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Titolo:
Ichthyophonus-like infection in wild amphibians from Quebec, Canada
Autore:
Mikaelian, I; Ouellet, M; Pauli, B; Rodrigue, J; Harshbarger, JC; Green, DM;
Indirizzi:
Canadian Cooperat Wildlife Hlth Ctr, St Hyacinthe, PQ J2S 7C6, Canada Canadian Cooperat Wildlife Hlth Ctr St Hyacinthe PQ Canada J2S 7C6 Canada Ctr Quebecois Sante Anim Sauvages, St Hyacinthe, PQ J2S 7C6, Canada Ctr Quebecois Sante Anim Sauvages St Hyacinthe PQ Canada J2S 7C6 , Canada McGill Univ, Redpath Museum, Montreal, PQ H3A 2K6, Canada McGill Univ Montreal PQ Canada H3A 2K6 seum, Montreal, PQ H3A 2K6, Canada Canadian Wildlife Serv, Natl Wildlife Res Ctr, Ottawa, ON K1A 0H3, Canada Canadian Wildlife Serv Ottawa ON Canada K1A 0H3 ttawa, ON K1A 0H3, Canada Serv Canadien Faune, St Foy, PQ G1V 4H5, Canada Serv Canadien Faune St Foy PQ Canada G1V 4H5 , St Foy, PQ G1V 4H5, Canada George Washington Univ, Registry Tumors Lower Anim, Washington, DC 20037 USA George Washington Univ Washington DC USA 20037 , Washington, DC 20037 USA
Titolo Testata:
DISEASES OF AQUATIC ORGANISMS
fascicolo: 3, volume: 40, anno: 2000,
pagine: 195 - 201
SICI:
0177-5103(20000420)40:3<195:IIIWAF>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
SWEDISH WEST-COAST; NORTH-SEA; HOFERI; POPULATIONS; MORTALITY; DECLINE;
Keywords:
amphibian; anuran; eukaryotic protist; ichthyophonosis; pathology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Mikaelian, I IDEXX Vet Serv, 2825 Kovr Dr, W Sacramento, CA 95605 USA IDEXX Vet Serv 2825 Kovr Dr W Sacramento CA USA 95605 605 USA
Citazione:
I. Mikaelian et al., "Ichthyophonus-like infection in wild amphibians from Quebec, Canada", DIS AQU ORG, 40(3), 2000, pp. 195-201

Abstract

Myositis associated with infection by Ichthyophonus-like organisms was diagnosed in 35 of 260 (13%) wild amphibians collected in Quebec, Canada, from1959 to 1964 (n = 30), and 1992 to 1999 (n = 230). Infection was diagnosedin 17 green frogs Rana clamitans, 9 wood frogs R, sylvatica, 4 red-spottednewts Notophthalmus viridescens, 3 bullfrogs R. catesbeiana, 1 spring peeper Pseudacris crucifer, and 1 pickerel frog R. palustris. The spring peeperand one of the bullfrogs were collected in 1964 from the Mont Saint-Hilaire Biosphere Reserve, indicating long-term presence of the organism. Spores of the organisms invaded striated muscle fibers and were associated with variable degrees of granulomatous and eosinophilic inflammation. Infection was considered fatal in 2 green frogs, 1 wood frog, and 1 red-spotted newt. It was considered potentially significant in 3 additional green frogs in which up to 100% of the fibers of some muscles were replaced by spores associated with a severe granulomatous reaction. Ultrastructural features of Ichthyophonus-like spores included a thick trilaminated wall, a paramural cytoplasm, multiple nuclei, oval mitochondria with short tubulo-vesicular cristaeand numerous ribosomes. This report represents 4 new host records and shows that ichthyophonosis is enzootic in amphibians from Quebec.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 04:38:55