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Cajeput oil, an effective botanical against gyrodactylid infection

Schelkle, Bettina, Richards, Elizabeth L., Snellgrove, Donna and Cable, Joanne ORCID: 2016. Cajeput oil, an effective botanical against gyrodactylid infection. Aquaculture Research 47 (9) , pp. 2928-2936. 10.1111/are.12744

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Infectious diseases are a major welfare issue, economically costly and, from a conservation perspective, threaten susceptible fish populations. Parasite control in aquaculture is over reliant on a limited range of treatments which tend to be low in efficacy, toxic to hosts and have negative consequences on human health and the environment. Here, we tested 22 botanical treatments alongside five controls against Gyrodactylus turnbulli (Harris 1986), in vitro and in vivo, infecting guppies (Poecilia reticulata Peters 1859). Survival of detached parasites was significantly reduced by all treatments with cajuput oil, bay rum oil, bladderwrack, octanoic acid, pine tree oil and barberry killing worms instantly. In vivo, cajuput oil applied with emulsifier was as effective as a licensed livestock dewormer, Levamisole, which is not routinely prescribed for use in fish; hence, cajuput can be considered for further research to replace Levamisole in UK research laboratories as well as in ornamental aquaculture.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Water Research Institute (WATER)
Subjects: Q Science > QK Botany
Q Science > QR Microbiology > QR180 Immunology
Publisher: Wiley-Blackwell
ISSN: 1355-557X
Funders: BBSRC
Last Modified: 01 Nov 2022 09:21

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