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Porifera name detailsIsodictya delicata var. megachela Burton, 1934
168451 (urn:lsid:marinespecies.org:taxname:168451)
unaccepted (status change)
Variety
marine,
recent only
Burton, M. (1934). Sponges. Pp. 1-58, pls I-VIII. <em>In: Further Zoological Results of the Swedish Antarctic Expedition 1901-03 under the Direction of Dr. Otto Nordenskjöld.</em> 3 (2). (Norstedt & Söner: Stockholm).
page(s): 20 [details] Available for editors  [request]
Type locality contained in Antarctic Peninsula
type locality contained in Antarctic Peninsula [details]
Status The variety was described by Burton from Seymour Island, Grahamland, Antarctica, 64.3333°S 56.6333°W, depth 150 m...
Status The variety was described by Burton from Seymour Island, Grahamland, Antarctica, 64.3333°S 56.6333°W, depth 150 m (holotype presumably in the Stockholm Museum, with additional type material BMNH 1933.3.17.7, and three slides). The variety was erected on the basis of differences with the typical variety described by Thiele (1905: 435 as Desmacidon delicata, from Admirality Sound, Chile, 54.31°S 69.5°W, depth 10 m, holotype ZMB 3289) in shape (flabellate vs. finger-shaped in the typical variety) and spicule sizes (chelae 70 μm vs. 20 μm in the typical variety). According to Ríos (2006) and Ríos et al. (2020), there are also sigmas in the var. megachela, not reported in the typical variety. Since both varieties are of sympatric occurrence in nearby Antarctic localities, infraspecific status is not warranted in this case. Koltun (1964: 41) suggested the varieties were subspecies, but the argument of sympatry applies a fortriori for species level. The differences appear sufficiently large. Van Soest (2024: 70) proposed to elevate the variety to a distinct species Isodictya megachela Burton, 1934. [details]
de Voogd, N.J.; Alvarez, B.; Boury-Esnault, N.; Cárdenas, P.; Díaz, M.-C.; Dohrmann, M.; Downey, R.; Goodwin, C.; Hajdu, E.; Hooper, J.N.A.; Kelly, M.; Klautau, M.; Lim, S.C.; Manconi, R.; Morrow, C.; Pinheiro, U.; Pisera, A.B.; Ríos, P.; Rützler, K.; Schönberg, C.; Turner, T.; Vacelet, J.; van Soest, R.W.M.; Xavier, J. (2024). World Porifera Database. Isodictya delicata var. megachela Burton, 1934. Accessed at: https://www.marinespecies.org/porifera/porifera.php?p=taxdetails&id=168451 on 2024-08-06
Date action by 2005-07-10 18:05:41Z created db_admin
original description
Burton, M. (1934). Sponges. Pp. 1-58, pls I-VIII. <em>In: Further Zoological Results of the Swedish Antarctic Expedition 1901-03 under the Direction of Dr. Otto Nordenskjöld.</em> 3 (2). (Norstedt & Söner: Stockholm).
page(s): 20 [details] Available for editors [request] basis of record Clarke, Andrew; Johnston, Nadine M. (2003). Antarctic marine benthic diversity. <em>Oceanography and Marine Biology: an Annual Review.</em> 41: 47-114. (look up in IMIS) [details] Available for editors [request] basis of record Van Soest, R.W.M. (2024). Correcting sponge names: nomenclatural update of lower taxa level Porifera. <em>Zootaxa.</em> 5398(1): 1-122., available online at https://doi.org/10.11646/zootaxa.5398.1.1 page(s): 70 [details] Available for editors [request] additional source Desqueyroux, R. (1975). Esponjas (Porifera) de la region antartica chilena. <em>Cahiers de Biologie Marine.</em> 16 (1): 47-82. page(s): 60-61 [details] Available for editors [request] additional source Koltun, V.M. (1964). Sponges of the Antarctic. 1 Tetraxonida and Cornacuspongida. Pp. 6-133, 443-448. <em>In: Pavlovskii, E.P., Andriyashev,A.P. & Ushakov, P.V. (Eds), Biological Reports of the Soviet Antarctic Expedition (1955-1958).</em> Akademya Nauk SSSR [English translation,1966, Israel Program for Scientific Translation]. page(s): 41 Plate VIII, 13-16 [details] Available for editors [request] additional source Ríos, P.; Riesgo, A.; Taboada, S.; Cristobo, J. (2020). A new species of <i>Isodictya</i> (Porifera: Poecilosclerida) from the Southern Ocean. <em>Polar Biology.</em> 43(5), 523-533., available online at https://doi.org/10.1007/s00300-020-02654-x [details] Available for editors [request] additional source Ríos, P. (2006). Esponjas del Orden Poecilosclerida de las campañas españolas de bentos antártico. <em>Ph.D. Thesis, Universidad de Santiago de Compostela- Spain.</em> 552 pp. [In Spanish]. page(s): 463 [details] Available for editors [request]  Present Inaccurate Introduced: alien Containing type locality
Syntype SMNH unknown number, geounit Antarctic Peninsula [details]
From editor or global species database
Status The variety was described by Burton from Seymour Island, Grahamland, Antarctica, 64.3333°S 56.6333°W, depth 150 m (holotype presumably in the Stockholm Museum, with additional type material BMNH 1933.3.17.7, and three slides). The variety was erected on the basis of differences with the typical variety described by Thiele (1905: 435 as Desmacidon delicata, from Admirality Sound, Chile, 54.31°S 69.5°W, depth 10 m, holotype ZMB 3289) in shape (flabellate vs. finger-shaped in the typical variety) and spicule sizes (chelae 70 μm vs. 20 μm in the typical variety). According to Ríos (2006) and Ríos et al. (2020), there are also sigmas in the var. megachela, not reported in the typical variety. Since both varieties are of sympatric occurrence in nearby Antarctic localities, infraspecific status is not warranted in this case. Koltun (1964: 41) suggested the varieties were subspecies, but the argument of sympatry applies a fortriori for species level. The differences appear sufficiently large. Van Soest (2024: 70) proposed to elevate the variety to a distinct species Isodictya megachela Burton, 1934. [details]
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