Relación hospedador - parásito entre tres cepas de Schistosoma mansoni y seis cepas de Biomphalaria glabrata de áreas endémicas y no endémicas venezolanas

• Liboria Matinella ^[1] ; Luz Pino ^[2] ; Gustavo Morales ^[2]
  1. [1] Ministerio de Sanidad y Asistencia Social Dirección de Malariología y Saneamiento Ambiental División de Endemias Rurales
  2. [2] Fondo Nacional de Investigaciones Agropecuarias Centro Nacional de Investigaciones Agropecuarias Instituto de Investigaciones Veterinarias
• Localización: Boletín chileno de parasitología, ISSN-e 0717-6325, ISSN 0365-9402, Vol. 55, Nº. 1-2, 2000, págs. 59-65
• Idioma: español
• Títulos paralelos:
  • Host parasite relationship among three Schistosoma mansoni strains and six Biomphalaria glabrata strains from endemic and non endemic Venezuelan areas is studied
• Enlaces
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• Resumen

  • Six lots of 18 B. glabrata from: La Victoria, Turmero, Cagua in Aragua state; Caserío El 25 in Carabobo state, Chabasquén in Portuguesa state and Humocaro Bajo in Lara state, were experimentally infected with miracidia of SM, C5 and C6 strains of Schistosoma mansoni (18 snails/Schistosoma mansoni strain). The averages of the intramolluscal period (IMP) obtained for the S. mansoni strains were very similar and comprised between 35.4 and 36.1 days. No significative statistical differences in the IMP were found according to the S. mansoni strain and the size of snails: < 7 mm and 7 mm. However, significative statistical differences in the IMP were found, in relation to the B. glabrata strain and between the snails classifiel in two groups according to the S. mansoni dose (5 miracidia/snail and 10 miracidia/snail). The higher percentages of infection (PI) were found for the following parasite-snail combinations: C6-Cas. El 25 (80.7%), SM-La Victoria (73.1%) and C5-Cagua (62%). No significative statistical differences were found for the PI a) between the snail classifiel in two groups according to the size (<7 mm and 7 mm), b) in relation to the miracidium dosification (5 and 10 miracidia/ snail and c) in accord to the S. mansoni strain. However, significative statistical differences were found for the PI obtained with different strains of the snail.