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Two new free-living marine nematode species from an intertidal sandy-rocky shore on Pulau Ubin, Singapore with a key to the valid species of the genera Prooncholaimus and Acanthonchus
Chen, C.; Nguyen, D.; Smol, N. (2015). Two new free-living marine nematode species from an intertidal sandy-rocky shore on Pulau Ubin, Singapore with a key to the valid species of the genera Prooncholaimus and Acanthonchus. Raffles Bull. Zool. 2015(Supplement no.31): 68-74
In: The Raffles Bulletin of Zoology. National University of Singapore: Singapore. ISSN 0217-2445
Peer reviewed article  
Available in  Authors 
    Vlaams Instituut voor de Zee: Open access 291700 [ download pdf ]
Keywords
    Nematoda [WoRMS]
    Marine/Coastal
Author keywords
    Marine nematodes; intertidal; rocky; taxonomy; Singapore
Authors  Top 
  • Chen, C.
  • Nguyen, D.
  • Smol, N.
Abstract
    Marine nematodes belonging to two genera Prooncholaimus and Acanthonchus are described from Tanjung Tajam on the westernmost end of Pulau Ubin in the East Johor Strait. Prooncholaimus tani new species is characterised by having short cervical setae, a large buccal cavity, pocket-shaped amphid, thin gubernaculum and curved, L-shaped spicules. Acanthonchus singaporensis new species has a cuticle striated with transverse rows of minute punctations but is irregular laterally at the posterior region; cervical setae are present posterior to the amphid, the latter being multispiral with a total of 5.5 turns. Spicules are paired, cuticulatised. The gubernaculum is also paired and almost equal length to the spicules. Six tubular supplements are present with the most anterior large and heavily cuticularised with a hook near the posterior end of the supplement.
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