Porifera taxon details
Psammocinia beresfordae Cook & Bergquist, 1996
|Parent|| ||Psammocinia Lendenfeld, 1889|
original description Cook, S. De C.; Bergquist, P.R. 1996. New species of dictyoceratid sponges (Porifera: Demospongiae: Dictyoceratida) from New Zealand. New Zealand Journal of Marine and Freshwater Research 30: 19-34. [details]|
additional source Kelly, M.; Edwards, A.R.; Wilkinson, M.R.; Alvarez, B.; Cook, S. de C.; Bergquist, P.R.; Buckeridge, St J.; Campbell, H.J.; Reiswig, H.M.; Valentine, C.; Vacelet, J. (2009). Phylum Porifera: sponges, in: Gordon, D.P. (Ed.) (2009). New Zealand inventory of biodiversity: 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. pp. 23-46. [details]
additional source Cook, S. De C.; Bergquist, P.R. 1998. Revision of the genus Psammocinia (Porifera: Demospongiae: Dictyoceratida), with six new species from New Zealand. New Zealand Journal of Marine and Freshwater Research 32: 399-426. [details]
|Environment|| ||marine, |brackish, fresh, terrestrial
|Fossil range|| ||recent only|
From editor or global species database
Northeastern New Zealand
Northeastern New Zealand [details]
New Zealand Exclusive Economic Zone [details]
Holotype NMNZ Por. 433, locality New Zealand (Sail Rock, Hen & Chickens Islands, Hauraki Gulf) [details]
|Links|| ||To Encyclopedia of Life|
To GenBank (1 nucleotides; 0 proteins)
From editor or global species database
Taxonomy Originally this was named P. beresfordi, but the name was corrected as a lapsus calami in 1998 to P. beresfordae as it was meant to honour Donna Beresford. [details]
Type specimen Holotype NMNZ Por.433 ( = SDCC/NZ048),
Sail Rock. Hen & Chickens Islands, Hauraki Gulf,36°00.2'S, 174°41.8'E, 12 m, 12 March 1993. Paratype SDCC/NZ059, Sail Rock, Hen &
Chickens Islands, Hauraki Gulf, 36°00.2'S,
174°41.8'E, 30 m, 5 May 1993.
A distinctive species with a moderately low,
compact base from which extend solid, broad-based regular turrets, with terminal oscules. These may also be arranged as a series of elongated turrets, joined in a contiguous array. Depth of the exhalant canals varies but they maintain a constant diameter throughout their length and terminate abruptly. Oscules are 3-7 mm in diameter. Primary fibres are visible macroscopically, running vertically along the exhalant canals and are connected by finer secondary fibres. Other fine pores, < 1 mm in diameter, are visible in the fine pits between the surface sculpture and are irregularly scattered over
the sponge surface. The whole surface of the sponge is densely covered with very fine conules, most with a short fine protruding terminal fibre, < 0.5 mm long. Conules are < 1 mm high and are often joined together to form fine ridges. In specimens with tall turrets, the turrets stay the same diameter for most of their length, tapering to the terminal oscules over the last 20-30% of their length. The internal matrix of the sponge is finely and abundantly porous. The sponge is very firm, but still compressible. The base is compact and attached to the substratum at many points, such that most of the sponge base is not in contact with the substratum. The surface is densely armoured with a thin layer (0.2—0.5 mm) of fine sand, grit, and spicule fragments. This armouring is thicker (0.5-1 mm) around the terminal ends of the turrets. Fine grit is scattered throughout the mesohyl. Externally the sponge is light grey to very pale grey, or almost cream where living away from the light. Internally the sponge is greyish-cream, with light golden coloured fibres sometimes visible in the sponge matrix, though these may be difficult to see in freshly collected specimens. Colour unchanged in ethanol. Specimens up to 200 mm across the base are known, with turrets to 150 mm high. The holotype has basal dimensions of 90 mm x 60 mm, with turrets to 65 mm high.
Regular primary and secondary fibre skeleton. This is supplemented by dense
aggregations of fine filaments with enlarged terminal heads. Primary fibres are axially cored, i.e., there is a central core of foreign material with a clear area of surrounding spongin. Occasionally the fibre is packed with foreign material, distorting the surface of the fibre. This is particularly apparent near the surface. Secondary fibres are mainly uncored, though some larger secondary fibres may contain a small amount of axial debris. All fibres are strongly laminated. The fine filaments are arranged in dense bundles around the many fine canals which traverse the mesohyl. Primary fibres are 120 um diameter (97-175 urn), secondary fibres are 68 p diameter (50—90 um), and filaments are 6 um diameter (5—7 um).
Choanocyte chambers are small, spherical to oval and are 21 um diameter (20—25 um). There is an ectosomal layer of collagen, underlying and percolating through the surface armouring and areas of enhanced collagen deposition occur irregularly through the mesohyl.
Only two specimens of this species have been collected, however at the time of collection of NZ048, other specimens were observed and the
species could be considered common at that locality. The shallow-water specimens were under the overhangs of large boulders and ledges. The deeper specimen was also found under rocks, in a small cavity and at that depth was in deep shade. The deep specimen was similar in colour to the lower parts of the shallower sponge. Both specimens were attached to rock substrata.
This species is named in honour of Donna Louise Beresford (1966-1994).
This sponge is unlike any [details]
|Date|| action|| by|
|2005-07-10 18:05:41Z|| created|| db_admin|
|2008-04-27 13:06:08Z|| changed|| van Soest, Rob|
| || |
[Taxonomic tree] [Google] [Google scholar] [Google images]
| || ||Citation: van Soest, R. (2013). Psammocinia beresfordae Cook & Bergquist, 1996. In: Van Soest, R.W.M; Boury-Esnault, N.; Hooper, J.N.A.; Rützler, K.; de Voogd, N.J.; Alvarez de Glasby, B.; Hajdu, E.; Pisera, A.B.; Manconi, R.; Schoenberg, C.; Janussen, D.; Tabachnick, K.R., Klautau, M.; Picton, B.; Kelly, M.; Vacelet, J.; Dohrmann, M.; Cristina Díaz, M. (2013) World Porifera database. Accessed through: Van Soest, R.W.M; Boury-Esnault, N.; Hooper, J.N.A.; Rützler, K.; de Voogd, N.J.; Alvarez de Glasby, B.; Hajdu, E.; Pisera, A.B.; Manconi, R.; Schoenberg, C.; Janussen, D.; Tabachnick, K.R., Klautau, M.; Picton, B.; Kelly, M.; Vacelet, J.; Dohrmann, M.; Cristina Díaz, M. (2013) World Porifera database at http://www.marinespecies.org/porifera/porifera.php?p=taxdetails&id=165063 on 2013-12-08|
| || |