Axinella cylindrica Bertolino & Costa & Bavestrello & Pansini & Daneri 2020, sp. nov.
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2020
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| author | Bertolino, Marco Costa, Gabriele Bavestrello, Giorgio Pansini, Maurizio Daneri, Giovanni |
| author_facet | Bertolino, Marco Costa, Gabriele Bavestrello, Giorgio Pansini, Maurizio Daneri, Giovanni |
| contents | <p><b><i>Axinella cylindrica</i> Bertolino, Costa & Pansini sp. nov.</b></p><p>urn:lsid:zoobank.org:act: 21616DF2-8C48-428E-8631-C6A2553E214C</p><p>Figs 3–4; Table 4</p><p><b>Etymology</b></p><p>The new species is named after the body shape.</p><p><b>Type material</b></p><p><b>Holotype</b></p><p>CHILE – <b>Puerto Cisnes</b> • Seno Magdalena B; 44.650167° S, 72.89085° W; depth 20 m; 5–10 Aug. 2016; Marco Bertolino leg.; on a rocky cliff by scuba diving; CILE 1; MSGN 61493.</p><p><b>Paratypes</b></p><p>CHILE – <b>Puerto Cisnes</b> • 1 specimen; Seno Magdalena D; 44.614863° S, 72.958312° W; depth 18 m; 5–10 Aug. 2016; Marco Bertolino leg.; on a rocky bottom by scuba diving; CILE 37; DISTAV <b>•</b> 1 specimen; Seno Magdalena E; 44.613885° S, 72.941490° W; depth 15 m; 5–10 Aug. 2016; Marco Bertolino leg.; on a rocky cliff by scuba diving; CILE 23; DISTAV <b>•</b> 1 specimen; Seno Magdalena D; 56.616666° S, 72.716666° W; depth 20 m; 5–10 Aug. 2016; Marco Bertolino leg.; on a rocky wall by scuba diving; CILE 81; DISTAV.</p><p><b>Description</b></p><p>HABITUS. All of the specimens have a regular cylindrical shape (5–7 cm high, ca 1 cm in diameter) (Fig. 3A). Surface lightly hispid, consistence firm. Colour in life bright yellow (Fig. 3A).</p><p>SKELETON. Skeleton formed by network of thin ascending plurispicular fibres forming quadrangular meshes with abundant spongin (Fig. 3B). Choanosome differentiated in axial compressed region (Fig. 3D) and extra-axial plumoreticulate part (Fig. 3 C–D). Ectosome formed by erect spicule brushes, hispidating sponge surface, supported by terminal part of choanosomal ascending fibres (Fig. 3 C–D).</p><p>SPICULES. Megascleres: Styles smooth, straight or slightly curved, with regular, round heads (Fig. 4A), 700–(832.5)–960 μm long and 20–(25.2)–32.5 μm thick in holotype. Rhabdostyles smooth with pronounced basal bend (Fig. 4B), 240–(296.5)–435 μm long and 15–(17)–20 μm thick in holotype. Oxeas smooth, more or less folded, 197.5–(346)–425 μm long and 12.5–(18.7)–22.5 μm thick in holotype. The thinnest ones are almost straight or slightly flexuous (Fig. 4C). Measurements of spicule of all collected specimens (holotype and paratypes) are reported in Table 4.</p><p><b>Habitat</b></p><p>This species lives on a rocky cliff covered by coralline algae, at a depth between 15 and 20 m.</p><p><b>Remarks</b></p><p>We have recorded two new species of the genus <i>Axinella</i> and have therefore chosen to make a single discussion after their description.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_4330258 |
| institution | Zenodo |
| language | |
| publishDate | 2020 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Axinella cylindrica Bertolino & Costa & Bavestrello & Pansini & Daneri 2020, sp. nov. Bertolino, Marco Costa, Gabriele Bavestrello, Giorgio Pansini, Maurizio Daneri, Giovanni Biodiversity Taxonomy Animalia Porifera Demospongiae Halichondrida Axinellidae Axinella Axinella cylindrica <p><b><i>Axinella cylindrica</i> Bertolino, Costa & Pansini sp. nov.</b></p><p>urn:lsid:zoobank.org:act: 21616DF2-8C48-428E-8631-C6A2553E214C</p><p>Figs 3–4; Table 4</p><p><b>Etymology</b></p><p>The new species is named after the body shape.</p><p><b>Type material</b></p><p><b>Holotype</b></p><p>CHILE – <b>Puerto Cisnes</b> • Seno Magdalena B; 44.650167° S, 72.89085° W; depth 20 m; 5–10 Aug. 2016; Marco Bertolino leg.; on a rocky cliff by scuba diving; CILE 1; MSGN 61493.</p><p><b>Paratypes</b></p><p>CHILE – <b>Puerto Cisnes</b> • 1 specimen; Seno Magdalena D; 44.614863° S, 72.958312° W; depth 18 m; 5–10 Aug. 2016; Marco Bertolino leg.; on a rocky bottom by scuba diving; CILE 37; DISTAV <b>•</b> 1 specimen; Seno Magdalena E; 44.613885° S, 72.941490° W; depth 15 m; 5–10 Aug. 2016; Marco Bertolino leg.; on a rocky cliff by scuba diving; CILE 23; DISTAV <b>•</b> 1 specimen; Seno Magdalena D; 56.616666° S, 72.716666° W; depth 20 m; 5–10 Aug. 2016; Marco Bertolino leg.; on a rocky wall by scuba diving; CILE 81; DISTAV.</p><p><b>Description</b></p><p>HABITUS. All of the specimens have a regular cylindrical shape (5–7 cm high, ca 1 cm in diameter) (Fig. 3A). Surface lightly hispid, consistence firm. Colour in life bright yellow (Fig. 3A).</p><p>SKELETON. Skeleton formed by network of thin ascending plurispicular fibres forming quadrangular meshes with abundant spongin (Fig. 3B). Choanosome differentiated in axial compressed region (Fig. 3D) and extra-axial plumoreticulate part (Fig. 3 C–D). Ectosome formed by erect spicule brushes, hispidating sponge surface, supported by terminal part of choanosomal ascending fibres (Fig. 3 C–D).</p><p>SPICULES. Megascleres: Styles smooth, straight or slightly curved, with regular, round heads (Fig. 4A), 700–(832.5)–960 μm long and 20–(25.2)–32.5 μm thick in holotype. Rhabdostyles smooth with pronounced basal bend (Fig. 4B), 240–(296.5)–435 μm long and 15–(17)–20 μm thick in holotype. Oxeas smooth, more or less folded, 197.5–(346)–425 μm long and 12.5–(18.7)–22.5 μm thick in holotype. The thinnest ones are almost straight or slightly flexuous (Fig. 4C). Measurements of spicule of all collected specimens (holotype and paratypes) are reported in Table 4.</p><p><b>Habitat</b></p><p>This species lives on a rocky cliff covered by coralline algae, at a depth between 15 and 20 m.</p><p><b>Remarks</b></p><p>We have recorded two new species of the genus <i>Axinella</i> and have therefore chosen to make a single discussion after their description.</p> |
| title | Axinella cylindrica Bertolino & Costa & Bavestrello & Pansini & Daneri 2020, sp. nov. |
| topic | Biodiversity Taxonomy Animalia Porifera Demospongiae Halichondrida Axinellidae Axinella Axinella cylindrica |
| url | https://doi.org/10.5281/zenodo.4330258 |