Clathrina luteoculcitella Wörheide & Hooper, 1999

Van, Rob W. M. & De, Nicole J., 2018, Calcareous sponges of the Western Indian Ocean and Red Sea, Zootaxa 4426 (1), pp. 1-160: 42-43

publication ID

https://doi.org/10.11646/zootaxa.4426.1.1

publication LSID

lsid:zoobank.org:pub:18929E20-5296-4458-8A8A-4F5316A290FD

persistent identifier

http://treatment.plazi.org/id/386CC616-DC5B-A51B-FF67-899EFE23FE6C

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Plazi

scientific name

Clathrina luteoculcitella Wörheide & Hooper, 1999
status

 

Clathrina luteoculcitella Wörheide & Hooper, 1999 

Figures 18a–f View Figure , 19a–e View Figure , 20a–e View Figure

Clathrina luteoculcitella Wörheide & Hooper, 1999: 868  , figs 5A–E

Clathrina aff. luteoculcitella  ; Van Soest & De Voogd 2015: 13, figs 6a–d.

Material examined. RMNHAbout RMNH Por. 11623, Mauritius, Rodrigues, Passe Baladirou, 19.6683°S 63.46307°E, depth 12 m, scuba, coll. N.J. de Voogd, field nr. ROG024, 16 October 2016; RMNHAbout RMNH Por. 11641, Mauritius, Rodrigues, Mourouk Ebony, Castel Rock, 19.76203°S 63.46273°E, depth 10 m, scuba, coll. N.J. de Voogd, field nr. ROG044, 17 October 2016; RMNHAbout RMNH Por. 11659, Mauritius, Rodrigues, Mourouk Ebony, Castel Rock, 19.76203°S 63.46273°E, depth 10 m, scuba, coll. N.J. de Voogd, field nr. ROG063, 17 October 2016; RMNHAbout RMNH Por. 11686, Mauritius, Rodrigues, Passe Baladirou, 19.6683°S 63.46307°E, depth 12 m, scuba, coll. N.J. de Voogd, field nr. ROG094, 18 October 2016; RMNHAbout RMNH Por. 11687, Mauritius, Rodrigues, Mourouk Ebony, Castel Rock, 19.7648°S 63.4626°E, depth 12 m, scuba, coll. N.J. de Voogd, field nr. ROG101, 19 October 2016; RMNHAbout RMNH Por. 11703, Mauritius, Rodrigues, Passe Saint François, 19.69893°S 63.5005°E, depth 15 m, scuba, coll. N.J. de Voogd, field nr. ROG117, 20 October 2016; ZMAAbout ZMA Por. 17438, Oman, Muscat, Ras al Khayran, on rocks, 23.75°N 58.75°E, (depth not recorded, but shallow), scuba, coll. O. Eerland, field nr. 02/IO/ DEC08 /OE/006, 6 December 2002; ZMAAbout ZMA Por. 10223b, Seychelles, Mahé, NE coast, Cap Maçons and Anse de Forbans, 4.7667°S 55.5167°E, depth 0–6 m, snorkeling, coll. R.W.M. van Soest, field nr. NIOP-E stat. 612, 12 December 1992.

Description. Cushion-shaped masses of tightly anastomed tubuli ( Figs 18a–e View Figure ). Tubuli thin, 0.2–0.4 mm in diameter. Numerous prominent oscules much wider than individual tubuli are visible on the upper side on in situ images (e.g. Fig. 18a View Figure ). Color beige or orange-brown in situ, dirty white or pale beige ‘on deck’, ( Fig. 18f View Figure ), pale beige in preserved condition. Consistency soft. Sizes up to 6 x 3 x 3 cm, individual tubuli 0.2–0.3 mm in diameter. The specimen from Oman had white live color, the Seychelles specimen was of unknown life color; both are pale beige ( Fig. 20a View Figure ) in preserved condition.

Aquiferous system. Asconoid.

Skeleton. ( Figs 19a–b View Figure , 20b,d View Figure ) Thin tubules with the walls single-spicule layered, not very dense. Spaces between the tubuli small, 0.1–0.5 µm.

Spicules. ( Figs 19c–e View Figure , 20c,e View Figure ) Triactines equiangular equiradiate, with small conical actines; some broken trichoxeas ( Fig. 19d View Figure ).

Measurements of the actines of the triactines in three of the specimens from Rodrigues show a very limited variation:

RMNH Por. 11641: 69– 99 x 6.5–9.5 µm

RMNH Por. 11659: 72– 94 x 6–9 µm

RMNH Por. 11687: 74– 93 x 6 –9.5 µm

Overall, sizes are 69– 99 x 6 –9.5 µm (n= 50).

Few broken trichoxeas are found in one of the specimens.

Triactines of the Oman specimen ( Figs 20c View Figure ) are slightly larger, 72– 95.6 –108 x 6.5– 9.4 –12 µm (n=25); those of the Seychelles specimen ( Fig. 20e View Figure ) are similar to the Rodrigues specimens: 71– 84 – 96 x 7 – 8.6 –9.5 µm (n= 25).

Distribution and ecology. Rodrigues, Oman, Australia, Indonesia, on reefs at 0–15 m depth.

Remarks. The identification of the Rodrigues specimens with C. luteoculcitella  is based on morphological and molecular characters. The species is distinct by its cushion-shaped mass of tightly meshed tubuli in combination with prominent oscules and small conical-actined triactines. Partial 28S sequence data point towards close relationship with Indonesian specimen ZMAAbout ZMA Por. 0 8657 assigned to Clathrina luteoculcitella  (cf. Van Soest & De Voogd 2015) and the Northeast Australian holotype of the species in the Sponge Barcode Project database. Together they form a sisterclade to a clade containing specimens of C. rowi  (see Fig. 2A View Figure ). Clathrina rowi  is morphologically distinct from C. luteoculcitella  as the cormus is more loosely organized and has different color. As reported above, the two show small but consistent molecular differences.

Likely members of C. luteoculcitella  from Oman and the Seychelles have also a tightly meshed cormus and small spicules. The sequence of the Oman specimen matches closely with those of Rodrigues and Indonesian specimens of that species. However, the in situ color was noted as white, so some doubt is in order. The Seychelles specimen was very small and no sequence could be obtained, but what information we obtained makes membership of this species likely. We provide separate illustrations of the various specimens to support our conclusion that all are assumed to be conspecific.

RMNH

National Museum of Natural History, Naturalis

ZMA

Universiteit van Amsterdam, Zoologisch Museum

Kingdom

Animalia

Phylum

Porifera

Class

Calcarea

Order

Clathrinida

Family

Clathrinidae

Genus

Clathrina

Loc

Clathrina luteoculcitella Wörheide & Hooper, 1999

Van, Rob W. M. & De, Nicole J. 2018

2018
Loc

Clathrina luteoculcitella Wörheide & Hooper, 1999 : 868

: 868