Registros parasitológicos en Rodent middens del Parque Nacional Perito Moreno, Santa Cruz, Argentina

Abstract

Se comunican los primeros hallazgos parasitológicos en rodent middens de Argentina. El depósito corresponde a Lagidium wolffsohni. Se procesaron fragmentos de un rodent middens obtenido del alero de una cueva en Santa Cruz, Argentina. La muestra fue rehidratada en una solución acuosa de fosfato trisódico y los restos parasitarios se concentraron por flotación y sedimentación espontánea. Se observaron treinta y cinco preparados transitorios bajo el microscopio óptico. Se registraron huevos de nematodes pertenecientes a ca- piláridos (Capillariidae), Trichuris sp. (Trichiuridae), Heteroxynema sp. (Oxiuridae) y un cestode (Anoplocepha- linae). Los huevos de capiláridos fueron similares a aquellos de Calodium hepaticum. Lagidium wolffsohni es un roedor endémico raro y resulta vital para su conservación conocer los factores que pueden vulnerar a sus poblaciones.

In this report, the results of the first parasitological examination in rodent middens from Argentina are communicated. The deposit belongs to Lagidium wolffsohni. Fragments of rodent middens obtained from a cave in the Santa Cruz Province, Argentina were processed. The sample was rehydrated in aqueous trisodium phosphate and parasitic remains concentrated by flotation and spontaneous sedimentation. Thirty five transitory slides were observed under a light microscope. Were recognized nematode eggs of Family Capillariidae, Trichuris sp. (Trichiuridae), a member of the Family Oxiuridae, Heteroxynema genus, and a Subfamily Anoplocephalinae cestode. Capilarid eggs were similar to those of Calodium hepaticum. Lagidium wolffsohni is a rare endemic rodent, therefore is vital for conservation know the factors that can affect their populations.