Craniella polyura

• Main Authors: Morozov, Grigori, Sabirov, Rushan, Zimina, Olga
• Format: Text
• Language: unknown
• Published: Zenodo 2019
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Demospongiae; Spirophorida; Tetillidae; Craniella; Craniella polyura; Breitfuss; Kara Sea; Iceland; Kara-Laptev; laptev
• Online Access: https://dx.doi.org/10.5281/zenodo.3664859; https://zenodo.org/record/3664859

Craniella polyura (Schmidt, 1870) (Figure 13 (a – h)) Tetilla polyura Schmidt 1870, p. 66; pl. VI, fig. 8; Vosmaer 1885, p. 9 – 10; pl. I, figs 1 – 3; pl. II, fig. 16; pl. V, figs 3 – 7; Breitfuss 1911, p. 213; Rezvoi 1928, p. 76; Van Soest 2016, p. 322, fig. 5a – g Description (Figure 13 (a)). Sponge egg shaped, up to 4 cm in height and 2.5 cm in width. Surface even, slightly setose. The consistency is rather soft and elastic. Single conical osculum slightly displaced to the side from the summit. Comparatively long spicules protrude from the lower end of the body, forming a felt-like mass. Colour light brown. Two specimens examined. Skeleton Skeleton of radially spiral structure. Cortex absent. Spicules (Figure 13 (a – h)). Large oxea, usually with unequal ends, dimensions: 1532.6 – 2904.5 – 4375.3 ( n = 20) × 11.7 – 28 – 42.3 ( n = 20) µm. Small oxea, slightly fusiform, with equal ends, dimensions: 556.5 – 776 – 1117.9 ( n = 30) × 6.2 – 17.6 – 29.4 ( n = 25) µm. Anatriaenes, rhabdome length up to 5 cm and thickness 4 – 4.5 – 5.2 ( n = 10) µm; cladome length: 64 – 74.7 – 86.3 ( n = 10) µm. Sagittal protriaenes, rhabdome length: 1073 – 1637.9 – 2575 ( n = 15) × 2.6 – 3.66 – 5.6 ( n = 15) µm; length of paired cladomes: 20.2 – 33.3 – 69.4 ( n = 15) µm; unpaired cladome length: 66.7 – 106.5 – 179.7 ( n = 15) µm. Normal protriaenes, rhabdome length: 510 – 617.8 – 931.7 ( n = 10) × 4.7 – 5.8 – 6.9 ( n = 10) µm; cladome length: 22 – 27.8 – 33.2 ( n = 10) µm. Raphides, dimensions: 192 – 347.7 – 473 ( n = 10) × 1 – 2 µm. Sigmas centrotylote, spined, dimensions: 9 – 12.7 – 16 ( n = 25) µm. Distribution Iceland. Barents, Kara, Laptev (st. A-102, L-12) and East Siberian seas (st. A-31). Depth range: 33 – 313 m. : Published as part of Morozov, Grigori, Sabirov, Rushan & Zimina, Olga, 2019, Sponge fauna of the New Siberian Shoal: biodiversity and some features of formation, pp. 2961-2992 in Journal of Natural History 52 (47) on pages 2961-2992, DOI: 10.1080/00222933.2018.1554166, http://zenodo.org/record/3654165 : {"references": ["Schmidt O. 1870. Grundzuge einer Spongien-Fauna des atlantischen Gebietes. Leipzig: WilhelmEngelmann; p. iii - iv, 1 - 88. pls I - VI. German", "Breitfuss LL. 1911. Zur Kenntnis der Spongio-Fauna des Kola-Fjords. Travaux de la Societe Imperiale des Naturalistes de St. - Petersbourg Section Zoologie. 42: 209 - 226. French.", "Van Soest RWM. 2016. Sponge-collecting from a drifting ice floe: the Porifera obtained in the Kara Sea by the Dutch Polar Expedition 1882 - 83. Contrib Zool. 85 (3): 311 - 326."]}