Oceanapia ramsayi ( Lendenfeld, 1888 )

Calcinai, Barbara, Belfiore, Giuseppe, Pica, Daniela, Torsani, Fabrizio, Palma, Marco & Cerrano, Carlo, 2020, Porifera from Ponta do Ouro (Mozambique), European Journal of Taxonomy 698, pp. 1-56: 19-20

publication ID

https://doi.org/10.5852/ejt.2020.698

publication LSID

lsid:zoobank.org:pub:623BBCE3-12A5-45A9-802A-2ED2E15164A3

DOI

http://doi.org/10.5281/zenodo.4335436

persistent identifier

http://treatment.plazi.org/id/F52B791A-FFF4-E932-810C-FB2CC4CEF1B2

treatment provided by

Valdenar

scientific name

Oceanapia ramsayi ( Lendenfeld, 1888 )
status

 

Oceanapia ramsayi ( Lendenfeld, 1888)  

Fig. 11 View Fig

Rhizochalina ramsayi Lendenfeld, 1888: 188   , pl. 3.

Material examined

PONTA DO OURO • 1 dried fragment of about 6 ×1.5× 2 cm; 26°49′17.512″ S, 32°53′42.5″ E; Kev’s; 17 m deep; 20 Nov. 2015; Cerrano leg.; PdO27 GoogleMaps   1 small fragment of about 3 ×1× 1 cm; 26°49′17.512″ S, 32°53′42.503″ E; Kev’s; 17 m deep; 20 Nov. 2015; Cerrano leg.; PdO28. GoogleMaps  

Description

Live sponge globular-massive, with oscular tubes arising from the upper surface ( Fig. 11 View Fig A–C). The two specimens had distinct colors in life: bright red on the exterior and yellow inside ( Fig. 11 View Fig A–B), and dark brown on the exterior and light brown inside ( Fig. 11C View Fig ). Both dried samples are dark brown, firm and with a smooth surface.

SKELETON. Ectosome ( Fig. 11D View Fig ) constituted of a reticulation of fibers, 30–100 µm in section, forming oval meshes of 350–400 µm of diameters and a secondary sub-isodictyal network of single oxeas. Choanosome formed by thick fibers of spicules, 30–50 µm in section, forming irregularly rounded meshes, 180–380 µm.

SPICULES. Slightly curved oxeas ( Fig. 11E View Fig ), 130–(156.7, 11.7)–170× 2.5–(6.2, 1.7)– 10 µm, often with slightly mucronate tips.

Remarks

The samples belong to the genus Oceanapia Norman, 1869   , considering the numerous fistulae on the surface and the general skeleton structure. The genus includes 95 species, 75 of them from the Indo- Pacific Ocean ( Santos Neto et al. 2018). The skeleton, spicule size and general morphology fit the original description of Oceanapia ramsayi Lendenfeld, 1888   from Australia. The holotype was described as yellow, while other, subsequent records of this species report a red color, such as in Itampolo, Madagascar ( Bensemhoun et al. 2008) and brown in Port Jackson, Australia (Hallman 1914). Moreover, Hallman pointed out that his specimen, different from the holotype, was devoid of stout, central tubes, although it occurs with the examined material from Mozambique. The species is also known from the east coast of South Africa ( Schleyer et al. 2006).

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Haplosclerida

Family

Phloeodictyidae

Genus

Oceanapia

Loc

Oceanapia ramsayi ( Lendenfeld, 1888 )

Calcinai, Barbara, Belfiore, Giuseppe, Pica, Daniela, Torsani, Fabrizio, Palma, Marco & Cerrano, Carlo 2020
2020
Loc

Rhizochalina ramsayi

Lendenfeld 1888: 188
1888