Parasitic isopods Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guerin-Meneville, 1832) of farmed Atlantic salmon and their potential as vectors of Neoparamoeba perurans (Young et al. 2007) in Tasmania
Reiterative freshwater bathing is the main treatment to control amoebic gill disease (AGD) of farmed Atlantic salmon in Tasmania, Australia. Regular freshwater exposure appears to control ectoparasitic cymothoid isopods, which were only seen at high prevalence and intensity in summer when fish had n...
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Online Access: | https://eprints.utas.edu.au/30892/ |
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ftunivtasmania:oai:eprints.utas.edu.au:30892 2023-05-15T15:31:44+02:00 Parasitic isopods Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guerin-Meneville, 1832) of farmed Atlantic salmon and their potential as vectors of Neoparamoeba perurans (Young et al. 2007) in Tasmania Gonzalez, L Taylor, RS Bridle, AR Crosbie, PBB Nowak, BF 2019 https://eprints.utas.edu.au/30892/ unknown Elsevier Science Bv Gonzalez, L, Taylor, RS, Bridle, AR orcid:0000-0002-5788-1297 , Crosbie, PBB orcid:0000-0001-8856-1731 and Nowak, BF orcid:0000-0002-0347-643X 2019 , 'Parasitic isopods Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guerin-Meneville, 1832) of farmed Atlantic salmon and their potential as vectors of Neoparamoeba perurans (Young et al. 2007) in Tasmania' , Aquaculture, vol. 507 , pp. 28-34 , doi:10.1016/j.aquaculture.2019.04.008 <http://dx.doi.org/10.1016/j.aquaculture.2019.04.008>. ectoparasite Cymothoidae vectors freshwater treatments aquaculture Neoparamoeba perurans Article PeerReviewed 2019 ftunivtasmania https://doi.org/10.1016/j.aquaculture.2019.04.008 2021-09-13T22:20:09Z Reiterative freshwater bathing is the main treatment to control amoebic gill disease (AGD) of farmed Atlantic salmon in Tasmania, Australia. Regular freshwater exposure appears to control ectoparasitic cymothoid isopods, which were only seen at high prevalence and intensity in summer when fish had not been treated for over 100 days. With the potential advent of non-freshwater AGD treatments or increased periods between freshwater bathing due to selective breeding for AGD resistance, it is possible that cymothoid parasitism will become an increasing threat on Tasmanian salmon farms. In order to establish whether isopods could be vectors of Neoparamoeba perurans Young et al. 2007 (the causative agent of AGD), gill isopods were collected from salmon that had not been bathed for seven months and carried a 95% prevalence of isopods, including Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guérin-Méneville, 1832). PCR analyses of gill swabs indicated that 82% of salmon were positive for N. perurans while 41% of the sampled isopods were positive for N. perurans on external surfaces. When internal material was analysed, only 9% of the isopods were positive for the amoeba, but in very low concentration. Quantitative analysis showed no correlation between the concentrations of N. perurans from gill swabs and the isopods from the same individual fish. Thus, it is unlikely that these isopods act as a significant reservoir or vector for N. perurans. Article in Journal/Newspaper Atlantic salmon University of Tasmania: UTas ePrints Aquaculture 507 28 34 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
unknown |
topic |
ectoparasite Cymothoidae vectors freshwater treatments aquaculture Neoparamoeba perurans |
spellingShingle |
ectoparasite Cymothoidae vectors freshwater treatments aquaculture Neoparamoeba perurans Gonzalez, L Taylor, RS Bridle, AR Crosbie, PBB Nowak, BF Parasitic isopods Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guerin-Meneville, 1832) of farmed Atlantic salmon and their potential as vectors of Neoparamoeba perurans (Young et al. 2007) in Tasmania |
topic_facet |
ectoparasite Cymothoidae vectors freshwater treatments aquaculture Neoparamoeba perurans |
description |
Reiterative freshwater bathing is the main treatment to control amoebic gill disease (AGD) of farmed Atlantic salmon in Tasmania, Australia. Regular freshwater exposure appears to control ectoparasitic cymothoid isopods, which were only seen at high prevalence and intensity in summer when fish had not been treated for over 100 days. With the potential advent of non-freshwater AGD treatments or increased periods between freshwater bathing due to selective breeding for AGD resistance, it is possible that cymothoid parasitism will become an increasing threat on Tasmanian salmon farms. In order to establish whether isopods could be vectors of Neoparamoeba perurans Young et al. 2007 (the causative agent of AGD), gill isopods were collected from salmon that had not been bathed for seven months and carried a 95% prevalence of isopods, including Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guérin-Méneville, 1832). PCR analyses of gill swabs indicated that 82% of salmon were positive for N. perurans while 41% of the sampled isopods were positive for N. perurans on external surfaces. When internal material was analysed, only 9% of the isopods were positive for the amoeba, but in very low concentration. Quantitative analysis showed no correlation between the concentrations of N. perurans from gill swabs and the isopods from the same individual fish. Thus, it is unlikely that these isopods act as a significant reservoir or vector for N. perurans. |
format |
Article in Journal/Newspaper |
author |
Gonzalez, L Taylor, RS Bridle, AR Crosbie, PBB Nowak, BF |
author_facet |
Gonzalez, L Taylor, RS Bridle, AR Crosbie, PBB Nowak, BF |
author_sort |
Gonzalez, L |
title |
Parasitic isopods Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guerin-Meneville, 1832) of farmed Atlantic salmon and their potential as vectors of Neoparamoeba perurans (Young et al. 2007) in Tasmania |
title_short |
Parasitic isopods Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guerin-Meneville, 1832) of farmed Atlantic salmon and their potential as vectors of Neoparamoeba perurans (Young et al. 2007) in Tasmania |
title_full |
Parasitic isopods Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guerin-Meneville, 1832) of farmed Atlantic salmon and their potential as vectors of Neoparamoeba perurans (Young et al. 2007) in Tasmania |
title_fullStr |
Parasitic isopods Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guerin-Meneville, 1832) of farmed Atlantic salmon and their potential as vectors of Neoparamoeba perurans (Young et al. 2007) in Tasmania |
title_full_unstemmed |
Parasitic isopods Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guerin-Meneville, 1832) of farmed Atlantic salmon and their potential as vectors of Neoparamoeba perurans (Young et al. 2007) in Tasmania |
title_sort |
parasitic isopods ceratothoa banksii (leach, 1818) and nerocila orbignyi (guerin-meneville, 1832) of farmed atlantic salmon and their potential as vectors of neoparamoeba perurans (young et al. 2007) in tasmania |
publisher |
Elsevier Science Bv |
publishDate |
2019 |
url |
https://eprints.utas.edu.au/30892/ |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
Gonzalez, L, Taylor, RS, Bridle, AR orcid:0000-0002-5788-1297 , Crosbie, PBB orcid:0000-0001-8856-1731 and Nowak, BF orcid:0000-0002-0347-643X 2019 , 'Parasitic isopods Ceratothoa banksii (Leach, 1818) and Nerocila orbignyi (Guerin-Meneville, 1832) of farmed Atlantic salmon and their potential as vectors of Neoparamoeba perurans (Young et al. 2007) in Tasmania' , Aquaculture, vol. 507 , pp. 28-34 , doi:10.1016/j.aquaculture.2019.04.008 <http://dx.doi.org/10.1016/j.aquaculture.2019.04.008>. |
op_doi |
https://doi.org/10.1016/j.aquaculture.2019.04.008 |
container_title |
Aquaculture |
container_volume |
507 |
container_start_page |
28 |
op_container_end_page |
34 |
_version_ |
1766362255021047808 |