AMPHIBIAWEB
Argenteohyla siemersi
family: Hylidae
subfamily: Hylinae

© 2006 Víctor Hugo Zaracho (1 of 3)
Conservation Status (definitions)
IUCN (Red List) Status Endangered (EN)
CITES
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Argentina, Paraguay, Uruguay

 

View distribution map using BerkeleyMapper.

   

From the IUCN Red List Species Account:

 

Range Description

This species occurs in Argentina in north-west Corrientes Province (A. s. pederseni) and Entre Rios and Buenos Aires Provinces (A. s. siemersi). In Uruguay, it occurs in two localities in San Jose and Rocha states (A. s. siemersi). It occurs at elevations of 0-70m asl.

Habitat and Ecology

A. s. pederseni occurs in leaf axils of terrestrial Aechmae bromeliads in gallery forests along main river systems. It reproduces in temporary pools close to the bromeliads. The nominal subspecies occurs and reproduces in wetlands and river deltas (Río Paraná), and tolerates moderate habitat disturbance.

Population

The nominal subspecies was known to be uncommon, and the last record is from 1982. All populations have disappeared from Argentina and Uruguay, the reason for which is not well understood. However, in 1983, the Paraná had the largest flood of the century and the population here subsequently disappeared and has not been found since, despite many attempts to relocate it. The subspecies A. s. pederseni is rare but was recorded in 2002 and 2003, and this population at least appears to be stable.

Population Trend

Decreasing

Major Threats

The main threat to this species is habitat destruction caused by fires used to expand or maintain pastures and pine forestry plantations. Some populations are also likely to be threatened by the "Hidrovía Paraná-Paraguay" project (the transformation of the Paraguay-Paraná-Uruguay-La Plata river system into a 3,400-km long shipping canal). In Uruguay, this species is threatened by draining of wetlands for agricultural expansion.

Conservation Actions

Some populations of A. s. pederseni occur in the 17,600-ha Parque Nacional Mburucuya. The existing protected areas network requires expansion to ensure the protection of lowland riverine and wetland habitats. Further survey work is necessary to determine the status of populations of the nominate subspecies.

Taxonomic Notes

There are two subspecies: Argenteohyla siemersi siemersi and A. s. pederseni.

Citation

Esteban Lavilla, Jorge Céspedez, Diego Baldo, Boris Blotto, Jose Langone 2004. Argenteohyla siemersi. In: IUCN 2014

 

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