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- W1969641594 abstract "DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials DAO 78:37-44 (2007) - DOI: https://doi.org/10.3354/dao01853 Metabolic effects of amoebic gill disease (AGD) and chloramine-T exposure in seawater-acclimated Atlantic salmon Salmo salar M. J. Leef1,2, J. O. Harris1,3, M. D. Powell1,4,* 1School of Aquaculture, Tasmanian Aquaculture and Fisheries Institute, University of Tasmania and Cooperative Research Centre for Sustainable Aquaculture of Finfish, University of Tasmania, Locked Bag 1-370, Launceston, Tasmania 7250, Australia 2Present address: National Institute of Water and Atmospheric Research Ltd, PO Box 147, Ruakaka, New Zealand 3Present address: School of Biological Sciences, Faculty of Science and Engineering, Flinders University of South Australia, GPO Box 2100, Adelaide, South Australia 5001, Australia 4Present address: Department of Fisheries and Natural Sciences, Bodø University College, 8049 Bodø, Norway *Corresponding author. Email: mark.powell@hibo.no ABSTRACT: Our aim was to determine possible metabolic effects amoebic gill disease (AGD) on Atlantic salmon Salmo salar. Standard (RS) and routine (RROU) metabolic rates were evaluated by continually measuring oxygen consumption in 2 independent tanks of fish (18.69 ± 1.01 kg m3, mean ± SE). Active metabolic rate (RACT) and metabolic scope (RACT RS) were assessed using a chasing protocol and determined at 3 time periods: (1) pre-infection, (2) 3 d post-infection, and (3) 2 d post-treatment. On Day 3 of the study, the fish were infected with amoebae isolated from the gills of AGD-affected salmon (2300 cells l1). No significant elevations in RACT or metabolic scope were detected 3 d post-infection and 2 d post-treatment; however, significant elevations in RS and RROU were detected 3 d post-infection and 2 d post-treatment. Assessment of RROU data, especially for the light period, also indicated a rise in oxygen consumption rate over the course of the experiment. Treatment of AGD-affected Atlantic salmon with chloramine-T (CL-T) appeared to briefly mitigate the rise in RS, as there was a 30% drop (though non-significant) in RS following treatment. Despite this, RS continued the upward trend 1 d following treatment. These results suggest that over the course of AGD development, RS in Atlantic salmon increases. Therefore, considering the physical conditions which constrain RACT, we expect that metabolic scope would become compromised in fish more heavily affected with AGD. Treatment with CL-T shows promise for mitigating the respiratory effects of AGD and potentially minimising the loss of metabolic scope. KEY WORDS: Amoebic gill disease · AGD · Oxygen uptake · Metabolic scope · Chloramine-T · Atlantic salmon Full text in pdf format PreviousNextCite this article as: Leef MJ, Harris JO, Powell MD (2007) Metabolic effects of amoebic gill disease (AGD) and chloramine-T exposure in seawater-acclimated Atlantic salmon Salmo salar. Dis Aquat Org 78:37-44. https://doi.org/10.3354/dao01853 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in DAO Vol. 78, No. 1. Online publication date: October 31, 2007 Print ISSN: 0177-5103; Online ISSN: 1616-1580 Copyright © 2007 Inter-Research." @default.
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