|Scientific Name:||Mantella manery Vences, Glaw & Böhme, 1999|
|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.|
|Red List Category & Criteria:||Vulnerable B1ab(iii) ver 3.1|
|Assessor(s):||IUCN SSC Amphibian Specialist Group|
|Contributor(s):||Raxworthy, C.J., Glaw, F., Scherz, M.D., Vences, M., Cox, N.A. & Rabibisoa, N.|
Listed as Vulnerable because while it remains poorly known, its extent of occurrence (EOO) is presumed to be 7,705 km2, it is known from two threat-defined locations, and there is believed to be a continuing decline in the extent and quality of its habitat in northern Madagascar.
|Previously published Red List assessments:|
|Range Description:||This species was previously only known from northwestern and northeastern Madagascar, with records from Marojejy at 300 m Asl and Est Betaidambo in the Analabe Rainforest along Ramena River (west of Tsaratanana Strict Nature Reserve) at 700 m Asl. It has now also been recorded further north from and around the village of Ankazafa, west of Dariana in northeast Madagascar (Edmonds 2009). The species could occur between known sites, but the EOO of its current mapped range is 7,705 km2, and the range is estimated to represent two threat-defined locations.|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||It was described in 1999, based on a single specimen in the collections of the Zoological Institute of the University of Antananarivo. The original description was based on a colour slide, but the holotype has since been found and redescriptions have been published (Vences et al. 2004). The paucity of records suggests that it is rare or cryptic. At the type locality, this species was reported in low densities but it was abundant during the survey at and near Ankazafa (Edmonds 2009). This species and Mantella ebenaui have also been found in very close proximity in Ankazafa and have potentially hybridized, although this needs to verified (Edmonds 2009). Due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||This is a species of low and mid altitude rainforest. It is terrestrial, and 4–5 individuals have been found in a stony brook. Large groups of males have been observed calling near the base of boulders in gallery forest, following a rainstorm (Edmonds 2009). Its breeding habits are unknown, but it is likely to reproduce like other species of the genus, with the eggs being laid on the ground, and the larvae developing in water.|
|Continuing decline in area, extent and/or quality of habitat:||Yes|
|Movement patterns:||Not a Migrant|
|Use and Trade:||There are no records of this species being utilized.|
Its forest habitat is likely to be receding due to subsistence agriculture, timber extraction, charcoal manufacture, invasive spread of eucalyptus, livestock grazing and expanding human settlements. Andreone et al. (2008) record that there is a continuing decline in the extent and quality of its assumed habitat in northern Madagascar. Intensive illegal wood extraction of rosewood species within Marojejy National Park that followed the 2009 political crisis of Madagascar caused concerns for the survival of rainforest – restricted species, such as this one. However, while illegal rosewood logging has probably ceased, wood extraction currently taking place in the Park seems to occur at lower elevations and along the boundaries of Marojejy deforestation is taking place to clear land for agriculture (F. Glaw pers. comm. November 2015). The area in Ankazafa, where the potential hybrids of this species and Mantella ebenaui occur, is unprotected and is under threat from zebu grazing and agriculture (Edmonds 2009).
Species in this genus have tested positive for Batrachochytrium dendrobatidis (Bd), however currently there have been no negative effects observed within amphibian populations in Madagascar suggesting the Bd strain has a low virulence level (Bletz et al. 2015).
This species occurs in Marojejy National Park and Tsaratanana Strict Nature Reserve. The second site at the Analabe Rainforest is not protected, but is currently remote from logging activities (N.H.C. Rabibisoa pers. comm.). It is listed on CITES Appendix II.
Improved protection and management of forests throughout the region is required, including within the boundaries of protected areas.
Further research is essential to fully understand the distribution, origin, type and virulence of Bd lineages found in Madagascar (Bletz et al. 2015). Genetic studies should also be carried out on all Mantellas in the Ankazafa area to determine taxonomic identity (Edmonds 2009).
|Citation:||IUCN SSC Amphibian Specialist Group. 2017. Mantella manery. The IUCN Red List of Threatened Species 2017: e.T57447A84167433.Downloaded on 18 October 2017.|
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