Polyphyly of "sclerosponges" (Porifera, Demospongiae) supported by 28S ribosomal sequences

被引：43

作者：

Chombard, C

Boury-Esnault, N

Tillier, A

Vacelet, J

机构：

[1] Museum Natl Hist Nat, CNRS URA 699, Lab Biol Invertebres Marins & Malacol, F-75005 Paris, France

[2] Museum Natl Hist Nat, Serv Systemat Mol, CNRS GDR 1005, F-75005 Paris, France

[3] Univ Mediterranee, Ctr Oceanol, CNRS UMR 6540, F-13007 Marseille, France

来源：

BIOLOGICAL BULLETIN | 1997年 / 193卷 / 03期

关键词：

D O I：

10.2307/1542938

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

To test the competing hypotheses of polyphyly and monophyly of "sclerosponges," sequences from the 5' end of 28S ribosomal RNA were obtained for Astrosclera willeyana, Acanthochaetetes wellsi, and six other demosponge species. Phylogenetic relationships deduced from parsimony and neighbor-joining analyses suggest that these sclerosponges belong to two different orders of Demospongiae: Astrosclera willeyana, being closely related to the Agelasidae, belongs to the Agelasida, Acanthochaetetes wellsi, being closely related to the Spirastrellidae, belongs to the Hadromerida. These results contradict the hypothesis that sclerosponges are monophyletic and imply that a massive calcareous skeleton has evolved independently in several lineages of sponges.

引用

页码：359 / 367

页数：9

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