Myxilla (Burtonanchora) lissostyla Burton, 1938

Schejter, Laura, Cristobo, Javier & Ríos, Pilar, 2024, New records of demosponges (Porifera) from the South Orkney Islands (Antarctica) with a checklist for the region, Zootaxa 5403 (4), pp. 401-430 : 415-416

publication ID	https://doi.org/10.11646/zootaxa.5403.4.1
publication LSID	lsid:zoobank.org:pub:C2EAB19C-07CB-4013-9C93-D25259EA2673
DOI	https://doi.org/10.5281/zenodo.10562172
persistent identifier	https://treatment.plazi.org/id/03D687FD-C505-8256-FF45-F9CC6EE2BE85
treatment provided by	Plazi (2024-01-24 14:04:37, last updated 2024-11-30 02:48:56)
scientific name	Myxilla (Burtonanchora) lissostyla Burton, 1938
status

Treatment

Myxilla (Burtonanchora) lissostyla Burton, 1938 View in CoL

( Figure 7b–f View FIGURE 7 )

Restricted synonymy: Myxilla lissostyla Burton, 1938 .

Material examined: 1 specimen collected at station 7 ( SOI; 61°00'S, 46°44'W; 609 m; 3/3/2014; MACN-In 44394; IEO-CSIC Col.) GoogleMaps .

Description: Erect and cavernous sponge with a rough surface, beige in colour, attached to a dead mollusc shell ( Fig. 7b View FIGURE 7 ). Skeleton of axes of plurispicular megascleres, connected by perpendicular secondary axes. Megascleres are styles of 720–900 µm by 30 µm and tylotes with spined ends of 325–340 µm. Microscleres are anchorate chelae with 3 or 4 short, pointed teeth, 75–100 µm. Developing anchorate chelae were also observed ( Fig. 7c–f View FIGURE 7 ).

Remarks: This species was previously recorded from Antarctic waters by Burton (1938), Ríos et al. (2004), Ríos & Cristobo (2007b), Desqueyroux (1975), Koltun (1964) and Barthel et al. (1990). This finding represents the first record for the SOI region.

References

Barthel, D., Tendal, O. S. & Panzer, K. (1990) Ecology and taxonomy of sponges in the eastern Weddell Sea shelf and slope communities. Reports on Polar Research, 68, 120 - 130.

Burton, M. (1938) Non-Calcareous sponges. Scientific Reports of the Australasian Antarctic Expedition, 1911 - 1914, C (Zoology and Botany), 9 (3), 5 - 22.

Desqueyroux, R. (1975) Esponjas (Porifera) de la region antartica chilena. Cahiers de Biologie Marine, 16 (1), 47 - 82.

Koltun, V. M. (1964) Sponges of the Antarctic. 1 Tetraxonida and Cornacuspongida. In: Pavlovskii, E. P., Andriyashev, A. P. & Ushakov, P. V. (Eds.), Biological Reports of the Soviet Antarctic Expedition (1955 - 1958). Akademiya Nauk SSSR, Moscow- Leningrad, pp. 6 - 133 + 443 - 448.

Rios, P., Cristobo, F. J. & Urgorri, V. (2004) Poecilosclerida (Porifera, Demospongiae) collected by the Spanish Antarctic expedition BENTART- 94. Cahiers de Biologie Marine, 45, 97 - 119.

Rios, P. & Cristobo, J. (2007 b) Sponges of genus Myxilla Schmidt, 1862, collected in Antarctic waters by Spanish Antarctic expeditions. In: Custodio, M. R., Lobo-Hajdu, G., Hajdu, E. & Muricy, G. (Eds.), Porifera Research: Biodiversity, Innovation and Sustainability. Museu Nacional, Rio de Janeiro, pp 525 - 546.

Figures

FIGURE 7. a. Myxilla (Myxilla) mollis, general morphology, scale: 3 cm; b–f. Myxilla (B.) lissostyla, b. general morphology, scale: 2 cm; c. chela, scale: 50 µm; d. chela, scale: 30 µm; e. tylote, scale: 55 µm; f. style, scale: 110 µm; g–k. Myxodoryx hanitschi, g. general morphology, scale: 2 cm; h. style, scale: 80 µm; i. tornote, scale: 45 µm; j. acanthostyle, scale: 65 µm; k. acanthostyle, scale: 25 µm.