Adoncholaimus fuscus   (Bastian,  1865) (Marine Worm)
Organism information awaits expert curation
Class: Adenophorea

A-Cloacal region of male; B-Female tail; C-Male tail; D-Female head

Length: male 3.98-5.30 mm, female 5.08-5.54 mm; Maximum width: 110-162 µ; Head: 37-40 µ.

It has six low rounded lips with small rounded labile papillae. Ten small rounded cephalic papillae. Buccal cavity divided by a deep groove at the level of the tips of the smaller buccal teeth. Right subventral tooth longer than the remaining two which are equal and prominent. Amphids with elliptical openings and rounded pockets. Oesophagus swollen markedly towards posterior end, but no definite bulb. Spicules curved with a series of small dorsal spines near the distal tip. Gubernaculum flat, plate-like. Ovaries paired, equal, reflexed. Male of this species has 20 pairs of minute caudal papillae present on conoid portion of tail.

Sexes are separate; fertilization is internal, eggs may be retained until hatching. Young appear as juvenile worms (not larvae).

Synonym (s)

Common Name (s)
Economic Importance and Threats
Importance:  Ecosystem balance
(Useful in determining environmental quality)

Habitat:  Benthic, Estuarine
Trophic Level:  Consumer
Prey:  Bacteria, fungi, other nematodes


• Tamil Nadu, Pichavaram INDIA
• Tamil Nadu, Parangipettai Coast INDIA

Literature Source(s)
  • Chinnadurai, G and Fernando, OJ (2007) Meiofauna of mangroves of the southeast coast of India with special reference to the free-living marine nematode assemblage Estuarine Coastal and Shelf Science 72 329-336
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Platt, HM and Warwick, RM (1983) Free living marine nematodes part I British enoplids Linnean society of London and the estuarine and brackish-water sciences association 28 307pp Available at - NIO, Goa

Page last updated on:2011-08-25

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