Genomic Variation in Hybridizing African Clawed Frogs from South Africa

Molecular variation data from one mitochondrial and 13 nuclear genes for the endangered Xenopus gilli and Xenopus laevis frog species. The dataset includes genetic samples collected in 1994 and 2013 to examine hybridization and gene flow. It provides evidence on the lack of extensive introgression despite the presence of F1 hybrids.

Use Cases

• Analyze gene flow between Xenopus gilli and X. laevis using 13 nuclear gene sequences to assess hybridization barriers.
• Compare mitochondrial and nuclear genetic diversity from 1994 and 2013 samples to evaluate temporal population stability.
• Investigate gene flow between eastern and western X. gilli populations using the 14 genomic regions for conservation planning.
• Assess the fitness of F1 hybrids by examining patterns of introgression across the surveyed mitochondrial and nuclear markers.

Strengths

• Data spans two sampling periods over two decades (1994 and 2013), enabling temporal analysis.
• Includes genetic variation from 14 distinct genomic regions (one mitochondrial, 13 nuclear).
• Focuses on an endangered species (Xenopus gilli) with direct conservation implications.

Limitations

• Sample size and number of individual records are unknown, limiting statistical power assessment.
• Geographic coverage is limited to specific populations in South Africa, reducing generalizability.
• Genetic analysis is restricted to 14 pre-selected genomic regions, not a whole-genome survey.

Provenance

Source

Benjamin L.S. Furman via Dryad digital repository.

Collection Method

Molecular analysis of genetic samples collected from field populations.

Time Range

Samples from 1994 and 2013.

Freshness

Data last updated in 2020, with genetic samples collected up to 2013.

Geography

South Africa, specifically populations of Xenopus gilli and X. laevis.