Halecium pseudoincertus Pena Cantero 2014
- Dataset
- Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Cnidaria
- class
- Hydrozoa
- order
- Leptothecata
- family
- Haleciidae
- genus
- Halecium
- species
- Halecium pseudoincertus
description
Measurements (in µm). Cnidome: isorhizas [range 9.5 – 11.0 x 3.0 – 3.5, mean 10.3 ± 0.5 x 3.3 ± 0.2 (n = 11); ratio, range 2.9 – 3.7, mean 3.1 ± 0.3 (n = 11)]; larger microbasic euryteles [range 13.0 – 14.0 x 6.0, mean 13.4 ± 0.4 x 6.0 ± 0.0 (n = 4); ratio, range 2.2 – 2.3, mean 2.2 ± 0.1 (n = 4)].
discussion
Remarks. See Peña Cantero (2014 b) for the description of the species, as well as for a wide discussion about its similarities with the morphologically close H. incertus Naumov & Stepanjants, 1962. Ecology and distribution. Shelf and slope species collected at depths from 96 (Peña Cantero 2009) to 1019 m (Peña Cantero 2008); present material between 420 to 975 m, epilithic on pebbles and gravel. Circum-Antarctic distribution (Peña Cantero 2014 b). Present material is the first record from the Ross Sea, collected off Cape Adare and Possession Islands.
materials_examined
Material examined. Stn 8, stem 90 mm high (MNCN 2.03 / 650); Stn 15, stem 65 mm high (NIWA 117597); Stn 17, eight stems up to 180 mm high on pebbles (NIWA 117598); Stn 102, stem 90 mm high, with hydrorhizal stolons attached to gravel (MNCN 2.03 / 651); Stn 206, stem 90 mm high (NIWA 117599).