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 ...
74 Professional Paper NMFS 12 58. Lissodendoryx (Lissodendoryx) papillosa Koltun, 1958 Description. This species appears as described by Koltun (1958) as a globular or massive-lobate sponge, only slightly elastic and up to 6 cm in height. It bears closely spaced cone-shaped papillae and has an easily detachable dermal membrane. Color in life is gold to golden brown. Skeletal structure. Spicules form an irregular mesh. Styles (495–1050 × 15–24 µm) are smooth, generally slightly acanthose at the blunt end. Ectosomal tylotes (275–415 × 8–10 µm) have acanthose ends. Microscleres are arcuate isochelae (25–38 µm). Zoogeographic distribution. Rare. In Alaska – Bering Sea (Zhemchug Canyon). Elsewhere – previously known only from the Sea of Okhotsk. Habitat. In Alaska – attached to hexactinellid sponge skeletons at a depth of 911 m. Elsewhere – no information available. Photo. 1) Specimen collected at a depth of 911 m in Zhemchug Canyon, Bering Sea, with associated ophiuroids.
59. Monanchora alaskensis (Lambe, 1895) Description. This stalked sponge widens from a relatively narrow peduncle to the appearance of many agglutinated tubes (up to eight tubes). Growth form may also be flabellate, dactylate, or irregularly lobate (Koltun, 1959). Surface is smooth; large oscula are arranged in rows on the apical surface. The consistency is elastic and compressible but difficult to tear due to the polyspicular tracts of the choanosome. Height is to at least 17 cm. Color in life is golden brown to brown. Skeletal structure. There are ectosomal thin styles (120–200 × 7–9 µm), choanosomal styles (180–360 × 13–20 µm) that form an irregular meshwork of polyspicular tracts, anchorate isochelae (70–90 µm), and small isochelae (30–40 µm). Zoogeographic distribution. Widespread but uncommon in the North Pacific Ocean. In Alaska – central Aleutian Islands and Bering Sea. Elsewhere – Bering Sea (Russia) and Sea of Okhotsk. Habitat. In Alaska – attached to bedrock and cobbles at depths between 146 and 364 m. Elsewhere – on peb- bles, rocks, and sand at depths between 32 and 148 m and temperatures of 1.4 to 6.5°C. Photo. 1) Specimen collected at a depth of 146 m in the central Aleutian Islands. Grid marks are 1 cm 2 . 75
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58. Lissodendoryx (Lissodendoryx) papillosa Koltun, 1958<br />
Description. This species appears as described by<br />
Koltun (1958) as a globular or massive-lobate sponge,<br />
only slightly elastic and up <strong>to</strong> 6 cm in height. It bears<br />
closely spaced cone-shaped papillae and has an easily<br />
detachable dermal membrane. Color in life is gold <strong>to</strong><br />
golden brown.<br />
Skeletal structure. Spicules form an irregular mesh.<br />
Styles (495–1050 × 15–24 µm) are smooth, generally<br />
slightly acanthose at <strong>the</strong> blunt end. Ec<strong>to</strong>somal tylotes<br />
(275–415 × 8–10 µm) have acanthose ends. Microscleres<br />
are arcuate isochelae (25–38 µm).<br />
Zoogeographic distribution. Rare. In Alaska – Bering<br />
Sea (Zhemchug Canyon). Elsewhere – previously known<br />
only from <strong>the</strong> Sea <strong>of</strong> Okhotsk.<br />
Habitat. In Alaska – attached <strong>to</strong> hexactinellid sponge<br />
skele<strong>to</strong>ns at a depth <strong>of</strong> 911 m. Elsewhere – no information<br />
available.<br />
Pho<strong>to</strong>. 1) Specimen collected at a depth <strong>of</strong> 911 m<br />
in Zhemchug Canyon, Bering Sea, with associated<br />
ophiuroids.