Globally Threatened Amphibian Species Part 1

216
Threatened Amphibians of the World
VU Cochranella riveroi (Ayarzaguena, 1992)
Vulnerable D2
Order, Family: Anura, Centrolenidae
Country Distribution: Venezuela
Current Population Trend: Stable
Geographic Range This species is endemic to Cerro Aracamuni, in
Amazonas State, Venezuela, at an elevation of 1,600m asl.
Population It is a rare species.
Habitat and Ecology It lives and reproduces (by larval development)
within terrestrial bromeliads in montane forest.
Major Threats There are no current major threats, but the restricted
range of this species makes it vulnerable to threatening
processes.
Conservation Measures The population occurs in a Natural Monument
within the Parque Nacional Serrania de la Neblina. There is a
need for close population monitoring of this species given that it is
known only from a single location.
Bibliography: Ayarzaguena, J. (1992), Barrio Amorós, C.L. (2004), Barrio, C.
(1998), Duellman, W.E. (1993), Duellman, W.E. (1999), Gorzula, S. and Señaris,
J.C. (1998), La Marca, E. (1997), Lynch, J.D. and Ruiz-Carranza, P.M. (1996a),
Myers, C.W. and Donnelly, M.A. (1997)
Data Providers: Enrique La Marca, Celsa Señaris
VU Cochranella rosada Ruíz-Carranza and Lynch, 1997
Vulnerable B1ab(iii)
Order, Family: Anura, Centrolenidae
Country Distribution: Colombia
Current Population Trend: Decreasing
© Fundación ProAves / www.proaves.org
Geographic Range This species is known from Tolima (Falan near Mariqutia), Antioquia (Anori), and Caldas Departments,
between 1,100 and 2,000m asl, in Colombia. It is believed to occur more widely.
Population It is a common species in Tolima, but is thought to be uncommon in Antioquia.
Habitat and Ecology It occurs in sub-Andean forests on vegetation alongside streams. Eggs are laid on leaves
over-hanging water and when they hatch the tadpoles drop into the water below where they develop further. They
require gallery forest to lay their eggs and hence are sensitive to any habitat disturbance.
Major Threats The major threats are habitat fragmentation and loss, due to agricultural expansion (including planting
of illegal crops) and timber extraction, and water pollution.
Conservation Measures The range of the species does not include any protected areas, and there is a need for
improved habitat protection at the sites where it is known to occur.
Bibliography: Acosta-Galvis, A.R. (2000), Ruiz-Carranza, P.M. and Lynch, J.D. (1997)
Data Providers: Alonso Quevedo Gil, John Lynch
VU Cochranella ruizi Lynch, 1993
Vulnerable B1ab(iii)
Order, Family: Anura, Centrolenidae
Country Distribution: Colombia
Current Population Trend: Decreasing
© Martha Silva-Velasco
Geographic Range This species is known from both slopes of the western Andes, between Cauca and Risaralda
Departments, and on the western slope of the central Andes, in Colombia, between 2,100 and 2,470m asl.
Population It is not a particularly common species.
Habitat and Ecology It occurs on vegetation next to streams in sub-Andean forests. It lays its eggs on leaves above
the water and when hatched the tadpoles drop into the stream below where they develop further. It is restricted to
gallery forest due to its requirement for overhanging branches for breeding habitat.
Major Threats The major threats are habitat loss, due to agricultural development (including the planting of illegal
crops), logging, and human settlement, and pollution resulting from the spraying of illegal crops.
Conservation Measures The range of the species includes a few protected areas, such as the Parque Nacional
Natural Tatamá.
Bibliography: Lynch, J.D. (1993a), Ruiz-Carranza, P.M., Ardila-Robayo, M.C. and Lynch, J.D. (1996)
Data Providers: Fernando Castro, John Lynch, Erik Wild
VU Cochranella savagei Ruíz-Carranza and Lynch, 1991
Vulnerable B1ab(iii)
Order, Family: Anura, Centrolenidae
Country Distribution: Colombia
Current Population Trend: Decreasing
© Paul D. A. Gutiérrez-C, courtesy of Museo de
Herpetología Universidad de Antioquia
Geographic Range This species occurs on the western slope of the Cordillera Central in the departments of Quindio
and Risaralda, on the eastern slope of the Cordillera Central in the department of Caldas, and on the western
slope of the Cordillera Occidental, in the department of Valle del Cauca, in Colombia. It has been recorded from
1,400-2,410m asl.
Population It is a common species.
Habitat and Ecology It occurs in sub-Andean forests on vegetation next to running water such as streams. The
eggs are laid on leaves, and when hatched the tadpoles fall into the water below where they develop further. It is
also recorded from secondary forests.
Major Threats The major threat is forest loss due to agriculture, both crops and livestock, and pollution (as a result
of the fumigation of crops).
Conservation Measures Its range includes the Reserva Regional Bosques de Florencia and the Parque Nacional
Natural Farallones de Cali.
Bibliography: Acosta-Galvis, A.R. (2000), Ruiz-Carranza, P.M. and Lynch, J.D. (1991b), Ruiz-Carranza, P.M. and Lynch, J.D. (1991c),
Ruiz-Carranza, P.M., Ardila-Robayo, M.C. and Lynch, J.D. (1996)
Data Providers: Wilmar Bolívar, Martha Patricia Ramírez Pinilla, Mariela Osorno-Muñoz, Jose Vicente Rueda, Adolfo Amézquita,
María Cristina Ardila-Robayo