期刊
ZOOTAXA
卷 5174, 期 3, 页码 201-232出版社
MAGNOLIA PRESS
DOI: 10.11646/zootaxa.5174.3.1
关键词
Afromontane; Endemism; Conservation; Species Delimitation; Phylogeny
类别
资金
- Percy Sladen Memorial Fund
- IUCN/SSC Amphibian Specialist Group Seed Grant
- Department of Biology at Villanova University
- National Geographic Research and Exploration Grants [8556-08, WW-R018-17]
- University of Texas at El Paso (UTEP)
- US National Science Foundation [DEB-1202609, DEB-1145459]
- National Institutes on Minority Health and Health Disparities (NIMHD), a component of the National Institutes of Health (NIH) [G12MD007592]
This study utilizes molecular and morphological data to revise the taxonomy of the spiny reed frogs. The results suggest that populations from western Central Africa and Equatorial Guinea represent one species, while populations from the Albertine Rift and neighboring forests represent two new undescribed taxa.
The geographically widespread species Afrixalus laevis (Anura: Hyperoliidae) currently has a disjunct distribution in western Central Africa (Cameroon, Equatorial Guinea, Gabon, and possibly adjacent countries) and the area in and near the Albertine Rift in eastern Democratic Republic of the Congo and neighboring countries. At least two herpetologists have previously suggested that these disjunct populations represent distinct species, and herein, we utilize an integrative taxonomic approach with molecular and morphological data to reconcile the taxonomy of these spiny reed frogs. We sequenced 1554 base pans of the 16S and RAG1 genes from 34 samples of A. laevis and one sample of A. orophilus (sympatric with eastern populations of A. laevis), and combined these data with previously sequenced GenBank Afrixalus samples via the bioinformatics toolkit SuperCRUNCH. Phylogenctic trees, dated phylogenctic analyses, and species-delimitation analyses were generated with RAxML, BEAST, and BPP, respectively. Eleven mensural characters were taken from multiple specimens of A. laevis and A. orophilus, and compared with paired t-tests and analyses of covariance. These combined results suggested populations of A. laevis in western Central Africa (Cameroon and Bioko Island, Equatorial Guinea) represent one species, whereas populations from the Albertine Rift and nearby forests represent two undescribed taxa that are sister to A. dorsimaculatus. The two new species (A. lacustris sp. nov. and A. phantasma sp. nov.) are distinguished by our phylogenetic and species-delimitation analyses, significant differences in several mensural characters, qualitative morphological differences, and by their non-overlapping elevational distribution.
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