STUDIES ON ENDOPARASITES OF THE BLACK BEAR (Ursus americanus) IN THE SOUTHEASTERN UNITED STATES

Crum, James M.; Nettles, Victor F.; Davidson, William R.

doi:10.7589/0090-3558-14.2.178

Cited by 90 publications

(43 citation statements)

References 15 publications

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“…The intensity of the infection was classified on the basis of the number of adult forms of E. aerophilus in the lungs: no worms, slight (1-5 adults), mild (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20), and moderate (more than 20) infection.…”

Section: Methodsmentioning

confidence: 99%

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Red foxes (Vulpes vulpes) as reservoirs of respiratory capillariosis in Serbia

Ilić

Becskei

Tasić

et al. 2016

Journal of Veterinary Research

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Introduction: The aim of the study was to determine the prevalence of respiratory capillariosis in red foxes (Vulpes vulpes) in some regions of Serbia. Material and Methods: The study was conducted on 102 foxes in six epizootiological regions of Serbia, during the hunting season between 2008 and 2012. Results: The presence of respiratory capillariosis in all tested epizootiological regions was confirmed. The E. aerophilus nematode was detected with overall prevalence of 49.02%. The diagnosis of E. aerophilus infection was confirmed by the determination of morphological characteristics of adult parasites found at necropsy and the trichurid egg types collected from the bronchial lavage and the content of the intestine. Conclusion: The presented results contribute to better understanding of the epidemiology of this nematodosis in Serbia. However, the high prevalence of capillaries in tested foxes, demonstrated in all explored areas, might suggest that foxes from other regions in Serbia may also be infected. The fact that domestic carnivores and humans can also be infected enhances the importance of the overall epidemiological status. To establish the relevant prevalence of respiratory capillariosis, further investigations and continous monitoring of parasitic fauna of carnivores are needed in the whole country.

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Section: Methodsmentioning

confidence: 99%

“…This nematode is epidemically the most important species from the Capillaria genus. It can be found in the trachea and in the great bronchi, scarcely in the nasal cavity and frontal sinuses of cats (17), dogs (27), foxes (1,25), coyotes (13), wolves (19), raccoons (23), bears, and other carnivores (6).…”

Section: Introductionmentioning

confidence: 99%

Red foxes (Vulpes vulpes) as reservoirs of respiratory capillariosis in Serbia

Ilić

Becskei

Tasić

et al. 2016

Journal of Veterinary Research

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“…Previously, sarcocysts of unnamed species were found in sections of six of 53 black bears (Ursus americanus) from the southeastern United States (Crum et al 1978), one of 92 in North Carolina (Dubey et al 1998), one of 132 from Florida (Cheadle et al 2002), and two of 46 in Oregon (Foreyt et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Sarcocystis arctosi sp. nov. (Apicomplexa, Sarcocystidae) from the brown bear (Ursus arctos), and its genetic similarity to schizonts of Sarcocystis canis-like parasite associated with fatal hepatitis in polar bears (Ursus maritimus)

Dubey

Rosenthal

Natarajan

et al. 2007

Acta Parasitologica

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The tissues of herbivores are commonly infected with cysts of parasites belonging to the apicomplexan genus Sarcocystis, but such sarcocysts are rare in bears. Here, we describe a new species, Sarcocystis arctosi, based on the mature sarcocysts identified in two brown bears (Ursus arctos) from Alaska, USA. Microscopic sarcocysts (37-75 × 20-42 µm) had thin walls (<1 µm). The outer layer of the sarcocyst, the parasitophorous vacuolar membrane (pvm), was wavy in outline and had minute undulations that did not invaginate towards the sarcocyst interior; these undulations occurred at irregular intervals and measured up to 100 nm in length and up to 60 nm width. The ground substance layer beneath the pvm was smooth and lacked microtubules. Longitudinally cut bradyzoites measured 5.6-6.8 × 0.7-1.8 µm. A major portion of nuclear small subunit rDNA sequence obtained from these sarcocysts was similar to that previously obtained from the hepatic schizonts of a S. canis-like parasite from polar bears (Ursus maritimus).

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“…En fauna salvaje norteamericana se ha descrito como huéspedes definitivos de S. mansonoides a Felis rufus (bobcats) (Watson et al, 1981;Heidt et al, 1988) y a Ursus americanus (oso negro) (Crum et al, 1978) y al Procyon lotor (mapache) que además puede albergar formas larvarias (Harkema, 1964). Además se tiene un reporte de un estudio realizado en las islas de las Antillas Holandesas, Curaçao, Bonaire y Aruba en donde como parte de la fauna parasitológica normal en gatos domésticos se identificó a S. mansonoides (Rep, 1975).…”

Section: Discussionunclassified

Huéspedes definitivos de Spirometra mansonoides (Cestoda, Diphyllobothriidae) en el Perú

Tantaleán

Michaud

2005

Rev peru biol

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ResumenSe realizó un estudio parasitológico en el zoológico Parque de Las Leyendas, Lima, Perú en el año de 1993. Se recolectaron 49 muestras de heces de carnívoros pertenecientes a cinco familias: Canidae, Ursidae, Procyonidae, Mustelidae y Felidae, éstas fueron procesadas usando métodos rutinarios para la búsqueda de huevos de helmintos. En las heces de tres especies de la familia Felidae, Puma concolor (puma andino y puma de la selva), Panthera onca (otorongo) y Leopardus pardalis (tigrillo) se identificaron huevos de Spirometra mansonoides.Palabras claves: Spirometra mansonoides, céstode, felino, huésped definitivo, Perú. AbstractA parasitology survey was conducted at the Parque de Las Leyendas Zoo in Lima, Peru at 1993. Forty nine stool samples of animals comprehended among five families of carnivores (Canidae, Ursidae, Procyonidae, Mustelidae, and Felidae) were collected and processed using routine methods for helminth ova detection. Three species of Felidae, Puma concolor, (puma andino and puma de la selva), Panthera onca (jaguar) and Leopardus pardalis (ocelot) had been infected with Spirometra mansonoides.Keywords: Spirometra mansonoides, cestoda, feline, definitive host. Peru. IntroducciónEn nuestro medio se tiene escaso conocimiento sobre las especies parasitarias que se encuentran habitualmente en la fauna silvestre. El presente estudio se realizó en un grupo de animales salvajes en cautiverio en el zooló-gico Parque Las Leyendas en Lima, Perú, con el fin de determinar la presencia de parásitos gastrointestinales y establecer un plan de tratamiento apropiado. Algunos de los parásitos que se encuentran en animales de vida silvestre pueden permanecer en sus huéspedes cuando se encuentran en cautiverio debido a la autoreinfección o la infección cuando las condiciones sanitarias, el alimento o la presencia de huéspedes intermediarios o vectores lo permiten; por ejemplo, los primates no humanos se infectan con oxyuroideos porque estos parásitos tienen ciclo de vida directo, los pinnípedos lo hacen con las larvas de ascáridos presentes en los peces marinos que ingieren como alimento (Soulsby, 1987). Los carnívo-ros son reservorios de protozoos, nemátodes, céstodes y trematodes, algunos de los cuales pueden infectar al hombre (por ejemplo: Toxoplasma gondii, Lagochilascaris minor, Spirometra mansonoides, Paragonimus spp.) (Soulsby, 1987). Sin embargo, poco se conoce sobre los huéspedes intermediarios o definitivos de estos parásitos en el Perú tanto en la fauna que proviene de su ambiente natural como en la que se encuentra en cautiverio; por este motivo, iniciamos este estudio en las especies de mamíferos carnívoros alojadas en el zoológico Parque Las Leyendas.

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STUDIES ON ENDOPARASITES OF THE BLACK BEAR (Ursus americanus) IN THE SOUTHEASTERN UNITED STATES

Cited by 90 publications

References 15 publications

Red foxes (Vulpes vulpes) as reservoirs of respiratory capillariosis in Serbia

Red foxes (Vulpes vulpes) as reservoirs of respiratory capillariosis in Serbia

Sarcocystis arctosi sp. nov. (Apicomplexa, Sarcocystidae) from the brown bear (Ursus arctos), and its genetic similarity to schizonts of Sarcocystis canis-like parasite associated with fatal hepatitis in polar bears (Ursus maritimus)

Huéspedes definitivos de Spirometra mansonoides (Cestoda, Diphyllobothriidae) en el Perú

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