Anfibios del Valle de Zongo (La Paz, Bolivia): I. Evaluación del estado de conservación
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Ecología en Bolivia
Abstract
En el presente estudio se evaluó el estado de conservación de los anfibios del valle de Zongo (La Paz, Bolivia), priorizando la búsqueda de cinco especies actualmente amenazadas (Oreobates zongoensis, Psychrophrynella chacaltaya, Telmatobius bolivianus, T. marmoratus, T. verrucosus). No se encontró Oreobates zongoensis ni Telmatobius verrucosus y, como se esperaba, se registró T. bolivianus. Se registraron individuos muertos de Hyloscirtus cf. armatus, Pleurodema marmoratum y Telmatobius marmoratus. El análisis del estado de conservación indica que casi el 50% de las especies está amenazado (categorías EN, CR, VU de la IUCN). El escaso registro de anfibios puede deberse a diferentes factores, principalmente antrópicos, que actúan a varios niveles y que sumados pueden ser causantes de esta ausencia o descenso en el número de individuos.
This is a cross sectional study. The objective was to evaluate the conservation status of amphibian species in the valley of Zongo. Five species currently in danger of extinction were searched: Oreobates zongoensis, Psychrophrynella chacaltaya, Telmatobius bolivianus, T. marmoratus and T. verrucosus. Oreobates zongoensis and Telmatobius verrucosus were not found. As expected, Telmatobius bolivianus was recorded. Dead individuals of Hyloscirtus cf. armatus, Pleurodema marmoratum and Telmatobius marmoratus were also found. The conservation status analysis showed almost 50% of species in danger of extinction (IUCN categories: EN, CR and VU). The apparent paucity of amphibians in Zongo could be due to several factors, mainly anthropic, acting at several levels; the addition of their effects could cause such a reduction or even absence of individuals.
This is a cross sectional study. The objective was to evaluate the conservation status of amphibian species in the valley of Zongo. Five species currently in danger of extinction were searched: Oreobates zongoensis, Psychrophrynella chacaltaya, Telmatobius bolivianus, T. marmoratus and T. verrucosus. Oreobates zongoensis and Telmatobius verrucosus were not found. As expected, Telmatobius bolivianus was recorded. Dead individuals of Hyloscirtus cf. armatus, Pleurodema marmoratum and Telmatobius marmoratus were also found. The conservation status analysis showed almost 50% of species in danger of extinction (IUCN categories: EN, CR and VU). The apparent paucity of amphibians in Zongo could be due to several factors, mainly anthropic, acting at several levels; the addition of their effects could cause such a reduction or even absence of individuals.
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Vol. 44, No. 2