Rev 01/13/2024

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Acrobeloides Menu Ecosystem Functions and Services
Distribution Management
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      Acrobeloides Cobb, 1928

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Morphology and Anatomy:


photomicrographs by Howard Ferris and Sam Woo, UC Davis

Lip region with projecting probolae which are morphologically different among the species.

Stoma wall often appears distinctly separated into thickened component regions called rhabdions.

Cheilostom wide, by a funnel-shaped or narrow posterior part.

Acrobeloides male tail; spicules and gubernaculum

Body size range for the species of this genus in the database - Click:
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Widely distributed, world-wide.

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Bacteria.  Populations of Acrobeloides sp. were successfully established on several bacteria species (Wood, 1973).    

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Biology and Ecology:

 Bhat et al (2023) reviewed reports of the association of some Acrobeloides species with insects. They noted that several species have been isolated from soil samples using the Galleria soil baiting technique (Bedding & Akhurst, 1975). Other arthropods, molluscs and annelids have been reported infested with Acrobeloides spp. Some associations with invertebrates are reported to be phoretic and necronemic ( Hao et al., 2010).

 The contributions of Acrobeloides spp. to soil nutrient cycling and mineralizationof organic forms of nitrogen are well documented (Anderson et al., 1981; Ferris et al., 1995 1997)

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Life Cycle:

For Ecophysiological Parameters for this genus, click 
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Ecosystem Functions and Services:


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Anderson, R.V., Coleman, D.C., Cole, C.V. & Elliott, E.T. 198). Effect of the nematodes Acrobeloides sp. and Mesodiplogaster lheritieri on substrate utilization and nitrogen and phosphorous mineralization in soil. Ecology 62:549-555/

Bhat, A.H., Loulou, A., Abolafia, J., Machado, R.A.R., Kallel, S. 2023. Comparative morphological and molecular analyses of Acrobeloides bodenheimeri and A. tricornis Cobb, 1924 (Rhabditida, Cephalobidae) from Tunisia. Nematology 25: 207-226

Ferris, H., R. C. Venette and S. S. Lau.  1997.  Population energetics of bacterial-feeding nematodes:  Carbon and Nitrogen budgets.  Soil Biology and Biochemistry 29:1183-1194.

Ferris, H., R. C. Venette, H. R. van der Meulen and S. S. Lau1998.  Nitrogen mineralization by bacterial-feeding nematodes:  verification and measurement.  Plant and Soil 203:159-171. 

Hao, W., Li, Q., Zhang, J., Jiang, Y. & Liang, W. (2010). Utility of nematode Acrobeloides nanus for assessing subacute toxicity of heavy metals. Environmental Monitoring and Assessment 164, 273-278.

Wood, F.H. 1973. Nematode feeding relationships: Feeding relationships of soil-dwelling nematodes. Soil Riol. Biochem. 5: 593-601.

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Copyright © 1999 by Howard Ferris.
Revised: January 13, 2024.