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Hydrobiologia

, Volume 346, Issue 1–3, pp 59–76 | Cite as

Acantholaimus (chromadoridae:nematoda) from the Indian Ocean: description of seven species

  • Agnes W. Muthumbi
  • Magda Vincx
Article

Abstract

Seven species of the Acantholaimus aredescribed. Acantholaimus vermeuleni sp.n. ischaracterised by labial and cephalic sensilla thatare located at the same level, two post amphidialsetae on the dorso-lateral side and a poorlydeveloped stoma without distinct teeth. Acantholaimus verscheldi sp.n. is characterised bya narrow elongate pharyngeal region, a long stomawith distinct teeth and short (4–7 µm) cephalicsensilla. Acantholaimus heipi sp.n. ischaracterised by a narrow elongate pharyngealregion, well developed teeth in the stoma and longcephalic sensilla (11–13 µm). Acantholaimuselegans Jensen 1988 has a narrow anteriorpharyngeal region that increases in lengthposteriorly, it has setae before and after theamphids on both sides and stoma with well developedteeth. Acantholaimus gathumai sp.n. ischaracterised by long cephalic (10–15 µm) andsomatic (8–10 µm) setae and lateraldifferentiation with fine dots (5–7 µm inwidth). Acantholaimus geraerti sp.n. has longcephalic sensilla (15–19 µm) and narrow (4–6 µm)distinct lateral differentiation. Acantholaimusinvaginatum sp.n. is characterised byvery long cephalic setae (16–21 µm), severalsetae at the pharyngeal region and wide lateraldifferentiation with fine dots, often the stoma isinvaginated.

Distribution of the different species of Acantholaimus encoutered in the four transectsstudied is also described.

Keywords

Indian Ocean Lateral Differentiation Pharyngeal Region Cephalic Seta Distinct Tooth 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • Agnes W. Muthumbi
    • 1
    • 2
  • Magda Vincx
    • 1
    • 2
  1. 1.Department of Morphology, Systematics & Ecology, Marine Biology SectionUniversity of GentGentBelgium
  2. 2.Kenya Marine & Fisheries Research InstituteMombasaKenya

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