Variabilidad morfológica en tres cepas de Sarcoptes scabiei (Acaridida: Sarcoptidae) de Costa Rica
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Date
Authors
Calderón Arguedas, Ólger
Sánchez, Claudio
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Volume Title
Publisher
Universidad de Costa Rica
Abstract
Description
La presencia de área desnuda dorsal y escamas ventrolaterales de hembras de Sarcoptes scabiei (Linnaeus) fue estudiada en ejemplares procedentes de tres tipos de infestación: una escabiosis noruega (cepa W.S S.l), un brote epidémico de escabiosis clásica (cepa HSC) y una escabiosis porcina (cepa P). La frecuencia de aparición de área desnuda dorsal entre las cepas W.S S.! y HSC no mostró diferencias significativas; aunque sí las hubo entre éstas y la cepa P. La aparición de escamas ventrolaterales fue evidenciada únicamente en una hembra de la cepa W.S S.l. La variabilidad morfológica entre las cepas supone gran dificultad para poder establecer relaciones tipo morfología parasitaria- hospedero- cuadro clínico.
The occurrence of dorsal bare area and ventro-lateral scales was studied in Sarcoptes scabiei (Linnaeus) females from three types of infestation: Norwegian Scabies (W. S S.I strain), an epidemic outbreak of classical scabies (HSC strain) and swine scabies (P strain). The presence of dorsal bare area did not differ between W, S S.l and HSC strains, but there was a difference between the human strains and P strain. Ventro-Iateral scales were not seen in P strain, but it was possible to identify them in one W. S S. 1 strain female. T he variability among strains difficults the identification of parasite morphology-host-clinical relationships.
The occurrence of dorsal bare area and ventro-lateral scales was studied in Sarcoptes scabiei (Linnaeus) females from three types of infestation: Norwegian Scabies (W. S S.I strain), an epidemic outbreak of classical scabies (HSC strain) and swine scabies (P strain). The presence of dorsal bare area did not differ between W, S S.l and HSC strains, but there was a difference between the human strains and P strain. Ventro-Iateral scales were not seen in P strain, but it was possible to identify them in one W. S S. 1 strain female. T he variability among strains difficults the identification of parasite morphology-host-clinical relationships.
Keywords
sarcoptes scabiei, norwegian scabies, morphologic variability, Costa Rica