilities in ...

International Journal of Environmental Research and Public Health

The collapse of a country’s economy can have significant impacts on the health and healthcare inf... more The collapse of a country’s economy can have significant impacts on the health and healthcare infrastructure of the country. This paper compares the collapse of three national economies from widely separated regions: Venezuela, Zimbabwe, and the countries of the former Soviet Union. Despite significant differences in the environments and cultures of these countries, there are some common variables and outcomes shared by most of the countries including effects on healthcare workforce, disproportionate effects on marginalized populations, and resurgence of certain infectious diseases.

The Southwestern Naturalist

Journal of Entomological Science

Pro-Drone, an insect growth regulator (IGR) with juvenile hormone activity, was aerially applied ... more Pro-Drone, an insect growth regulator (IGR) with juvenile hormone activity, was aerially applied twice at the rates of 11.86 g AI/ha in large-scale field trials for control of the red imported fire ant, Solenopsis invicta Buren. Although Pro-Drone applications produced no significant effect at 3- and 8-months posttreatment, the IGR significantly reduced fire ant infestation after 10 months in southeastern Texas. This product represents the first registered, aerially applied IGR effective against the red imported fire ant.

InTech eBooks, Mar 19, 2014

PubMed, Sep 1, 2002

The larval habitats of malaria vectors near the Demilitarized Zone of the Republic of Korea (ROK)... more The larval habitats of malaria vectors near the Demilitarized Zone of the Republic of Korea (ROK) were sampled from June through September 2000 to determine larval abundance and to identify environmental factors associated with high larval density. Six primary habitats were identified: rice fields, irrigation ditches, drainage ditches, stream pools, irrigation pools, and marshes. Most habitats harbored similar densities of larvae until August and September, when population densities in rice fields declined and those in irrigation pools increased. The primary vector in the ROK, Anopheles sinensis, occurred in water with a wide range of values for environmental factors, including pH, total dissolved solids, percent of surface covered with floating vegetation, and nitrate and phosphate concentrations. No environmental factor or combination of factors were found that were predictive of high larval densities. This study suggests that larval Anopheles are capable of developing in a wide range of stagnant, freshwater habitats in northern Kyunggi Province, ROK.

Insecticide and Acaricide Tests, 1985

Field tests were initiated in Kerr County, Texas with UC-27867 and AK-101. Rates of both compound... more Field tests were initiated in Kerr County, Texas with UC-27867 and AK-101. Rates of both compounds were applied as single mound drenches to individual colonies of the red imported fire ant (RIFA) at the Riverhill Country Club in Kerrville, Texas. Each rate was applied as a 1-gal mound drench to 20 individual colonies on 16 Jun 83, and monitored at intervals requested by the companies involved. Colony survival was determined by opening each mound with a shovel and noting the presence of defending workers.

Journal of the American Mosquito Control Association, 2021

The Asian longhorned tick, Haemaphysalis longicornis, is an invasive species, originally from eas... more The Asian longhorned tick, Haemaphysalis longicornis, is an invasive species, originally from eastern Asia, and was first reported in the USA in New Jersey. It is now reported in several eastern states. In 2018, researchers reported H. longicornis in northwest Arkansas (Benton County). This tick species is a proven vector of livestock and human diseases, which prompted the current survey of ticks in southwest Missouri. A tick drag in Greene County, Missouri, produced 2 H. longicornis nymphs on June 9, 2021. This is the first report of this species for both the state and county.

Journal of the American Mosquito Control Association, 2018

A survey of adult and immature mosquitoes in southern and western Missouri conducted from June 14... more A survey of adult and immature mosquitoes in southern and western Missouri conducted from June 14 to September 23, 2016, yielded 32 species and 7 genera. The invasive species Aedes albopictus and Ae. japonicus were dispersed widely in the state, but the survey failed to collect any Ae. aegypti. This note discusses the impact of changes in the Missouri mosquito fauna on the risk of human disease transmission.

Viral Outbreaks [Working Title], 2020

In 2015, Zika emerged as a vector-borne disease in the Americas, causing a variety of health issu... more In 2015, Zika emerged as a vector-borne disease in the Americas, causing a variety of health issues ranging from Guillain-Barre syndrome in adults to microcephaly in newborns. Following the documentation of mosquito-borne transmission of the disease in the southern United States, the Missouri Department of Health and Senior Services contracted with researchers at Missouri State University to complete a survey of possible mosquito vectors of the Zika in the state. The primary vector of the disease, Aedes aegypti, had been reported from Missouri in previous surveys from several decades ago, but a comprehensive survey of the state mosquitoes and never been completed. Researchers focused on mosquitoes that spend the immature stages in artificial containers because this is descriptive of the most important Zika vectors. The large survey over three years provided an opportunity for post hoc analysis of mosquito occurrence data across a variety of ecoregions inside the state, documenting c...

Current Issues in Global Health, Nov 21, 2018

Remote Sensing of Environment, 2003

Background: Nearly 1300 cases of leishmaniasis have been identified in American military personne... more Background: Nearly 1300 cases of leishmaniasis have been identified in American military personnel deployed to Iraq and Afghanistan. The symptoms of this disease can range from a mild, self-limiting cutaneous infection to a deadly visceral infection and are not prevented by chemoprophylaxis or immunization. Effective treatments, however, are available. The disease-causing parasite is spread through the bite of the female sand fly. Although the disease occurs in both the Old World and the New World, the parasite species differ between the hemispheres. The large number of cases in military veterans has caused some concern that Old World, temperate-adapted parasite species could be introduced into the native sand fly populations of American military facilities where veterans of the current conflicts return following their deployments. This paper reports part of a larger study to analyze the risk of such an accidental importation. Four potential habitats on two large Army facilities in ...

International Journal of Environmental Research and Public Health

The collapse of a country’s economy can have significant impacts on the health and healthcare inf... more The collapse of a country’s economy can have significant impacts on the health and healthcare infrastructure of the country. This paper compares the collapse of three national economies from widely separated regions: Venezuela, Zimbabwe, and the countries of the former Soviet Union. Despite significant differences in the environments and cultures of these countries, there are some common variables and outcomes shared by most of the countries including effects on healthcare workforce, disproportionate effects on marginalized populations, and resurgence of certain infectious diseases.

The Southwestern Naturalist

Journal of Entomological Science

Pro-Drone, an insect growth regulator (IGR) with juvenile hormone activity, was aerially applied ... more Pro-Drone, an insect growth regulator (IGR) with juvenile hormone activity, was aerially applied twice at the rates of 11.86 g AI/ha in large-scale field trials for control of the red imported fire ant, Solenopsis invicta Buren. Although Pro-Drone applications produced no significant effect at 3- and 8-months posttreatment, the IGR significantly reduced fire ant infestation after 10 months in southeastern Texas. This product represents the first registered, aerially applied IGR effective against the red imported fire ant.