Using sentinel cages to estimate infestation pressure on salmonids from sea lice in Loch Shieldaig, Scotland
Sentinel Atlantic salmon, held in cages, were used to estimate the monthly infestation pressure of sea lice at 3 locations along a salmonid migration route in Loch Shieldaig, a Scottish west coast sea loch. The study lasted 30 mo, covering an entire production cycle and fallow period at nearby fish...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Inter-Research
2014-03-01
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| Series: | Aquaculture Environment Interactions |
| Online Access: | https://www.int-res.com/abstracts/aei/v5/n1/p49-59/ |
| _version_ | 1818434169938640896 |
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| author | CC Pert RJ Fryer P Cook R Kilburn S McBeath A McBeath I Matejusova K Urquhart SJ Weir U McCarthy C Collins T Amundrud IR Bricknell |
| author_facet | CC Pert RJ Fryer P Cook R Kilburn S McBeath A McBeath I Matejusova K Urquhart SJ Weir U McCarthy C Collins T Amundrud IR Bricknell |
| author_sort | CC Pert |
| collection | DOAJ |
| description | Sentinel Atlantic salmon, held in cages, were used to estimate the monthly infestation pressure of sea lice at 3 locations along a salmonid migration route in Loch Shieldaig, a Scottish west coast sea loch. The study lasted 30 mo, covering an entire production cycle and fallow period at nearby fish farms. A total of 5007 sea lice were sampled from 3097 sentinel fish, with over 99% of these being Lepeophtheirus salmonis. Infestation pressure was higher in cages nearer the head of the loch and the River Shieldaig estuary. Copepodids were the main infective life cycle stage, but a few (0.5% of total lice sampled) mobile pre-adult and adult stages were also found on the sentinel fish. Infestation pressure on the sentinel fish was correlated with gravid L. salmonis counts from nearby farms. However, there was no evidence that particular events, such as treatments, at the farms led directly to changes in infestation pressure. These findings suggest that, although aquaculture is a contributor of sea lice larvae into the Torridon system, further work is required to determine factors influencing the relationship between farm sea lice levels and infestation pressure in the wider environment. |
| first_indexed | 2024-12-14T16:32:43Z |
| format | Article |
| id | doaj.art-a940a6e9f4ed4373883a7f33df69eea5 |
| institution | Directory Open Access Journal |
| issn | 1869-215X 1869-7534 |
| language | English |
| last_indexed | 2024-12-14T16:32:43Z |
| publishDate | 2014-03-01 |
| publisher | Inter-Research |
| record_format | Article |
| series | Aquaculture Environment Interactions |
| spelling | doaj.art-a940a6e9f4ed4373883a7f33df69eea52022-12-21T22:54:32ZengInter-ResearchAquaculture Environment Interactions1869-215X1869-75342014-03-0151495910.3354/aei00094Using sentinel cages to estimate infestation pressure on salmonids from sea lice in Loch Shieldaig, ScotlandCC Pert0RJ Fryer1P Cook2R Kilburn3S McBeath4A McBeath5I Matejusova6K Urquhart7SJ Weir8U McCarthy9C Collins10T Amundrud11IR Bricknell12Marine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKMarine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, Scotland AB11 9DB, UKSentinel Atlantic salmon, held in cages, were used to estimate the monthly infestation pressure of sea lice at 3 locations along a salmonid migration route in Loch Shieldaig, a Scottish west coast sea loch. The study lasted 30 mo, covering an entire production cycle and fallow period at nearby fish farms. A total of 5007 sea lice were sampled from 3097 sentinel fish, with over 99% of these being Lepeophtheirus salmonis. Infestation pressure was higher in cages nearer the head of the loch and the River Shieldaig estuary. Copepodids were the main infective life cycle stage, but a few (0.5% of total lice sampled) mobile pre-adult and adult stages were also found on the sentinel fish. Infestation pressure on the sentinel fish was correlated with gravid L. salmonis counts from nearby farms. However, there was no evidence that particular events, such as treatments, at the farms led directly to changes in infestation pressure. These findings suggest that, although aquaculture is a contributor of sea lice larvae into the Torridon system, further work is required to determine factors influencing the relationship between farm sea lice levels and infestation pressure in the wider environment.https://www.int-res.com/abstracts/aei/v5/n1/p49-59/ |
| spellingShingle | CC Pert RJ Fryer P Cook R Kilburn S McBeath A McBeath I Matejusova K Urquhart SJ Weir U McCarthy C Collins T Amundrud IR Bricknell Using sentinel cages to estimate infestation pressure on salmonids from sea lice in Loch Shieldaig, Scotland Aquaculture Environment Interactions |
| title | Using sentinel cages to estimate infestation pressure on salmonids from sea lice in Loch Shieldaig, Scotland |
| title_full | Using sentinel cages to estimate infestation pressure on salmonids from sea lice in Loch Shieldaig, Scotland |
| title_fullStr | Using sentinel cages to estimate infestation pressure on salmonids from sea lice in Loch Shieldaig, Scotland |
| title_full_unstemmed | Using sentinel cages to estimate infestation pressure on salmonids from sea lice in Loch Shieldaig, Scotland |
| title_short | Using sentinel cages to estimate infestation pressure on salmonids from sea lice in Loch Shieldaig, Scotland |
| title_sort | using sentinel cages to estimate infestation pressure on salmonids from sea lice in loch shieldaig scotland |
| url | https://www.int-res.com/abstracts/aei/v5/n1/p49-59/ |
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