Reiswig, H.M.; Lee, W.L. (2007). A new species of Cladorhiza (Porifera: Cladorhizidae) from S. California (USA). pp 517-523 In: Custódio MR, Lôbo-Hajdu G, Hajdu E, Muricy G (eds) Porifera Research. Biodiversity, Innovation and Sustainability. Livros de Museu Nacional 28, Rio de Janeiro.

283288

Reiswig, H.M.; Lee, W.L.

2007

694 pp

Publication

Proceedings of the 7th International Sponge Conference, Buzios 2006

Available for editors   [request]

A new, very large species of Cladorhiza, collected from 1,442 m depth on the San Juan Seamount, S. California, by the ROV ‘Tiburon’, is strikingly bilateral in symmetry and feather-like in form. The specimen, 382 mm in total length, consists of a narrow stalk attached to hard substrate by a small disc, and an elongate spatulate body. The main body, triangular in section, bears a continuous fringe of about 400, 21-mm-long marginal filaments and a series of 13 fleshy lobes projecting from the midline of the frontal surface. Major biologic processes are regionally separated. Male reproduction (as spermatic cysts) is restricted to the tissues of the frontal surface of the main body, including the frontal lobes. Female reproduction, as oocyte production, embryo development and larval maturation, occurs exclusively in two abfrontal surface tissue bands in the cushions between the keel and the more fleshy main body. Prey, exclusively small crustaceans, are captured and digested only on/in marginal filaments. The elegant bilateral symmetry attained by this species attests to the continuing experimentation with development patterns within Porifera.

Pacific Ocean

Systematics, Taxonomy

Porifera

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