|Scientific Name:||Bedotia geayi Pellegrin, 1907|
|Red List Category & Criteria:||Endangered B1ab(i,ii,iii,iv,v) ver 3.1|
|Assessor(s):||Ravelomanana, T., Sparks, J.S. & Loiselle, P.V.|
|Reviewer(s):||Randrianizahaisa, H., Rasoloariniaina, R & Velosoa, J.|
|Contributor(s):||Participants of the CBSG/ANGAP CAMP "Faune de Madagascar" workshop, Mantasoa, Madagascar 2001|
Known only from the Mananjary drainage. Its presence in rivers to the north remains a possibility but needs confirmation. In the adjacent Namorona drainage the species is replaced by Bedotia sp. Ranomafana. Habitat degradation and pressure from exotic predators (Gambusia holbrooki) and competitors (Xiphophorus spp.) have largely eliminated B. geayi from low altitude (< 100 m a.s.l) habitats, however, it remains abundant in the middle and upper reaches of the Mananjary. Pending major shifts in land use in the basin, this species is assessed as Endangered on the basis of its Extent of Occurrence being less than 5000 km², with a continuing decline in distribution due to the above mentioned pressures.
|Previously published Red List assessments:|
|Range Description:||Bedotia geyai is endemic to Madagascar. It is known from the Mananjary river (Loiselle and Rodriguez 2007).|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||This species was not difficult to find along the river followed by the national road N°25 near Kianjavato (Ravelomanana, pers obs).|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||Bedotia geayi inhabits small streams flowing under partial or complete forest cover (Loiselle and Rodriguez, 2007).|
|Continuing decline in area, extent and/or quality of habitat:||Yes|
|Movement patterns:||Not a Migrant|
|Use and Trade:||There is no use or trade information available for this species.|
|Major Threat(s):||This species has not been collected from low altitude habitats in the Mananjary basin for some time. This is may be due to the fact that the immediate hinterland of the town of Mananjary has undergone extensive anthropogenic modification. This process favours exotic species, which are better adapted to deal with increased silt loads and higher water temperatures that follow deforestation than are the majority of Madagascar’s native fishes (Loiselle and Rodriguez, 2007).|
|Conservation Actions:||Probably a part of the population is included in the protected area "Fandriana - Vondrozo corridor".|
Baillie, J. and Groombridge, B. (eds). 1996. 1996 IUCN Red List of Threatened Animals. pp. 378. International Union for Conservation of Nature, Gland, Switzerland and Cambridge, UK.
Groombridge, B. (ed.). 1994. 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.
IUCN. 2016. The IUCN Red List of Threatened Species. Version 2016-3. Available at: www.iucnredlist.org. (Accessed: 07 December 2016).
Loiselle, P.V. and Rodriguez, D. 2007. A new species of Bedotia (Teleostei: Atherinomorpha: Bedotiidae) from the Rianila drainage of eastern Madagascar, with redescriptions of Bedotia madagascariensis and Bedotia geayi. Zootaxa 1520: 1-18.
Loiselle, P.V. and Stiassny, M.L.J. 2003. Bedotia. In: S.M. Goodman and J.P. Benstead (eds), The Natural History of Madagascar, pp. 867-868. University of Chicago Press, Chicago.
Pellegrin, J. 1907. Liste des poissons recueillis à Madagascar par M.F. Geay. Description d’une espèce nouvelle. Bulletin du Muséum National d'Histoire Naturelle 30:201-206.
|Citation:||Ravelomanana, T., Sparks, J.S. & Loiselle, P.V. 2016. Bedotia geayi. The IUCN Red List of Threatened Species 2016: e.T2719A58293954.Downloaded on 23 September 2017.|