کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5919514 1570822 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Continental monophyly of cichlid fishes and the phylogenetic position of Heterochromis multidens
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Continental monophyly of cichlid fishes and the phylogenetic position of Heterochromis multidens
چکیده انگلیسی


- The phylogenetic position of the African cichlid Heterochromis multidens has been controversial.
- Biogeographic and chronological inferences for both the African and Neotropical cichlid species depend on the topology.
- We used a dataset of 29 nuclear loci to estimate gene trees, species trees, and test topological hypotheses.
- Congruence among results support a monophyletic African clade containing Heterochromis.

The incredibly species-rich cichlid fish faunas of both the Neotropics and Africa are generally thought to be reciprocally monophyletic. However, the phylogenetic affinity of the African cichlid Heterochromis multidens is ambiguous, and this distinct lineage could make African cichlids paraphyletic. In past studies, Heterochromis has been variously suggested to be one of the earliest diverging lineages within either the Neotropical or the African cichlid radiations, and it has even been hypothesized to be the sister lineage to a clade containing all Neotropical and African cichlids. We examined the phylogenetic relationships among a representative sample of cichlids with a dataset of 29 nuclear loci to assess the support for the different hypotheses of the phylogenetic position of Heterochromis. Although individual gene trees in some instances supported alternative relationships, a majority of gene trees, integration of genes into species trees, and hypothesis testing of putative topologies all supported Heterochromis as belonging to the clade of African cichlids.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular Phylogenetics and Evolution - Volume 73, April 2014, Pages 53-59
نویسندگان
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