Corvospongilla seckti BONETTO AND EZCURRA DE DRAGO (1966)

Tavares-Frigo, Maria da Conceição, Volkmer-Ribeiro, Cecília, Oliveira, Ana Elenice Zanini de & Machado, Vanessa de Souza, 2015, Freshwater sponges from the Pampa Biome, Brazil, with description of a new species of Oncosclera, Neotropical Biology and Conservation 10 (3), pp. 110-122: 113-114

publication ID

http://doi.org/ 10.4013/nbc.2015.103.01

publication LSID

lsid:zoobank.org:pub:5B2DB2C1-A705-4EAE-BC6C-8B48EC6A0CA1

persistent identifier

http://treatment.plazi.org/id/195A0212-CA4E-FFE5-FBE3-C05FFE64FC23

treatment provided by

Plazi

scientific name

Corvospongilla seckti BONETTO AND EZCURRA DE DRAGO (1966)
status

 

Corvospongilla seckti BONETTO AND EZCURRA DE DRAGO (1966) 

( Figures 2BView Figure 2; 3BView Figure 3)

Corvospongilla seckti Bonetto and Ezcurra De Drago (1966):133;  (1967); De Rosa-Barbosa 1988:116- 122; Ezcurra de Drago and Bonetto (1969):366; Tavares et al. 2003:177.

Examined material: BRAZIL, Rio Grande do Sul: Alegrete, EPA of Ibirapuitã, Ibirapuitã River, Estância Sá Brito , 23.III.2011, M.C. Tavares-Frigo and M. Pairet Jr. leg., MCN-POR 8847;  27.III.2012, MCN- POR 8912; 05.VI.2012, MCN-POR 8931; 20.XI.2012, MCN-POR 8940; 22.I.2013, M.C. Tavares-Frigo, A.E.Z. Oliveira and M. Pairet Jr. leg., MCN- POR 8944.

The sponge only occurred in one station ( Table 1), situated at the point furthest downstream in the EPA and in deeper locations with no access by foot. It formed crusts on loose stones lying on the flat rocky bottom of the Ibirapuitã River, as well as in rocky pans almost 1m deep, which were sheltered from the current. Due to the greater depth both of the bed and the craters, the sponge occurred in shaded environments. The crusts have a smooth and delicate but compact consistency, with irregular shapes and variable thickness, not exceeding a few centimetres, with brownish to slightly yellowish colouring ( Figure 2BView Figure 2). Gemmules were present but not conspicuous. The findings indicate occurrence regardless of seasonality. The spicule set corresponds to the original description of the species (Bonetto and Ezcurra de Drago, 1966) ( Figure 3BView Figure 3).

Remarks: The records of C. seckti  represent a continuous distribution from the North (Volkmer-Ribeiro and Tavares, 1993) to the South of Brazil and Argentine waters. The record of C. seckti  in the Ibirapuitã River is the second for the Uruguay basin in the State of Rio Grande do Sul, the first being made by De Rosa-Barbosa ( 1984, 1988) in the Ibicuí Mirim River. In Rio Grande do Sul State, the species is abundant in the Jacuí River Basin (De Rosa-Barbosa, 1984).

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Haplosclerida

Family

Spongillidae

Genus

Corvospongilla

Loc

Corvospongilla seckti BONETTO AND EZCURRA DE DRAGO (1966)

Tavares-Frigo, Maria da Conceição, Volkmer-Ribeiro, Cecília, Oliveira, Ana Elenice Zanini de & Machado, Vanessa de Souza 2015
2015
Loc

Corvospongilla seckti Bonetto and Ezcurra De Drago (1966) :133;

Annandale 1911
1911