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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >
Cribrimorph and Other Cauloramphus Species (Bryozoa: Cheilostomata) from the Northwestern Pacific
| Title: | Cribrimorph and Other Cauloramphus Species (Bryozoa: Cheilostomata) from the Northwestern Pacific |
| Authors: | Dick, Matthew H Browse this author →KAKEN DB | | Mawatari, Shunsuke F Browse this author →KAKEN DB | | Sanner, JoAnn Browse this author | | Grischenko, Andrei V Browse this author |
| Keywords: | Bryozoa | | Cauloramphus | | Cheilostomata | | disjunctus clade | | dispersal | | diversity | | new species | | phylogeny | | speciation |
| Issue Date: | Feb-2011 |
| Publisher: | Zoological Society of Japan |
| Journal Title: | Zoological Science |
| Volume: | 28 |
| Issue: | 2 |
| Start Page: | 134 |
| End Page: | 147 |
| Publisher DOI: | 10.2108/ZSJ.28.134 |
| PMID: | 21303206 |
| Abstract: | We provide original descriptions for nine new species in the cheilostome bryozoan genus Cauloramphus (C. gracilis, C. Ordinarius, C. amphidisjunctus, C. cheliferoides, C. oshurkovi, C. infensus, C. parvus, C. peltatus, and C. ascofer) and a redescription of C. disjunctus Canu and Bassler, 1929. We delineate a group of eight species, here termed the ‘C. disjunctus clade,’ that have the opesial spine joints calcified to a greater or lesser extent in mature zooids; most also have paired, hypertrophied avicularia. This group includes C. amphidisjunctus, C. cheliferoides, C. infensus, C. parvus, C. peltatus, and C. ascofer in the Aleutian Islands, Alaska; C. oshurkovi in the Commander Islands; and C. disjunctus in Japan. High levels of apparent endemism in two unrelated bryozoan genera (Cauloramphus and Monoporella), and geographical population differentiation in C. ascofer indicating ongoing allopatric speciation, suggest high speciation rates for deep benthic bryozoans in the western Aleutians. A phylogenetic hypothesis for the C. disjunctus clade indicates that populations of Cauloramphus dispersed between the Aleutians and Asia on at least three separate occasions, and that the polarity of at least two of these dispersal events was from the Aleutians to Asia. |
| Rights: | http://www.zoology.or.jp/html/02_magazine/02_index.htm |
| Type: | article |
| URI: | http://hdl.handle.net/2115/49370 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: Matthew Hill Dick
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