Clathrina tetractina, Klautau & Borojevic, 2001

Klautau, Michelle & Valentine, Clare, 2003, Revision of the genus Clathrina (Porifera, Calcarea), Zoological Journal of the Linnean Society 139 (1), pp. 1-62 : 42-43

publication ID

https://doi.org/ 10.1046/j.0024-4082.2003.00063.x

DOI

https://doi.org/10.5281/zenodo.5490056

persistent identifier

https://treatment.plazi.org/id/03D5484C-D435-C377-FF43-FBE3FEFAFC0D

treatment provided by

Carolina

scientific name

Clathrina tetractina
status

 

CLATHRINA TETRACTINA View in CoL KLAUTAU &

BOROJEVIC, 2001

Type locality: Arraial do Cabo , Rio de Janeiro, Brazil .

Type: BMNH 1999.9 .16.33 (holotype /alcohol). Arraial do Cabo (Pedra Vermelha), Rio de Janeiro, Brazil. Collected by G. Muricy (14 June 1987) .

Colour: Cormus is white in life and when preserved.

Description: Cormus formed of large, irregular and loosely anastomosed tubes. Large superficial tubes collect the ex-current water, and then converge on a few apical oscula.

The wall of the tubes varies from 25 Mm to 50 Mm in thickness. The skeleton has no special organization, comprising mainly tetractines ( Fig. 33A View Figure 33 ), although a few triactines can also be found. Spicules are equiradiate and equiangular. Actines are conical, with sharp tips, and at the distal part they are slightly undulated. The apical actine ( Fig. 33B View Figure 33 ) of the tetractines is very thin even at the base, and resembles the apical actine of the tetractines of C. contorta Minchin, 1905 . It is straight, cylindrical, sharp, long and smooth and is projected into the tubes. Only one specimen of this species was found. Its habitat was sciaphilous.

Remarks: Although there is a similarity to the tetractines of C. contorta , C. tetractina has no triactines or diactines. Moreover, C. contorta is a species from the Mediterranean Sea.

CLATHRINA WISTARIENSIS WÖRHEIDE & HOOPER, 1999 View in CoL

Type locality: Great Barrier Reef.

Type: QMG 313663 (holotype /alcohol). South side of Wistari Reef, 23∞29.4¢S, 151∞52.8¢E, 18 m depth. Collected by G. Wörheide (7 July 1998).

Colour: The colour of the holotype alive was white ( Wörheide & Hooper, 1999), but it became light yellow when preserved.

Description: This sponge is delicate and the holotype is fragmented. It is difficult to recognize the organization of the cormus in this specimen now, but by observing the photograph of the holotype, it was possible to confirm that it comprises large, irregular and loosely anastomosed tubes. No water-collecting tubes were observed ( Fig. 34A View Figure 34 ). The skeleton has no special organization, comprising equiangular and equiradiate triactines ( Fig. 34B View Figure 34 ). Actines are cylindrical, with blunt tips. Young triactines can also be found and their actines are more conical. The mesohyl is full of porocytes with brown granules.

In the original description, the micrometry of the spicules is:

Kingdom

Animalia

Phylum

Porifera

Class

Calcarea

Order

Clathrinida

Family

Clathrinidae

Genus

Clathrina

Loc

Clathrina tetractina

Klautau, Michelle & Valentine, Clare 2003
2003
Loc

CLATHRINA WISTARIENSIS WÖRHEIDE & HOOPER, 1999

Worheide & Hooper 1999
1999
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