Corvospongilla seckti BONETTO AND EZCURRA DE DRAGO 1966
Creators: name: Tavares-Frigo, Maria da Conceição
name: Volkmer-Ribeiro, Cecília
name: Oliveira, Ana Elenice Zanini de
name: Machado, Vanessa de Souza
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Haplosclerida
Spongillidae
Corvospongilla
Corvospongilla seckti

description: <i>Corvospongilla seckti</i> BONETTO AND EZCURRA DE DRAGO (1966) (Figures 2B; 3B) <i>Corvospongilla seckti</i> Bonetto and Ezcurra De Drago (1966):133; (1967); De Rosa-Barbosa 1988:116- 122; Ezcurra de Drago and Bonetto (1969):366; Tavares <i>et al</i>. 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. <i>leg</i>., 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. <i>leg</i>., 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 2B). 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 3B). <b>Remarks:</b> The records of <i>C. seckti</i> represent a continuous distribution from the North (Volkmer-Ribeiro and Tavares, 1993) to the South of Brazil and Argentine waters. The record of C. <i>seckti</i> 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).
description: Published as part of <i>Tavares-Frigo, Maria da Conceição, Volkmer-Ribeiro, Cecília, Oliveira, Ana Elenice Zanini de &amp; Machado, Vanessa de Souza, 2015, Freshwater sponges from the Pampa Biome, Brazil, with description of a new species of Oncosclera, pp. 110-122 in Neotropical Biology and Conservation 10 (3)</i> on pages 113-114, DOI: 10.4013/nbc.2015.103.01, http://zenodo.org/record/2640726
description: {"references": ["BONETTO, A. A.; EZCURRA DE DRAGO, I. 1966. Nuevos aportes al conocimiento de las esponjas Argentinas. Physis, 26 (71): 129 - 140.", "DE ROSA-BARBOSA, R. 1988. Corvospongilla volkmeri sp. n e registro de Corvospongilla seckti Bonetto &amp; Ezcurra de Drago, 1966 no Brasil (Porifera, Spongillidae). Iheringia, Serie Zoologia, 67: 109 - 122.", "EZCURRA DE DRAGO, I.; BONETTO, A. A. 1969. Algunas caracteristicas del bentos de los saltos del rio Uruguay, con especial referencia a la ecologia de los Poriferos. Physis, 28 (77): 359 - 369.", "DE ROSA-BARBOSA, R. 1984. Reavaliacao da fauna espongologica continental do Estado do Rio Grande do Sul, Brasil, frente a novas coletas. Iheringia, Serie Zoologia, 64: 127 - 148."]}