No common name

Octacnemus kottae

ORDER Enterogona

FAMILY

Octacnemidae

TAXONOMY

Octacnemus kottae Sanamyan and Sanamyan, 2002, west of South Sandwich Trench, Atlantic.

OTHER COMMON NAMES

None known.

PHYSICAL CHARACTERISTICS

Solitary species. This transparent abyssal species resembles enlarged zooids of Octocorallia, rather than ascidians. It has a distinct cylindrical peduncle about 1.2 in (3 cm) long and a flattened oral disk with a crown of eight triangular lobes that have well-developed musculature and numerous lateral pinnules.

DISTRIBUTION

Although it is recorded only from the southern Atlantic, near the South Sandwich Islands, the species probably has a wider distribution, because several other records of Octacnemus may belong to this species.

HABITAT

Soft, muddy bottoms at depths of 12,140-12,830 ft (3,700-3,910 m).

BEHAVIOR

Nothing is known.

FEEDING ECOLOGY AND DIET

Nothing is known about how this and other species of Octacnemus feed. Unlike many other ascidians, this species probably is not a filter feeder. In the gut of other Octacnemus species, fragments of copepods, polychaetes, and diatoms have been found.

REPRODUCTIVE BIOLOGY

Nothing is known.

CONSERVATION STATUS

Not listed by the IUCN.

SIGNIFICANCE TO HUMANS None known. ♦

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