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Nitrate-enriched waters, but not fin clipping, reduces ecto-symbiont abundance on three-spined sticklebacks

Maceda-Veiga, A. and Cable, Joanne 2016. Nitrate-enriched waters, but not fin clipping, reduces ecto-symbiont abundance on three-spined sticklebacks. Bulletin European Association of Fish Pathologists 36 (6) , pp. 256-262.

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Abstract

Fin clipping is unlikely to be a major health issue, but their effects on small fish under variable environmental conditions have not been fully tested. In this study, we explored how nitrate pollution and fin-clipping affect the natural ecto-symbiont community of three-spined sticklebacks Gasterosteus aculeatus. Our results showed that fin clipping has a neutral effect on the abundance of the ecto-commensal Trichodina spp. and the well-known pathogen Gyrodactylus gasterostei, and that such an effect is not influenced by a 4-week exposure to 50 mg NO3 - l-1. This nitrate level, however, markedly reduced the abundance of these two ecto-symbionts compared to controls at < 10 mg NO3 - l-1. In conclusion, this study suggests that fin-clipping is a valid non-destructive method for tissue sampling in fish, and that an ecologically relevant nitrate concentration can protect fish against some species of Trichodina and Gyrodactylus.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Uncontrolled Keywords: ectoparasites; fish disease; nutrient loading; eutrophication; fish marking; tissue sample
Publisher: European Association of Fish Pathologists
ISSN: 0108-0288
Date of First Compliant Deposit: 23 January 2017
Date of Acceptance: 28 December 2016
Last Modified: 13 May 2019 14:07
URI: http://orca-mwe.cf.ac.uk/id/eprint/97634

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