Antennella secundaria

Moura, Carlos J., 2015, The hydrozoan fauna (Cnidaria: Hydrozoa) from the peaks of the Ormonde and Gettysburg seamounts (Gorringe Bank, NE Atlantic), Zootaxa 3972 (2), pp. 148-180 : 162-163

Antennella secundaria

(fig. 4D)

Sertularia secundaria Gmelin, 1791: 3856 .

Antennella secundaria .— Cornelius, 1995b: 121, fig. 28A–C, E–G.— Medel & Vervoort, 1995: 35 –37, fig. 14.— Medel & López-González, 1996: 201.— Schuchert, 1997: 14 –18, figs. 3–4, table 1.— Ramil et al., 1998b: 31.— Ansín Agís et al. 2001: 140 –145, fig. 63.—Peña Cantero & García Carrascosa, 2002: 100–102, fig. 18e–h.

Material studied. Ormonde, stn 1: scarce material, on Zonaria tournefortii and Aglaophenia kirchenpaueri ; DBUA 1504.02; Genbank accession no. KM402030 . Gettysburg, stn 7: abundant, on Zonaria tournefortii ; DBUA 1504.01. Gettysburg, stn 9: few shoots on Zonaria tournefortii , DBUA 1504.03.

Remarks. This species was previously recorded in the Gorringe, but from deep waters: 250–320 meters ( Ramil et al. 1998b). The 16S sequence herein published of A. secundaria collected from the Ormonde seamount, presents an exclusive haplotype in an unpublished sequence database with several Antenella specimens from mainland Portugal, deep waters of the Gulf of Cadiz, shallow and deep waters of the Azores, and coastal waters of Madeira, Mediterranean, N France, NW Atlantic and NE Pacific (Moura et al., unpublished). The 16S haplotype from the Gorringe presented higher phylogenetic affinities with shallow-water specimens from mainland Portugal, but is not too divergent to a sample from shallow waters of the Azores (Moura, unpublished 16S data and analyses). Nevertheless, there is a possibility that in the future the haplotype of A. secundaria discovered in the Gorringe might also be found elsewhere, or might reveal higher phylogeographic affinities with other geographical areas.

Reported distribution. Eastern Atlantic.—Widespread (see Ansín Agís et al. 2001)

Mediterranean.—Widespread (see Peña Cantero & García Carrascosa 2002)

Elsewhere.—Considered to have a worldwide distribution from temperate to tropical seas, both at shallow and deep waters (e.g. Rees & Thursfield 1965; Millard 1975; Gili et al. 1989; Schuchert 1997; Ansín Agís et al. 2001). Uncommon at high latitudes ( García Carrascosa 1981).