Hydractinia angusta Hartlaub 1904
Creators
Description
Hydractinia angusta Hartlaub, 1904
(Pl. 1A–E, Fig. 2A–C)
Hydractinia angusta Hartlaub, 1904: 7, pl. 4. — Naumov & Stepanjants, 1972: 35, fig. 1. — Stepanjants, 1979: 13, pl. 1 fig. 7. — Peña Cantero & Ramil, 2006: 950, fig. 2A. — Peña Cantero, 2012: 855.
Hydronema angustum — Stechow, 1923: 67. — Totton, 1930: 138. — Briggs, 1939: 10.
Hydractinia dendritica Hickson & Gravely, 1907: 9, pl. 2 figs 7–10.
Hydronema dendriticum — Stechow, 1921: 252. — Stechow, 1923: 67, fig. F.
? Hydractinia sp. —Stepanjants, 1972: 59, fig. 4.
Material examined. Stn. SHO — 16.ii.2011, Ant.09/2011 (43 m): fertile (female) colony on worm tube (MHNG- INVE-79798). Stn. ARD — 28.i.2011, Ant.11/2011 (39 m): fertile (female) colony on worm tube (MHNG-INVE- 79799).
Description. Hydrorhiza an encrusting mat issued through the coalescence of the stolonal system, covered by naked coenosarc (Pl. 1C). Spines present, often continuous with each other (Pl. 1D), provided with low ridges of perisarc (Pl. 1E), open or closed at tips. Polyps dimorphic: gastro- and gonozooids. Gastrozooids up to 5 mm high in fixed material, notably longer in life (Pl. 1A); with 12–14 amphicoronate tentacles and dome-shaped hypostome. Gonozooids dwarfed, less than 0.5 mm high, and degenerate, with 1–5 tentacles, and possibly no mouth; 4–6 rounded gonophores basally, each carrying three eggs. Nematocysts: desmonemes (6.0–6.5) × (3.6–3.8) µm and microbasic euryteles (8.9–9.8) × (3.1–3.5) µm (both measured undischarged).
Remarks. Totton (1930) reexamined the type of H. dendritica Hickson & Gravely, 1907 and suggested that it could reasonably be considered as conspecific with Hartlaub's (1904) species, an opinion which is followed here.
Geographical distribution. Circum-Antarctic (Peña Cantero & Ramil 2006).
Notes
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Linked records
Additional details
Identifiers
Related works
- Cites
- Figure: 10.5281/zenodo.213238 (DOI)
- Is part of
- Journal article: 10.5281/zenodo.213236 (DOI)
- Journal article: http://publication.plazi.org/id/EB31FF9BF446161FFF8E4803EF1C224D (URL)
- Is source of
- https://sibils.text-analytics.ch/search/collections/plazi/170887E3F447161EFF194B2EEB2D2400 (URL)
Biodiversity
- Family
- Hydractiniidae
- Genus
- Hydractinia
- Kingdom
- Animalia
- Order
- Anthoathecata
- Phylum
- Cnidaria
- Scientific name authorship
- Hartlaub
- Species
- angusta
- Taxon rank
- species
- Taxonomic concept label
- Hydractinia angusta Hartlaub, 1904 sec. Galea & Schories, 2012
References
- Hartlaub, C. (1904) Hydroiden. In: Expedition antarctique Belge. Resultats du voyage du S. Y. Belgica en 1897 - 1899. Rapports scientifiques, Zoologie, 1 - 19.
- Naumov, D. V. & Stepanjants, S. D. (1972) Marine invertebrates from Adelie Land, collected by the XIIth and XVth French Antarctic Expeditions. 3. Hydroida. Tethys, Suppl. 4, 25 - 60.
- Stepanjants, S. D. (1979) Gidroidy vod antarktiki i subantarktiki. In: Rezul'taty biologicheskikh issledovanii sovetskikh antarkticheskikh ekspeditsii, 6. Issledovaniya Fauny Morei, 22 (30), 1 - 99.
- Pena Cantero, A. L. & Ramil, F. (2006) Benthic hydroids associated with volcanic structures from Bransfield Strait (Antarctica) collected by the Spanish Antarctic expedition GEBRAP 96. Deep Sea Research, 53, 949 - 958.
- Pena Cantero, A. L. (2012) Filling biodiversity gaps: benthic hydroids from the Bellinghausen Sea (Antarctica). Polar Biology, 35 (6), 851 - 865.
- Stechow, E. (1923) Zur Kenntnis des Hydroidenfauna des Mittelmeeres, Amerikas und anderer Gebiete. II. Teil. Zoologische Jahrbucher, 47 (1), 29 - 270.
- Totton, A. K. (1930) Coelenterata. Part V. Hydroida. Natural History Report of the British Antarctic (" Terra Nova ") Expedition, 1910. Zoology, 5 (5), 131 - 252.
- Briggs, E. A. (1939) Hydroida. Scientific Report of the Australasian Antarctic Expedition 1911 - 1914, 9 (4), 1 - 46.
- Hickson, S. J. & Gravely, F. H. (1907) Hydroid zoophytes. National Antarctic Expedition, 1901 - 1904, Natural History, 3, 1 - 34.
- Stechow, E. (1921) Neue Genera und Species von Hydrozoen und anderen Evertebraten. Archiv fur Naturgeschichte, (A) 87 (3), 248 - 265.