A New Record From East Malaysia: Sphaerolaimus macrocirculus (Nematoda)

  • Norliana Mohd Rosli
  • Shabdin Mohd Long
  • Cheng-Ann Cheng
Keywords: East Malaysia, Sphaerolaimus, Nematoda


A new record of Sphaerolaimus macrocirculus (Filipjev 1918) in East Malaysian coastal water was described. The species was isolated from the muddy area of Muara Tebas, Sarawak, Malaysia. A total of 47 species of Sphaerolaimus have been reported worldwide. Samples of Sphaerolaimus macrocirculus were previously recorded in the sublittoral mud area of temperate country. S. macrocirculus possesses a stout body (1.1 – 1.6 mm; De Man ratios: a (body length/body width) = 16.8 – 27.5; b (body length/oesophagus length) = 2.3 – 4.3; c (body length/tail length) = 5.6 – 8.6). The circular amphid is very clear and situated at the base of the cephalic capsule. In male, the amphid ranged from 11.3 – 14.3 μm in diameter (mean = 12.7 ± 1.3) and 0.4 c.d. (corresponding diameter). In female, the amphid ranged from 7.2 – 9.4 μm in diameter (mean 7.8 ± 0.9) and 0.2 c.d. The species is characterised by the presence of eight groups of subcephalic setae at the head region and three longer terminal setae.


Ansari, K.G.M.T., Lyla, P.S., & Ajmal Khan, S. (2012). New records of free-living marine nematodes (Nematoda: Enoplida) from Indian waters. Journal of the Marine Biological Association of India, 54(2): 5-11.

Bejie, N., Lau, S., & Shabdin, M.L. (1999). Preliminary survey of intertidal meiofauna distribution in sediment at Kuching Bay,

Sarawak. Malaysian Science and Technology Congress, 1999, Environmental and Renewable Resources, Kuching, Sarawak.

Chen, C.A. & Shabdin, M.L. (2009). Horizontal distribution study of sandy nematodes from Muara Tebas, Sarawak, Malaysia. In L. Mohd. Talib, M. Che Abd. Rahim, U. Gires, O. Mohamed Rozali, M. Muzzneena Ahmad, A. Norhayati, O. Ramlan, Y. Shahruddin Hj & L. Tukimat. Proceeding of International Conference of Marine Ecosystem 2009 (2nd Volume) 26 - 28 May 2009, Awana Porto Malai, Langkawi, Malaysia. EKOMAR, Universiti Kebangsaan Malaysia.

Chen, C.A. Shabdin, M.L., & Norliana, M.R. (2012). Spatial distribution of tropical estuarine nematode communities in Sarawak, Malaysia (Borneo). The Raffles Bulletin of Zoology, 60(1): 173-181.

Chinnadurai, G. & Fernando, O.J. (2007). Meiofauna of mangroves of the southeast coast of India with special reference to the free-living marine nematodes assemblage. Estuarine Coastal and Shelf Science, 72: 329-336.


De Smet, G., Vincx, M., Vanreusel, A., Vanhove, S., Vanaverbeke, J., & Steyaert, M. (2001). Nematoda - free living, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: 161-174.

Deprez, T. & all 2005. NeMys. World Wide Web electronic publication. www.nemys.ugent.be, version (1/2013).

Filipjev, I.N. (1918). Free-living nematodes of the vicinities of Sevastopol. Issues 1 and 2. Reports of special zoological laboratory and Sevastopol biological station of Russian Academy of Sciences, ser. II, 4, 1-350. (English translation by M. Raven, 1968-1970. Israel Program for Scientific Translations, Jerusalem.)

Gaugler, R. & Bilgrami, A.L. (Eds). (2004). Nematode Behavior. London, UK: CABI Publishing. p 423.


Gerlach, S.A. & Riemann, F. (1973). The Bremerhaven Checklist of Aquatic Nematodes. Veröff. Inst. Meeresforsch. Bremerh. Suppl. 4, Heft 1.

MEDIN. (2011). UK checklist of marine species derived from the applications Marine Recorder and UNICORN, version 1.0.

Platt, H.M. & Warwick, R.M. (1983). Free-living marine nematodes, part 1. British Enoplids. Cambridge: Cambridge University Press. p 307.

Platt, H.M. & Warwick, R.M. (1988). Free-living marine nematodes, part II. British Chromadorids. W. Backhuys Publishing, Leiden. p 501.

Sakri, I., Wan Mohd Rauhan, W.H., Zaleha, K., Zuliatini, M.J., Mohamad Zaidi, Z., & Sukree, H. (2006). Seasonal abundance of benthic communities in coral areas of Karah Island, Terengganu, Malaysia. Turkish Journal of Fisheries and Aquatic Sciences, 6: 129-136.

Sasekumar, A. (1994). Meiofauna of a mangrove shore on the west coast of Peninsular Malaysia. Raffles Bulletin Zoology, 42: 901-915.

Shabdin, M.L. & Othman, B.H.R. (2005). Seasonal variations of marine nematode assemblages in Sabah, Malaysia. Philippines Scientific, 42: 40-66.

Shabdin, M.L. & Othman, B.H.R. (2008). Horizontal distribution of intertidal nematode from Sabah, Malaysia. Journal of Tropical Biology and Conservation, 4(1): 39-53.

Shabdin, M.L. (2006). Marine and estuarine meiofauna of Sarawak, Malaysia - a review. Sarawak Museum Journal LXII(83): 201-222.

Somerfield, P.J., Gee, J.M., & Aryuthaka, C. (1998). Meiofaunal communities in a Malaysian mangrove forest. Journal of Marine Biological Association of United Kingdom, 78: 717-732.


Tengku Balkis, T.S. & Shabdin, M.L. (2001). The abundance, composition and density of meiofauna at Teluk Kuching, Sarawak. Regional Conference on Natural Resources and Environmental Management, Kuching Sarawak.

Travisi, A. & Vidakovic, J. (1997). Nematofauna in the Adriatic Sea: review and check-list of free-living nematode species. Helgoländer Meerseunters, 51: 503-519.


Warwick, R.M., Platt, H.M., & Somerfield, P.J. (1998). Free-living nematodes (Part III) Monhysterids. In R.S.K. Barnes, & J.H. Crothers (Eds.), Synopsis of British Fauna, No. 53. (p.296). Shewsbury: Field Studies Council.

How to Cite
Rosli, N. M., Mohd Long, S., & Cheng, C.-A. (2016). A New Record From East Malaysia: Sphaerolaimus macrocirculus (Nematoda). Borneo Journal of Resource Science and Technology, 2(2), 12-18. https://doi.org/10.33736/bjrst.274.2013