Alan M. Fedynich's research while affiliated with Texas A&M University - Kingsville and other places

Publications (85)

Article
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Populations of northern bobwhites ( Colinus virginianus ; hereafter bobwhite) have been declining across their geographic range in North America, prompting consideration of the role parasites may play. We conducted this study to learn about the helminth fauna in South Texas, a region that supports a sustainable bobwhite population. Helminths were e...
Article
Helminths were examined from 145 scaled quail ( Callipepla squamata ) collected during the 2012–2013, 2013–2014 and 2014–2015 hunting seasons from a semi-arid region of Texas that spans four ecoregions. Helminth infracommunities were species poor, averaging 1.7 (range 1–4) species. Six species occurred within the component community of which one (...
Chapter
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The wildlife ranching industry relies on providing supplemental grain to game animals to enhance wildlife viewing and hunting opportunities. Unfortunately, environmental climate and storage conditions can create the production of aflatoxins, a toxic fungal metabolite. Our objective was to determine temporal differences in aflatoxin concentrations o...
Article
One hundred and sixty-one northern bobwhites ( Colinus virginianus ; hereafter ‘bobwhite’) were examined from the Rolling Plains ecoregion of Texas and western Oklahoma from 2011 to 2013. Complete necropsies yielded 13 species, of which two are new host ( Gongylonema phasianella ) and region ( Eucoleus contortus ) records and three ( Dispharynx nas...
Article
Mesocestoides spp. have a cosmopolitan distribution with zoonotic potential. Mesocestoides tetrathyridia were found under the pericardial sac, on the surface of the crop, and in the peritoneal cavity of a hunter-harvested northern bobwhite ( Colinus virginianus) and a scaled quail ( Callipepla squamata) collected during the 2016-2017 quail hunting...
Article
Gizzard helminths were examined in 100 (50 adult, 50 juvenile) female northern pintails (Anas acuta). Sixty-three individual helminths, representing 5 species (Amidostomum acutum, Echinuria uncinata, Epomidiostomum uncinatum, Streptocara crassicauda, and Gastrotaenia cygni) were found. Twenty-seven northern pintails were infected with 1-3 helminth...
Article
We developed nested PCR protocols and performed a multi-year survey on the prevalence of several protozoan parasites in wild northern bobwhite (Colinus virginianus) and scaled quail (Callipepla squamata) in the Rolling Plains ecoregion of Texas and Oklahoma (i.e., fecal pellets, bird intestines and blood smears collected between 2010-2013). Coccidi...
Article
Baylisascaris procyonis is a large ascarid of raccoons (Procyon lotor) and is a zoonotic threat. We documented the potential rate a raccoon population can contaminate their environment with B. procyonis eggs. We estimated the population size of raccoons using a 9 × 7 trapping grid of Havahart traps, identified locations of raccoon scats through sys...
Article
Northern Bobwhite (Colinus virginianus) populations in Texas have been declining during the past several decades. Declines have been attributed to habitat loss, but other causes and potential contributing factors (e.g., parasites, disease) have been posited. Little is known about helminth parasites in bobwhites from Texas. Previous studies often us...
Article
Baylisascaris procyonis is a nematode whose definitive host is the raccoon (Procyon lotor). Adult parasites are not particularly pathogenic to raccoons; however, larvae in intermediate hosts can cause visceral, ocular, and neural larva migrans. Humans serve as dead-end hosts and pathological responses are similar as those found in infected intermed...
Article
Baylisascaris procyonis is an intestinal nematode of raccoons ( Procyon lotor ). Within intermediate hosts, larvae can cause visceral, ocular, and neural migrans. Humans, especially children, have become infected after ingestion of larvated eggs at raccoon latrines. Eggs of B. procyonis have a thermal death point of 62 C. During 2012, we assessed t...
Article
We collected 180 Blue-winged Teal ( Anas discors ) in September and October 2002 from Florida, US (n=100, representing the eastern migratory corridor) and the Louisiana-Texas, US, border (n=80, representing the western migratory corridor) and examined for blood parasites using thin heart-blood smears. Leucocytozoon simondi, Haemoproteus nettionis,...
Article
We observed white-winged doves (Zenaida asiatica asiatica) feeding on Chinese tallow (Triadica sebifera) seeds in south Texas. We noted two types of foraging behavior from October through January during 2013-2015. We observed white-winged doves either plucking seeds directly from the branches or cooperatively feeding by one dove shaking a branch, a...
Article
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The Northern Bobwhite (Colinus virginianus) has declined across its range. The primary cause of this decline is thought to be habitat loss and fragmentation. However, there is speculation that factors such as parasites may play a role. South Texas recently was designated a Legacy Landscape of National Significance for Northern Bobwhite Conservation...
Article
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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
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Long-term data from the Breeding Bird Survey and Christmas Bird Count indicate that northern bobwhite (Colinus virginianus; hereafter, bobwhite) populations have declined since 1961 in all but 1 of the 31 states they occupy within the United States. This long-term population decline is largely due to habitat loss. However, several other factors, in...
Article
Historically, lead poisoning through lead shot ingestion was one of the largest health issues affecting waterfowl in North America. Lead shot was banned for use in waterfowl hunting in the US in 1991 and was banned in Canada in 1997. However, biologists need to understand how, and if, lead shot remaining in the environment will continue to impact w...
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Northern Bobwhites (Colinus virginianus) have been in decline throughout the southeastern US. Prevalence of Trichomonas gallinae in wild bobwhites is unknown, although T. gallinae caused morbidity and mortality in experimentally infected bobwhites. Many species of Columbidae (pigeons and doves) in Texas are hosts to T. gallinae. Bobwhites potential...
Article
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The effects of Oxyspirura petrowi infections in northern bobwhites (Colinus virginianus) are not well understood. While studies have reported O. petrowi infections, none have histopathologically examined the eye surface and intraorbital glands to assess cellular-level impacts associated with infection. This study is the first to document the histop...
Article
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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...
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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
Nineteen eastern white-winged doves Zenaida asiatica asiatica were hatched and raised in captivity and used to develop an aging key that 1) quickly identifies juveniles based on a series of morphological features, and 2) provides estimates of juvenile age based on primary feather replacement. Birds were photographed every three days from 17 to 170...
Article
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Oxyspirura petrowi appears to be emerging as a nematode parasite that could negatively impact Northern Bobwhite quail individuals and populations within Texas and other regions of the United States. Despite this eye worm's potential importance in the conservation of wild quail, little is known about the general biology and genome composition of O....
Article
Aflatoxin is a widely occurring and harmful mycotoxin produced by strains of Aspergillus spp. growing on vegetable matter. We investigated the concentration of aflatoxin needed to impair normal physiologic responses and induce acute morbidity and mortality in Northern Bobwhites (Colinus virginianus). Ten wild-caught adult bobwhites (five males and...
Article
Abstract Helminth community structure (prevalence and abundance) and patterns (associations and distributions) of gizzard worms were examined in blue-winged teal (Anas discors) migrating through south Texas to their wintering grounds (n = 50) and as they migrated back to their breeding grounds (n = 50). Three species of nematodes (Amidostomum acutu...
Article
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The helminth community composition and structure of 6 species of columbids residing in south Texas are reported and compared herein. Sixty individuals of the following species, rock pigeons (Columba livia [RP]), mourning doves (Zenaida macroura [MD]), Eurasian collared-doves (Streptopelia decaocto [ECD]), white-winged doves (Zenaida asiatica [WWD])...
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A survey of turkey vultures (Cathartes aura) in South Carolina revealed the presence of a novel haemoproteid. Haemoproteus catharti n. sp. is described from the slides developed from the blood of this vulture. The new species is a thick, halteridial form with complete margins, and is considered distinct from the other recognized haemoproteids from...
Article
Ninety-eight Green-winged Teal (Anas crecca) and 84 Northern Shoveler (Anas clypeata) gizzards were examined for ingested shot. One Northern Shoveler had lead and three had steel shot; 24 teal and 17 shovelers had composite nontoxic shot or nonlead metal fragments. Prevalence of ingested lead appears minimal and consistent with other studies conduc...
Article
Helminth communities of mottled ducks (Anas fulvigula) from Florida and Texas were species rich and diverse. The helminth component community in the mottled duck population from Texas contained more species than were found in the Florida host population. However, infracommunities of birds from Florida and Texas contained 9.5 ± 0.7 (mean ± SE) and 9...
Article
The helminth community at the southern periphery of the mallard (Anas platyrhynchos) breeding range on the Southern High Plains of Texas consisted of species commonly reported in this host at northern latitudes. Although prevalence, abundance, and dominance values varied and this helminth community was species-rich and diverse, species composition...
Article
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The influence of spatially distinct host subpopulations on helminth community structure and pattern was examined in a migratory avian host species. Forty helminth species represented by 24,082 individuals were collected from 184 blue-winged teal (Anas discors; BWT) from 2 primary migratory corridors in Florida (eastern migratory corridor; EMC) and...
Article
White-winged dove (Zenaida asiatica L.) exposure to environmentally accessible lead is a management concern. Detectable concentrations of lead were found in 142 (66%) of 214 white-winged doves collected in 2002 and 2003 at two wildlife management units in South Texas. Mean +/- SD lead concentration was 0.70 +/- 1.10 microg/g dry weight and ranged f...
Article
Estudios previos han demostrado que la técnica para determinar el sexo de adultos de la paloma alas blancas (Zenaida asiatica) por las características de la cloaca es muy confiable (90%), más que la técnica basada en las características del plumaje y el peso corporal. Una limitación de la técnica cloacal es que es necesario el uso de un espéculo na...
Article
Our study determined if white-winged doves (WWDs; Zenaida asiatica asiatica) breeding in locations where environmentally persistent contaminants occur in the Lower Rio Grande Valley of Texas have levels of contaminants that can hinder reproduction. During summer 2003, 70 (32 males, 38 females) adult WWDs were collected from 8 at-risk sites. Liver t...
Chapter
IntroductionSynonymsHistoryDistribution and Host RangeEtiologyEpizootiologyClinical SignsPathologyDiagnosisImmunityPublic and Domestic Animal Health ConcernsWildlife Population ImpactsTreatment and ControlLiterature Cited
Chapter
IntroductionSynonymsHistoryDistribution and Host RangeEtiologyEpizootiologyClinical SignsPathogenesisPathologyDiagnosisImmunityPublic Health ConcernsDomestic Animalc Health ConcernsWildlife Population Impacts and Management ImplicationsTreatment and ControlLiterature Cited
Article
Helminth community structure and pattern were assessed in 16 Ross' geese, Chen rossii, and 46 greater white-fronted geese, Anser albifrons, collected during winter 1999–2000 in Kleberg County, Texas, U.S.A. Helminths found in individual Ross' geese ranged from 1 to 6 species and from 1 to 95 individuals; infracommunities averaged 3.5 ± 0.3 (SE) spe...
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Wood storks (Mycteria americana) are endangered throughout their breeding range in the United States. Because of this, researchers have had little opportunity to thoroughly examine the continental wood stork population for endoparasites. The blood protozoan Haemoproteus crumenium has been identified from several populations of wood storks in North...
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The blue-winged teal (Anas discors L.), an abundant waterfowl species in North America, winters primarily in Mexico, Central America, and South America. Its transcontinental migratory behavior provides the opportunity to examine contaminant acquisition across a diverse biogeographic landscape that has varied environmental regulations and wildlife l...
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Wildlife biologists are increasingly being thrust onto the frontlines of wildlife disease management and surveillance in the United States. For example, biologists now routinely engage in oral vaccination of wildlife [e-g., Oral Rabies Vaccination Programs (QRVPs)] and collect specimens for both diagnostic purposes and disease surveillance or monit...
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Forty-eight scaled quail (Callipepla squamata) were collected during August 2002 at Elephant Mountain Wildlife Management Area in Brewster County, Texas, and examined for helminths. Eight species of helminths were found (5 nematodes and 3 cestodes), representing 2,811 individuals. Of these species, Gongylonema sp., Procyrnea pileata, and Choanotaen...
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Black Vultures (Coragyps atratus) and Turkey Vultures (Cathartes aura) are found throughout many parts of southeastern North America, but relatively little is known about the factors that may negatively impact their populations. We sur-veyed both species for blood parasites to learn more about factors that may influence their health. During 2000–20...
Article
Genetic variation was evaluated in Florida Mottled Ducks (Anas fulvigula), and Mottled Ducks from the larger Texas population using 22 allozyme and 5 microsatellite loci. Both marker types revealed differences in allele frequencies between populations and each population possessed rare and unique alleles. Overall allelic distributions were signific...
Article
Genetic variation was evaluated in Florida Mottled Ducks (Anas fulvigula), and Mottled Ducks from the larger Texas population using 22 allozyme and 5 microsatellite loci. Both marker types revealed differences in allele frequencies between populations and each population possessed rare and unique alleles. Overall allelic distributions were signific...
Article
There is limited information on blood parasites in scaled quail (Callipepla squamata) from Texas. In August 2002, 48 scaled quail, representing 10 fledged hatch-year juveniles, 12 subadults, and 26 adults, were collected at Elephant Mountain Wildlife Management Area in Brewster County, Texas. Two thin blood smears were made from each bird using hea...
Article
Blood parasites have been known to cause morbidity and mortality in waterfowl, particularly in Canada geese (Branta canadensis). However, little is known about blood parasites infecting Ross' geese (Chen rossii) and greater white-fronted geese (Anser albifrons). This study examined wintering Ross' and white-fronted geese for blood parasites. Blood...
Article
The haemoproteid community of 171 eastern white-winged doves (Zenaida asiatica asiatica) from the expanding Texas population was examined using thin blood smears. During summer 1997, heart blood was taken from doves within their historical breeding range (Lower Rio Grande Valley of Texas), an intermediate region (San Antonio and surrounding area),...
Article
Helminth communities of 171 fledged white-winged doves (Zenaida asiatica asiatica) from the expanding eastern population in Texas (USA) were examined from hosts collected 11 June to 19 September 1997 within their historical range, new breeding periphery, and an intermediate area. Eleven helminth species, representing 435 individuals, were found. He...
Article
The haemoproteid community of 171 eastern white-winged doves (Zenaida asiatica asiatica) from the expanding Texas population was examined using thin blood smears. During summer 1997, heart blood was taken from doves within their historical breeding range (Lower Rio Grande Valley of Texas), an intermediate region (San Antonio and surrounding area),...
Article
Supplemental feeding of game species and the use of backyard feeders to attract avian wildlife are common practices throughout the United States. However, these activities may expose wildlife to aflatoxins. We tested the hypothesis that wild birds would avoid consuming aflatoxin-contaminated feed. Individual northern bobwhites (Colinus virginianus)...
Article
Survival of Trichomonas gallinae was examined in white-winged dove (Zenaida asiatica) carcasses to assess whether birds that have been dead up to 8 hr can be sampled reliably for this protozoan. Carcasses of 100 T. gallinae-positive white-winged doves were separated into four groups of 25 birds, representing 2, 4, 6, and 8 hr post mortem sampling i...
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Thin blood smears of 75 wood storks (Mycteria americana) from Georgia (USA) were made during the summers of 1994-96 and examined for blood parasites. Haemoproteus crumenium was found in one of 71 juveniles and in two adults from a sample of two subadults and two adults. Intensity of infection in the juvenile and in each of the two adults was 11, 3,...
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Helminth communities of double-crested (Phalacrocorax auritus) and neotropic (Phalacrocorax brasilianus) cormorants from the midcoast of Texas were examined. Twenty-one helminth species were found; 17 species occurred in each host species, and 13 species co-occurred in both host species. The mean number of helminth species was similar, averaging 5....
Article
Helminth communities of 25 black-bellied (Dendrocygna autumnalis) and 25 fulvous (Dendrocygna bicolor) whistling-ducks from south Texas varied in composition, prevalence, dominance, and abundance. Twenty-eight helminth species were found, of which 20 occurred in each host species population. Twelve species co-occurred between host populations. Blac...
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The hemosporid community of 76 wild turkeys (Meleagris gallopavo silvestris) from South Carolina (USA) was examined using thin blood smears collected during January and February 1994. High prevalences and low abundances of hemosporids characterized this community. Leucocytozoon smithi and Haemoproteus meleagridis occurred in 100% and 54% of the tur...
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The structure and pattern of the hemosporid community of wintering waterfowl were examined based on thin blood smears collected from 43 cinnamon teal (Anas cyanoptera), 89 green-winged teal (Anas crecca), and 64 American wigeon (Anas americand) on the Southern High Plains of Texas. Thirty-two ducks (16%) were infected with Haemoproteus nettionis, H...
Article
Thin blood smears from 37 juvenile mallards (Anas platyrhynchos) collected in the Playa Lakes Region of Texas during summers 1990 and 1991 were examined for hemosporids. Only one bird was infected with a Plasmodium sp. Parasite intensity was seven per 10,000 erthrocytes. The low prevalence of Plasmodium sp. and the lack of other blood parasites in...
Article
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Article
Two hundred thirty-one mallards (Anas platyrhynchos) collected during 1989-91 on the Southern High Plains of Texas were examined for macroscopically detectable Sarcocystis spp. Only eight adult mallards were infected. Based on small quantified tissue samples, five, one, and two birds had light, medium, and heavy infections, respectively. Prevalence...
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Two species of hematozoa, Haemoproteus columbae and H. sacharovi, were observed on thin blood smears from populations of mourning doves (Zenaida macroura) in the Rolling Plains (RP, a semiarid dryland farming and grazing area) and Southern High Plains (SHP, an intensively cultivated and irrigated agricultural region with playa lakes) of western Tex...
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Conducted a 3-yr study on the Southern High Plains of Texas and E New Mexico to determine if migrating waterfowl return to the same wintering areas. Of 4768 ducks captured, 81 (1.7%) were recaptured or recovered within 100 km of their original capture site. For ducks returning the succeeding winter, homing rates were 1.8, 1.8, 1.4, 9.7, and <0.1% f...
Article
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about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact sup...
Article
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Waterfowl carcass surveys were conducted at 15 lakes on the Southern High Plains of Texas during the winter of 1985-1986 to obtain information on the extent and causes of waterfowl mortality. Carcasses and moribund waterfowl were collected during shoreline censuses and necropsied. One hundred forty-four waterfowl, representing eight species, were c...
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Ten thin blood smears from mourning doves (Zenaida macroura) infected with Haemoproteus maccallumi were examined by each of two observers using identical techniques and microscopy in an attempt to delineate the factors necessary to provide an accurate estimate of the number of parasites/n erythrocytes. The number of erythrocytes examined must be ac...
Article
Full-text available
about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact sup...
Article
Many undergraduate students at Texas A&M University-Kingsville are first generation students, in which their experiences are often local or regional in scope and their perspectives are shaped by family ties and cultural traditions. This paper evaluates the impact of a program designed to help range and wildlife students realize the value of obtaini...

Citations

... In recent years, gamebirds (Galliformes) have become the focus of several helminth community studies, because of the important role they play in the hunting industry in numerous countries worldwide (Calvete et al. 2003;Isomursu et al. 2008;Bruno et al. 2019). Many of these studies investigated the influence of host sex and age on helminth community patterns in various avian species, as potentially two of the main drivers of variation in helminth infection (Kalla et al. 1997;Calvete et al. 2003Calvete et al. , 2004Isomursu et al. 2006Isomursu et al. , 2008Landgrebe et al. 2007;Amundson et al. 2016;Nielsen et al. 2020;Shea et al. 2021). Age and sex differences are mitigated via two main routes, either exposure or susceptibility to parasites (Nielsen et al. 2020). ...