Ronald J. Kendall

Ronald J. Kendall
Texas Tech University | TTU · Wildlife Toxicology Laboratory

Doctor of Philosophy and SETAC Fellow

About

295
Publications
54,819
Reads
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6,605
Citations
Introduction
Ronald J. Kendall heads up the Wildlife Toxicology Laboratory (www.wildlifetoxicologylab.org) at Texas Tech University. He is founding director of The Institute of Environmental and Human Health (TIEHH) & founding department chair of the Department of Environmental Toxicology at Texas Tech. He is Editor, Terrestrial Toxicology, for the scientific journal "Environmental Toxicology and Chemistry", published through the Society of Environmental Toxicology and Chemistry (SETAC). He is a SETAC Fellow.
Education
January 1980 - December 1980
January 1977 - January 1980
Virginia Polytechnic Institute and State University
Field of study
  • Fisheries and Wildlife Sciences - WIldlife Toxicology
January 1974 - January 1976
Clemson University
Field of study
  • Wildlife Biology - Wildlife Toxicology

Publications

Publications (295)
Article
Full-text available
The northern bobwhite quail (Colinus virginianus) is a popular gamebird in the Rolling Plains Ecoregion of West Texas. However, there has been a population decline in this area over recent decades. Consistent reports indicate a high prevalence of the eyeworm (Oxyspirura petrowi) and caecal worm (Aulonocephalus pennula), which may be of major influe...
Article
Full-text available
Background: Oxyspirura petrowi (Spirurida: Thelaziidae), a heteroxenous nematode of birds across the USA, may play a role in the decline of the northern bobwhite (Colinus virginianus) in the Rolling Plains Ecoregion of West Texas. Previous molecular studies suggest that crickets, grasshoppers and cockroaches serve as potential intermediate hosts of...
Article
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The potential of parasites to affect host abundance has been a topic of heated contention within the scientific community for some time, with many maintaining that issues such as habitat loss are more important in regulating wildlife populations than diseases. This is in part due to the difficulty in detecting and quantifying the consequences of di...
Article
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Northern bobwhites (Colinus virginianus) are a well known game bird that has been extensively studied and managed throughout its range for many decades. Despite this, bobwhites have continued a steady annual decline across the United States, irrespective of many well established conservation practices in place to mitigate this. Supplemental feeding...
Article
The monarch butterfly (Danaus plexippus) is among the best-known insects in the world, renowned for its conspicuousness, spectacular migration, and interesting biology. Unfortunately, monarch populations have declined dramatically due, in large part, to the widespread losses of the milkweed plants which they depend upon for reproduction. This has l...
Article
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The Northern bobwhite quail (Colinus virginianus) is a popular game bird that has been experiencing a well-documented decline throughout Texas since the 1960s. While much of this decline has been attributed to habitat loss and fragmentation, recent studies have identified other factors that may also contribute to decreasing quail populations. Paras...
Article
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Many recent studies have been focused on prevalence and impact of two helminth parasites, eyeworm Oxyspirura petrowi and caecal worm Aulonocephalus pennula, in the northern bobwhite quail (Colinus virginianus). However, few studies have attempted to examine the effect of these parasites on the bobwhite immune system. This is likely due to the lack...
Article
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Based on sequence homology and phylogenetic tree results, the first report of eyeworm Oxyspirura species larvae has been confirmed in a human patient from Vietnam. However, important information related to Oxyspirura larvae was not presented in the case study. This comment provides a more detailed comparison of the Oxyspirura larvae found in the hu...
Article
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Background: The monarch butterfly (Danaus plexippus) is a conspicuous insect that has experienced a drastic population decline over the past two decades. While there are several factors contributing to dwindling monarch populations, habitat loss is considered the most significant threat to monarchs. In the United States, loss of milkweed, particul...
Article
In this paper, hydrophilic PVA/TiO2 and hydrophobic PVDF/TiO2 microfibrous webs with varied TiO2 concentrations (0%, 1%, 3%, 5%, 10%, and 20%) were produced by the electrospinning technique. UV-visible spectrums were tested to demonstrate the photocatalytic properties of PVA/TiO2 and PVDF/TiO2 webs under visible light. Overall, PVDF/TiO2 exhibits h...
Article
A tensile properties testing study was conducted to understand the influence of thickness, cross‐head speed (speed of testing), gauge length (GL; specimen test length), and sample shape on important tensile properties of polyvinyl alcohol (PVA) nanofiber webs. The effects of each testing parameter on load at break, extension at break, Young's modul...
Article
Full-text available
Recently, the heteroxenous eyeworm, Oxyspirura petrowi, has gained attention due to its prevalence in the declining game bird, Northern bobwhite (Colinus virginianus), but the intermediate hosts of many nematodes remain unknown. However, identifying the intermediate host of O. petrowi with traditional techniques would be difficult and time-consumin...
Article
Drug (vitamin B2, riboflavin, VB2)/nanoparticle (TiO2, coated on drug surface) loaded poly(vinyl-alcohol) (PVA) nanofiber webs were successfully produced by the electrospinning process. The characteristics of nanofiber structure, chemical composition, mechanical properties, and drug release properties were investigated. The morphology and diameter...
Article
Membrane technology proved to be the most promising method for water treatment because of functionality, high efficiency, low cost and stability of smart membrane. In this study, novel effective PVDF/rGO/TiO2 nanofiber webs for oil/water separation are produced by incorporation of rGO/TiO2 nanoparticles in the electrospun solution. GO is prepared b...
Article
Full-text available
Helminth parasites have been a popular research topic due to their global prevalence and adverse effects on livestock and game species. The Northern bobwhite (Colinus virginianus), a popular game bird in the USA, is one species subject to helminth infection and has been experiencing a decline of > 4% annually over recent decades. In the Rolling Pla...
Article
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The Northern bobwhite quail (Colinus virginianus) is an important gamebird among hunters that has been experiencing a nationwide decline for N 50 yr. In West Texas, one of the last regions to experience this downward trend, research on bobwhite populations has focused on habitat variables and, increasingly, on parasitic infection. In bobwhite, two...
Article
Full-text available
Over the last few decades, there has been a decline in Northern bobwhite quail (Colinus virginianus) throughout their native range. While there are various factors that may be influencing this decline, it is suggested that parasites should be taken into consideration as a potential contributor in the Rolling Plains Ecoregion. High prevalence of the...
Article
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Physaloptera spp. are common nematodes found in the stomach and muscles of mammals, reptiles, amphibians, and birds. Physaloptera spp. have a complicated life cycle with multiple definitive hosts, arthropod intermediate hosts, aberrant infections, and possible second intermediate hosts or paratenic hosts. For example, Physaloptera sp. larvae have b...
Article
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The question of whether parasites can significantly influence host population dynamics is complex and debated. Since Anderson and May's groundbreaking theoretical work revealed the potential of parasites to influence host populations, several studies have demonstrated this potential experimentally, leading to an increased consideration of parasites...
Article
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We observed an instance of a greater roadrunner (Geococcyx californianus) capturing a juvenile quail in Mitchell County, Texas, on 7 July 2017. Despite very limited documentation of such events, the potential of roadrunners as predators of quail has long been suspected and requires further investigation.
Article
Full-text available
Northern bobwhite quail ( Colinus virginianus ), a popular gamebird among hunters, have been declining over recent decades in the Rolling Plains ecoregion. Investigations in the past few years have revealed a high prevalence of eyeworms ( Oxyspirura petrowi ) and caecal worms ( Aulonocephalus pennula ) in this ecoregion, prompting a need to better...
Article
Full-text available
Northern bobwhite quail (Colinus virginianus) are a highly sought-after game bird in the Rolling Plains of West Texas. Unfortunately, bobwhite populations in this area are subject to dramatic fluctuations and have been steadily decreasing over the past several decades. While many factors have been investigated as potential mechanisms of cyclic and...
Article
Full-text available
Northern bobwhite quail (Colinus virginianus) are a highly sought-after game bird in the Rolling Plains of West Texas. Unfortunately, bobwhite populations in this area are subject to dramatic fluctuations and have been steadily decreasing over the past several decades. While many factors have been investigated as potential mechanisms of cyclic and...
Article
Full-text available
Aulonocephalus pennula is a heteroxenous nematode that commonly infects a declining game bird, the northern bobwhite quail ( Colinus virginianus ). There is a lack of information on the life cycle of A. pennula and the potential effects of infection on bobwhites. In order to better understand the life cycle of this parasite, various species from th...
Article
Full-text available
Oxyspirura petrowi is a heteroxenous nematode found in northern bobwhite ( Colinus virginianus ) of the Rolling Plains ecoregion of Texas. Despite its impact on this popular gamebird, genetic level studies on O. petrowi remain relatively unexplored. To accomplish this, we chose the previously studied nuclear rDNA 18S region as well as the mitochond...
Article
Full-text available
Anecdotal reports of Northern bobwhite quail (Colinus virginianus) exhibiting strange behavior have raised suspicions of parasite induced host mortality (PIHM) in the Rolling Plains of West Texas. In 2017, we received 11 bobwhite carcasses associated with such reports and found parasites in all of these specimens. While further research is needed t...
Article
Full-text available
We have been monitoring wild Northern bobwhite quail (Colinus virginianus) on a research transect in Mitchell County, Texas. We captured a total of 51 bobwhites in March-May of 2016 and 2017 and examined them for eyeworm (Oxyspirura petrowi) and caecal worm (Aulonocephalus pennula) infections. In March 2017, bobwhites averaged 15 ± 10 eyeworms and...
Article
Full-text available
Aulonocephalus pennula is a nematode living in the caeca of the wild Northern bobwhite quail (Colinus virginianus) present throughout the Rolling Plains Ecoregion of Texas. The cytochrome oxidase 1 (COX 1) gene of the mitochondrial genome was used to screen A. pennula in wild quail. Through BLAST analysis, similarity of A. pennula to other nematode...
Article
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The bioavailability and uptake of silver from silver nanoparticles in soil was investigated. Two species of insects, Acheta domesticus and Tenebrio molitor, and two species of plants, Helianthus annuus and Sorghum vulgare, were exposed to a range of concentrations of silver nanoparticles in soil. Silver nanoparticles were charactrized by techniques...
Article
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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
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The uptake of silver from silver nanoparticles in soil was investigated in the presence of increasing concentrations of soil organic matter. Especially, the effect of Humus component of soil organic matter on the uptake of Ag from silver nanoparticles was studied. Two insect species, Acheta domesticus and Tenebrio molitor, and two plant species, He...
Article
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The widespread use of silver nanoparticles (Ag NPs) has facilitated their uninterrupted entry into various ecosystems. Nanoparticles are stabilized using a variety of approaches for various applications. The present study has investigated the uptake of polyvinylpyrrolidine (PVP) coated Ag NPs in a terrestrial system. Two insect (Acheta domesticus a...
Article
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The uptake of silver from silver nanoparticles in soil was investigated in the presence of increasing concentrations of Vermiculite, typical 2:1 clay. Two insect species, Acheta domesticus and Tenebrio molitor, and two plant species, Helianthus annuus and Sorghum vulgare, were exposed to silver nanoparticles in the presence of increasing concentrat...
Article
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Satisfactory oil sorption properties and biodegradability of natural fibers have generated renewed interest in the development of oil sorbents for potential use in the cleanup and recovery of offshore oil spills. The objective of this study was to compare the oil sorption capacity of three different types of nonwoven substrates made with two distin...
Article
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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
Electrospun polyvinyl alcohol (PVA) nanowebs treated with a mixture of honey and polyhexamethylene biguanides (PHMBs, commercially available as Reputex 20) were prepared and characterized to evaluate their applicability in wound dressing applications. Fourier transform infrared spectroscopy was used to confirm the incorporation of functional moieti...
Article
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Over the last three decades, the field of wildlife toxicology involving the assessment of toxic chemicals on the reproduction, health, and well-being of wildlife species has grown dramatically as a science involving both laboratory and field research. In the early years of the development of wildlife toxicology, there was a strong emphasis on labor...
Article
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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
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
Electrospun poly (vinyl alcohol) [PVA] nanowebs functionalized with a commercially available microbiocidal solution Reputex (TM) 20 were prepared. The active ingredient of Reputex (TM) 20 is polyhexamethylene biguanides, a safe antiseptic. Fourier Transform Infrared spectroscopy confirmed the functionalization of PVA nanowebs. Functionalized nanowe...
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
Electrospun poly(vinyl alcohol) (PVA) nanowebs treated with honey were prepared to exploit the high surface area of nanofibers and the many different beneficial properties of honey. Nanowebs fabricated from biocompatible polymers like PVA, and treated with natural substances like honey, may find use in various biomedical applications such as wound...
Article
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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
Article
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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
Northern bobwhite (Colinus virginianus) and scaled quail (Callipepla squamata) from the Rolling Plains ecoregion in Texas/Oklahoma were evaluated for organochlorine pesticides (OCs), Pb, and Hg. Of all OCs analyzed, only p,p'-DDE and p,p'-DDD were found in a few composite liver samples. Similarly, a small fraction of tissue samples had detectable l...
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...