Heterakis gallinarum check for this species in other resources - Heterakis isolonche check for this species in other resources - pheasants - Phasianus colchicus check for this species in other resources - Brazil"/>
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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 98, No. 8, 2003, pp. 1011-1016
Bioline Code: oc03197
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 98, No. 8, 2003, pp. 1011-1016

 en Nodular Typhlitis Associated with the Nematodes Heterakis gallinarum check for this species in other resources and Heterakis isolonche check for this species in other resources in Pheasants: Frequency and Pathology with Evidence of Neoplasia
Rodrigo Caldas Menezes; Rogério Tortelly; Delir Corrêa Gomes & Roberto Magalhães Pinto

Abstract

An investigation related to the frequency and pathology of Heterakis gallinarum check for this species in other resources and pathology of Heterakis isolonche check for this species in other resources in pheasants from Rio de Janeiro, Brazil was conducted by means of clinical examinations, necropsies, and histopathological analysis in 50 ring-necked pheasants from backyard flocks of 11 localities; also, histological sections of caeca of golden pheasants deposited in the Helminthological Collection of the Oswaldo Cruz Institute (CHIOC) have been considered in the present study. During necropsies, only specimens of H. gallinarum were recovered with a prevalence of 90%, mean intensity of 81.9 and range of infection of 1-413. Gross lesions were characterized by congestion, thickening, petechial haemorrhages of the mucosa, intussusception, and nodules in the cecal wall. Under microscopy, chronic difuse typhlitis, haemosiderosis, granulomas with necrotic center in the submucosa and leiomyomas in the submucosa, muscular and serosa associated with immature H. gallinarum worms were observed. The examination of histological sections previously deposited in the CHIOC, revealed more severe alterations associated with concomitant infections with H. gallinarum and H. isolonche in golden pheasants, and were characterized by several necrotic areas with cholesterol clefts in the submucosa, giant cell granulomas in the submucosa, and serosa centralized by necrosis and worm sections and neoplastic nodules in the muscular and submucosa.

Keywords
nodular typhlitis - Heterakis gallinarum check for this species in other resources - Heterakis isolonche check for this species in other resources - pheasants - Phasianus colchicus check for this species in other resources - Brazil

 
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