Hydrozoa | Leptothecata
Peña Cantero, A.L. and W. Vervoort. 2003. (Ref. 7414)
Size / Weight / Age
Demersal; depth range 1647 - 2044 m (Ref. 7414)
Climate / Range
Countries | FAO areas | Ecosystems | Occurrences | Introductions
Antarctic Atlantic: Scotia Sea.
30mm long, polysiphonic over almost its entire length. Main stem giving rise to three branches on the same side and another branch on the opposite side; branching approximately in
one plane. Hydrothecae alternately arranged in one plane, forming two longitudinal rows. Hydrothecae only slightly immersed into the branches, strongly curved outwards. Adcauline hydrothecal wall free for approximately half of its length. Free adcauline wall straight or slightly convex. Abcauline hydrothecal wall concave. Aperture circular; rim even and usually provided with numerous short renovations, tilted downwards, forming an acute angle with long axis of branch. Hydrotheca lacking mushroom-shaped diaphragm.
Members of the order Leptothecata include L-form hydroids. Life cycle: The zygote develops into planula and later into polyp then into free-swimming medusa (Ref. 833).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
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Estimation of some characteristics with mathematical models