Title |
An updated 18S rRNA phylogeny of tunicates based on mixture and secondary structure models
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Published in |
BMC Ecology and Evolution, August 2009
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DOI | 10.1186/1471-2148-9-187 |
Pubmed ID | |
Authors |
Georgia Tsagkogeorga, Xavier Turon, Russell R Hopcroft, Marie-Ka Tilak, Tamar Feldstein, Noa Shenkar, Yossi Loya, Dorothée Huchon, Emmanuel JP Douzery, Frédéric Delsuc |
Abstract |
Tunicates have been recently revealed to be the closest living relatives of vertebrates. Yet, with more than 2500 described species, details of their evolutionary history are still obscure. From a molecular point of view, tunicate phylogenetic relationships have been mostly studied based on analyses of 18S rRNA sequences, which indicate several major clades at odds with the traditional class-level arrangements. Nonetheless, substantial uncertainty remains about the phylogenetic relationships and taxonomic status of key groups such as the Aplousobranchia, Appendicularia, and Thaliacea. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Japan | 1 | 33% |
Unknown | 2 | 67% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 3 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Brazil | 5 | 3% |
Germany | 3 | 2% |
Spain | 3 | 2% |
Japan | 3 | 2% |
France | 2 | 1% |
United Kingdom | 1 | <1% |
Canada | 1 | <1% |
Switzerland | 1 | <1% |
Argentina | 1 | <1% |
Other | 3 | 2% |
Unknown | 174 | 88% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 45 | 23% |
Student > Master | 38 | 19% |
Student > Ph. D. Student | 36 | 18% |
Professor | 15 | 8% |
Student > Bachelor | 14 | 7% |
Other | 28 | 14% |
Unknown | 21 | 11% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 119 | 60% |
Biochemistry, Genetics and Molecular Biology | 28 | 14% |
Environmental Science | 15 | 8% |
Earth and Planetary Sciences | 5 | 3% |
Linguistics | 1 | <1% |
Other | 8 | 4% |
Unknown | 21 | 11% |