Chalaronema sibogae Ijima, 1927
publication ID |
https://doi.org/ 10.11646/zootaxa.1866.1.3 |
persistent identifier |
https://treatment.plazi.org/id/0398E958-4858-1551-FF41-0BE91298FA3F |
treatment provided by |
Felipe |
scientific name |
Chalaronema sibogae Ijima, 1927 |
status |
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Chalaronema sibogae Ijima, 1927 View in CoL ( Fig. 14 View FIGURE 14 ; Tab. 13A, B)
Material. Type: ZMA —fragment of the type, ‘Siboga’, sta. 251. Other materials: WAM 10882 About WAM — RV Soela, sta. SO 2/82/ 38, 122 miles NNW of Port Headland , 18 o 22’–23’ S 117 o 56’ –54’E, depth 309– 316 m. WAM 101 82 About WAM — RV Soela , sta. SO 2/82/42 119 miles NW of Port Headland, 18 o 44’S 117 o 20’–19’E, depth 326– 360 m. WAM Z 602 About WAM (3 specimens)— RV Soela, sta. SO 2/82/44 124 miles NW of Port Headland , 18 o 54’–55’ S 117 o 2 0’E, depth 300– 306 m. WAM Z 603 About WAM — RV Soela, sta. SO 2/82/ 45, 133 miles NW of Port Headland , 18 o 49’– 48’ S 116 o 50’ –52’S, depth 400– 406 m.
Description. Body: The new specimens show an oval body form with a sieveplate, but without an atrial cavity. The length of the body is 40–80 mm, the diameter 20–50 mm. Some of the specimens have upper fragments of the tufts (150–400 mm long and 3–4 mm in diameter) of anchorate spicules. It is very difficult to recognize if these tufts are twisted or not, but in comparison with the original description of this sponge the tufts are thinner and more compact.
Spicules: The measurements are given in the Tab 13A, B. Most of the spicules are in the size range of what is known from the original description. But one sponge WAM 10182 has a few mesamphidiscs with spiny shafts (absent in other specimens) and a notable amount of rare micropentactins and additionally common microhexactins similar in shape to the microstauractins (with harpoonlike rays), but their rays are generally shorter, 0.043 –0.112 mm.
Remarks. It is very difficult to make a decision if the genus Chalaronema should be kept or synonymized with Hyalonema (Pteronema) , because these sponges often have no basal tufts preserved, or they are so destroyed that it is impossible to decide whether or not the root tuft is twisted. Moreover, it is unknown if the types were damaged in a way that the tuft has become untwisted, or whether this really is very important for taxonomic purposes. Nevertheless, the genus Chalaronema is kept for the time being and our new specimens are tentatively referred to it.
Table 13 A Types ( Ijima, 1927 and new Australian materials
original data)
2 specimens fr795 fr797
n avg min max std n avg min max std n avg min max std L. derm. pentact. pinul. ray.110.150 15.122.087.204.030 15.087.041.102.014 L. derm. pentact. tangent. ray.040.068 15.045.031.056.007 15.044.031.056.008 L. atr. pentact. pinul. ray.080 16.218.122.321.063 15.214.107.306.067 L. atr. pentact. tangent. ray.075 16.040.031.056.007 15.044.036.056.007 L. macroamphidisc.272.190.357 16.319.265.388.040 15.297.209.383.051 l umbel, macramphidisc.089.030.114 16.110.077.143.022 15.092.056.112.018 d umbel, macramphidisc.103.049.137 16.129.087.163.026 15.110.066.143.023 L. mesamphidisc
l umbel, mesamphidisc
d umbel, mesamphidisc
L micramphidisc.016.013.024 15.015.011.017.002 15.015 0.13.021.002 l umbel, micramphidisc.005.004.009 15.005.004.006.001 15.005.004.006.001 d umbel, micramphidisc.005.004.007 15.005.004.006.001 15.005.004.006.001 L microstauractine ray.060.198 15.106.077.153.020 15.123.087.179.028 Table 13 B new Australian materials
fr802.2 fr823
n avg min max std n avg min max std L. derm. pentact. pinul. ray 15.096.071.117.011 25.113.092.128.010 L. derm. pentact. tangent. ray 15.047.036.056.006 25.042.023.051.007 L. atr. pentact. pinul. ray 15.233.112.510.118 25.239.097.357.071 L. atr. pentact. tangent. ray 15.045.023.061.009 25.045.033.056.007 L. macroamphidisc 15.339.235.439.049 25.293.219.383.037 l umbel, macramphidisc 15.092.061.122.019 25.092.061.133.015 d umbel, macramphidisc 15.108.077.143.020 25.113.079.143.018 L. mesamphidisc 9.093.046.138.027 l umbel, mesamphidisc 9.028.015.036.006 d umbel, mesamphidisc 9.025.012.038.007 L micramphidisc 15.017.013.022.003 25.018.014.038.005 l umbel, micramphidisc 15.005.004.007.001 25.006.004.014.002 d umbel, micramphidisc 15.005.004.006.001 25.006.004.012.001 L microstauractine ray 15.113.071.153.023 25.114.010.163.031
Lophophysema Schulze, 1900 View in CoL
Lophophysema inflatum Schulze, 1900 View in CoL
Material. WAM Z 13101 View Materials ; WAM Z 574 About WAM ; WAM Z 576 About WAM ; WAM Z 13102 View Materials —sta. 4, NW Cape , 21 o 28.80’–28.20’ S 113 o 57.93’ –58.05’E, depth 570 m. NTM Z 0002572 View Materials —sta. NWS0042, off Rowley Shoals , Northwest Shelf , Scampi trawl Grounds, 17 o 24’S 118 o 52’E, depth 445 m. GoogleMaps NTM Z 0002589 View Materials ; NTM Z 0002591 View Materials —sta. NWS0049, off Rowley Shoals , Northwest Shelf , Scampi trawl Grounds, 17 o 39’S 118 o 38’E, 410 m. GoogleMaps WAM Z 12492—sta. 1031103, NW Cape (W Australia), 21 o 39.18’S 113 o 51.44’E, depth 610– 649 m. GoogleMaps
Description and remarks. The identified specimens and fragments definitely belong to this species; their spicule composition and forms are equal to the variability of the species described by Tabachnick and Lévi (1999).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Genus |
Chalaronema sibogae Ijima, 1927
Tabachnick, Konstantin R. & Menschenina, Dorte Janussen And Larisa L. 2008 |
Chalaronema sibogae
Ijima 1927 |
Lophophysema
Schulze 1900 |
Lophophysema inflatum
Schulze 1900 |