期刊
INTERNATIONAL JOURNAL FOR PARASITOLOGY
卷 42, 期 13-14, 页码 1135-1141出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijpara.2012.09.007
关键词
Anthelmintic; Aquaculture; Seaweed; Monogenea; Parasite management; Natural treatments; Asian sea bass; Lates calcarifer
类别
资金
- James Cook University (JCU), Australia, Faculty of Science and Engineering Grant
- Advanced Manufacturing Cooperative Research Centre (AMCRC) through Australian Government's Cooperative Research Centre Scheme
Aqueous extracts from common tropical seaweeds were evaluated for their effect on the life cycle of the commercially important ectoparasite, Neobenedenia sp. (Platyhelminthes: Monogenea), through the survival of attached adult parasites, period of embryonic development, hatching success and oncomiracidia (larvae) infection success. There was no significant effect of any extract on the survival of adult parasites attached to fish hosts or infection success by oncomiracidia. However, the extracts of two seaweeds, Ulva sp. and Asparagopsis taxiformis, delayed embryonic development and inhibited egg hatching. The extract of A. taxiformis was most effective, inhibiting embryonic development of Neobenedenia sp. and reducing hatching success to 3% compared with 99% for the seawater control. Furthermore, of the 3% of eggs that hatched, time to first and last hatch was delayed (days 14 and 18) compared with the seawater control (days 5 and 7). Asparagopsis taxiformis shows the most potential for development as a natural treatment to manage monogenean infections in intensive aquaculture with the greatest impact at the embryo stage. (C) 2012 Australian Society for Parasitology Inc. Published by Elsevier Ltd. All rights reserved.
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