Some Parasitic and Infectious Diseases in Waterfowl in Oklahoma

Kocan, A. Alan; Shaw, Michael G.; Morgan, Patrick M.

doi:10.7589/0090-3558-15.1.137

Cited by 11 publications

(14 citation statements)

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“…Consistent with previous studies (Kocan et al, 1979;Goekjian et al, 2011) we detected limited evidence of IAV circulation among wood duck populations. These results are supported by the very low antibody prevalence we observed across a very broad geographical area, including northern latitudes where IAVs are more likely to be detected in waterfowl .…”

Section: Discussionsupporting

confidence: 92%

“…In Canada geese, significant variation of IAV antibody prevalence has been reported at sample locations within 10 km of each other (Kistler et al, 2012). Only low prevalence estimates of NDV antibodies in North American waterfowl (less than 16%) have previously been reported (Kocan et al, 1979;Vickers & Hanson, 1982), and to our knowledge, there have been no reports of testing for antibodies to other APMVs in North American waterfowl. We detected antibodies to more than one APMV serotype in most of the wood duck sera tested against all four serotypes.…”

Section: Discussionmentioning

confidence: 75%

“…Several studies have reported negative results for IAV detection in wood ducks, but most of these studies included fewer than 60 individuals (Rosenberger et al, 1974;Bahl et al, 1975;Webster et al, 1976;Kocan et al, 1979;Nettles et al, 1985;Hinshaw et al, 1986;Slemons et al, 1991). Three studies have attempted to isolate virus from more than 100 wood ducks, and two of these studies reported a low prevalence (less than 2.5%) of viral shedding compared to other dabbling duck species Goekjian et al, 2011;Wilcox et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Two studies have reported IAV antibody test results for wood ducks, and in both cases no antibodies were detected (Kocan et al, 1979;Brown et al, 2010). One of these studies only tested serum from three wood ducks using a blocking ELISA (Brown et al, 2010), and the other study did not report sample size, but sera were tested by the agar gel immunodiffusion assay, which has been shown to perform poorly in waterfowl species (Bahl et al, 1975;Brown et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…What little information is known about IAVs and APMVs in wood ducks indicates that APMVs are isolated more frequently than IAVs . Antibodies to APMV in ducks have been reported in four studies (Kocan et al, 1979;Vickers & Hanson, 1982;Maldonado et al, 1995;Stanislawek et al, 2002). Two of these were conducted in North America, but they did not sample wood ducks and only tested for antibodies to NDV (Kocan et al, 1979;Vickers & Hanson, 1982).…”

Section: Introductionmentioning

confidence: 99%

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Wood ducks (Aix sponsa) as potential reservoirs for avian influenza and avian paramyxoviruses

et al. 2015

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Influenza A viruses (IAVs) and avian paramyxoviruses (APMVs) are important pathogens of poultry worldwide, and both commonly occur in wild waterfowl, especially ducks in the family Anatidae. Although wood ducks (Aix sponsa) are members of the Anatidae, their behaviour differs from most other species in this family, which could affect the transmission of IAVs and APMVs. We collected cloacal and oropharyngeal swab and blood samples from more than 700 wood ducks across nine states in the eastern United States of America. No IAVs were isolated, and based on blocking enzyme-linked immunoassay ELISA results, antibodies to IAVs were only detected in 0.2% of samples. In contrast, 23 (3%) APMVs were isolated (22 Newcastle disease virus and 1 APMV-6), and antibodies to multiple serotypes of APMVs were detected in more than 60% of the samples. After-hatch-year birds were more likely to be antibody positive for APMV-4 and APMV-6 compared to hatch-year birds. Female birds were more likely to be antibody positive for APMV-4 than were male birds. Our results indicate that wood ducks are probably not an important host for IAV but are frequently infected with APMVs.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Wood ducks (Aix sponsa) as potential reservoirs for avian influenza and avian paramyxoviruses

et al. 2015

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On reversing the northern bobwhite population decline: 20 years later

Hernández

Brennan

DeMaso

et al. 2012

Wildlife Society Bulletin

113

117

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The northern bobwhite (Colinus virginianus) decline has become a cause ce´le´bre of wildlife conservation during the past 2 decades. With few exceptions, current broad-scale population trends show ongoing erosion in bobwhite numbers across most of the species' range. The causes of these declines are ultimate factors exacerbated by certain proximate factors. Ultimate factors are centered on the loss and fragmentation of habitat. Proximate factors such as predation and disease also may be present. The impacts of some factors, such as climate change, remain unknown but may influence bobwhite population trajectories over the long term. Progress has occurred in bobwhite conservation efforts since 1990 and has culminated in the formation of the National Bobwhite Technical Committee and the publication of the Northern Bobwhite Conservation Initiative. The vast majority of prevailing agricultural, forestry, and to some extent rangeland land uses in the United States continue as threats to bobwhite population persistence in the foreseeable future. Land-use patterns that once sustained widespread abundance of northern bobwhite during the early 20th century clearly are past and likely never to return. Landscape features that sustain and elevate northern bobwhite populations will only be maintained as a function of purposeful management actions directed at saving and creating usable space. ß 2012 The Wildlife Society.KEY WORDS adaptive management, bobwhite, Colinus virginianus, conservation planning, northern bobwhite, Northern Bobwhite Conservation Initiative, quail.Two decades ago, Brennan (1991) published an article titled, ''How can we reverse the northern bobwhite population decline?'' The publication outlined a series of observations and issues related to factors that were responsible for the nearly range-wide decline of the northern bobwhite (Colinus virginianus). Northern bobwhites had been declining at a considerable rate across their geographic range prior to 1991, but very few conservationists had taken notice. The publication of Brennan (1991) seemed to awaken a complacent quail profession that did not appreciate the general status of northern bobwhite in the United States at the time.Since the publication of Brennan (1991), considerable effort has been directed at the conservation of northern bobwhite and its habitat. When cast in a broader context of the past 2 decades, it is clear that bobwhite conservation efforts have gained traction, and perhaps even an element of critical mass, that will provide a basis for further achievement. We examine what has happened to the northern bobwhite over the past 20 years in the context of ultimate and proximate factors that influence their mostly declining populations. We identify ongoing and emerging threats to bobwhite conservation and discuss the initiatives that wildlife professionals, landowners, quail hunters, and conservationists have developed in an effort to stop the decline. Lastly, we use this paper as a forum to clarify some misunderstandings that were ...

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Helminth community and host dynamics in northern bobwhites from the Rolling Plains Ecoregion, U.S.A.

et al. 2018

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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 nasuta, Tetrameres pattersoni and Oxyspirura petrowi) are known to cause morbidity and mortality. Of the species found, Aulonocephalus pennula commonly occurred, Oxyspirura petrowi was intermediate in prevalence, and the remaining species were rare. Species richness was similar compared to studies from the southeastern U.S., but higher than studies from the same region. In addition, 12 of the 13 species were heteroxenous helminths, supporting the theory that heteroxenous helminths in semi-arid regions are more successful than monoxenous helminths. Prevalence and abundance of A. pennula and O. petrowi were higher in adult bobwhites than in juveniles. Abundance of A. pennula and O. petrowi was higher at southern locations compared to northern locations in the study area. Our study is the first to provide a current assessment of the bobwhite helminth community across the Rolling Plains ecoregion of the U.S.

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Some Parasitic and Infectious Diseases in Waterfowl in Oklahoma

Cited by 11 publications

References 0 publications

Wood ducks (Aix sponsa) as potential reservoirs for avian influenza and avian paramyxoviruses

Wood ducks (Aix sponsa) as potential reservoirs for avian influenza and avian paramyxoviruses

On reversing the northern bobwhite population decline: 20 years later

Helminth community and host dynamics in northern bobwhites from the Rolling Plains Ecoregion, U.S.A.

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