A guide to the deep-water sponges of - NMFS Scientific Publications ...
A guide to the deep-water sponges of - NMFS Scientific Publications ... A guide to the deep-water sponges of - NMFS Scientific Publications ...
52 Professional Paper NMFS 12 36. Suberites excellens (Thiele, 1898) Description. This massively lobate sponge has irregularly cylindrical lobes. Surface is smooth to the unaided eye but microscopically hispid. Circular oscula are near tips of lobes and slightly elevated above the surface. Consistency is firm but elastic. Height is to 14 cm. Color in life is yellowish brown. Skeletal structure. Skeletal architecture is more or less confused in the interior but becomes radial towards the surface. The surface consists of a palisade of smaller tylostyles. There are thick tylostrongyles with round tyles at one end and only slightly tapering at the other (640–1890 × 17–46 µm), somewhat thinner and flexuous tylostrongyles (1140–2100 × 17–26 µm), and small tylostyles forming the palisade at the surface (175–520 × 8–12 µm). Zoogeographic distribution. Rare. In Alaska – Bering Sea (Zhemchug Canyon) and eastern Gulf of Alaska. Elsewhere – Holotype described from Sagami Bay, Japan; also recorded along Korean Coast (Sim and Kim, 1988). Habitat. In Alaska – attached to boulders and cobbles at depths between 390 and 601 m. Elsewhere – no information available. Remarks. This was previously known as Rhizaxinella excellens Thiele, 1898. It typically harbors an abundant and diverse complement of ophiuroid associates. Photos. 1) Fragments of specimen with ophiuroid associates collected at a depth of 390 m in Zhemchug Canyon, Bering Sea. 2) Close-up view of oscula atop the lobes.
37. Suberites simplex Lambe, 1893 Description. This small sponge has a subglobular to globular growth form. Surface is smooth to the unaided eye but microscopically hispid. Consistency is firm but elastic. Diameter is at least 5 cm. Color in life is golden brown to brown. Skeletal structure. Ectosomal skeleton consists of bouquets of small tylostyles at the surface. Densely packed larger tylostyles in the interior are arranged without orientation. Tylostyles are large (620–1170 × 10–20 µm) and small (120–230 × 3–5 µm). Zoogeographic distribution. Uncommon in the North Pacific Ocean. In Alaska – central Aleutian Islands. Elsewhere – Vancouver Island. Habitat. In Alaska – attached to pebbles at depths between 150 and 160 m. Elsewhere – reported at a depth of 73 m. 53 Photo. 1) Specimen collected at a depth of 155 m in the central Aleutian Islands. Grid marks are 1 cm 2 .
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- Page 21 and 22: 2. Leucandra poculiformis Hozawa, 1
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- Page 25 and 26: 5. Farrea occa occa Bowerbank, 1862
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37. Suberites simplex Lambe, 1893<br />
Description. This small sponge has a subglobular <strong>to</strong><br />
globular growth form. Surface is smooth <strong>to</strong> <strong>the</strong> unaided<br />
eye but microscopically hispid. Consistency is firm but<br />
elastic. Diameter is at least 5 cm. Color in life is golden<br />
brown <strong>to</strong> brown.<br />
Skeletal structure. Ec<strong>to</strong>somal skele<strong>to</strong>n consists <strong>of</strong> bouquets<br />
<strong>of</strong> small tylostyles at <strong>the</strong> surface. Densely packed<br />
larger tylostyles in <strong>the</strong> interior are arranged without<br />
orientation. Tylostyles are large (620–1170 × 10–20 µm)<br />
and small (120–230 × 3–5 µm).<br />
Zoogeographic distribution. Uncommon in <strong>the</strong><br />
North Pacific Ocean. In Alaska – central Aleutian Islands.<br />
Elsewhere – Vancouver Island.<br />
Habitat. In Alaska – attached <strong>to</strong> pebbles at depths between<br />
150 and 160 m. Elsewhere – reported at a depth<br />
<strong>of</strong> 73 m.<br />
53<br />
Pho<strong>to</strong>. 1) Specimen collected at a depth <strong>of</strong> 155 m in<br />
<strong>the</strong> central Aleutian Islands. Grid marks are 1 cm 2 .
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