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Bokermannohyla izecksohni 

Scope: Global
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_onStatus_ew_offStatus_ex_off

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Hylidae

Scientific Name: Bokermannohyla izecksohni
Species Authority: (Jim and Caramaschi, 1979)
Taxonomic Notes: This species was previously included in the genus Hyla but has recently been moved to the genus Bokermannohyla (Faivovich et al. 2005).

Assessment Information [top]

Red List Category & Criteria: Critically Endangered (Possibly Extinct) B1ab(iii,v)+2ab(iii,v) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Annotations:
Needs updating
Assessor(s): Miguel Trefaut Rodrigues, Carlos Alberto Gonçalves da Cruz
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Justification:
Listed as Critically Endangered because its Extent of Occurrence is less than 100 km2 and its Area Of Occupancy is less than 10km2, all individuals are in a single location, and there is continuing decline in the extent and quality of its habitat, and in the number of mature individuals, in the state of São Paulo, southern Brazil.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is known only from Rubião Júnior, Botucatu, in the state of São Paulo, Brazil.
Countries occurrence:
Possibly extinct:
Brazil
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Surveys to locate this species in recent years have not found any individuals.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It was originally found on vegetation or on forest leaf-litter near streams. The type specimen was found in a temporary pond, which has subsequently disappeared. It breeds in temporary ponds.
Systems:Terrestrial; Freshwater

Threats [top]

Major Threat(s): The type locality of the species has been destroyed by agriculture and human settlement.

Conservation Actions [top]

Conservation Actions: The current known range of the species is not within any protected area. Further survey work is needed to determine if it occurs outside the vicinity of the type locality, and if it even still persists at the type locality.

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability:Suitable  
5. Wetlands (inland) -> 5.8. Wetlands (inland) - Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha)
suitability:Suitable  
1. Land/water protection -> 1.1. Site/area protection
1. Land/water protection -> 1.2. Resource & habitat protection

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
1. Residential & commercial development -> 1.1. Housing & urban areas
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.2. Small-holder farming
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.3. Livestock farming & ranching -> 2.3.2. Small-holder grazing, ranching or farming
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.5. Motivation Unknown/Unrecorded
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.2. Population size, distribution & trends

Bibliography [top]

Faivovich, J., Haddad, C.F.B., Garcia, P.C.O., Frost, D.R., Campbell, J.A. and Wheeler, W.C. 2005. Systematic review of the frog family Hylidae, with special reference to Hylinae: Phylogenetic analysis and taxonomic revision. Bulletin of the American Museum of Natural History 294: 1-240.

IUCN. 2004. 2004 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 23 November 2004.

Jim, J. and Caramaschi, U. 1979. Uma nova espécie de Hyla da região de Botucatu, São Paulo, Brasil (Amphibia, Anura). Revista Brasileira de Biologia: 717-719.


Citation: Miguel Trefaut Rodrigues, Carlos Alberto Gonçalves da Cruz. 2004. Bokermannohyla izecksohni. The IUCN Red List of Threatened Species 2004: e.T10355A3198060. . Downloaded on 28 September 2016.
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