|Scientific Name:||Trichobatrachus robustus Boulenger, 1900|
|Taxonomic Source(s):||Frost, D.R. 2016. Amphibian Species of the World: an Online Reference. Version 6.0 (31 March 2016). New York, USA. Available at: http://research.amnh.org/herpetology/amphibia/index.html.|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Assessor(s):||IUCN SSC Amphibian Specialist Group|
|Contributor(s):||Amiet, J.-L., Hirschfeld, M., Burger, M., Rödel , M.-O. & Gvozdik, V.|
|Facilitator/Compiler(s):||Tarrant, J., Hobin, L.|
Listed as Least Concern in view of its wide distribution and its presumed large population.
|Previously published Red List assessments:|
|Range Description:||This species is known from lowlands of the Osamba Hills in eastern Nigeria to the Mayombe Hills in extreme western Democratic Republic of Congo, with records from Nigeria, Cameroon, Equatorial Guinea, Gabon and the Democratic Republic of Congo. It has also recently been recorded from the Serra do Pingano region of Angola (Ernst et al. 2014), which is the first country record for it. Its elevational range is between 26–1,458 m Asl (Ernst et al. 2014, M. Hirschfeld pers. comm. July 2016). It is presumed to occur in Congo and in the Cabinda Enclave of Angola.|
Native:Angola (Angola); Cameroon; Congo, The Democratic Republic of the; Equatorial Guinea; Gabon; Nigeria
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||It is rare around Yaounde, but much more common in the west of its range in Cameroon. Due to its' use as a subsistence species and declines in water quality in some parts of its' range, the population is suspected to be locally decreasing.|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||It lives in fast-flowing rivers in lowland and mid-altitude rainforest, and in secondary forest and agricultural habitats, including tea plantations. The tadpoles live in fast, even torrential, water and at the foot of small waterfalls.|
|Continuing decline in area, extent and/or quality of habitat:||Yes|
|Movement patterns:||Not a Migrant|
|Use and Trade:||This species is utilized locally for human consumption. In Rumpi Hills in Cameroon, the tadpoles rather than the adults are eaten. Dried individuals of this species are also often prepared as a special treat for children returning from schools for the Christmas holiday. Cameroonian traders collect this species for international trade to the USA and Japan (M.-O. Rödel pers. comm. July 2016).|
This species is presumably decreasing because of declining water quality and, although adaptable to some degradation as it has been recorded in agricultural habitats, it will not tolerate the complete opening up of its habitat caused by loss and degradation from further agricultural activities, expanding human settlements and logging. It is subject to intense hunting pressure for food and international trade, and is often rare in the areas around villages. In the Rumpi Hills in Cameroon, local people also eat the tadpoles.
A retrospective study analysing amphibian population declines (between 2004–2012) confirms the emergence of Bd in 2008 on Mount Oku and in 2011 on Mount Manengouba, suggesting that chytridiomycosis has driven community level declines of anuran biodiversity in this hotspot area (Hirschfeld et al. 2016). This species tested positive for Bd (Hirschfeld et al. 2016), and chytridiomycosis could be a threat. Stresses such as habitat loss are suspected to make amphibian species more susceptible to declines caused by chytridiomycosis, so this species is considered to be at risk of declines caused by infection (M.-O. Rödel pers. comm. July 2016). Individuals of this species in Gabon (Bell et al. 2011) have tested negative for Bd.
This species occurs in several protected areas including Monts de Cristal and Moukalaba-Doudou National Parks in Gabon (Burger et al. 2006, Pauwels and Rödel 2007).
Bd mitigation strategies, as well as increased habitat protection, is required to sustain diverse amphibian communities in areas such as Mount Manengouba, which contains nearly half of Cameroon’s amphibian diversity (Hirschfeld et al. 2016).
Amiet, J.-L. 1989. Quelques aspects de la biologie des Amphibiens Anoures du Cameroun. Année Biologique 28(2): 73-136.
Amiet, J.-L. 1991. Images d'Amphibiens camerounais. III. Le comportement de garde des oeufs. Alytes 9(1): 15-22.
Amiet, J.-L. and Perret, J.-L. 1969. Contributions a la faune de la region de Yaounde (Cameroun). II - Amphibiens Anoures. Annales de la Faculté des Sciences du Cameroun 3: 117-137.
Bell, R.C., Garcia, A.V.G., Stuart, B.L. and Zamudio, K.R. 2011. High Prevalence of the Amphibian Chytrid Pathogen in Gabon. EcoHealth 8(1): 116-120.
Burger, M., Branch, W.R. and Channing, A. 2004. Amphibians and reptiles of Monts Doudou, Gabon: species turnover along an elevational gradient. California Academy of Sciences Memoir 28: 145-186.
Burger, M., Pauwels, O.S.G., Branch, W.R., Tobi, E., Yoga, J.A. and Mikolo, E.-N. 2006. An Assessment of the Amphibian Fauna of the Gamba Complex of Protected Areas, Gabon. Bulletin of the Biological Society of Washington. 12: 297-307.
De la Riva, I. 1994. Anfibios anuros del Parque Nacional de Monte Alen, Rio Muni, Guinea Ecuatorial. Revista Espanola de Herpetologia 82: 123-139.
Ernst, R., Nienguesso, A.B.T., Lautenschläger, T., Barej, M.F., Schmitz, A. and Hölting, M. 2014. Relicts of a forested past: southernmost distribution of the hairy frog genus Trichobatrachus Boulenger, 1900 (Anura: Arthroleptidae) in the Serra do Pingano region of Angola with comments on its taxonomic status. Zootaxa 3779: 297-300.
Frétey, T. and Blanc, C.P. 2000. Liste des Amphibiens d'Afrique Centrale. ADIE, Libreville, Gabon.
Herrmann, H.-W., Böhme, W., Herrmann, P.A., Plath, M., Schmitz, A. and Solbach, M. 2005. African Biodiversity Hotspots: the amphibians of Mt. Nlonako, Cameroon. Salamandra 41(1/2): 61-81.
Hirschfeld, M., Blackburn, D.C., Doherty-Bone, T.M., Gonwouo, L.N., Ghose, S. and Rödel, M.-O. 2016. Dramatic Declines of Montane Frogs in a Central African Biodiversity Hotspot. PLoS ONE 11(5).
IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-2. Available at: www.iucnredlist.org. (Accessed: 14 September 2017).
Lasso, C.A., Rial, A.I., Castroviejo, J. and de la Riva, I. 2002. Herpetofauna del Parque Nacional de Monte Alen (Rio Muni, Guinea Ecuatorial). Graellsia 58: 21-34.
Lötters, S., Gossmann, V., Obame, F. and Böhme, W. 2001. Zur Herpetofauna Gabuns, Teil I: Einleitung, Untersuchungsgebiet und Methodik, kommentierte Artenliste der gefundenen Froschlurche. Herpetofauna 23(133): 19-34.
Pauwels, O.S.G. and Rödel, M.-O. 2007. Amphibians and National Parks in Gabon, western Central Africa. Herpetozoa 19(3/4): 135-148.
Perret, J.-L. 1966. Les Amphibiens du Cameroun. Zoologische Jahrbuecher fuer Systematik 8: 289-464.
Rödel, M.-O. and Pauwels, O.S.G. 2003. A new Leptodactylodon species from Gabon (Amphibia: Anura: Astylosternidae). Salamandra 39: 139-148.
|Citation:||IUCN SSC Amphibian Specialist Group. 2017. Trichobatrachus robustus. The IUCN Red List of Threatened Species 2017: e.T54443A18361006.Downloaded on 18 October 2017.|
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