nov. Of the 24 species of sponges known from the area, only seven were found elsewhere too, thus suggesting a possible high endemism in Campos Basin. Nevertheless, the widespread occurrence of deep reef-framework building corals along a large sector of the Brazilian coast suggests these habitats...
Campos Basin coral mounds also harbor a rich associated fauna, whence only 16 species of sponges had been fully identified this far. Seven new species are described here, viz.Geodia garoupasp.
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The history of taxonomic studies on Japanese sponges is reviewed. A literature-based list of Japanese sponge species is provided (see Appendix), which includes 636 species plus 16 subspecies, represented by all four classes in the phylum Porifera. Demosp
Three Classes of Sponges Class Calcarea spicules of calcium carbonate Class Hexactinellida spicules of silica fused in a continuous and often very beautiful latticework Class Demospongiae the largest class, which has unfused silica spicules, OR a tough, keratin-like protein called spongin, OR a com...
spermatozoa may be a timed and coordinated event, as seen in certain species. Spermatozoa carried along by water currents can fertilize the oocytes borne in the mesohyl of other sponges. Early larval development occurs within the sponge, and free-swimming larvae are then released via the osculum...
species are demosponges. Sponges are multicellular animals consisting of masses of cells embedded in a gelatinous matrix. The matrix is bound together by minute, spine-like structures of calcium or silica called spicules and spongy organic fibers calledspongin. Sponges aresessile organismswith no ...
Another general cell type is typical of sponges - the amoebocyte. Amoebocytes are amoeboid cells that are free to crawl around (in and on) the body of the sponge in much the same way as do amoebae. (It would be interesting to examine the amoeboid locomotion of these cells in detail to...
dating from the LatePrecambrian. The approximately 5000 living sponge species are classified in the phylumPorifera, which is composed of three distinct groups: theHexactinellida(glass sponges), theDemospongiae, and theCalcarea(calcareous sponges). The class Demospongiae is by far the most diverse spo...
DEMOSPONGESA new genus of aspiculate homoscleromorph, Pseudocorticium, is described along with the new species P. jarrei found in a littoral cave located in the western Mediterranean Sea (France). The anatomy and cell composition are described and compared to that of species of the other ...