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A sponge
Sponge & Cnidarian
A sponge
Tentorium semisuberites (Schmidt, 1870)
WoRMS AphialID
134224
<a href=BOLD:ACB3923
https://bench.boldsystems.org/index.php/Public_BarcodeCluster?clusteruri=BOLD:ACB3923 target="_blank" style="text-decoration: underline">BOLD:ACB3923
https://bench.boldsystems.org/index.php/Public_BarcodeCluster?clusteruri=BOLD:ACB3923
Sample IDs
HMSC174_02727
https://bench.boldsystems.org/index.php/MAS_DataRetrieval_OpenSpecimen?selectedrecordid=ATCSP397-24
HMSC174_02763
https://bench.boldsystems.org/index.php/MAS_DataRetrieval_OpenSpecimen?selectedrecordid=ATCSP429-24
Collected
Saguenay Fjord, Scotian Shelf
Distinguishing Features
• External appearance (Fig. A): Small, white, mushroom shaped sponge, our specimens with a maximum length of 1.5 cm. The sides are smooth, but the upper surface is hispid and may bear one or more papillae.
• Skeleton (Fig. C, D): Tracts of principal tylostyles ascend to the cortex, these may branch. Tract diameter ranges from 68 to 153 µm in our specimens. The lateral cortex is formed of a dense layer of criss-crossed intermediate styles. The upper cortex is composed of tracts radiating from the choanosome and an upper palisade of small styles.
• Spicules (Fig. E): Measurements from ARC 81515. Principal tylostyles: 1395(1741)2133 by 16(20)25 µm. Intermediate tylostyles: 655(894)1186 by 9(16)24 µm. Small tylostyles: 245(363)548 by 7(11)16 µm.
Habitat
Found on sublittoral bedrock.
Geographic Range
The type locality is the West Greenland Shelf. Recent Canadian records from Newfoundland and Labrador, Gulf of St. Lawrence, and Saguenay Fjord.
Fun Fact
The Latin name comes from Tentorium, meaning a tent or pavillion made out of stretched cloth or skins. This sponge does look rather like a tiny tent.
Barcode Distribution
Saguenay Fjord, Norway, Arctic Ocean.
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