Vulcanella aberrans Maldonado & Uriz 1996

• Main Authors: Cárdenas, Paco, Rapp, Hans Tore
• Format: Other/Unknown Material
• Language: unknown
• Published: 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Demospongiae; Astrophorida; Vulcanellidae; Vulcanella; Vulcanella aberrans; Norway; Northern Norway
• Online Access: https://zenodo.org/record/6166247; https://doi.org/10.5281/zenodo.6166247

Vulcanella cf. aberrans (Maldonado & Uriz, 1996) (Figures 14–16) Synonymy. Vulcanella (Vulcanella) aberrans: Cárdenas et al. 2011, Table S 1. Material. ZMBN 80959, Traenadjupet, northern Norway, 66 º 58.22 'N, 11 º 7.26 'E, 320 m, bottom: mud with rare pebbles, boxcore. Comparative material examined. Vulcanella aberrans, CEAB-POR. BIO 021B, paratype, slope of Alboran Island, 35 º 54 '- 35 º 52 'N, 3 º09'- 3 º05'W, 70-120 m; ZMAPOR 21193, Gulf of Cadiz, 35 º 39.274 'N, 07º 20.013 'E, 1390 m, tiny fragment; ZMAPOR 21170, Gulf of Cadiz, 35 º 39.274 'N, 07º 20.013 'E, 1390 m; ZMAPOR 18012, Morocco, near Tanger, 35 ° 17 ' 39.66 "N, 6 ° 47 ' 16.18 "W, 531 m. Vulcanella gracilis, ZMAPOR 18025, off Morocco, 529 m. Outer morphology (Fig. 14 A). Massive sponge. Our specimen is broken up in several fragments. The largest, ficiform, attached to a small stone is 5 cm high and 4.5 cm wide. Color alive and in ethanol, of surface and choanosome, is whitish. Specimen is compressible. Surface is irregular, strongly hispid and dirty (due to trapped sediments). One damaged oscular basket was observed on top of the largest fragment (Fig. 14 E). Oscule openings in the sieve are fairly large (exhalant apertures are 0.5-2 mm). Pores were not found. Skeleton (Fig. 14 B-D). Accumulation of spirasters and paratangential microxeas at the surface. This layer is ca 150 µm thick, thus invisible to the naked eye. Orthotriaenes and dichotriaenes are only present at the surface, albeit in low numbers. They are more or less positioned radially, with their cladomes beyond the surface (Fig. 14 D). Oxeas I and some oxeas II also cross the surface. Oxeas I are found all over the surface of the sponge but they are longer and wider around the oscula. The arrangement of the spicules in the choanosome is confused. Spirasters are more rare as one leaves the surface, they are nonetheless present around canals. Plesiasters on the other hand, are abundant in the choanosome, as well as microxeas. The oscular basket is surrounded by atrial oxeas I (Fig. 14 ...