Swangeria

Swangeria	Contents	Rev 06/16/2023
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Swangeria Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Swangeriidae Menu	Feeding	References
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Classification:

Enoplea

Dorylaimia
Dorylaimida

Belondiroidea

Swangeriidae

Swangeria Thorne, 1939

Nematodes in the family Swangeriidae were considered by Jairajpuri (1964) to differ from those in the Belondiridae by the usually asymmetrical odontostyle and long to filiform tail. However, ssome recent authors consider Swangirridae synonymous with Belondiridae.

Type species of the genus: Swangeria fragilis Thorne, 1939

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Morphology and Anatomy:

Body length 1-2 mm
Hemispheroid lip region, lips and papillae not projecting above contour
Buccal cavity a flat basket-like chamber with 12 indistinct sclerotized ribs
Amphids with stirrup-shaped fovea, aperture slit-like
Odontostyle typically dorylaimoid and slightly longer than the lip region diameter
Pharynx slender, tubular, expanding posteriorly into an elongate fusiform bulb enclosed in conspicuous sheath of sinistral spiral muscles,
Cardia elongate, isthmus-like
Tail long filiform, similar in both sexes

Female:

Amphidelphic
Vulva a transverse slit

Males:
Rare or absent in soome species
Spicules arcuate with lateral guiding pieces
Three well-spaced ventromedian supplements

Ref: Botha and Heyns, 1993; Andrassy, 2009

Body size range for the species of this genus in the database - Click:

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Distribution:

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Feeding:

Classified as plant feeders and possibly omnivores (Yeates et al., 1993).

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Biology and Ecology:

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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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Management:

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References:

Andrassy, I. 2009. Free-living Nematodes of Hungary III. Hungarian Natural History Museum, Budapest. 608p.

Botha, A., Heyns, J. 1993. Species of the genera Swangeria, Dorylaimellus (Axodorylaimellus), Laimydorus and Rhabdolaimus from rivers in the Kruger National Park (Nematoda: Dorylaimida and Araeolaimida). Koedoe 36:49-60. doi: 10.4102/koedoe.v36i1.361

Thorne, G. 1939. A monograph of the nematodes of the superfamily Dorylaimoidea. Capita Zool. 8: 1-263.

Yeates, G.W., T. Bongers, R. G. M. De Goede, D. W. Freckman, and S. S. Georgieva. 1993. Feeding habits in soil nematode families and genera—An outline for soil ecologists. Journal of Nematology 25:315-331

Swangeria

Copyright © 1999 by Howard Ferris. Revised: June 16, 2023.

Copyright © 1999 by Howard Ferris.
Revised: June 16, 2023.