Haliclona (Rhizoniera) rosea ( Bowerbank, 1866 )

Evcen, Alper, Çinar, Melih Ertan, Zengin, Mustafa, Süer, Serdar & Rüzgar, Melih, 2016, New records of five sponge species (Porifera) for the Black Sea, Zootaxa 4103 (3), pp. 267-275 : 271

Haliclona (Rhizoniera) rosea ( Bowerbank, 1866)

Figure 2 D, 3D, 4D

Isodictya rosea Bowerbank 1866 , 282.

Haliclona (Rhizoniera) rosea ; De Weerdt 1987, 83, Fig. 7.

Material examined. ESFM –POR / 2014–004, October 2013, 30 m, sandy bottom, 1 specimen.

Description. Specimen is massive, encrusting and 1–5 cm in thickness. Color is brown in alcohol ( Fig. 2 D). Consistency soft and fragile. Surface is hispid because of projecting spicules. Tubular oscules are slightly elevated (0.5 to 3 cm). The ectosomal skeleton is absent. Choanosomal skeletons are formed by multispicular primary lines, which consist of many single spicules ( Fig. 3 D). Spongin is scarce and confined to the nodes of the spicules. Spicules include only long and sharp tipped oxeas (125–200 x 3–8 µm) ( Fig. 4 D). No microscleres.

Habitat and distribution. This species was previously found under stones, rocks and shells from the infralittoral zone down to 100 m depth ( De Weerdt 1987, Van Soest et al. 2015).

Figures

FIGURE 2. Photographs of sponges: A. Hymedesmia (Hymedesmia) pansa, B. Chalinula renieroides, C. Haliclona (Halichoclona) fulva, D. Haliclona (Rhizoniera) rosea, E. Ircinia variabilis (scale bar: for A = 20 cm, B = 20 cm, C = 15 cm, D = 10 cm, E = 25 cm).

FIGURE 3. Skeleton networks of sponges: A. Hymedesmia (Hymedesmia) pansa, B. Chalinula renieroides, C. Haliclona (Halichoclona) fulva, D. Haliclona (Rhizoniera) rosea E. Ircinia variabilis: 1. secondary fibres, 2. primary fibrils, 3. thin filaments. (Scale bar: for A = 150 µm, B = 180 µm, C = 150 µm, D = 130 µm, E 1, 2 = 100 µm, E 3 = 120 µm).

FIGURE 4. Spicules of sponges: A. Hymedesmia (Hymedesmia) pansa: 1. straight (subtylo) tornotes, 2. acanthostyles, 3. arcuate isochelae, B. Chalinula renieroides: curved oxeas, C. Haliclona (Halichoclona) fulva: fusiform oxeas, D: Haliclona (Rhizoniera) rosea: oxeas (Scale bar: A 1 = 30 µm, A 2 = 30 µm, A 3 = 10 µm, B = 20 µm, C = 40 µm, D = 25 µm).