Demospongiae

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Demospongiae

[dem·ə′spən·jē‚ē]
(invertebrate zoology)
A class of the phylum Porifera, including sponges with a skeleton of one-to four-rayed siliceous spicules, or of spongin fibers, or both.
References in periodicals archive ?
Transcriptome profiling of the demosponge Amphimedon queenslandica reveals genome-wide events that accompany major life cycle transitions.
This material was analyzed by Zea (1987) within a broader assessment of sponges from several areas of the Colombian Caribbean, describing 23 demosponge species for Uraba.
The marine demosponge Chondrosia reniformis Nardo, 1847 incorporates a wide range of foreign materials, including silica, in its ectosome; showing unusual selectivity, C.
This association could be direct, as is the case for some demosponges that attach to one or on both valves (Fig.
1] were calculated for spicules of the demosponge Ephydatia fluviatilis, with a size of 200-350 [micro]m in length and a diameter of 15 [micro]m (Imsiecke et al.
The first integrins to be cloned from early-diverging metazoans were an a integrin subunit from the demosponge Geodia cydonium (Pancer et al.
Altogether, 56 demosponge species from four different geographic locations were investigated.
Symbiotic zooxanthellae in Cinachyra tarentina, a non-boring demosponge.
The demosponge Amphimedon queenslandica has 8 NK genes in its genome, of which 6 are clustered within a 71-kb stretch of DNA (Fig.
Okadaic acid, an apoptogenic toxin for symbiotic/parasitic annelids in the demosponge Suberites domuncula.
Furthermore, unlike those in demosponge collars, microvilli in Sycon are rarely
A fine-structural study of the reproductive biology of Caribbean populations of the demosponge Chondrilla nucula led us to investigate various cell inclusions.