ArticleProceedings of the National Academy of Sciences of the United States of America2001
Evaluating hypotheses of basal animal phylogeny using complete sequences of large and small subunit rRNA.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers.
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Who cites it
74 citing papers in PubMed.
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- The promise and pitfalls of synteny in phylogenomics.PLoS biology · 2024Article
- Neuromuscular development in the emerging scyphozoan model system,Frontiers in neuroscience · 2023Article
- Molecular diversity, haplotype distribution and genetic variation flow of Bipolaris sorokiniana fungus causing spot blotch disease in different wheat-growing zones.Journal of applied genetics · 2022Article
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- Expression Analysis of Cnidarian-Specific Neuropeptides in a Sea Anemone Unveils an Apical-Organ-Associated Nerve Net That Disintegrates at Metamorphosis.Frontiers in endocrinology · 2020Article
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- Embracing Uncertainty in Reconstructing Early Animal Evolution.Current biology : CB · 2017Review
- Development of a multilocus-based approach for sponge (phylum Porifera) identification: refinement and limitations.Scientific reports · 2017Article
- Box Jellyfish Alatina alata Has a Circumtropical Distribution.The Biological bulletin · 2016Article
- Developmental Progression in the Coral Acropora digitifera Is Controlled by Differential Expression of Distinct Regulatory Gene Networks.Genome biology and evolution · 2016Article
- Evolutionary origins of germline segregation in Metazoa: evidence for a germ stem cell lineage in the coral Orbicella faveolata (Cnidaria, Anthozoa).Proceedings. Biological sciences · 2016Article
- The Antarctic Circumpolar Current as a diversification trigger for deep-sea octocorals.BMC evolutionary biology · 2016Article
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- Molecular characterization of Gastrothylax crumenifer (Platyhelminthes: Gastrothylacidae) from goats in the western part of India by LSU of nuclear ribosomal DNA.The Korean journal of parasitology · 2014Article
- Development and epithelial organisation of muscle cells in the sea anemone Nematostella vectensis.Frontiers in zoology · 2014Article
14 more citing papers are in PubMed but not listed here.
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Authors and funding
4 authors.
Funding
Abstract
We studied the evolutionary relationships among basal metazoan lineages by using complete large subunit (LSU) and small subunit (SSU) ribosomal RNA sequences for 23 taxa. After identifying competing hypotheses, we performed maximum likelihood searches for trees conforming to each hypothesis. Kishino-Hasegawa tests were used to determine whether the data (LSU, SSU, and combined) reject any of the competing hypotheses. We also conducted unconstrained tree searches, compared the resulting topologies, and calculated bootstrap indices. Shimodaira-Hasegawa tests were applied to determine whether the data reject any of the topologies resulting from the constrained and unconstrained tree searches. LSU, SSU, and the combined data strongly contradict two assertions pertaining to sponge phylogeny. Hexactinellid sponges are not likely to be the basal lineage of a monophyletic Porifera or the sister group to all other animals. Instead, Hexactinellida and Demospongia form a well-supported clade of siliceous sponges, Silicea. It remains unclear, on the basis of these data alone, whether the calcarean sponges are more closely related to Silicea or to nonsponge animals. The SSU and combined data reject the hypothesis that Bilateria is more closely related to Ctenophora than it is to Cnidaria, whereas LSU data alone do not refute either hypothesis. LSU and SSU data agree in supporting the monophyly of Bilateria, Cnidaria, Ctenophora, and Metazoa. LSU sequence data reveal phylogenetic structure in a data set with limited taxon sampling. Continued accumulation of LSU sequences should increase our understanding of animal phylogeny.
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