Amphiophiura convexa

• Main Authors: Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias, Ávila, Sérgio P.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2019
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Ophiuroidea; Ophiurida; Ophiuridae; Amphiophiura; Amphiophiura convexa; North Atlantic
• Online Access: https://doi.org/10.5281/zenodo.5583145; http://treatment.plazi.org/id/4148D212047EFFFCFF33F90375B51320

Amphiophiura convexa (Lyman, 1878) Reports for the Azores: Ophioglypha convexa (Lyman, 1878) — $ Koehler 1909: 149–150, pl. 25, figs. 1–2; Amphiophiura convexa (Lyman, 1878) — Mortensen 1927a: 231; $ Cherbonnier & Sibuet 1972: 408; Martynov & Litvinova 2008: 81, fig. 2D; Ophiura convexa (Lyman, 1878) — Grieg 1932: 32; Amphiophiura bullata convexa (Lyman, 1878) — Paterson 1985: 132–133, fig. 51; García-Diez et al . 2005: 49; Smirnov et al . 2014: 201. Type locality: E of Japan, Pacific. See: Lyman (1878: 84, pl. 3, figs. 83–84, as Ophioglypha convexa ); Paterson (1985). Occurrence: cosmopolitan, in the Atlantic, Pacific and Indian Oceans; in the west Atlantic from Labrador basin to off New England (Paterson 1985) and in the East Atlantic, from Reykjanes Ridge south to the Bay of Biscay (Martynov & Litvinova 2008), Azores, Canaries (Koehler 1909) and?Madeira (Jesus & Abreu 1998); also reported from Vema Fracture zone, off Central African coast (24°02’S 14°41’W; Lyman 1882) and Demerara Abyssal Plain, off northern South America (Paterson 1985). Depth: 1,950 –6,810 m (Smirnov et al . 2014); AZO: 3,665 –4,261 m (Koehler 1909, Cherbonnier & Sibuet 1972). Habitat: soft bottoms (ooze; Koehler 1909). Remarks: Koehler (1909, 1914a) remarked on the variability present in Amphiophiura convexa (= Ophioglypha convexa ), which in certain aspects of its morphology resembles A . bullata (Thomson, 1877). Paterson (1985) based on the variability of the dorsal plating of the disc, assumed A . convexa to be a subspecies of A . bullata . Martynov & Litvinova (2008) disagreed and maintained the specific status, a view followed herein. Jesus & Abreu (1998) reported an ‘ Amphiophiura cf. bullata convexa ’ from Madeira shallow waters, between 20 and 100 m. In the North Atlantic, the genus Amphiophiura includes strictly deep-water species that tend to live well below 1,000 m (Paterson 1985; Smirnov 2014). In light of this, we doubt that the material reported by Jesus & Abreu (1998) belongs to A. convexa or ...