Biofouling as a reservoir of Neoparamoeba pemaquidensis (Page, 1970), the causative agent of amoebic gill disease in Atlantic salmon
Amoebic gill disease (AGD) is currently the most important disease affecting the Tasmanian salmonid industry and is caused by a marine amoeba, Neoparameoba pemaquidensis (Page, 1970). In this study biofouling communities on salmon cages were surveyed for the presence of the disease agent over a peri...
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ftunivtasecite:oai:ecite.utas.edu.au:23927 2023-05-15T15:31:54+02:00 Biofouling as a reservoir of Neoparamoeba pemaquidensis (Page, 1970), the causative agent of amoebic gill disease in Atlantic salmon Tan, CK Nowak, BF Hodson, SL 2002 https://doi.org/10.1016/S0044-8486(01)00858-4 http://ecite.utas.edu.au/23927 en eng Elsevier http://dx.doi.org/10.1016/S0044-8486(01)00858-4 Tan, CK and Nowak, BF and Hodson, SL, Biofouling as a reservoir of Neoparamoeba pemaquidensis (Page, 1970), the causative agent of amoebic gill disease in Atlantic salmon, Aquaculture, 210, (1) pp. 49-58. ISSN 0044-8486 (2002) [Refereed Article] http://ecite.utas.edu.au/23927 Agricultural and Veterinary Sciences Fisheries Sciences Fish Pests and Diseases Refereed Article PeerReviewed 2002 ftunivtasecite https://doi.org/10.1016/S0044-8486(01)00858-4 2019-12-13T21:05:24Z Amoebic gill disease (AGD) is currently the most important disease affecting the Tasmanian salmonid industry and is caused by a marine amoeba, Neoparameoba pemaquidensis (Page, 1970). In this study biofouling communities on salmon cages were surveyed for the presence of the disease agent over a period of 4 months. Malt-yeast-seawater (MYS) agar plates were used to culture N. pemaquidensis with its presence confirmed by immunofluorescent antibody test (IFAT). Positive percentages of categorised samples ranged from 0% to 55%. The survey detected the presence of N. pemaquidensis on a number of macrofouling species (in particular bryozoan Scrupocellaria bertholetti and solitary ascidian Ciona intestinalis), and in microfouling and water samples. High percentages of positive IFATs occurred in microfouling aggregates, the solitary ascidian, C. intestinalis, and centrifuged water samples. No positive IFATs occurred from samples of Caprella sp. The presence of N. pemaquidensis was sporadic and varied in species and over sampling month. Experimental exposure of Atlantic salmon, Salmo salar, to lightly fouled netting was conducted to assess the potential for microfouling to act as a source of infection. No signs of the disease were detected in fish exposed to lightly fouled netting treatments, while 100% of positive control fish were infected and had an average of 4.24 1.79 amoebae per field of view in IFAT of mucus smears. When combined with N. pemaquidensis loads in the water column, the loads of amoebae in biofouling communities may contribute to disease outbreaks. Thus, biofouling should be considered a risk factor for AGD outbreaks. 2002 Elsevier Science B.V. All rights reserved. Article in Journal/Newspaper Atlantic salmon Salmo salar eCite UTAS (University of Tasmania) Aquaculture 210 1-4 49 58 |
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eCite UTAS (University of Tasmania) |
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English |
topic |
Agricultural and Veterinary Sciences Fisheries Sciences Fish Pests and Diseases |
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Agricultural and Veterinary Sciences Fisheries Sciences Fish Pests and Diseases Tan, CK Nowak, BF Hodson, SL Biofouling as a reservoir of Neoparamoeba pemaquidensis (Page, 1970), the causative agent of amoebic gill disease in Atlantic salmon |
topic_facet |
Agricultural and Veterinary Sciences Fisheries Sciences Fish Pests and Diseases |
description |
Amoebic gill disease (AGD) is currently the most important disease affecting the Tasmanian salmonid industry and is caused by a marine amoeba, Neoparameoba pemaquidensis (Page, 1970). In this study biofouling communities on salmon cages were surveyed for the presence of the disease agent over a period of 4 months. Malt-yeast-seawater (MYS) agar plates were used to culture N. pemaquidensis with its presence confirmed by immunofluorescent antibody test (IFAT). Positive percentages of categorised samples ranged from 0% to 55%. The survey detected the presence of N. pemaquidensis on a number of macrofouling species (in particular bryozoan Scrupocellaria bertholetti and solitary ascidian Ciona intestinalis), and in microfouling and water samples. High percentages of positive IFATs occurred in microfouling aggregates, the solitary ascidian, C. intestinalis, and centrifuged water samples. No positive IFATs occurred from samples of Caprella sp. The presence of N. pemaquidensis was sporadic and varied in species and over sampling month. Experimental exposure of Atlantic salmon, Salmo salar, to lightly fouled netting was conducted to assess the potential for microfouling to act as a source of infection. No signs of the disease were detected in fish exposed to lightly fouled netting treatments, while 100% of positive control fish were infected and had an average of 4.24 1.79 amoebae per field of view in IFAT of mucus smears. When combined with N. pemaquidensis loads in the water column, the loads of amoebae in biofouling communities may contribute to disease outbreaks. Thus, biofouling should be considered a risk factor for AGD outbreaks. 2002 Elsevier Science B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Tan, CK Nowak, BF Hodson, SL |
author_facet |
Tan, CK Nowak, BF Hodson, SL |
author_sort |
Tan, CK |
title |
Biofouling as a reservoir of Neoparamoeba pemaquidensis (Page, 1970), the causative agent of amoebic gill disease in Atlantic salmon |
title_short |
Biofouling as a reservoir of Neoparamoeba pemaquidensis (Page, 1970), the causative agent of amoebic gill disease in Atlantic salmon |
title_full |
Biofouling as a reservoir of Neoparamoeba pemaquidensis (Page, 1970), the causative agent of amoebic gill disease in Atlantic salmon |
title_fullStr |
Biofouling as a reservoir of Neoparamoeba pemaquidensis (Page, 1970), the causative agent of amoebic gill disease in Atlantic salmon |
title_full_unstemmed |
Biofouling as a reservoir of Neoparamoeba pemaquidensis (Page, 1970), the causative agent of amoebic gill disease in Atlantic salmon |
title_sort |
biofouling as a reservoir of neoparamoeba pemaquidensis (page, 1970), the causative agent of amoebic gill disease in atlantic salmon |
publisher |
Elsevier |
publishDate |
2002 |
url |
https://doi.org/10.1016/S0044-8486(01)00858-4 http://ecite.utas.edu.au/23927 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://dx.doi.org/10.1016/S0044-8486(01)00858-4 Tan, CK and Nowak, BF and Hodson, SL, Biofouling as a reservoir of Neoparamoeba pemaquidensis (Page, 1970), the causative agent of amoebic gill disease in Atlantic salmon, Aquaculture, 210, (1) pp. 49-58. ISSN 0044-8486 (2002) [Refereed Article] http://ecite.utas.edu.au/23927 |
op_doi |
https://doi.org/10.1016/S0044-8486(01)00858-4 |
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Aquaculture |
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210 |
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1-4 |
container_start_page |
49 |
op_container_end_page |
58 |
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1766362396321906688 |