Occurs in eastern Madagascar where it is known from the following localities in Ranomafana National Park and immediate surrounding area: Andrahoroa river, near Ambatolahy, Sakaroa, and Kidonavo, where specimens were found at an altitude of approximately 900-1200 m (Vences et al. 2012). The species is mapped to the boundaries of the Park and is thus thought to occur in two threat-defined locations: one in the Park and one outside. However, the true extent of the species' distribution is unknown and threats do occur in Ranomafana National Park but are sporadic, suggesting there may be additional locations, but no more than five due to the suspected small range of the species.
Habitat and Ecology
Boophis narinsi is a treefrog that inhabits bushes and vegetation found along slow-moving, sandy bottomed streams in rainforest. It perches at a height of 1 to 3 meters above the stream, and occasionally has been found 5 to 10 meters from the stream on bushes in swampy areas (Vences et al. 2012). Similar to its congeners, it probably uses these streams to breed and for tadpole development.
Possibly microendemic to Ranomafana National Park and immediate vicinity. Due to ongoing habitat loss, its population is suspected to be decreasing.
There is ongoing decline in the extent and quality of its forest habitat due to subsistence agriculture, timber extraction, charcoal manufacturing, invasive spread of eucalyptus, livestock grazing, regular burning to maintain cattle pasture, expanding human settlements, and increases in artisanal mining.
The only known population of this species occurs within Ranomafana National Park, which is presently well-managed but is potentially at risk if political instability weakens enforcement (M. Vences pers. comm. December 2010).
In order to ensure the persistence of this species, current management practices within Ranomafana should be maintained (M. Vences pers. comm. December 2010).
Further research is required to better understand the species' population size, distribution and trends.
Red List Status
Listed as Endangered because its extent of occurrence (EOO) is limited to 685 km2, all individuals are known from two threat-defined locations, and there is ongoing decline in the quality and extent of its habitat, despite there being some level of habitat protection within the boundaries of Ranomafana National Park in eastern Madagascar.
The sister species of Boophis majori according to the original publication (Frost 2013).
IUCN SSC Amphibian Specialist Group 2015. Boophis narinsi. The IUCN Red List of Threatened Species 2015: e.T49542051A49542100. http://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T49542051A49542100.en .Downloaded on 16 December 2018