Ancorina diplococcus Dendy 1924

• Main Authors: Kelly, Michelle, Sim-Smith, Carina
• Format: Other/Unknown Material
• Language: unknown
• Published: 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Demospongiae; Astrophorida; Ancorinidae; Ancorina; Ancorina diplococcus; Antarctic; Antarc*
• Online Access: https://zenodo.org/record/6168601; https://doi.org/10.5281/zenodo.6168601

Ancorina diplococcus (Dendy 1924) (Fig. 1 A, 3, 4A–C, 8; Table 1) Ancorina progressa Lendenfeld, 1907 var. diplococcus Dendy, 1924: 297. Ancorina progressa, Bergquist (1968: 40). Material examined. NIWA 43925: NZOI Stn I 808, continental shelf off Ninety Mile Beach, Northland, 35.042 ° S, 172.867 ° E, 192 m, 18 Jun 1981; NIWA 62048: 17 miles west of Pandora Bank and 31 miles west of Ninety Mile Beach, Northland, 34.648 ° S, 172.220 ° E, RV Kaharoa, 198–208 m, 21 Apr 1999, additional vouchers are in the CRRF reference collection (0 CDN 6733 -C) and at the USNM (USNM 1182984). Other material. Ancorina progressa var. diplococcus: NHMUK 1923.10.1.217, NHMUK 1923.10.1.218, NHMUK 1923.10.1.219, Terra Nova Stn 90, Three Kings Islands, 183 m, British Antarctic (Terra Nova) Expedition, 1910, 16 Jul – 24 Sep 1911, microscope slides from holotype R. N. L. 1 a; Ancorina progressa, Valdivia and Gazelle Lendenfeld 0 8.29. 130, 0 8.29. 131, and 0 8.29. 133. Type locality. Three Kings Islands. Distribution. Three Kings Islands, Pandora Bank, west of Ninety Mile Beach, Northland. Description. Small sponge composed of rounded lobes, 30–40 mm diameter (Fig. 1 A). Texture is compressible but not easily torn. Surface is rough to the touch, interior is very spiculose. Colour in life is purplish brown, interior is tan. Colour in alcohol is yellowish beige. Ectosome is approximately 1 mm thick and clearly differentiated from the choanosome by the lighter interior. No oscules or ostia visible with the unaided eye. Skeleton. Ectosome is 1000–1300 µm deep and clearly differentiated from the underlying choanosome (Fig. 3). The ectosome is translucent with a dense layer of fibrillar collagen near the lower boundary, 300–600 µm thick, and a much thinner layer of collagen at the surface, 50 µm thick. The ectosome is reinforced with dichotriaenes that radiate in dense brushes, their cladomes uppermost at the surface, the end of the rhabdomes just entering the choanosome. Non-euasterose microscleres form a thin, well defined crust at the ...