MarBEF Data System


Porifera name details

Topsentia pachastrelloides var. microxata Topsent, 1928

410326  (urn:lsid:marinespecies.org:taxname:410326)

  1. Biota
  2. Animalia (Kingdom)
  3. Porifera (Phylum)
  4. Demospongiae (Class)
  5. Heteroscleromorpha (Subclass)
  6. Suberitida (Order)
  7. Halichondriidae (Family)
  8. Topsentia (Genus)
  9. Topsentia pachastrelloides (Species)
  10. Topsentia pachastrelloides var. microxata (Variety)
 unaccepted (junior synonym)
Variety
marine, brackish, fresh, terrestrial
recent only
Topsent, E. (1928). Spongiaires de l'Atlantique et de la Méditerranée provenant des croisières du Prince Albert ler de Monaco. <em>Résultats des campagnes scientifiques accomplies par le Prince Albert I. Monaco.</em> 74:1-376, pls I-XI. [details] OpenAccess publication
Status The variety was described by Topsent from Prince Albert 1er Monaco Cruises Stat. 899, Azores, 37.95°N 29.233°W, depth 200...  
Status The variety was described by Topsent from Prince Albert 1er Monaco Cruises Stat. 899, Azores, 37.95°N 29.233°W, depth 200 m (type material in the MOM and slides in MNHN). Differences with the typical variety described by Topsent (1892a: 66, pl. IX fig. 3, as Halichondria, from Prince Albert 1er Monaco Cruises Stat. 229, Azores, 38.6667°N 30.5775°W, depth 736 m, type material in MOM and slides in MNHN) are the small size of the smallest oxeas (40–55 vs. 150 μm). Large oxeas are smaller (up to 960 x 25 vs.1400 x 46 μm) than those of the typical variety. These differences may seem sufficient for distinguishing valid taxa, but additional records by other authors and Topsent himself, e.g. Topsent (1928: 163) mention specimens with the smallest oxeas up to 90 μm and the largest up to 1005 x 40–50 μm. He also discussed specimens identified as Topsentia glabra (Topsent, 1898: 234 as Anisoxya), which he observed to overlap in spicule sizes with smaller spicule bearing T. pachastrelloides. In view of the uncertainties admitted by Topsent, and the sympatric occurrence of the varieties Van Soest (2024: 90) proposed to merge these varieties as a single species Topsentia pachastrelloides (Topsent, 1892) until improved evidence has been obtained for a specific distinctness of the varieties. [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. Topsentia pachastrelloides var. microxata Topsent, 1928. Accessed at: https://www.marinespecies.org/porifera/porifera.php?p=taxdetails&id=410326 on 2024-11-22
Date
action
by
2009-08-03 06:55:15Z
created
van Soest, Rob W.M.
2024-01-29 12:04:02Z
changed
van Soest, Rob W.M.

original description Topsent, E. (1928). Spongiaires de l'Atlantique et de la Méditerranée provenant des croisières du Prince Albert ler de Monaco. <em>Résultats des campagnes scientifiques accomplies par le Prince Albert I. Monaco.</em> 74:1-376, pls I-XI. [details] OpenAccess publication

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): 90 [details] Available for editors  PDF available [request]
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Unknown type MNHN DT 907, geounit Azores [details]
From editor or global species database
Status The variety was described by Topsent from Prince Albert 1er Monaco Cruises Stat. 899, Azores, 37.95°N 29.233°W, depth 200 m (type material in the MOM and slides in MNHN). Differences with the typical variety described by Topsent (1892a: 66, pl. IX fig. 3, as Halichondria, from Prince Albert 1er Monaco Cruises Stat. 229, Azores, 38.6667°N 30.5775°W, depth 736 m, type material in MOM and slides in MNHN) are the small size of the smallest oxeas (40–55 vs. 150 μm). Large oxeas are smaller (up to 960 x 25 vs.1400 x 46 μm) than those of the typical variety. These differences may seem sufficient for distinguishing valid taxa, but additional records by other authors and Topsent himself, e.g. Topsent (1928: 163) mention specimens with the smallest oxeas up to 90 μm and the largest up to 1005 x 40–50 μm. He also discussed specimens identified as Topsentia glabra (Topsent, 1898: 234 as Anisoxya), which he observed to overlap in spicule sizes with smaller spicule bearing T. pachastrelloides. In view of the uncertainties admitted by Topsent, and the sympatric occurrence of the varieties Van Soest (2024: 90) proposed to merge these varieties as a single species Topsentia pachastrelloides (Topsent, 1892) until improved evidence has been obtained for a specific distinctness of the varieties. [details]
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