Antennella secundaria
Creators
Description
Antennella secundaria (Gmelin, 1791)
(Fig. 9A–E)
Antennella secundaria — Ansín Agís et al., 2001: 140 –145, fig. 63 (synonymy).
Material examined. 13881#1, five stems up to 10 mm high, on Sertularella gayi, no gonothecae.
Description. Stems unbranched, up to 10 mm high, and with up to six hydrothecae. Stem resting on short apophysis. First two cauline internodes with two nematothecae, third internode longer and provided with six nematothecae (Fig. 9A). Remaining stem divided by alternating oblique and transverse nodes into an alternate series of hydrothecate/ahydrothecate internodes (Fig. 9B–D). Ahydrothecate internodes typically with three medial nematothecae (Fig. 9C), although internodes with only one also present (Fig. 9B). Hydrothecate internodes with one hydrotheca and four nematothecae: two flanking hydrothecal aperture on long pedicels (Fig. 9E) (frequently one without pedicel), one nematotheca at axil between adcauline hydrothecal wall and internode (Fig. 9D) and a mesial infrathecal nematotheca not reaching hydrothecal basal part (Fig. 9B–D). All nematothecae bi-chambered. Hydrotheca cup-shaped (Fig. 9E). Hydrothecal wall roughly straight in lateral view, but distinctly widening at distal part of adcauline side. Hydrothecal aperture circular; rim laterally concave (Fig. 9E).
Remarks. See Calder (1997b), Schuchert (1997) or Ansín Agís et al. (2001) for a wide discussion on the species.
Ecology and distribution. This is a eurybathic species, known between 0 (Millard 1975) and 2700 m (Vervoort 2006); present material collected from the Porcupine Seabight at a depth of 863 m. Worldwide distribution in temperate, subtropical and tropical seas (Vervoort 2006).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Halopterididae
- Genus
- Antennella
- Kingdom
- Animalia
- Order
- Leptothecata
- Phylum
- Cnidaria
- Scientific name authorship
- Gmelin
- Species
- secundaria
- Taxon rank
- species
- Taxonomic concept label
- Antennella secundaria (Gmelin, 1791) sec. Cantero & Horton, 2017
References
- Gmelin, J. F. (1791) Caroli a Linne, systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Editio decima tertia, aucta reformata. Tomus I, Pars 6. G. E. Beer, Lipsiae, 1100 pp. [pp. 3021 - 4120]
- Ansin Agis, J., Ramil, F. & Vervoort, W. (2001) Atlantic Leptolida (Hydrozoa, Cnidaria) of the families Aglaopheniidae, Halopterididae, Kirchenpaueriidae and Plumulariidae collected during the CANCAP and Mauritania-II expeditions of the National Museum of Natural History, Leiden, The Netherlands. Zoologische Verhandelingen, Leiden, 333, 3 - 268.
- Calder, D. R. (1997 b) Shallow-water hydroids of Bermuda: Superfamily Plumularioidea. Life Science Contributions. Royal Ontario Musseum, 161, 1 - 86.
- Schuchert, P. (1997) Review of the family Halopterididae (Hydrozoa, Cnidaria). Zoologische Verhandelingen, Leiden, 309, 1 - 162.
- Millard, N. A. H. (1975) Monograph on the Hydroida of southern Africa. Annals of the South African Museum, 68, 1 - 513.