Cook, S. de C.; Bergquist, P.R. (2002). Family Dysideidae Gray, 1867. Pp. 1061-1066. In: Hooper, J.N.A. & Van Soest, R.W.M. (eds) Systema Porifera - A guide to the classification of sponges. (2volumes) Kluwer Academic/ Plenum Publishers: New York, 1708 +xvliii. ISBN 0-306-47260-0 (printed version).

9073

Cook, S. de C.; Bergquist, P.R.

2002

ISBN 0-306-47260-0 (printed version)

Publication

The PDF supplied here is a proof - NOT the definitive printed text - of a chapter of the Systema Porifera

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Dysideidae Gray (Demospongiae, Dictyoceratida), including Spongelidae, consists of five valid genera, with approximately 43 species described worldwide. In Dysideidae spongin fibres making up the anastomosing skeleton are always concentrically stratified but to varying degrees. As in some members of the Thorectidae, this character is affected in development by the extent to which the sponge incorporates foreign debris into the fibres. Pith components, as optically distinct central regions of the fibres, are evident, except where fibres are packed with detritus. The choanocyte chambers are eurypylous, and the matrix contains only light collagen reinforcing. The sponges are histologically simple, with few secretory cell types present. The sponge texture is soft and compressible unless rendered brittle by interstitial detritus. Incorporation of debris into both fibres and matrix is frequent. The sponge surface is always conulose, but the size, shape and arrangement of conules ranges from very small, fine and even, Dysideidae Gray (Demospongiae, Dictyoceratida), including Spongelidae, consists of five valid genera, with approximately 43 species described worldwide. In Dysideidae spongin fibres making up the anastomosing skeleton are always concentrically stratified but to varying degrees. As in some members of the Thorectidae, this character is affected in development by the extent to which the sponge incorporates foreign debris into the fibres. Pith components, as optically distinct central regions of the fibres, are evident, except where fibres are packed with detritus. The choanocyte chambers are eurypylous, and the matrix contains only light collagen reinforcing. The sponges are histologically simple, with few secretory cell types present. The sponge texture is soft and compressible unless rendered brittle by interstitial detritus. Incorporation of debris into both fibres and matrix is frequent. The sponge surface is always conulose, but the size, shape and arrangement of conules ranges from very small, fine and even,

Systematics, Taxonomy

Porifera

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