The IUCN Red List of Threatened Species™
ISSN 2307-8235 (online)
IUCN 2008: T54428A11143365
Leptodactylodon bicolor
Assessment by: Jean-Louis Amiet
View on www.iucnredlist.org
Citation: Jean-Louis Amiet. 2004. Leptodactylodon bicolor. The IUCN Red List of Threatened Species
2004: e.T54428A11143365. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54428A11143365.en
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THE IUCN RED LIST OF THREATENED SPECIES™
Taxonomy
Kingdom
Phylum
Class
Order
Family
Animalia
Chordata
Amphibia
Anura
Arthroleptidae
Taxon Name: Leptodactylodon bicolor Amiet, 1971
Assessment Information
Red List Category & Criteria:
Vulnerable B1ab(iii) ver 3.1
Year Published:
2004
Date Assessed:
April 30, 2004
Annotations:
Needs Updating
Justification:
Listed as Vulnerable because its Extent of Occurrence is probably less than 20,000 km2, it is known from
fewer than ten locations, and the quality and extent of its forest habitat in Cameroon and Nigeria is
declining.
Geographic Range
Range Description:
This species occurs on the southern and western edge of the Cameroon mountain range (excluding
Mount Cameroon), extending to the Obudu Plateau in eastern Nigeria. In Cameroon, it is known from
Mount Manenguba, Mount Nlonako, the Mbos Cliffs, Fotabong, Petit Diboum, Mount Bana, Acha Tugi
near Oshie, Bafut near Bamenda, and the Rumpi Hills. Its altitudinal range is 950-1,750m asl.
Country Occurrence:
Native: Cameroon; Nigeria
© The IUCN Red List of Threatened Species: Leptodactylodon bicolor – published in 2004.
http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54428A11143365.en
1
Distribution Map
© The IUCN Red List of Threatened Species: Leptodactylodon bicolor – published in 2004.
http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54428A11143365.en
2
Population
It is generally common in suitable habitat.
Current Population Trend: Decreasing
Habitat and Ecology (see Appendix for additional information)
An inhabitant of forest in the submontane zone, usually near rocky streams and springs, or on mossy
talus slopes with fissures and caves. It avoids dry areas, living in places where there tends to be
orographic mists during the dry season. It can survive in somewhat degraded habitats. Breeding takes
place in streams in rocky areas.
Systems: Terrestrial, Freshwater
Use and Trade (see Appendix for additional information)
The tadpoles are eaten for human food.
Threats (see Appendix for additional information)
The major threat to this species is forest loss due to smallholder farming activities and subsistence wood
extraction. The tadpoles are eaten locally by villagers in the Rumpi Hills.
Conservation Actions (see Appendix for additional information)
It occurs in the Cross River National Park in Nigeria. Further research is needed into the harvest level of
tadpoles of this species from the wild.
Credits
Assessor(s):
Jean-Louis Amiet
Reviewer(s):
Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson
and Neil Cox)
© The IUCN Red List of Threatened Species: Leptodactylodon bicolor – published in 2004.
http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54428A11143365.en
3
Bibliography
Amiet, J.-L. 1971. Leptodactylodon nouveau du Cameroun. Annales de la Faculté des Sciences du
Cameroun 7-8: 141-172.
Amiet, J.-L. 1980. Revision du genre Leptodactylodon Andersson (Amphibia, Anura, Asylosterninae).
Annales de la Faculté des Sciences du Yaoundé 27: 69-224.
Amiet, J.-L. 1983. Un essai de cartographie des anoures du Cameroun. Alytes: 124-146.
Amiet, J.-L. and Schiøtz, A. 1972. Voix d'Amphibiens camerounais. I - Astylosterninae: genres
Leptodactylodon, Scotobleps et Nyctibates. Annales de la Faculté des Sciences du Cameroun 12: 79-100.
Gartshore, M.E. 1986. The status of the montane herpetofauna of the Cameroon highlands. In: Stuart,
S.N. (ed.), Conservation of Cameroon Montane Forests, pp. 204-240. International Council for Bird
Preservation, Cambridge, U.K.
IUCN. 2004. 2004 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 23
November 2004.
Citation
Jean-Louis Amiet. 2004. Leptodactylodon bicolor. The IUCN Red List of Threatened Species 2004:
e.T54428A11143365. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54428A11143365.en
Disclaimer
To make use of this information, please check the Terms of Use.
External Resources
For Images and External Links to Additional Information, please see the Red List website.
© The IUCN Red List of Threatened Species: Leptodactylodon bicolor – published in 2004.
http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54428A11143365.en
4
Appendix
Habitats
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Habitat
Season
Suitability
Major
Importance?
1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
-
Suitable
-
5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent
Rivers/Streams/Creeks (includes waterfalls)
-
Suitable
-
5. Wetlands (inland) -> 5.2. Wetlands (inland) Seasonal/Intermittent/Irregular Rivers/Streams/Creeks
-
Suitable
-
0. Root -> 6. Rocky areas (eg. inland cliffs, mountain peaks)
-
Suitable
-
14. Artificial/Terrestrial -> 14.6. Artificial/Terrestrial - Subtropical/Tropical
Heavily Degraded Former Forest
-
Suitable
-
Use and Trade
(http://www.iucnredlist.org/technical-documents/classification-schemes)
End Use
Local
National
International
Food - human
Yes
No
No
Threats
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Threat
Timing
Scope
Severity
Impact Score
2. Agriculture & aquaculture -> 2.1. Annual &
perennial non-timber crops -> 2.1.2. Small-holder
farming
Ongoing
-
-
-
Stresses:
1. Ecosystem stresses -> 1.1. Ecosystem conversion
1. Ecosystem stresses -> 1.2. Ecosystem degradation
Ongoing
-
Stresses:
2. Species Stresses -> 2.1. Species mortality
Ongoing
-
Stresses:
1. Ecosystem stresses -> 1.2. Ecosystem degradation
5. Biological resource use -> 5.1. Hunting & trapping
terrestrial animals -> 5.1.1. Intentional use (species is
the target)
5. Biological resource use -> 5.3. Logging & wood
harvesting -> 5.3.5. Motivation
Unknown/Unrecorded
-
-
-
-
Conservation Actions Needed
(http://www.iucnredlist.org/technical-documents/classification-schemes)
© The IUCN Red List of Threatened Species: Leptodactylodon bicolor – published in 2004.
http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54428A11143365.en
5
Conservation Actions Needed
1. Land/water protection -> 1.1. Site/area protection
1. Land/water protection -> 1.2. Resource & habitat protection
2. Land/water management -> 2.1. Site/area management
Research Needed
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Research Needed
1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
3. Monitoring -> 3.1. Population trends
Additional Data Fields
Population
Population severely fragmented: No
© The IUCN Red List of Threatened Species: Leptodactylodon bicolor – published in 2004.
http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54428A11143365.en
6
The IUCN Red List Partnership
The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species
Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership. The IUCN
Red List Partners are: BirdLife International; Botanic Gardens Conservation International; Conservation
International; Microsoft; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas
A&M University; Wildscreen; and Zoological Society of London.
THE IUCN RED LIST OF THREATENED SPECIES™