A new record from East Malaysia: Sphaerolaimus macrocirculus (Nematoda)
Rosli, N.M.; Long, S.M.; Chen, C.-A. (2013). A new record from East Malaysia: Sphaerolaimus macrocirculus (Nematoda). Borneo Journal of Resource Science & Technology 2(2): 12-18
In: Borneo Journal of Resource Science & Technology. UNIMAS Publisher: Malaysia. ISSN 2229-9769; e-ISSN 0128-2972, more
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| Keywords |
Nematoda [WoRMS]; Sphaerolaimus Bastian, 1865 [WoRMS]
Marine/Coastal |
| Author keywords |
East Malaysia, Sphaerolaimus, Nematoda |
| Authors | | Top |
- Rosli, N.M.
- Long, S.M.
- Chen, C.-A.
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| Abstract |
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. |
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