Integrated Marine Information System (IMIS)

Persons | Institutes | Publications | Projects | Datasets
[ report an error in this record ]basket (0): add | show Print this page
Polyphyly of "sclerosponges" (Porifera, Demospongiae) supported by 28S ribosomal sequences
Chombard, C.; Boury-Esnault, N.; Tillier, A.; Vacelet, J. (1997). Polyphyly of "sclerosponges" (Porifera, Demospongiae) supported by 28S ribosomal sequences. Biol. Bull. 193(3): 359-367
In: The Biological Bulletin. Marine Biological Laboratory: Lancaster. ISSN 0006-3185; e-ISSN 1939-8697
Peer reviewed article  
Available in  Authors 
Keyword
    Marine
Authors  Top 
  • Chombard, C.
  • Boury-Esnault, N., more
  • Tillier, A.
  • Vacelet, J., more
Abstract
    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.
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors 
[Back]

WoRMS

Using WoRMS

Tools

Connect with us

This service is powered by LifeWatch Belgium
Learn more»
Website and databases developed and hosted by Flanders Marine Institute · Page generated on 2020-07-14 05:53:17+02:00 · Privacy and cookie policy