Clathria (Clathria) Schmidt, 1862

Bertolino, Marco, Costa, Gabriele, Reboa, Anna, Bavestrello, Giorgio, Pansini, Maurizio, Betti, Federico, Bo, Marzia & Daneri, Giovanni, 2019, The sponge fauna of the Seno Magdalena and Puyuhuapi Fjord (Chile), with a description of two new species, Zootaxa 4623 (2), pp. 306-320 : 318

publication ID

https://doi.org/ 10.11646/zootaxa.4623.2.5

publication LSID

lsid:zoobank.org:pub:7A20397D-A26E-4B7D-80DF-6B78AE999F6C

DOI

https://doi.org/10.5281/zenodo.5611475

persistent identifier

https://treatment.plazi.org/id/5849EC13-FFDF-D84B-C3FA-FE9095DA2D87

treatment provided by

Plazi

scientific name

Clathria (Clathria) Schmidt, 1862
status

 

Subgenus Clathria (Clathria) Schmidt, 1862 View in CoL

Clathria (Clathria) microxa Desqueyroux, 1972 View in CoL

( Fig. 6 View FIGURE 6 )

Material. CILE 80, Seno Magdalena E (44.613885°S 72.941490°W), Puerto Cisnes (Chile), depth 25 m, on a vertical cliff, 2014 GoogleMaps .

Description. Small (4 cm 2), massive sponge, 2 cm thick. Surface rugose, with slightly elevated, round oscules. The colour in life is dark purple ( Fig. 6A View FIGURE 6 ). The sponge is soft and fragile.

Skeleton. The skeleton shows a typical plumo-reticulate arrangement present in Clathria (Clathria) .

Spicules. Megascleres: choanosomal principal styles, straight or slightly curved, with smooth shaft and microspinate heads, 326.4 (376.9) 520.2 x 16.4 (18.6) 20.5 µm ( Fig. 6B View FIGURE 6 ); subectosomal auxiliary subtylostyles, straight or sinuous, spines restricted to the heads, 244.8 (402.9) 561 x 5.7 (9) 12.3 µm ( Fig. 6C View FIGURE 6 ); echinating acanthostyles, straight, with spines along the entire spicule length, spines of the head may be bifid or trifid ( Fig. 6D View FIGURE 6 ), 119 (144.5) 170 x 8.5 µm. Microscleres: toxas variously curved in the middle, or even straight ( Fig. 6E View FIGURE 6 ), 82 (216.9) 369 µm; straight microxeas, often showing a biconical shape ( Fig. 6F View FIGURE 6 ), 36.9 (42) 45.1 x 2.6 (2.7) 5.2 µm.

Ecology. This species was first recorded at 50–90 m depth ( Desqueyroux, 1972) and then found as epibiotic on mollusc shells ( Zygochlamys patagonica and Fusitriton magellanicus ) between 92 and 100 m depth ( Schejter et al., 2006, 2011). Our specimen lived on a vertical cliff at 25 m depth.

Distribution. Corcovado Gulf ( Chile) ( Desqueyroux, 1972), Argentina ( Schejter et al., 2006, 2011) and Puyuhuapi Fjord (Queulat Fjord, Chilean Patagonia).

Remarks. Desqueyroux (1972) observed a single type of angulate toxas in the holotype. Also, Schejter et al. (2006) recorded a single type of long, and multiply bent toxa. Since we observed toxas of different shapes, even if they cannot be divided into categories, the spicule variability of the species increases. Furthermore, due to more detailed SEM photos, we could detect the microspination of the heads of styles and subtylostyles.

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Poecilosclerida

Family

Microcionidae

Genus

Clathria

Loc

Clathria (Clathria) Schmidt, 1862

Bertolino, Marco, Costa, Gabriele, Reboa, Anna, Bavestrello, Giorgio, Pansini, Maurizio, Betti, Federico, Bo, Marzia & Daneri, Giovanni 2019
2019
Loc

Clathria (Clathria) microxa

Desqueyroux 1972
1972
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