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Leptolalax sungi 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Megophryidae

Scientific Name: Leptolalax sungi Lathrop, Murphy, Orlov & Ho, 1998
Taxonomic Source(s): Frost, D.R. 2015. Amphibian Species of the World: an Online Reference. Version 6.0. New York, USA. Available at: http://research.amnh.org/herpetology/amphibia/index.html.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2017
Date Assessed: 2015-10-08
Assessor(s): IUCN SSC Amphibian Specialist Group
Reviewer(s): Luedtke, J.
Contributor(s): Rowley, J.L. & Nguyen, T.Q.
Facilitator/Compiler(s): Rowley, J.L. & Cutajar, T.
Justification:
Listed as Least Concern as this species is relatively widespread, with an estimated extent of occurrence (EOO) of 98,393 km2.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is known from between 331–955 m Asl (Bain et al. 2007, J. Rowley unpubl. data) in Vinh Phuc (Lathrop et al. 1998, J. Rowley unpubl. data), Lao Cai (Bain et al. 2007), Tuyen Quang (J. Rowley unpubl. data), and Yen Bai Provinces (Nguyen et al. 2005), northern Viet Nam as well as Guangxi Province, southern China (Fei et al. 2009, Fei et al. 2012: both as Paramegophrys sangi). These are unlikely to represent the actual limits of the species' range as areas with similar habitat and elevations to those in its known localities extend across most of northern Viet Nam (except west near Lao PDR), as well as into southern Yunnan Province, China. Further surveys in these areas may uncover its presence there, therefore its range has been projected beyond known sites to include these areas of suitable habitat. The species' estimated EOO is 98,393 km2.
Countries occurrence:
Native:
China; Viet Nam
Additional data:
Number of Locations:21
Lower elevation limit (metres):331
Upper elevation limit (metres):955
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There are no estimates of population size for this species, but it was collected in Vinh Phuc between 1996–1997 prior to its description (Lathrop et al. 1998). In 2004 it was collected again in Lao Cai Province (Bain et al. 2007), and observed in 2012 and 2013 in Vinh Phuc and Tuyen Quang Provinces, respectively, in very high abundance (J. Rowley unplubl. data). There are no records pertaining to the species' abundance in its other known localities. Due to ongoing habitat degradation from expanding agriculture and human settlement (see Threats), the species' population is expected to be declining.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species occurs in evergreen forest and is associated with sloping, rocky streams (Lathrop et al. 1998, Bain et al. 2007, J. Rowley unpubl. data). It is active during rainy nights (Lathrop et al. 1998). Reproduction occurs in May-August, when males have been observed calling from around the banks of streams (Lathrop et al. 1998, J. Rowley unpubl. data). Little is known about this species' natural history, but it presumably deposits eggs in the streams and has a free-living larval stage, as do other Leptolalax for which the reproductive strategy is known. There is a continuing decline in the quality and extent of this species habitat in parts of its range due to expanding agriculture and human settlement (Lathrop et al. 1998, Ohler and Bain 2004, J. Rowley unpubl. data) (see Threats).
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: There are no records of this species being utilized.

Threats [top]

Major Threat(s): Habitat loss and degradation, particularly as a result of the conversion of forest to agricultural land has been identified as a significant threat to biodiversity throughout Southeast Asia (Sodhi et al. 2009). Recent satellite imagery shows areas of cleared land scattered throughout the lower reaches of this species' known and inferred range. The species' type locality consists of disturbed habitat surrounded by a plantation of Sechium edule (comestible gourd), (J. Rowley unpubl. data), and is adjacent to the township of Vinh Phuc (Lathrop et al. 1998) – a growing tourist destination (Ohler and Bain 2004). Thus, in addition to habitat loss for agriculture, the species also likely faces threats associated with local human density including residential development, transportation, and pollution of wetlands.

Conservation Actions [top]

Conservation Actions: Conservation Actions
In Viet Nam this species is known from Tam Dao National Park (Lathrop et al. 1998, J. Rowley unpubl. data) and Na Hang Nature Reserve (T. Nguyen pers. comm. November 2015), and its locality in Guangxi, China is in or very near to Shiwandashanshuiyuanlian Nature Reserve (Fei et al. 2009, Fei et al. 2012: both as Paramegophrys sangi). The species' predicted range also occupies parts of more than 20 other protected areas in Viet Nam and China.

Research Needed
Addressing the lack of data is the first step towards ensuring this species' long-term persistence; further research on its range, life history, threats, and the size and trends of its population would inform conservation decisions. It is also important to determine the level of protection offered to the species in the protected areas from which it is known.

Citation: IUCN SSC Amphibian Specialist Group. 2017. Leptolalax sungi. The IUCN Red List of Threatened Species 2017: e.T57575A47153198. . Downloaded on 23 September 2017.
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