Paratriaenops auritus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Chiroptera Hipposideridae

Scientific Name: Paratriaenops auritus
Species Authority: (Grandidier, 1912)
Common Name(s):
English Grandidier's Trident Bat
French Triénope doré
Triaenops auritus Grandidier, 1912
Taxonomic Source(s): Benda, P. and Vallo, P. 2009. Taxonomic revision of the genus Triaenops (Chiroptera: Hipposideridae) with description of a new species from southern Arabia and definitions of a new genus and tribe. Folia Zoologica 58, Monograph 1: 1-45.
Taxonomic Notes: Recognized as a full species by Peterson et al. (1995) and supported by more recent morphological and genetic analyses (Ranivo and Goodman 2006; Russell et al. 2007).

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii) ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Andriafidison, D., Cardiff, S.G., Goodman, S.M., Hutson, A.M., Jenkins, R.K.B., Kofoky, A.F., Racey, P.A., Ranivo, J., Ratrimomanarivo, F.H. & Razafimanahaka, H.J.
Reviewer(s): Hutson, A.M., Racey, P.A. (Chiroptera Red List Authority) & Hoffmann, M. (Global Mammal Assessment Team)
This species is listed as Vulnerable as it has what appears to be restricted geographic range of less than 20,000 km² in northwestern Madagascar. The habitat is severely fragmented, and there is a continuing decline in the area and quality of habitat mainly due to agricultural activities. Further survey work is needed to help better ascertain the limits of the range of this species.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is endemic to the island of Madagascar where it has a restricted range in the north-western tip of the island, ranging between 50 m and 160 m above sea-level (Ranivo and Goodman 2006; Robinson et al. 2006; Russell et al. 2007). The Andrafiamena Mountains likely form the southern limit of this species (S. M. Goodman pers. comm.).
Countries occurrence:
Additional data:
Lower elevation limit (metres):50
Upper elevation limit (metres):160
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is thought to be relatively abundant within a localized area in the northern part of Madagascar. The largest roost recorded was 2,000 individuals in Réserve Spéciale d’Ankarana (S. G. Cardiff pers. obs.) and up to 1,000 individuals were recorded from a mine tunnel approximately 5 km from Andavokoera (J. Ranivo pers. comm.).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:This is an obligate cave-dwelling species that can be locally abundant, but has also been noted as rare within certain parts of its range (Robinson et al. 2006). Its patchy local distribution and density may be related to the presence of suitable caves for roosting (Goodman et al. 2005) and this species seems to prefer relatively narrow caves (Cardiff 2006). This species is thought to be dependent on relatively intact forest for foraging (Goodman et al. 2005).

Threats [top]

Major Threat(s): As a forest dependent species any decline in extent or quality of the remaining forest poses a threat to this species. In northern Madagascar, forest is lost because of expanding agriculture. There is also the threat of disturbance to cave roosting sites.

Conservation Actions [top]

Conservation Actions: This species is known to occur in three protected areas: Réserve Spéciale d’Ankarana, Réserve Spéciale d’Analamerana and Daraina forest (Ranivo and Goodman 2006; Russell et al. 2007). Conservation should be focused at the known cave roosts to secure the existing populations and closely monitor seasonal and annual population changes.

Classifications [top]

15. Artificial/Aquatic & Marine -> 15.10. Artificial/Aquatic - Karst and Other Subterranean Hydrological Systems (human-made)
14. Artificial/Terrestrial -> 14.6. Artificial/Terrestrial - Subtropical/Tropical Heavily Degraded Former Forest
7. Caves and Subterranean Habitats (non-aquatic) -> 7.1. Caves and Subterranean Habitats (non-aquatic) - Caves
1. Forest -> 1.5. Forest - Subtropical/Tropical Dry
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Conservation sites identified:Yes, over entire range
In-Place Species Management
In-Place Education
2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.1. Shifting agriculture
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

6. Human intrusions & disturbance -> 6.1. Recreational activities
♦ timing:Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.2. Species disturbance

1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats
3. Monitoring -> 3.1. Population trends

Bibliography [top]

Cardiff, S. G. 2006. Bat Cave Selection and Conservation in Ankarana, Northern Madagascar. Graduate School of Arts and Sciences, Columbia University.

Eger, J. L. and Mitchell, L. 2003. Chiroptera, bats. In: S. M. Goodman and J. P.Benstead (eds), The Natural History of Madagascar, pp. 1287-1298. The University of Chicago Press, Chicago, USA and London, UK.

Goodman, S. M., Andriafidison, D., Andrianaivoarivelo, R., Cardiff, S. G., Ifticene, E., Jenkins, R. K. B., Kofoky, A., Mbohoahy, T., Rakotondravony, D., Ranivo, J., Ratrimomanarivo, F., Razafimanahaka, J. and Racey, P. A. 2005. The distribution and conservation of bats in the dry regions of Madagascar. Animal Conservation 8: 153-165.

Hutson, A.M., Mickleburgh, S.P. and Racey, P.A. 2001. Microchiropteran Bats - Global Status Survey and Conservation Action Plan. IUCN/SSC Chiroptera Specialist Group, Gland, Switzerland and Cambridge, U.K.

IUCN. 2008. IUCN Red List of Threatened Species. Available at: (Accessed: 5 October 2008).

Ranivo, J. and Goodman, S. G. Submitted. Revision taxinomique des Triaenops malgaches (Mammalia: Chiroptera: Hippsoderidae). Zoosystema.

Robinson, J. E., D'Cruze, N. C., Dawson, J. S. and Green, K. E. 2006. Bat survey in Montagne de Francais, Antsiranana, northern Madagascar (6 April - 14 December 2005). African Bat Conservation News 9: 8-12.

Russell, A. L., Ranivo, J., Palkovacs, E. P., Goodman, S. M. and Yoder, A. D. 2007. Working at the interface of phylogenetics and population genetics: a biogeographcial analysis of Triaenops spp. (Chiroptera: Hipposideridae). Molecular Ecology 16: 839-851.

Citation: Andriafidison, D., Cardiff, S.G., Goodman, S.M., Hutson, A.M., Jenkins, R.K.B., Kofoky, A.F., Racey, P.A., Ranivo, J., Ratrimomanarivo, F.H. & Razafimanahaka, H.J. 2008. Paratriaenops auritus. The IUCN Red List of Threatened Species 2008: e.T40025A10306913. . Downloaded on 25 July 2017.
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