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Use of Praziquantel to Control Asian Tapeworm in Pond Microcosms


September 2002 - December 2007


The anthelmintic drug, praziquantel, kills only the tapeworm stage of the Asian tapeworm life cycle. It does not kill the eggs, coracidia, or procercoid life stages, making it difficult to treat infected fish in systems containing the intermediate copepod host. Copepods would act as a refuge for the tapeworm from the praziquantal bath treatment. Using microcosms containing the intermediate copepod host, we tested the effectiveness of using a second application of praziquantel to kill tapeworms that may develop from eggs released during the first treatment. We found no evidence of recruitment in microcosms treated twice for Asian tapeworm. Tapeworm prevalence and intensity in the control tanks remained the same throughout the experiment. We also discuss the potential costs and benefits of using praziquantel to treat populations of fishes in the wild. A final report on this work was submitted spring 2007 and a publication on this work is currently in review.

Research Products and Activities

Peer Reviewed Publications

  • Iles, A., T. P. Archdeacon, and S. A. Bonar. 2012. Novel praziquantel treatment regime for controlling Asian tapeworm infections in pond-reared fishes. North American Journal of Aquaculture 74:113-117.

Current Staff

Federal Staff: 2

Masters Students: 9

Phd Students: 1

Post Docs: 1

University Staff: 43

5 Year Summary

Students graduated: 25

Scientific Publications: 52

Presentations: 89



Funding Agencies

  • Science Support Partnership


Arizona Cooperative Fish and Wildlife Research Unit Cooperators

  1. Arizona Game Fish Department
  2. U.S. Fish and Wildlife Service
  3. U.S. Geological Survey
  4. University of Arizona
  5. Wildlife Management Institute