This species is known from Cerro Azul, Macuro, and Cerro El Humo, 10km north of Macuro, in Península de Paria, Sucre State, Venezuela. It has been recorded from 400-1,000m asl.
Habitat and Ecology
It lives along streams in lowland humid forest up to cloud forest habitat. A clutch of eggs is deposited in the leaf-litter of the forest floor, and then after hatching the larvae are carried to water where they develop further.
The population status of this species is not known, although specimens were collected in Parque Nacional Peninsula de Paria as recently as May 2004.
The major threat is habitat loss due to selective logging and small-scale agriculture. Chytridiomycosis represents a potential future threat.
Although most of the range of this species is within a protected area (Parque Nacional Peninsula de Paria), this reserve is under pressure of deforestation (by the local people). Strengthened management and protection of this site is necessary to safeguard this species.
Red List Status
Listed as Endangered because its Extent of Occurrence is less than 5,000 km2, all individuals are in fewer than five locations, and there is continuing decline in the extent and quality of its habitat on the Peninsula de Paria, Venezuela.
Enrique La Marca, Jesús Manzanilla 2004. Mannophryne riveroi. The IUCN Red List of Threatened Species 2004: e.T55250A11280758. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T55250A11280758.en .Downloaded on 18 January 2019