Symplectoscyphus paulensis Stechow 1923
Creators
Description
Symplectoscyphus paulensis Stechow, 1923
Figs 16C, 17 K–M; Table 11
Symplectoscyphus paulensis Stechow, 1923: 8.
Symplectoscyphus vervoorti El Beshbeeshy, 2011: 184, fig. 61.
Symplectoscyphus paulensis – Stechow 1925: 467, fig. 28. — Millard 1967: 183, fig. 4G–H; 1975: 317, fig. 102A–C; 1977: 107; 1978: 199; 1979: 142; 1980: 144, fig. 5A–B. — Vervoort 1972: 180, figs 60B, 61; 1993: 263, figs 63, 65A. — Hirohito 1983: 51, fig. 24. — Vervoort & Watson 2003: 222, fig. 53A–B. — Watson 2003: 170, fig. 20. — Soto Àngel & Peña Cantero 2019: 37, fig. 11I.
Sertularella paulensis – Stepanjants 1979: 71, pl. 17 fig. 2.
Material examinedPACIFIC OCEAN • a colony, 3 × 3.2 cm, without gonothecae; off New Caledonia, stn DW4759; 23°12′ S, 168°03′ E; 317–343 m; 26 Aug. 2016; KANACONO leg.; one fragment was used for DNA extraction, DNA 1390; voucher MHNG-INVE- 120851; barcode identifier MK 073104; MNHN-IK-2015-393 • a fertile colony, 4.5 × 5 cm; same collecting data as for preceding; MNHN-IK-2015-393.
RemarksThe present material fits the description and illustrations given by Vervoort (1993) of S. paulensis. It is mainly characterized by 1) its rootlike hydrorhiza, firmly adhering the colony to a hard substrate; 2) the stem is unbranched but fascicled, tending to monosiphonic distally; 3) the internodes are weakly indicated, and composed of a minute apophysis (supporting a cladium) together with its associated axillar hydrotheca, as well as two alternate hydrothecae above; 4) the cladia are given off regularly in an alternate manner; unbranched, up to 3 cm long, composed of up to 26 hydrothecate internodes separated by weak oblique nodes; 5) the gonothecae are laterally flattened, with undulated walls; aperture rounded atop of a neck region borne on a terminal, slightly depressed plateau; likely female, containing 1–2 large, ovoid bodies.
El Beshbeeshy (2011) created S. vervoorti for material studied earlier by both Vervoort (1972, as S. paulensis) and Stepanjants (1979, as Sertularella paulensis), on the account of 1) wider internodes and nodes; 2) hydrothecae circular in cross section and isodiametric throughout; 3) hydrothecal aperture everted, rim provided with pointed cusps. However, in light of the reexamination of the lectotype of S. paulensis by Vervoort (1993: fig. 43A–D) and the comparative measurements given in Table 11, this doesn’t seem justified. Indeed, Vervoort (1993: 263) clearly stated that the “Valdivia material is in perfect agreement with specimens described by Vervoort (1972: 180–183, figs 60b, 61)”.
DistributionOff St. Paul (Stechow 1923), off Mozambique (Millard 1967), Vema Seamount (Vervoort 1972), South Africa (Millard 1975), Patagonian Shelf (Stepanjants 1979; El Beshbeeshy 2011, as S. vervoorti sp. nov.), New Caledonia (Vervoort 1993, present study), New Zealand (Vervoort & Watson 2003),
Japan (Hirohito 1983), Macquarie Island (Watson 2003) and Antarctica (Peña Cantero 2012; Soto Àngel & Peña Cantero 2019).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- MK
- Event date
- 2016-08-26
- Family
- Sertulariidae
- Genus
- Symplectoscyphus
- Kingdom
- Animalia
- Order
- Leptothecata
- Phylum
- Cnidaria
- Scientific name authorship
- Stechow
- Species
- paulensis
- Taxon rank
- species
- Verbatim event date
- 2016-08-26
- Taxonomic concept label
- Symplectoscyphus paulensis Stechow, 1923 sec. Galea & Schuchert, 2019
References
- Stechow E. 1923. Neue Hydroiden der Deutschen Tiefsee-Expedition, nebst Bemerkungen uber einige anderen Formen. Zoologischer Anzeiger 56 (1 - 2): 1 - 20.
- El Beshbeeshy M. 2011. Thecate hydroids from the Patagonian shelf (Coelenterata, Hydrozoa, Thecata). G. Jarms (ed.). Verhandlungen des Naturwissenschaftlichen Vereins in Hamburg 46: 19 - 233.
- Stechow E. 1925. Hydroiden der Deutschen Tiefsee-Expedition. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer " Valdivia " 1898 - 1899 27: 383 - 546.
- Millard N. A. H. 1967. Hydroids from the south-west Indian Ocean. Annals of the South African Museum 50 (9): 169 - 194.
- Vervoort W. 1972. Hydroids from the Theta, Vema and Yelcho cruises of the Lamont-Doherty geological observatory. Zoologische Verhandelingen 120: 1 - 247.
- Hirohito, Emperor of Japan. 1983. Hydroids from Izu Oshima and Niijima. Publications of the Biological Laboratory: 1 - 83. Imperial Household, Tokyo.
- Vervoort W. & Watson J. E. 2003. The marine fauna of New Zealand: Leptothecata (Cnidaria: Hydrozoa) (thecate hydroids). NIWA Biodiversity Memoir 119: 1 - 538.
- Watson J. E. 2003. Deep-water hydroids (Hydrozoa: Leptolida) from Macquarie Island. Memoirs of the Museum of Victoria 60 (2): 151 - 180. https: // doi. org / 10.24199 / j. mmv. 2003.60.18
- Soto Angel J. J. & Pena Cantero A. L. 2019. Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica). Zootaxa 4570 (1): 1 - 78. https: // doi. org / 10.11646 / zootaxa. 4570.1.1
- 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.
- Vervoort W. 1993. Cnidaria, Hydrozoa, Hydroida: Hydroids from the western Pacific (Philippines, Indonesia and New Caledonia) I. Sertulariidae (Part 1). In: Crosnier A. (ed.) Resultats des Campagnes MUSORSTOM, Vol. 11. Memoires du Museum national d'histoire naturelle 158: 89 - 298.
- Millard N. A. H. 1975. Monograph on the Hydroida of southern Africa. Annals of the South African Museum 68: 1 - 513.
- Pena Cantero A. L. 2012. Filling biodiversity gaps: benthic hydroids from the Bellingshausen Sea (Antarctica). Polar Biology 35 (6): 851 - 865. https: // doi. org / 10.1007 / s 00300 - 011 - 1130 - y