A New Record from East Malaysia: Sphaerolaimus macrocirculus (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...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | en en |
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UNIMAS
2013
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| Subjects: | |
| Online Access: | https://eprints.ums.edu.my/id/eprint/33282/1/A%20New%20Record%20from%20East%20Malaysia.pdf https://eprints.ums.edu.my/id/eprint/33282/2/A%20New%20Record%20from%20East%20Malaysia1.pdf https://eprints.ums.edu.my/id/eprint/33282/ https://publisher.unimas.my/ojs/index.php/BJRST/article/view/274 https://doi.org/10.33736/bjrst.274.2013 |
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| Summary: | 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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