|Scientific Name:||Hyperolius pickersgilli|
|Species Authority:||Raw, 1982|
|Red List Category & Criteria:||Critically Endangered B2ab(ii,iii) ver 3.1|
|Assessor(s):||South African Frog Re-assessment Group (SA-FRoG), IUCN SSC Amphibian Specialist Group|
|Reviewer(s):||Angulo, A. & von May, R.|
|Contributor(s):||Channing, A., Turner, A.A., de Villiers, A., Harvey, J., Tarrant, J., Measey, J., Tolley, K., Minter, L., du Preez, L., Burger, M., Cunningham, M. & Davies, S.|
Listed as Critically Endangered in view of its small Area of Occupancy of 9 km2, with its distribution being severely fragmented, and a continuing decline in the quality of its habitat and Area of Occupancy.
|Previously published Red List assessments:||
|Range Description:||This species is endemic to the coast of KwaZulu-Natal Province, South Africa, ranging from Warner Beach in the south to St Lucia village in the north. It is found within 20 km of the coast up to 380 m asl. Although the Extent of Occurrence is 2,303 km2, the Area of Occupancy has been calculated to be only 9km2.|
Native:South Africa (KwaZulu-Natal)
|Estimated area of occupancy (AOO) - km2:||9|
|Continuing decline in area of occupancy (AOO):||Yes|
|Estimated extent of occurrence (EOO) - km2:||2303|
|Continuing decline in extent of occurrence (EOO):||No|
|Number of Locations:||10|
|Upper elevation limit (metres):||380|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The spatial distribution of this species is considered to be severely fragmented as >50% of individuals are in small and isolated patches and >50% of subpopulations are considered non-viable. It is secretive and so is under-recorded, but appears to be a rare species.|
|Current Population Trend:||Unknown|
|Habitat and Ecology:||It is a species of coastal mosaic bushland and grassland, breeding in stagnant, usually temporary to semi-permanent, water, rarely exceeding 50 cm in depth, surrounded by dense sedges. It is seldom found at the same breeding sites as the abundant Hyperolius marmoratus.|
|Continuing decline in area, extent and/or quality of habitat:||Yes|
|Use and Trade:||There are no reports of this species being utilized.|
|Major Threat(s):||It is confined to a small area subject to urbanization, habitat fragmentation, afforestation, and drainage for agricultural and urban development. Some breeding sites are being polluted by DDT, which is used for controlling malarial mosquitoes. The spread of alien vegetation, in particular eucalyptus, is responsible for the drying out of some breeding sites.|
|Conservation Actions:||Obtaining accurate information on threats was given the highest priority on conservation research for this species. Determining the status of all sites and estimating population size also receive high research priorities. Research is still required to determine population sizes, life history and ecology (in particular dispersal potential), followed by appropriate monitoring of both population and habitat. In addition, land owner agreements need to be drawn up for protection and management of all sites for conservation management. This species occurs in the iSimangaliso Wetland Park, the Umlalazi Nature Reserve, and the Twinstreams-Mtunzini Natural Heritage Site.|
Channing, A. 2001. Amphibians of Central and Southern Africa. Cornell University Press, Ithaca and London.
du Preez, L. and Carruthers, V. 2009. A complete guide to the frogs of southern Africa. Struik Nature, Cape Town.
IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: http://www.iucnredlist.org. (Accessed: 2 September 2010).
Lambiris, A.J.L. 1989. A review of the amphibians of Natal. Lammergeyer 39: 1-210.
Minter, L.R., Burger, M., Harrison, J.A., Braack, H.H., Bishop, P.J. and Knoepfer, D. 2004. Atlas and Red Data Book of the Frogs of South Africa, Lesotho and Swaziland. SI/MAB Series No. 9, Washington, D.C.
Passmore, N.I. and Carruthers, V.C. 1995. South African Frogs, 2nd Edition. Southern Book Publishers and Witwatersrand University Press, Johannesburg.
Poynton, J.C. and Broadley, D.G. 1987. Amphibia Zambesiaca. 3. Rhacophoridae and Hyperoliidae. Annals of the Natal Museum: 161-229.
Raw, L.R.G. 1982. A new species of reed frog (Amphibia: Hyperoliidae) from the coastal lowlands of Natal, South Africa. Durban Museum Novitates: 117-126.
Schiøtz, A. 1999. Treefrogs of Africa. Edition Chimaira, Frankfurt am Main.
|Citation:||South African Frog Re-assessment Group (SA-FRoG), IUCN SSC Amphibian Specialist Group. 2010. Hyperolius pickersgilli. The IUCN Red List of Threatened Species 2010: e.T10644A3207694. . Downloaded on 01 May 2016.|