Evaluation in white mice of the infectivity of egs of Lagochilascaris minor (Nematoda: ascarididae), incubated by decortication with sodium hypochlorite (NaOCl)

Evaluación en ratones albinos de la infectividad de huevos de Lagochilascaris minor (Nematoma: ascarididae), incubados con substancias preservadoras de uso frecuente. Incremento por el descortezamiento con Hipoclorito de Sodio

White mice were used to study the infectivity of the eggs of Lagochilascaris minor Leiper, 1909 after incubation in liquid media, with or without preservative substances. Potassium bichromate (K2Cr2O7) at 1% restrict hatching, while 1% formalin gave a greater larval yield. Incubation of eggs in distilled water, in Roux or Falcon flasks gave a good yield, whether the eggs were obtained from human feces or from experimentally infected cats. Treatment of eggs with Sodium hypochlorite (NaOCl) at 5.25% for 2 min prior to inoculation, produced a notable increment of the larval yield in the infections.

Lagochilascaris minor; Infectivity of eggs; Modifying substances; Models for evaluation