Cliona amplicavata Rützler, 1974

Bettcher, Larissa, Fernandez, Julio C. C., Gastaldi, Marianela, Bispo, André, Leal, Camille V., Leite, Dora, Avelino-Alves, Dhara, Clerier, Pedro H. B., Rezende, Dafinny, Gulart, Clara M. R., Pinheiro, Ulisses & Hajdu, Eduardo, 2023, Checklist, diversity descriptors and selected descriptions of a highly diverse intertidal sponge (Porifera) assemblage at Costa do Descobrimento (Bahia, Brazil), Zootaxa 5277 (3), pp. 443-489 : 460

publication ID 10.11646/zootaxa.5277.3.2

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Cliona amplicavata Rützler, 1974


Cliona amplicavata Rützler, 1974 View in CoL

( Tab. 1–2, 5; Fig. 8A–H View FIGURE 8 )

Studied material. MNRJ 20511 View Materials , Arraial D’Ajuda (16°29.861′ S, 39°4.068′ W, Porto Seguro, BA, Brazil), intertidal, coll. Leite D., 20 th March 2019 GoogleMaps .

Description. Alpha growth stage, ca. 5 cm in maximum diameter, with circular oscular and ostial papillae, mostly 1–3 mm in diameter. Color in vivo light-yellow, and beige in fixative ( Tab. 5; Fig. 8A View FIGURE 8 ).

Skeleton. Overall confused and in low density, except in papillae, where tylostyles form a dense felted layer in inhalant papillae and a palisade in oscular papillae, ( Figs. 8B–D View FIGURE 8 ). Several colored rounded cells throughout the ectosomal (mainly) and choanosomal regions ( Fig. 8E View FIGURE 8 ).

Spicules. Megascleres ( Tab. 5; Figs. 8F–H View FIGURE 8 ): tylostyles, slightly curved, pronounced, usually subterminal head, 160‒244.0‒302 x 3‒7.0‒10 µm. Microscleres ( Tab. 5; Fig. 8H View FIGURE 8 ): raphides, slightly curved, 67‒91.0‒113 µm.

Distribution. Previously Bermuda ( Ŗtzler 1974), Mediterranean ( Spain — Rosell & Uriz 2002), Greater Caribbean (Western Carib.— Ŗtzler et al. 2014; Southern Gulf of Mexico— Ugalde et al. 2015), Pacific Central America ( Costa Rica, Nicaragua — Pacheco et al. 2018). New record—Southwestern Atlantic (Costa do Descobrimento, BA, Brazil).

Ecology. Excavating limestone substrate under boulders amidst abundant silted filamentous organisms, mostly algae, hydroids and bryozoans.

Remarks. The species had already been collected in the southwestern Atlantic ( Brazil), but had not been formally described (Dr. C.V. Leal, unpubl. res.). Data presented here perfectly match previous descriptions of the species. Its in situ appearance is virtually indistinguishable from the commoner at Costa do Descobrimento, C. aff. celata ( Tab. 5).













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