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Nicholas R Dunham

Nicholas R Dunham

Ph.D. (Texas Tech University)

About

18
Publications
4,413
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225
Citations
Introduction

Publications

Publications (18)
Article
Full-text available
The Northern Bobwhite ( Colinus virginianus ) has been steadily declining throughout much of its historic range for decades. The Rolling Plains ecoregion of Texas and western Oklahoma, historically rich with wild bobwhites and one of the last remaining quail strongholds, also has a declining population. During August and October in 2011-2013, 348 N...
Article
Full-text available
Northern bobwhite (Colinus virginianus) and scaled quail (Callipepla squamata) have experienced chronic declines within the Rolling Plains ecoregion of Texas. Parasitic infection, which has long been dismissed as a problem in quail, has not been studied thoroughly until recently. A total of 219 northern bobwhite and 101 scaled quail from Mitchell C...
Article
Full-text available
Abstract We captured 36 Northern Bobwhites (Colinus virginianus) in Mitchell County, Texas in June-September 2013, and examined them for the eyeworm Oxyspirura petrowi. We recovered 334 eyeworms from 28 of 29 adult bobwhites (97%); infections ranged from 1-40 worms and mean (±SD) abundance of 11.9±13.0. Three of seven juveniles were infected, and t...
Article
Full-text available
Northern Bobwhite (Colinus virginianus) and Scaled quail (Callipepla squamata) populations have seen a dramatic decline in the Rolling Plains ecoregion of Texas and Oklahoma, USA. There is a rising concern for the potential toxicity of neonicotinoids in birds. To investigate this concern, we examined crops of 81 Northern Bobwhite and 17 Scaled quai...
Article
Full-text available
Lesser prairie-chickens (Tympanuchus pallidicinctus) have been declining range wide since the early 1900's despite efforts to establish conservation and improve their habitat. In early 2014, the lesser prairie-chicken was listed as a threatened species under the U.S Endangered Species Act and the need to find out why they are declining is more impo...
Article
Full-text available
Supplemental feeding with corn to attract and manage deer is a common practice throughout Texas. Other species, including northern bobwhites (Colinus virginianus), are commonly seen feeding around supplemental deer feeders. In many cases, supplemental feeding continues year-round so feed supply stores always have supplemental corn in stock. Fluctua...
Article
Full-text available
Parasitic nematodes that infect quail have been understudied and long been dismissed as a problem in quail management. Within the Rolling Plains ecoregion of Texas, an area that has experienced quail population “boom and bust” cycles and ultimately a general decline, the need to determine why Northern bobwhite (Colinus virginianus) populations are...
Article
Full-text available
Oxyspirura petrowi is a parasitic nematode that infects wild birds. This parasite has a broad host range, but has recently been reported in high prevalences from native Galliformes species in the United States. In order to better understand the impact O. petrowi has on wild bird populations, we developed a quantitative PCR protocol to detect infect...
Article
Full-text available
Debilitating ocular diseases are often reported in avian species. By and large, helminth parasites have been overlooked in avian diseases and regarded as inconsequential. The decline of Northern bobwhite quail (Colinus virginianus) in the Rolling Plains ecoregion of Texas has prompted an investigation of the factors influencing their disappearance....
Article
Full-text available
Northern bobwhite ( Colinus virginianus ) and Scaled quail ( Callipepla squamata ) have been declining steadily throughout much of their historical range over the past few decades. Even the Rolling Plains of Texas, historically rich with wild quail and one of the last remaining quail strongholds, has been suffering a population decline, most notabl...
Article
Full-text available
Oxyspirura petrowi is a heteroxenous parasitic nematode that has been reported in high prevalences from birds in the Order Galliformes experiencing population declines in the USA. There is a paucity of information regarding the natural history O. petrowi, including the life cycle and effects of infection on wild bird populations. In order to study...
Article
Full-text available
Plains Lubber Grasshopper (Brachystola magna) as a Potential Intermediate Host for Oxyspirura petrowi in Northern Bobwhites (Colinus virginianus) – CORRIGENDUM - Volume 2 - WHITNEY M. KISTLER, SABRINA HOCK, BEATRICE HERNOUT, EVAN BRAKE, NIKKI WILLIAMS, CARSON DOWNING, NICHOLAS R. DUNHAM, NAVEEN KUMAR, UDAY TURAGA, JULIE A. PARLOS, RONALD J. KENDALL
Conference Paper
Full-text available
Supplemental feeding with corn to attract white-tail deer (Odocoileus virginianus) is a common practice throughout Texas. Other species, including Northern Bobwhites (Colinus virginianus), are commonly seen feeding around supplemental deer feeders. In many cases, supplemental feeding continues year-round so feed supply stores always have it in stoc...
Conference Paper
Full-text available
Aflatoxin is a fungal metabolite that is produced by strains of mold (Aspergillus flavus and Aspergillus parasiticus) and is known to be carcinogenic to humans and animals. It can commonly be found in corn which is used in supplemental feeders to attract Whitetail deer (Odocoileus virginianus) throughout Texas. However, this supplemental feeding pr...
Article
Full-text available
Abstract Northern bobwhite (Colinus virginianus) quail have experienced a dramatic decline in West Texas over the last 3 yr and investigation is underway to evaluate the role of parasites in this decline. One of the key parasites being investigated is the eyeworm (Oxyspirura petrowi). Live eyeworms were extracted from both live and dead northern bo...
Article
Full-text available
Abstract Three Northern Mockingbirds (Mimus polyglottos) and one Curve-billed Thrasher (Toxostoma curvirostre) from the Rolling Plains of Texas were sampled for eyeworms in September 2013. All four birds were infected with the eyeworm Oxyspirura petrowi.
Conference Paper
Background/Question/Methods Many cool-season grasses contain fungal endophytes in their aboveground tissues. These endophytes often produce alkaloid compounds which can be toxic to herbivores. Numerous studies have considered the effects of these fungal endophytes in agricultural grasses. Fungal endophytes in these grasses are known to deter herbi...

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