Submitted by amonpong.k on Mon, 09/11/2023 - 14:45
The first record of the Apodid sea cucumber Polycheira rufescens (Brandt, 1835) (Holothuroidea: Chiridotidae) from the Andaman Sea, Thailand

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Authors

Arom Mucharin
National Science Museum, Technopolis, Khlong 5, Khlong Luang, Pathum Thani 12120 Thailand
Ratchaneewarn Sumitrakij
National Science Museum, Technopolis, Khlong 5, Khlong Luang, Pathum Thani 12120 Thailand

Abstract

Abstract

The holothuroid Polycheira refuscens (Brandt, 1835) is here reported for the first time in the Andaman Sea, Thailand and for the second time after being first recorded 120 years ago in the sea off Ko Lom, Mu Ko Chang, Trat Province, Gulf of Thailand. Its presence is recorded at Ao Sead, Ko Chang, Mu Ko Ranong National Park, Ranong Province, Andaman Sea, Thailand. Individuals were found under rocks on the rocky shore at low tide. There were 18 peltate-digitate tentacles, each with 10–15 pairs of free digits and the body wall contained rods and wheels with 6-spokes which have a finely serrated inner rim. These are the distinctive characteristics of the species.

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References

Brandt, J. F. (1835). Echinodermata ordo Holothurina. In: Prodromus Descriptionis Anima­lium ab H. Mertensio in Orbis Terrarum Circumnavigatione Observatorum. Fasc. I: 75 pps. Petropoli. 4262 pp. Clark, H. L. 1907. The Apodous Holothurians: A Monograph of the Synaptidae and Molpa­diidae. Smithsonian Contribution to Knowledge 35: 1231.

Clark, H. L. and F. W. W. Rowe, 1971. Monograph o Shallow-water Indo-West Pacific Echi­noderms. Trustees of the British Museum (Natural History), London. 238 pp., 31 pls.

Heding, S. G. 1928, Papers from Dr. Th. Motensens Pacific Expedition 191416. XLVL Synaptidae. Saertry of Videnskabelige meddeleler fra Densk naturhistorisk Forening 85: 105323.

Putchakarn, S., C. Aungtonya, A. Mucharin, S. Putchakarn, S. Ninetisong, A. Areroab, B Changlom, K. Moonstan, B. Pangsuk and O. Chounchit. (2017). Checklist of sea cu­cumber of Thailand. Biodiversity-based Economy Development Office (Public Organi­zation). Bangkok. 220 pp.

Semper, C. (18671868). Holothurien. In: Semper, C., ed.: Reisen im Archipel der Philip­pinen. Zweiter Theil. Wissenschaftliche Resultate. Erster Band. Leipzig: W. Engelmann. iv + 288 pp., 40 pls.

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