Experimental studies on the development of Contracaecum rudolphii (Nematoda: Anisakidae) in copepod and fish paratenic hosts

0334927 - BC 2010 RIV CZ eng J - Journal Article
Moravec, František
Experimental studies on the development of Contracaecum rudolphii (Nematoda: Anisakidae) in copepod and fish paratenic hosts.
Folia Parasitologica. Roč. 56, č. 3 (2009), s. 185-193. ISSN 0015-5683. E-ISSN 1803-6465
R&D Projects: GA MŠMT LC522; GA AV ČR IA62211
Institutional research plan: CEZ:AV0Z60220518
Keywords : Contracaecum rudolphii * life cycle * Czech Republic
Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine
Impact factor: 1.266, year: 2009

The larval development of the nematode Contracaecum rudolphii (Hartwich, 1964), was experimentally studied. Within the eggs cultivated in freshwater under laboratory temperatures of 20-22oC, the developing larva undergoes two moults on days 4-5, attaining the third larval stage. Most of the ensheathed third-stage larvae, 291-457 µm long, hatch spontaneously from egg shells on days 5-6. Experiments have indicated that hatched ensheated third-stage larvae and those still inside egg capsules are already infective to copepods and fishes, which both can be considered paratenic (metaparatenic) hosts. Five copepod species, Acanthocyclops vernalis, Cyclops strenuus, Ectocyclops phaleratus, Eucyclops serrulatus and Megacyclops viridis, the isopod Asellus aquaticus and small carps Cyprinus carpio were infected by feeding them these larvae. In addition, 9 fish species were successfully infected by feeding them copepods previously infected with C. rudolphii third-stage larvae.
Permanent Link: http://hdl.handle.net/11104/0179535