Sertularia Ellisii Deshayes & Milne Edwards, 1836: 142
Sertularella ellisii ellisii
Sertularella ellisii
The hydrozoan fauna (Cnidaria: Hydrozoa) from the peaks of the Ormonde and Gettysburg seamounts (Gorringe Bank, NE Atlantic)
Moura, Carlos J.
Zootaxa
2015
3972
2
148
180
[151,366,1525,1551]
Hydrozoa
Sertulariidae
Sertularella
Animalia
Leptothecata
11
159
Cnidaria
species
ellisii
Sertularia EllisiiDeshayes & Milne Edwards, 1836: 142–143. Sertularella ellisii ellisii.— Picard, 1956: 264–265, fig. 3d.—Peña Cantero & García Carrascosa, 2002: 124–125, fig. 24a–c. Sertularella ellisii.—Ramil et al., 1992: 503–507, figs. 6, 7.—Medel, 1996: 201–205, fig. 75.— Moura et al., 2011: 524, 525, fig. 3.
Material studied. Ormonde, stn 1: abundant, on Zonaria tournefortii, fertile colonies, epibionts: small algae and calcified Bryozoa; DBUA1527.10. Ormonde, stn. 2: abundant, on Zonaria tournefortii, epibionts: algae and calcified Bryozoa; DBUA1527.01. Ormonde, stn 3: abundant, fertile colonies, on Zonaria tournefortii; epibionts: small algae and calcified Bryozoa; DBUA1527.02. Ormonde, stn 4: very abundant, fertile colonies, on Zonaria tournefortii, epibionts: calcified Bryozoa, small algae and Clytia hemisphaerica; DBUA1527.03. Gettysburg, stn 5: few colonies, on Zonaria tournefortii, overgrown by small algae, DBUA1527.04. Gettysburg, stn 6: abundant, fertile colonies, on Zonaria tournefortiiand hydrocauli of Aglaophenia pluma, epibionts: algae; DBUA1527.05. Gettysburg, stn 7: on Zonaria tournefortii, epibionts: Bryozoa; DBUA1527.06. Gettysburg, stn 8: many colonies, fertile specimens, on Zonaria tournefortii, epibionts: Halecium tenellum, Eudendriumsp. (on hydrorhiza), Clytiacf. gracilis; DBUA1527.03. Gettysburg, stn 9: abundant, fertile colonies, on Zonaria tournefortii, epibionts: Lafoeina tenuis, small algae, Bryozoa. Gettysburg, stn 10: some specimens, on Zonaria tournefortii, epibionts: Lafoeina tenuisand Halecium tenellum; DBUA1527.09.
Remarks. Morphological measurements ( Table 1) when compared with those presented by Moura et al.(2011)for Sertularellalineages, place the Gorringe specimens more similar to the lineage of S. ellisiifrom W Portugalpublished by Moura et al. (2011), but hydrothecae of Gorringe specimens are slightly larger. After revelation of cryptic diversity within the S. ellisiispecies complex ( Moura et al. 2011), taxonomic confidence with this S.' ellisii' identification will only occur after molecular phylogenetic studies containing the Gorringe material and a greater haplotype representation of S. ellisiimorphologically similar specimens from their whole geographical areas of occurrence, including typelocalities of taxa that has already been synonymized (e.g. S. ellisii, Sertularella fusiformis( Hincks, 1861)and Sertularella lagenoides Stechow, 1919, but also species originally described from the southern hemisphere: Sertularella gaudichaudi(Lamouroux, 1824)and Sertularella picta(Meyen, 1834)). Moura et al.(2011)already demonstrated the validity of the nominal species Sertularella polyzonias( Linnaeus, 1758), Sertularella mediterraneaHartlaub, 1901and Sertularella ornata, that have been sometimes regarded as synonyms of S. ellisii, and share indeed close phylogenetic affinities. TABLE 1.Measurements of Sertularella ellisiiin Μm. Stn 4 Stn 6 Internodes, lenght 620–840 600–850 diameter at node 170–180 150–200 Hydrotheca length abcauline wall 540–610 620–680 length free part adcauline wall 370–440 460–670 length adnate part adcauline wall 300–360 290–350 diameter at margin 210–250 200–260 maximum diameter 310–360 330–360 Gonotheca length 1580–1600 1280–1370 maximum diameter 750–1 700–900 diameter at aperture 350–450 200–220 number of annulations 6–7 7–8 cusps 5 3 Reported distribution.Eastern Atlantic.—Gorringe (present study), mainland Portugal( Cornelius 1979; Moura et al. 2011), S Spain(Medel 1996), N Spain(e.g. Altuna et al. 1984; Isasi & Saiz 1986; Altuna & García- Carrascosa 1990; García Corrales et al.1980; Ramil et al.1992), France( Teissier 1965; Fey 1970), Belgium( Muller 2004). Probably misidentified in the Azores (Medel & Vervoort 1998; Vervoort 2006) after detection of cryptic diversity within S. ellisiiand also S. fusiformisthat has been regarded as conspecific to S. ellisii( Moura et al. 2011). Records from Madeira ( Vervoort 2006; Wirtz 2007), Selvagens, Canary Islands, Cape Verdeand Mauritania(e.g. Medel & Vervoort 1998; Vervoort 2006) may be therefore dubious too, after molecular analyses of Moura et al. (2011)that demand higher haplotype sampling of Sertularellapopulations in the Macaronesian region to clarify the taxonomy of this group. Mediterranean.— Spain(e.g. García-Corrales et al. 1980; García-Carrascosa 1981; Gili 1986; Medel 1996), Chafarinas Islands (Peña Cantero & García Carrascosa 2002); Algeria( Picard 1955), France(e.g. Leloup 1934b; Picard 1956), Italy(e.g. Boero & Fresi 1986; DiCamillo et al. 2006; Puce et al.2009), Adriatic ( Broch 1933), Aegean Sea (Morri & Bianchi 1999), Turkey( Marinopoulos 1979), Israel( Vervoort 1993), Lebanon( Morri et al.2009). Elsewhere.—Some (dubious) records in the western Atlantic and Pacific (e.g Cairns et al. 2002).