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Titolo:
HALICEPHALOBUS-GINGIVALIS (STEFANSKI, 1954) FROM A FATAL INFECTION INA HORSE IN ONTARIO, CANADA WITH COMMENTS ON THE VALIDITY OF HALICEPHALOBUS-DELETRIX AND A REVIEW OF THE GENUS
Autore:
ANDERSON RC; LINDER KE; PEREGRINE AS;
Indirizzi:
UNIV GUELPH,DEPT ZOOL GUELPH ON N1G 2W1 CANADA UNIV GUELPH,ONTARIO VET COLL,DEPT PATHOBIOL GUELPH ON N1G 2W1 CANADA
Titolo Testata:
Parasite
fascicolo: 3, volume: 5, anno: 1998,
pagine: 255 - 261
SICI:
1252-607X(1998)5:3<255:H(1FAF>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
SYN MICRONEMA DELETRIX; DIAGNOSIS;
Keywords:
HALICEPHALOBUS GINGIVALIS; MICRONEMA; NEMATODA; PANAGROLAIMIDAE; HORSE; TAXONOMY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
43
Recensione:
Indirizzi per estratti:
Citazione:
R.C. Anderson et al., "HALICEPHALOBUS-GINGIVALIS (STEFANSKI, 1954) FROM A FATAL INFECTION INA HORSE IN ONTARIO, CANADA WITH COMMENTS ON THE VALIDITY OF HALICEPHALOBUS-DELETRIX AND A REVIEW OF THE GENUS", Parasite, 5(3), 1998, pp. 255-261

Abstract

Halicephalobus gingivalis (Stefanski, 1954), from a fatal infection in a horse in Ontario, Canada, was cultured and restudied. Although theoriginal description given by Stefanski (1954) was satisfactory, Anderson & Bemrick (1965), in describing H. deletrix (= Micronemo deletrix), claimed Stefanski's description was ''inadequate'' and the species a ''species inquirenda''. Thus, infections in horses and humans have been assigned to H. deletrix. We believe the species reported in horsesand humans is H. gingivalis and that H. deletrix is its synonym. H. gingivalis is separated herein from forms found free-living. The genital tract in the advanced fourth siege of H. gingivalis is didelphic andamphidelphic and terminal ends of the horns ore reflected, the anterior one ventrally, the posterior one dorsally. In the adult porthenogenthe latter forms a short ovary, whereas most of the anterior horn forms a combined uterus-oviduct as a receptacle for a single targe egg which is laid in the 2-cell or multi-cell stage. Eggs in the 2-cell siege embryonated to larvae in 17 hours at 28 degrees C but did not hatch until on additional 24 hours. First-stage larvae were unusually large and variable in length (136-199 mu m x = 168). inactive third-siege larvae were 180-240 mu m (x = 203) in length. The possible route of infection in horses and humans is briefly discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 10:19:44