EDGE Community

Project information

[Project name/title]

Population size and population genetics of the Critically Endangered Togo slippery frog.

[Project description/overview]

This study will explore the ecology and population genetics of the Critically Endangered Togo slippery frog (Conraua derooi) for urgent conservation planning. The species faces an imminent extinction threat as a result of habitat loss, habitat degradation and hunting pressures. Conraua derooi is one of the least studied African amphibians and is reported present in only two isolated sites (Atewa Mountains in Ghana and Togo-Volta Hills along the Ghana-Togo border). Urgent effort is required to conserve this species and ecological and genetic data is critical to making informed conservation intervention to save this species.

Eastern Ghana

Project type:

Relevant EDGE species:
Togo Slippery Frog (Conraua derooi)

Project members:
Caleb Ofori-Boateng

Relevant species
30. Togo Slippery Frog (Conraua derooi) CR

A close relative of the world‘s largest frog (the Goliath frog), although it is barely a quarter the size.

[Relevance description]

To preserve the last known viable population of the Critically Endangered Togo slippery frog (Conraua derooi)

Project summary

The population size, habitat preferences and genetic distance between the two isolated subpopulations will be determined and compared over a 12-month period. Field methods will include a direct count using mark-recapture techniques and measuring variables that relate to the forest structure and vegetation characteristics of these sites. Tissue samples from toe-clippings of the frogs will be collected and analysed in a laboratory to determine their genetic composition. I would account for detection probabilities in count data collected and subsequently determine population size using the triple catch method. Habitat variables gathered will be used as covariates in the development of patch occupancy models to determine habitat preferences. Genetic data will be analyzed using population aggregation and maximum likelihood methods. By determining the ecological limitations, population trends and genetic composition of this species, we can begin to develop conservation management strategies for these areas.

  1. Determine the population size of the Togo slippery frog in the Togo-Volta hills along the Ghana-Togo border.
  2. Determine the genetic distance between the Atewa and Togo Hills populations, and test the hypothesis that these are distinct species.
  3. Provide field training (capacity building) for local conservation professionals.
  4. Create local awareness on the plight of amphibians with emphasis on the Togo slippery frog.
Project members
Mr Caleb Ofori-Boateng : Project Leader; EDGE Fellow

I am a Ghanaian with huge passion for conservation of West Africa's amphibians and reptiles.

[Member role description]
Within this project:

I supervise, lead and coordinate all components of the project.

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Associated Blog Posts
25th Jul 14
It was midmorning at the exquisite auditorium in the middle of the Burgers Zoo in Arnhem, Netherlands when I took my turn to address 500 distinguished pe...  Read

17th Apr 13
EDGE Fellow Caleb Ofori Boateng is one of West Africa's leading herpetologists and through his EDGE Fellowship he will now be championing the little know Tog...  Read