Oncosclera navicella ( Carter, 1881 )

Nicacio, Gilberto & Pinheiro, Ulisses, 2015, Biodiversity of freshwater sponges (Porifera: Spongillina) from northeast Brazil: new species and notes on systematics, Zootaxa 3981 (2), pp. 220-240: 223-224

publication ID

http://dx.doi.org/10.11646/zootaxa.3981.2.4

publication LSID

lsid:zoobank.org:pub:81B9E14F-DCC5-47C4-8BB1-637D80C01ECA

persistent identifier

http://treatment.plazi.org/id/0381878F-FFFB-9917-FF08-FD197633E2B9

treatment provided by

Plazi

scientific name

Oncosclera navicella ( Carter, 1881 )
status

 

Oncosclera navicella ( Carter, 1881) 

( Figure 3View FIGURE 3)

Spongilla navicella, Bonetto & Ezcurra 1964: 247  , Bonetto & Ezcurra de Drago 1970: 45. For other synonyms see Muricy et al. (2011).

Material studied. UFPEPOR 1117 (in part), 1118 (in part), 1133 (in part), 1134 (in part), São Francisco River (III), Usina Hidrelétrica Luiz Gonzaga, Petrolândia, Pernambuco, Brazil, 09°08' 37.1 "S 38 ° 17 ' 48.9 "W, coll. E.L.R. Lima, 19.v. 2010.

General morphology. Encrusting sponge, circular, beige in colour ( Fig. 3View FIGURE 3 a). Surface hispid. Spicules. Megascleres (204–360 / 12–21 µm) straight to slightly curved smooth oxeas ( Fig. 3View FIGURE 3 b). Microscleres absent. Gemmuloscleres microspined oxeas (63–141 / 12–15 µm), stout, curved, boomerang-shaped ( Fig. 3View FIGURE 3 c). Gemmules are hemispherical raging 432–480 µm in diamenter; gemmuloscleres are embedded tangentially.

Distribution. Brazil ( Muricy et al. 2011); Argentina, Uruguay and Venezuela ( Bonetto & Ezcurra 1964, Ezcurra de Drago & Bonetto 1969, Tavares & Volkmer-Ribeiro 1997).

Remarks. Records of Oncosclera navicella  have been made from wide-ranging localities in South America, especially in Brazil where this species is widespread in all regions. The specimens investigated here have remarkable differences in range of dimension of megascleres when we compared those with previous studies ( Volkmer-Ribeiro 1970). This has already been observed in Amazon specimens with minute size, which has been described with smaller megascleres in comparison with largest specimens collected in Paraná River, south Brazil ( Tavares & Volkmer-Ribeiro 1997).

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Haplosclerida

Family

Potamolepidae

Genus

Oncosclera

Loc

Oncosclera navicella ( Carter, 1881 )

Nicacio, Gilberto & Pinheiro, Ulisses 2015
2015
Loc

Spongilla navicella

Drago 1970: 45
Bonetto 1964: 247
1970