| Popis: |
Clathrina conifera Klautau & Borojević, 2001 Fig. 6; Table 6 Clathrina conifera Klautau & Borojević, 2001: 404. Clathrina primordialis (non C. primordialis (Haeckel, 1872)) – Borojević 1971: 527. — Borojević & Peixinho 1976: 992. — Mothes de Moraes 1985: 228. — Klautau et al. 1994: 372. — Muricy & Silva 1999: 160. Clathrina conifera – Klautau & Valentine 2003: 18. — Monteiro & Muricy 2004: 682. — Muricy & Hajdu 2006: 86. — Lanna et al. 2007: 1554. — Custódio & Hajdu 2011: 4. — Muricy et al. 2011: 33. — Bouzon et al. 2012: 42. Material examined Holotype BRAZIL: Arraial do Cabo, Rio de Janeiro (BMNH 1999.9.16.19, in ethanol). Other material ADRIATIC SEA: near the Island of Lokrum, 42°37’55.6” N, 18°06’49.4” E; 1–3 m deep, collected by V. Nikolić, 8 Oct. 2010 (PMR-13738 = UFRJPOR 6869); near Dubrovnik, 42°38'26.5" N, 18°06'14.2" E; 1 m, collected by V. Nikolić, 24 Sep. 2011 (PMR-17807, IRB-S2 = UFRJPOR 7541, IRB-S 3 = UFRJPOR 7542). Colour White in life and white or brown in ethanol. section. C. Triactines with variable sizes and shapes. Description Cormus composed of irregular and loosely anastomosed tubes (Fig. 6A). Water-collecting tubes are not present. The skeleton consists of triactines without organisation (Fig. 6B). Spicules (Table 6) TRIACTINES. Regular (equiangular and equiradiate). Their size is very variable. Actines are slightly conical to conical, straight, with blunt tips. Sometimes they are slightly undulated near the tips (Fig. 6C). Size: 88.5/ 10.2 µm. Ecology Specimens were collected on a semi-shaded, vertical hard limestone bottom under overhangs. They were often found in association with the macroalga Ellisolandia elongata (J. Ellis & Solander, 1786). Remarks Until now, this species was considered endemic to Brazil (Borojević 1971; Mothes de Moraes 1985; Klautau et al. 1994; Monteiro & Muricy 2004; Muricy & Hajdu 2006; Lanna et al. 2007). Originally, it was identified as C. primordialis (Haeckel, 1872) (Borojević 1971; Mothes de Moraes 1985; Klautau et al. 1994). However, considering differences in the size of the actines (holotype of C. conifera: 62.5–77.3(±9.3)–97.5/9(±1.0) µm; Haeckel measurements of C. primordialis: 100–150/ 8–12 µm), it was described as a new species: C. conifera. In the present work, we confirmed by morphological and molecular analyses (Fig. 16) that C. conifera is really distinct from C. primordialis and that it occurs in the Adriatic Sea. |
