| Citation |
|
Description |
Geographic Range [top]
Range Description: This species occurs in the montane regions of northern Viet Nam (Lao Cai, Ha Giang, Son La, Hoa Binh, Thanh Hoa, Vinh Phuc, Bac Kan), as well as the adjacent Yunnan Mountains in China between 600–2,090 m Asl (Bain and Nguyen 2004, Nguyen et al. 2005). The type locality is Bac Kan, Viet Nam (Che et al. 2009). The species presence in Lao Peoples Democratic Republic, reported in Stuart (1999), is uncertain, as suggested by the genetic and taxonomic findings in Che et al. 2009. The species has an estimated extent of occurrence (EOO) of 61,011 km2.
Countries occurrence:
Native:
China; Viet Nam
Additional data:
? Continuing decline in extent of occurrence (EOO): Unknown ? Extreme fluctuations in extent of occurrence (EOO): Unknown
? Continuing decline in number of locations: Unknown
? Extreme fluctuations in the number of locations: Unknown ? Lower elevation limit (metres): 600
? Upper elevation limit (metres): 2090
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: The population size of this species is unknown but is suspected to be decreasing due to ongoing habitat loss and harvesting for food (Bain and Nguyen 2004). Frogs tentatively identified as this species were not uncommon at Tam Dao in 1999 (van Dijk unpubl. data), though they were not reported from there by Inger et al. (1999). Bain and Nguyen (2004) collected 3 and 12 specimens from Mount Muong Cha and Mount Tay Con Linh II respectively. The general absence of gene flow between different localities suggests species in the Quasipaa genus are likely poor overland dispersers (Che et al. 2009), but this species population is not considered to be severely fragmented.
Current Population Trend: Decreasing
Additional data:
? Population severely fragmented: No
Habitat and Ecology [top]
Habitat and Ecology: It is found in montane forests in slow and fast-flowing cascading streams, reported to be about 2–5 m in width, and in pools with sandy or rocky substrate (Ohler et al. 2000, Bain and Nguyen 2004), in which the species also breeds by larval development. Because of these specific requirements, suitable habitats tend to be fragmented by valleys (Che et al. 2009) and terraced agriculture (Bain and Nguyen 2004).
Systems: Terrestrial; Freshwater
Continuing decline in area, extent and/or quality of habitat: Yes
Movement patterns: Not a Migrant
Use and Trade [top]
Use and Trade: The species is collected by local people for food (Bain and Nguyen 2004).
Threats [top]
Major Threat(s): Threats to the species include harvesting for local consumption, forest degradation and stream pollution due to agricultural development (including smallholder farming and tree plantations), logging, and the impacts of increasing human settlements (Bain and Nguyen 2004).
Human population growth was reported to have increased harvesting pressure of this frog in the Tay Con Linh mountains and Fansipan Mountain of northern Viet Nam (Bain and Nguyen 2004, T.Q. Nguyen pers. comm. 2015). More broadly, anecdotal evidence suggests that species in the family Dicroglossidae are heavily targeted and thus may be experiencing population declines throughout the region (Rowley et al. 2010). Notably, large-sized individuals in the Quasipaa genus are now absent at many historical sampling sites (Rowley et al. 2010). A recent local assessment of this frog revealed that the major threats to the species, harvesting and habitat loss, are likely reversible at present (Amphibian Ark 2012).
Conservation Actions [top]
Conservation Actions: Conservation Actions
Currently, the species is listed as endangered in the 2007 Viet Nam Red Data Book (Tran et al. 2007).
Conservation Needed
Preserving and restoring the ecological integrity of the northern Vietnamese hill forests and streams would benefit the species. The creation of corridors between montane forests has also been proposed as a conservation approach to sustain a contiguous habitat for the species (Bain and Nguyen 2004).
Research Needed
The specific habitat requirements and general absence of gene flow across fragmented localities of related species suggest that this frog may be susceptible to local extinctions (Che et al. 2009). However, present uncertainty in the genetic/taxonomic understanding (Che et al. 2009) precludes more accurate assessments on the species’ conservation status. Clarification of the true distribution of the species, along with an assessment of threats, particularly harvesting for food, is required.
Citation: IUCN SSC Amphibian Specialist Group. 2017. Quasipaa delacouri. The IUCN Red List of Threatened Species 2017: e.T58243A63899770. http://dx.doi.org/10.2305/IUCN.UK.2017-2.RLTS.T58243A63899770.en. Downloaded on 07 November 2018.
Disclaimer: To make use of this information, please check the .
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided
|
