Abstract
Three species of chromadorids two of which are new to science are described from bottom samples of Lake Tana, L. Ziway and River Abbay, Ethiopia. Achromadora inflata n. sp. and Ethmolaimus zullinii n. sp. are characterized by a uniquely inflated and offset anterior end. The latter is an exception in its genus also by its possession of a well developed dorsal tooth and inconspicuous ventrosublateral denticles. Prodesmodora nurta Zullini, 1988 is reported here for the first time out of its type locality and is described in detail. SEM pictures of Ethmolaimus zullinii n. sp. and Prodesmodora nurta, and complete setae maps of the three species are also presented.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Abbreviations
- ABE:
-
= anterior body end
- ABW:
-
= anal body width
- Amph:
-
= amphid
- Amph W:
-
= amphidial fovea width
- CBW:
-
= corresponding body width
- CSL:
-
= cephalic setae length
- Ddent:
-
= dorsal denticle
- GL:
-
= gonad length
- L:
-
= length
- LM:
-
= light microscope
- LRW:
-
= lip region width
- MBW:
-
= maximum body width
- n :
-
= number of specimens
- NR:
-
= nerve ring from the anterior end
- PBE:
-
= posterior body end
- Ph L:
-
= pharyngeal length (neck length)
- PrL:
-
= prerectal length
- RL:
-
= rectal length
- SEM:
-
= scanning electron microscope
- V-A:
-
= distance from vulva to anus
- Vdent:
-
= ventral denticle
- W:
-
= width
References
Altherr, E., 1952. Les Nématodes du Parc National Suisse (Nématodes libres du soil) 2ème partie. Ergebnisse der wissenschaftlichen Untersuchung des schweizerischen National-parks 3: 315–356.
Andrássay, I., 1984. Klasse Nematoda. G. Fisher Verlag, Stuttgart, 509 pp.
Andrássy, I., 1989. Six new nematode species from South America. Acta Zool. Hung. 35: 1–16.
Eyualem, A. & A. Coomans, 1995. Freshwater nematodes of the Galápagos. Hydrobiologia 299: 1–51.
Eyualem, A. & A. Coomans, 1996. Aquatic nematodes from Ethiopia I. The genus Monhystera Bastian, 1865 (Monhysteridae: Nematoda) with the description of four new species. Hydrobiologia: 324: 1–51.
Jensen, P., 1994. Revision of Ethmolaiminae Filipjev & Stekhoven, 1941 (Nematoda, Chromadorida), with descriptions of one new genus and three new species. Hydrobiologia 286: 1–15.
Mulvey, R. H., 1969. Soil-inhabiting nematodes of the orders Araeolaimida, Chromadorida, Enoplida and Monhysterida from the Canadian high Arctic. Can. J. Zool. 47: 365–382.
Platt, H. M., 1982. Revision of the Ethmolaimidae (Nematoda: Chromadorida). Bull. Br. Mus. nat. Hist. (Zool.) 43: 185–252.
Platt, H. M., 1985. Further observations on the Ethmolaimidae (Nematoda: Chromadorida). J. Nat. Hist. 19: 139–149.
Strayer, D. L. & E. B. O'Donnell, 1992. The hyporheic nematode community of some streams in southeastern New York State, U.S.A. Stygologia 7: 143–148.
Tsalolikhin, S. J., 1993. New and little-known free-living nematodes from Ethiopia. Zoosyst. Rossica 2: 37–40.
Van der Linde, W. J., 1938. A contribution to the study of nematodes. Entomology Mem. Dep. Agric. Un. S. Afr. 2: 1–40.
Zeidan, A. B. & E. Geraert, 1990. Free-living nematodes from Sudan. Nematologica 35: 277–304.
Zullini, A., 1988. A new genus and five species of nematodes from Ethiopian lakes. Rev. Nématol. 11: 279–288.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Abebe, E., Coomans, A. Aquatic nematodes from Ethiopia V. Hydrobiologia 332, 27–39 (1996). https://doi.org/10.1007/BF00020778
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00020778