RESUMO
Progressive ataxia, particularly of the hind limbs, developed in a paretic female juvenile captive North American river otter (Lontra canadensis). Severe bilaterally symmetrical axonal degeneration in the medulla oblongata (nucleus gracilis and nucleus cuneatus) and multiple scattered spheroids in the region of the pons were detected microscopically. This is the first description of ataxia associated with axonal degeneration in otters.
Assuntos
Ataxia/veterinária , Tronco Encefálico/patologia , Encéfalo/patologia , Lontras , Animais , Animais de Zoológico , Ataxia/etiologia , Evolução Fatal , Feminino , Esferoides CelularesRESUMO
Generalized feather abnormalities are rarely documented in free-living birds. Pinching off syndrome (POS) is a feather abnormality in which all remiges and retrices become malformed and are lost during the nestling stage, rendering the bird unable to fly. To determine the frequency of occurrence and geographic distribution of this syndrome in white-tailed sea eagles (Haliaeetus albicilla) in Europe, we sent questionnaires to ornithologists in 19 countries within the European range of this species. We also searched for reported cases of sea eagles with feather abnormalities that met the criteria of POS. Overall, 32 nestlings or fledglings with POS were identified between 1975 and 2006. The geographic distribution of cases was primarily restricted to 4 European countries: Germany (17 cases), Poland (11 cases), the Czech Republic (3 cases), and Great Britain (1 case). Eleven eagles from Germany and 2 eagles from the Czech Republic were examined clinically. In 15 birds in which sex was determined, 8 were female and 7 were male. From 2000 to 2005, the 5-year incidence of POS in white-tailed sea eagles in Germany was 3.5 cases per 1000 birds. Although the etiology of this syndrome in wild sea eagles is unknown, our results support a possible genetic cause.
Assuntos
Doenças das Aves/epidemiologia , Doenças das Aves/etiologia , Águias , Plumas/anormalidades , Voo Animal/fisiologia , Animais , Animais Selvagens , Doenças das Aves/genética , Europa (Continente)/epidemiologia , Feminino , Predisposição Genética para Doença , Masculino , Prevalência , SíndromeRESUMO
A total of 164 blood samples, collected from free-ranging red deer (Cervus elaphus), roe deer (Capreolus capreolus) and fallow deer (Dama dama) in six German national parks (NP) between 2000 and 2002, were assayed for antibodies against nine viral disease agents. Antibodies were only detected against the alpha-herpesviruses; specifically, bovine herpesvirus-1 (BHV-1) (22 of 157, 14%), cervid herpesvirus-1 (17 of 157, 10.8%), and caprine herpesvirus-1 (11 of 159, 6.9%). Titers ranged from 4 to 102. Most of the seropositive sera, and those with the highest antibody titers, were from red and roe deer in the Harz and Hochharz NP, which are connected and allow migration between the two. The distribution and specificity of antibodies detected in individual deer suggests that the three alpha-herpesviruses are circulating in these deer populations. No antibodies were detected against bovine viral diarrhea virus, epizootic hemorrhagic disease virus, bovine leukemia virus, bluetongue virus, foot-and-mouth disease virus, or sheep and goat poxvirus.
Assuntos
Anticorpos Antivirais/sangue , Cervos/virologia , Infecções por Herpesviridae/veterinária , Herpesviridae/imunologia , Viroses/veterinária , Animais , Animais Selvagens/virologia , Feminino , Alemanha/epidemiologia , Infecções por Herpesviridae/epidemiologia , Masculino , Estudos Soroepidemiológicos , Viroses/epidemiologiaRESUMO
One hundred sixty-seven plasma samples of free-living birds of prey from Berlin and Brandenburg State (Germany) were tested for antibodies against avian adenovirus (FAV, group I) using agar gel precipitation test. Antibodies to FAV were detected in seven (4%) of 167 total samples. The positive samples originated only from common buzzards (Buteo buteo; seven [12%] of 59). This serologic survey provides evidence of natural exposure of free-living common buzzards from eastern Germany to adenoviruses.
Assuntos
Infecções por Adenoviridae/veterinária , Anticorpos Antivirais/sangue , Aviadenovirus/imunologia , Doenças das Aves/epidemiologia , Aves Predatórias , Infecções por Adenoviridae/epidemiologia , Infecções por Adenoviridae/imunologia , Animais , Doenças das Aves/imunologia , Embrião de Galinha , Alemanha/epidemiologia , Testes de Precipitina/veterinária , Prevalência , Estudos Soroepidemiológicos , Organismos Livres de Patógenos EspecíficosRESUMO
Organ samples from free-living raptors from the federal states of Berlin and Brandenburg in eastern Germany were tested for Newcastle disease virus (NDV; n = 331) and Chlamydia psittaci (n = 39) by polymerase chain reaction (PCR). In 18 individuals NDV nucleic acids were detected. These samples originated from barn owls (Tyto alba; n = 15, 28%), tawny owl (Strix aluco; n = 1, 5%), common buzzard (Buteo buteo, n = 1, 1%), and European kestrel (Falco tinnunculus; n = 1, 4%). In 29 (74%) of 39 samples C. psittaci was detected. Chlamydia psittaci is common in free-living birds of prey in the investigated area.
Assuntos
Doenças das Aves/epidemiologia , Chlamydophila psittaci/isolamento & purificação , Doença de Newcastle/epidemiologia , Vírus da Doença de Newcastle/isolamento & purificação , Psitacose/veterinária , Aves Predatórias , Animais , Sequência de Bases , Doenças das Aves/patologia , Surtos de Doenças/veterinária , Alemanha/epidemiologia , Doença de Newcastle/patologia , Reação em Cadeia da Polimerase/veterinária , Psitacose/epidemiologia , Psitacose/patologia , Especificidade da Espécie , EstrigiformesRESUMO
We examined 1,022 free-living roe deer, red deer, and fallow deer for mycobacteria in Germany, 2002-2006. Retropharyngeal lymph nodes and other tissues were processed for culture and isolates were identified with the use of polymerase chain reaction and DNA sequencing. Mycobacteria were found in 18.3% of deer, with Mycobacterium avium in 14.8%. Other atypical mycobacteria were detected in 5.3%. Members of the Mycobacterium tuberculosis complex were not detected.
Assuntos
Cervos/microbiologia , Infecções por Mycobacterium/veterinária , Mycobacterium avium/isolamento & purificação , Mycobacterium/isolamento & purificação , Tuberculose/veterinária , Animais , Animais Selvagens/microbiologia , Reservatórios de Doenças/veterinária , Feminino , Alemanha/epidemiologia , Masculino , Infecções por Mycobacterium/epidemiologia , Infecções por Mycobacterium/transmissão , Tuberculose/epidemiologia , Tuberculose/transmissãoRESUMO
The purpose of this study was to investigate the aetiology of the pinching off syndrome (POS), a generalized feather abnormality affecting free-living nestling of the white-tailed sea eagle (Haliaeetus albicilla) in Europe. For the first time, extensive clinical, haematological, biochemical, virological, bacteriological, nutritional, histopathological, parasitological and electron microscopical examinations were performed on three females and one male suffering from POS. Early and increased cytokeratin formation at the base of regenerating feathers and their follicle was observed in affected birds. Ultrathin sections of the feather papillae revealed an extended stratum transitivum and a compact, thickened keratinized stratum corneum. The transitional cells in POS feathers contained vacuoles often associated with the nucleus. Lipofuscin accumulations in neurons, glial cells and islet cells of the pancreas were found in all examined birds. It was not clear whether there is an association between the occurrence of lipofuscin and POS. No evidence was found to suggest that infectious agents (parasites, bacteria, fungi or viruses), malnutrition or hormonal imbalances are involved in the aetiology of POS in white-tailed sea eagles. It remains unclear whether there is a genetic background of POS.
Assuntos
Doenças das Aves/etiologia , Doenças das Aves/patologia , Águias , Plumas/patologia , Animais , Doenças das Aves/sangue , Doenças das Aves/genética , Águias/sangue , Águias/genética , Feminino , Masculino , Síndrome , Tiroxina/sangueRESUMO
Two studies were performed to elucidate the current distribution of the tick Dermacentor reticulatus in Germany. In the first one in 2003, a total of 365 dogs from 171 sites in the states of Berlin and Brandenburg was screened for ticks, and the corresponding outdoor sites that the dogs usually visited were searched for host-seeking ticks by the flagging method. A total of 1155 ticks was removed from the dogs. The majority were Ixodes ricinus (88.5%), followed by D. reticulatus (9.1%) and I. hexagonus (2.4%). Altogether, 222 dogs carried I. ricinus (60.8%), 41 D. reticulatus (11.2%) and 15 I. hexagonus (4.1%) ticks. Based on scutal index determination, the removed I. ricinus and D. reticulatus had been feeding on the dogs for a mean of 4.0 and 4.5 days, respectively. The dogs infested with D. reticulatus lived at 26 different sites, all previously unknown as Dermacentor sites. Seven of the sites could be confirmed subsequently by flagging the vegetation for ticks. In the second study, a total of 721 deer was shot at 201 different sites from a total of 160 districts all over Germany during the autumn hunting season 2004. A total of 23 deer (3.2%) originating from 14 sites was infested with D. reticulatus. Hereby, significantly more red deer (Cervus elaphus elaphus) than roe deer (Capreolus capreolus) or fallow deer (Dama dama) harboured D. reticulatus ticks. Only two of the sites found had already been known as D. reticulatus areas, whereas all other sites in Brandenburg, Saxony Anhalt, Hesse and Bavaria had been unknown. The results of both studies show that D. reticulatus presently occurs at far more sites than previously known in Germany and thus most likely has expanded its range. Additionally, a total of 135 D. reticulatus removed from deer was screened for Babesia canis and Rickettsia sp. by PCR. A total of 31 D. reticulatus (23%) were positive for Rickettsia. Sequencing revealed in all cases 100% identity with the strain RpA4 that was first isolated from Rhipicephalus ticks in Russia.
Assuntos
Dermacentor/microbiologia , Doenças do Cão/parasitologia , Rickettsia/isolamento & purificação , Infestações por Carrapato/veterinária , Animais , Babesia/isolamento & purificação , DNA Bacteriano/análise , DNA de Protozoário/análise , Cervos/parasitologia , Cães , Feminino , Alemanha/epidemiologia , Ixodes/microbiologia , Masculino , Infestações por Carrapato/epidemiologiaRESUMO
An active survey on transmissible spongiform encephalopathies was performed from 2002 to 2005 on 4,255 roe deer, 1,445 red deer, and 1,604 fallow deer in Germany. All cervids tested negative. This survey has been the largest in European wildlife and provides no evidence of prion diseases in free-living German cervids.