Unnecessary splitting of genus-level clades reduces taxonomic stability in amphibians

Unnecessary splitting of genus-level clades reduces taxonomic stability in amphibians

26 March 2024 | Stephen Mahony, Rachunliu G. Kamei, Rafe M. Brown, Kin Onn Chan
The paper discusses the negative impact of unnecessarily splitting genus-level clades in amphibians, which can destabilize taxonomy and create confusion for users. The authors evaluate several recent genus-level splits in four amphibian families (Dicroglossidae, Microhylidae, Ranidae, Rhacophoridae) and argue that many of these splits are based on weak evidence and do not provide clear diagnostic characters. They suggest using the subgenus rank instead of creating new genera to avoid unnecessary taxonomic changes. The study also addresses the taxonomic status of the monotypic genus Pterorana relative to Hylarana. The authors emphasize the importance of considering the needs of non-taxonomic users, such as conservationists and educators, and advocate for a stable and intuitive taxonomic system. They highlight the importance of thorough reviews of published data and the use of comprehensive datasets to ensure accurate taxonomic decisions. The study concludes that many recently proposed genera lack sufficient diagnostic characters and are not phylogenetically stable, and thus should be considered synonyms of existing genera. The authors recommend using subgenus ranks or informal taxonomic groups instead of creating new genera to maintain taxonomic stability.The paper discusses the negative impact of unnecessarily splitting genus-level clades in amphibians, which can destabilize taxonomy and create confusion for users. The authors evaluate several recent genus-level splits in four amphibian families (Dicroglossidae, Microhylidae, Ranidae, Rhacophoridae) and argue that many of these splits are based on weak evidence and do not provide clear diagnostic characters. They suggest using the subgenus rank instead of creating new genera to avoid unnecessary taxonomic changes. The study also addresses the taxonomic status of the monotypic genus Pterorana relative to Hylarana. The authors emphasize the importance of considering the needs of non-taxonomic users, such as conservationists and educators, and advocate for a stable and intuitive taxonomic system. They highlight the importance of thorough reviews of published data and the use of comprehensive datasets to ensure accurate taxonomic decisions. The study concludes that many recently proposed genera lack sufficient diagnostic characters and are not phylogenetically stable, and thus should be considered synonyms of existing genera. The authors recommend using subgenus ranks or informal taxonomic groups instead of creating new genera to maintain taxonomic stability.
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