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Biochemical genetic divergence and systematics in sponges of the genera Corticium and Oscarella (Demospongiae: Homoscleromorpha) in the Mediterranean Sea
Solé-Cava, A.M.; Boury-Esnault, N.; Vacelet, J.; Thorpe, J.P. (1992). Biochemical genetic divergence and systematics in sponges of the genera Corticium and Oscarella (Demospongiae: Homoscleromorpha) in the Mediterranean Sea. Mar. Biol. (Berl.) 113: 299-304
In: Marine Biology. Springer: Heidelberg; Berlin. ISSN 0025-3162, more
Peer reviewed article  

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Keywords
    Animal morphology; Cavernicolous species; Chemotaxonomy; Electrophoresis; Genetic drift; New species; Taxonomy; Corticium Schmidt, 1862 [WoRMS]; Homoscleromorpha [WoRMS]; Oscarella Vosmaer, 1884 [WoRMS]; Oscarellidae Lendenfeld, 1887 [WoRMS]; Plakinidae Schulze, 1880 [WoRMS]; Mediterranean [Marine Regions]; Marine

Authors  Top 
  • Solé-Cava, A.M.
  • Boury-Esnault, N., more
  • Vacelet, J.
  • Thorpe, J.P.

Abstract
    The sponge sub-class Homoscleromorpha is generally considered to include just two families, the Oscarellidae (without spicules) and the Plakinidae (with simple spicules). In May 1990, an unusual sponge was found deep inside a submarine cave in the western Mediterranean Sea. On the basis of externally visible characters this sponge appeared indistinguishable from the common plakinid species Corticium candelabrum. However, on close examination in the laboratory the new sponge proved to be devoid of spicules. Therefore, despite great morphological similarities to C. candelabrum, the new sponge should, by taxonomic convention, have been placed in the Oscarellidae. On the basis of other criteria, the similarities to C. candelabrum were great and the new sponge was at first considered to be conspecific. Thus, the taxonomic position of the new sponge and its relationship to C. candelabrum are highly confusing.

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