Phylogenetic Diversity and Taxonomy of Amphibians

Amphibians, comprising frogs and toads (Anura), salamanders and newts (Caudata) and caecilians (Gymnophiona), represent one of the most evolutionarily diverse vertebrate assemblages. Phylogenetic diversity captures the depth and breadth of evolutionary history across these lineages, revealing ancient splits, cryptic radiations and adaptive innovations. Advances in molecular and genomic techniques have transformed taxonomic practice: integrative approaches combining morphology, bioacoustics and multilocus data now underpin genus- and species-level revisions. Modern phylogenomics has clarified relationships among major clades, refined divergence times and reconstructed biogeographical histories across all continents. Taxonomic frameworks serve not only to catalogue diversity but also to guide conservation prioritisation, with measures of evolutionary distinctiveness woven into red-listing and habitat-management decisions. Concrete examples include the identification of key behavioural traits in anuran clades and the recognition of micro-endemism in leaf-litter toads, both of which have reshaped our understanding of amphibian evolution under past climate shifts and ongoing habitat loss.

Research from Nature Portfolio

Recent phylogenomic analyses of music frogs (genus Nidirana) have traced the origin of mud-nesting behaviour to around 19 million years ago in south-central China. Broad taxon sampling and population genomics reveal that nidification acted as an evolutionary innovation, driving older lineages into novel habitats, while sister groups that lost the behaviour underwent rapid radiations. Correlations with paleoclimatic fluctuations in temperature and precipitation suggest that the gain and loss of nesting strategies shaped regional diversification and dispersal patterns under changing environmental regimes.

Phylogenetic Diversity and Taxonomy of Amphibians publication trend

The graph below shows the total number of articles in phylogenetic diversity and taxonomy of amphibians across all publications each year (not limited to Nature Index journals).

Technical terms

Phylogenetic diversity: The range of evolutionary lineages represented within a group of organisms.

Taxonomy: The science of classifying organisms into hierarchical groups based on shared characteristics and evolutionary relationships.

Clade: A group of organisms that includes an ancestor and all its descendants.

Mitogenome: The complete mitochondrial genome sequence used for phylogenetic and population studies.

Anuran: A member of the order Anura, encompassing frogs and toads.

References

1. Contrasting nidification behaviors facilitate diversification and colonization of the Music frogs under a changing paleoclimate. Communications Biology (2024).
2. Generic classification of Asian horned toads (Anura: Megophryidae: Megophryinae) and monograph of Chinese species. 动物学研究 (2023).
3. Two Complete Mitochondrial Genomes of Leptobrachium (Anura: Megophryidae: Leptobrachiinae): Characteristics, Population Divergences, and Phylogenetic Implications. Genes (2023).