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 ...
126 Professional Paper NMFS 12 105. Cladocroce ventilabrum (Fristedt, 1887) Description. Two growth forms exist: 1) massive to hemispherical, and 2) fan-shaped and stalked. The fan may be thin-bladed or form an ovoid tube with a large osculum on top. The surface is irregularly corrugated with crater-like oscula. Both growth forms narrow somewhat to a basal attachment or short stalk. Consistency is soft, elastic, and easily torn. Size is to 10 cm × 10 cm. Color in life is reddish brown or golden brown. Skeletal structure. There is an ectosomal unispicular reticulation of tangentially arranged oxeas (160–180 × 5–12 µm). Where oxeas are connected, one to four are arranged perpendicular to the surface. There is a choanosomal unispicular reticulation; in places paucispicular tracts are connected by single spicules. Zoogeographic distribution. Widespread but uncommon. In Alaska – central Aleutian Islands. Elsewhere – North Pacific Ocean (Sea of Japan), Arctic Ocean (Barents Sea and Greenland Sea), and North Atlantic Ocean (Davis Strait). Habitat. In Alaska – attached to cobbles, pebbles, and bivalve shells at depths between 155 and 235 m. Elsewhere – reported at depths between 40 and 718 m. Photos. 1) Specimen collected at a depth of 190 m in the central Aleutian Islands. Grid marks are 1 cm 2 . 2) Same specimen as in photo 1 (center) in situ. 3) Specimen attached to a scallop shell (Chlamys sp.) collected at a depth of 155 m in the central Aleutian Islands. Grid marks are 1 cm 2 . 4) Specimen attached to a pebble collected at a depth of 155 m in the central Aleutian Islands. Grid marks are 1 cm 2 .
106. Haliclona bucina Tanita and Hoshino, 1989 Description. This small vase-shaped sponge has a thin fistular stalk or basal fistular stolons. Due to the reticulation of single spicules these sponges are only slightly elastic and consequently very fragile. Height is to 3 cm and width to 1 cm. Color in life is light brown to golden brown. Skeletal structure. There is a unispicular reticulation of oxeas (165–195 × 7–9 µm), slightly longer than those originally described. Zoogeographic distribution. Rare. In Alaska – central Aleutian Islands. Elsewhere – known only from Sagami Bay, Japan. Habitat. In Alaska – attached to the calcareous sponge Leucandra tuba at a depth of 145 m. Elsewhere – depths between 80 and 95 m. 127 Photo. 1) Specimen (center) attached to the calcareous sponge Leucandra tuba collected at a depth of 145 m in the central Aleutian Islands. Grid marks are 1 cm 2 .
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106. Haliclona bucina Tanita and Hoshino, 1989<br />
Description. This small vase-shaped sponge has a<br />
thin fistular stalk or basal fistular s<strong>to</strong>lons. Due <strong>to</strong> <strong>the</strong><br />
reticulation <strong>of</strong> single spicules <strong>the</strong>se <strong>sponges</strong> are only<br />
slightly elastic and consequently very fragile. Height is<br />
<strong>to</strong> 3 cm and width <strong>to</strong> 1 cm. Color in life is light brown<br />
<strong>to</strong> golden brown.<br />
Skeletal structure. There is a unispicular reticulation<br />
<strong>of</strong> oxeas (165–195 × 7–9 µm), slightly longer than those<br />
originally described.<br />
Zoogeographic distribution. Rare. In Alaska – central<br />
Aleutian Islands. Elsewhere – known only from Sagami<br />
Bay, Japan.<br />
Habitat. In Alaska – attached <strong>to</strong> <strong>the</strong> calcareous sponge<br />
Leucandra tuba at a depth <strong>of</strong> 145 m. Elsewhere – depths<br />
between 80 and 95 m.<br />
127<br />
Pho<strong>to</strong>. 1) Specimen (center) attached <strong>to</strong> <strong>the</strong> calcareous<br />
sponge Leucandra tuba collected at a depth <strong>of</strong> 145<br />
m in <strong>the</strong> central Aleutian Islands. Grid marks are 1 cm 2 .
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