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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.18  supl.1 Curitiba July 2001 

Estructura comunitaria de helmintos de perros vagabundos de San Juan de Lurigancho, Lima, Perú


Community structure of helminths in stray dogs from San Juan de Lurigancho, Lima, Peru



José O. Iannacone; Karina M. Cordova; Roberto V. Wong

Laboratorio de Ecofisiología, área de Biodiversidad Animal, Universidad Nacional Federico Villarreal. Calle San Marcos 383 Pueblo Libre, Lima 21, Lima, Perú. E-mail:




Thirty stray dogs Canis familiaris Linnaeus, 1758 were collected in San Juan de Lurigancho, Lima, Peru, between January and March 1997 and necropsied for helminths. Three species were collected: the cestodes Dipylidium caninum (Linnaeus, 1758) Railliet, 1892 and Taenia pisiformis (Bloch, 1780) and the nematode Toxocara canis (Werner, 1782) Stiles, 1905. Fifty per cent of the examined dogs showed one or two parasites. A total of 303 (0-116) helminths were recovered and the intensity of infection was 30,3. The Simpson index (C) for all parasite species was 0,414, indicating a dominance by one species in the parasite community. The mean diversity in the infracommunities of C. familiaris was H' = 0,038 and uniformity index of Pielou J = 0,207. Dipylidium caninum, T. pisiformis, and T. canis presented a prevalence of infection of 33,30%, 10% and 16,6% respectively. Dipylidium caninum presented the highest frequency and mean intensity of infection. Dipylidium caninum was the helminth with the highest dominance (94%) whereas the lowest was due to T. pisiformis (4%) and T. canis (2%). Helminths were not related to the age of the hosts, prevalence and mean intensity of infection. Out of the 10 equally divided segments of the intestinal gut, D. caninum was found from the 6th to the 9th segment. T canis preferred almost exclusively the 1st segment while T. pisiformis was randomly distributed.

Key words: Canis familiaris, Dipylidium caninum, Toxocara canis, Taenia pisiformis, perros, Peru



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AGRADECIMIENTOS. a Eduardo Esqueche M., Jefe de la Unidad de Cirugía Experimental del Instituto de Salud del Niño por el apoyo y asesoría en dicha unidad. A Juan Monteverde M., Jefe del Centro de Salud del Rímac, a cargo del área de Salud ambiental del Cono Este, quien nos facilitó la adquisición y transporte de los perros. a Henry Hernández I., de la Unidad de Cirugía Experimental del Instituto de Salud del Niño, por su apoyo profesional. A los laboratorios de la Universidad Nacional Federico Villarreal por el apoyo en la presente investigación.



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Recebido em 18.V.2000; aceito em 29.VI.2001.

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