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Efficacy of some anthelmintics against the swimbladder nematode Anguillicola crassus of eel Anguilla anguilla under saltwater conditions
Geets, A.; Liewes, E.W.; Ollevier, F.P. (1992). Efficacy of some anthelmintics against the swimbladder nematode Anguillicola crassus of eel Anguilla anguilla under saltwater conditions, in: IZWO Coll. Rep. 22(1992). IZWO Collected Reprints, 22: pp. chapter 19
In: (1992). IZWO Coll. Rep. 22(1992). IZWO Collected Reprints, 22[s.n.][s.l.], more
In: IZWO Collected Reprints. Instituut voor Zeewetenschappelijk Onderzoek: Bredene. ISSN 0772-1250, more

Also published as
  • Geets, A.; Liewes, E.W.; Ollevier, F.P. (1992). Efficacy of some anthelmintics against the swimbladder nematode Anguillicola crassus of eel Anguilla anguilla under saltwater conditions. Dis. Aquat. Org. 13: 123-128, more

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Keywords
    Anguilla anguilla (Linnaeus, 1758) [WoRMS]; Anguillicola crassus Kuwahara, Niimi & Itagaki, 1974 [WoRMS]; Marine; Fresh water

Authors  Top 
  • Geets, A., more
  • Liewes, E.W.
  • Ollevier, F.P., more

Abstract
    Six anthelmintic drugs, Ivermectin, Closantel, Safewormer, Masoten, Oxfendazole and L-Levamisol·HCL were screened for their efficacy against Anguillicola crassus, a swimbladder nematode of European eel Anguilla anguilla. All experiments were carried out under saltwater conditions. Of the 6 drugs, L-Levamisole·HCL used in a bath treatment gave the most promising results. Evaluation of the curative dose of L-Levamisole·HCL showed that a long-term treatment (24h). Dosages lower than 20 mg 1-1 showed a lower efficacy against Anguillicola crassus. However, even with a long-term, high-dosage treatment, some recovery of adult nematodes with sublethal damage and/or migration of viable juveniles into the swimbladder lumen could not be excluded. When examined 35d after treatment, the percentage of mobile adults had increased, while a decrease in percentage of dead worms was noticed compared to values obtained immediately after treatment.

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