Phylum Chordata
| Subphylum Tunicata/Urochordata | Class Ascidiacea |
Pink
ascidians
Eudistoma sp.
Family Polycitoridae
updated
Nov 2019
Where
seen? Small clusters of these bright pink ascidians are sometimes seen on
coral rubble on our Southern shores. Larger patches of pink coloured
blobs were also seen in the past on the jetty pilings of Chek Jawa.
Features: Clusters of a few irregular blobs about 1-2cm long usually
bright pink. Sometimes, much larger blobs 4-5cm are seen. Each blob
appears to be made up of many individual zooids embedded in a common
tissue.
In Serina Lee's article, the photo of Eudistoma laysani closely resembles these animals.
The Racing-stripe flatworm (Pseudoceros bifurcus) and other flatworms have been seen on top of it. Possibly eating the ascidians. |
Cyrene Reef, Nov 08
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Sisters Island, May 07
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*Species
are difficult to positively identify without dissection and examination
of internal parts.
On this website, they are grouped by external features for convenience
of display.
Pink
ascidians on Singapore shores |
Other sightings on Singapore shores |
Pulau Tekukor, Aug 17
Photo shared by Teo Say Chong on facebook. |
Kusu Island, Dec 18
Photo shared by Liz Lim on facebook. |
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Pulau Semakau South, Oct 18
Photo shared by Chong SiewMin on facebook. |
Pulau Salu, Jun 10 |
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Acknowledgements
Grateful thanks to Rene Ong for pointing out the identification of these animals.
Links
- Various Eudistoma sp. in the Family Polycitoridae on The Biodiversity of Singapore website of the Lee Kong Chian Natural History Museum.
References
- Serina S-C Lee, Janlin Y-H Chan, Serena L-M Teo & Gretchen Lambert. State of knowledge of ascidian diversity in South China Sea and new records for Singapore. 29 June 2016. Raffles Bulletin of Zoology Supplement No. 34: 718–743.
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