Bolitoglossa silverstonei
| Kingdom |
Phylum |
Class |
Order |
Family |
| ANIMALIA |
CHORDATA |
AMPHIBIA |
CAUDATA |
PLETHODONTIDAE |
| Scientific Name: |
Bolitoglossa silverstonei |
| Species Authority: |
Brame and Wake, 1972 |
Assessment Information
[top]
| Red List Category & Criteria: |
Vulnerable
B1ab(iii)
ver 3.1
|
| Year Published: |
2004 |
| Assessor/s: |
Fernando Castro, Wilmar Bolívar |
| Reviewer/s: |
Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young) |
Justification:
Listed as Vulnerable because its Extent of Occurrence is less than 20,000 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat.
|
Geographic Range
[top]
| Range Description: |
This species from north-western Colombia is known from the Pacific lowlands in the departments of Chocó and Valle del Cauca, and from a single locality in the department of Cordoba. Its altitudinal range is 20-400m asl. It probably occurs more widely between the confirmed localities.
|
| Countries: |
|
| Range Map: |
Click here to open the map viewer and explore range.
|
Population
[top]
| Population: |
It appears to be a rare species.
|
| Population Trend: |
Decreasing
|
Habitat and Ecology
[top]
| Habitat and Ecology: |
It occurs in very humid tropical forest, and can be found on low herbaceous vegetation, fallen leaves and epiphytes. It is not known whether or not it can adapt to secondary habitats. It is presumed to breed by direct development.
|
| Systems: |
Terrestrial |
| Major Threat(s): |
The major threats are habitat loss due to agricultural development (including planting of illegal crops), logging, and human settlement, and pollution resulting from the spraying of illegal crops.
|
Conservation Actions
[top]
| Conservation Actions: |
The record from the department of Cordoba is in the Parque Nacional Natural Paramillo. Improved habitat protection at sites at which the species is known to occur is necessary.
|
Bibliography
[top]
|
Acosta-Galvis, A.R. 2000. Ranas, Salamandras y Caecilias (Tetrapoda: Amphibia) de Colombia. Biota Colombiana: 289-319.
Brame, A.H. and Wake, D.B. 1972. New species of salamanders (genus Bolitoglossa) from Colombia, Ecuador and Panama. Natural History Museum of Los Angeles County - Contributions in Science: 1-34.
IUCN. 2004. 2004 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 23 November 2004.
Ruiz-Carranza, P.M., Ardila-Robayo, M.C. and Lynch, J.D. 1996. Lista actualizada de la fauna de Amphibia de Colombia. Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: 365-415.
|
