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Biodegradation of shells of the black pearl oyster, Pinctada margaritifera var. cumingii, by microborers and sponges of French Polynesia
- L. Mao Che, T. Campion-Alsumard, N. Boury‐Esnault, C. Payri, S. Golubić, C. Bézac
- Environmental Science
- 1 September 1996
The composition, distribution and infestation sequence of organisms that destroy the commercially valuable shells of the black oyster Pinctada margaritifera var. cumingii Jameson, 1901 were studied.…
WNT/β-Catenin Signalling and Epithelial Patterning in the Homoscleromorph Sponge Oscarella
It is suggested that deployment of Wnt signalling is a common and perhaps ancient feature of metazoan epithelial patterning and morphogenesis.
Larval development in the Homoscleromorpha (Porifera, Demospongiae)
The presence of a basement membrane and a true epithelium in the larva of Homoscleromorpha—unique among poriferan clades and shared with Eumetazoa—suggests that Demospongiae could be paraphyletic.
Cytological evidence for cryptic speciation in Mediterranean Oscarella species (Porifera, Homoscleromorpha)
Three new sponge species without a skeleton, Oscarella viridis, O. microlobata, and O. imperialis, were found in sublittoral caves and on vertical walls along the coast of Provence and reveals an unexpected biodiversity of this genus in the Mediterranean Sea.
Taxonomic revision of the Mediterranean Plakina Schulze (Porifera, Demospongiae, Homoscleromorpha)
Accurate analysis of the internal anatomy and of the shape and ramification pattern of lophose spicules in scanning electron microscopy provides new, powerful morphological criteria for species discrimination in Plakina, thus generating an increase in estimates of the biodiversity of plakinids.
Reproduction of a hexactinellid sponge: first description of gastrulation by cellular delamination in the Porifera
Summary Oogenesis, spermatogenesis, embryogenesis, and the structure of the larva of Oopsacas minuta (Hexactinellida, Hexasterophora) were studied in a population living in a Mediterranean cave and…
COMPARATIVE STUDY OF PUTATIVE CONSPECIFIC SPONGE POPULATIONS FROM BOTH SIDES OF THE ISTHMUS OF PANAMA
A morphological, cytological and genetic comparison of putative conspeci¢c populations of Spirastrella sp. cf. mollis (Porifera: Demospongiae) from both sides of the Isthmus of Panama revealed a very…
NK homeobox genes with choanocyte-specific expression in homoscleromorph sponges
Data on nonbilaterian animals (sponges, cnidarians, and ctenophores) have suggested that Antennapedia (ANTP) class homeobox genes played a crucial role in the early diversification of animal body…
The characterisation and summer distribution of ultraphytoplankton in the Gulf of Gabès (Eastern Mediterranean Sea, Tunisia) by using flow cytometry
Anatomy, cytology and symbiotic bacteria of four Mediterranean species of Plakina Schulze, 1880 (Demospongiae, Homosclerophorida)
The internal anatomy, cytology and symbiotic bacteria of four Mediterranean species of the sponge genus Plakina Schulze are investigated under light and transmission electron microscopy in a search for new, taxonomically useful characters.