National Survey Of Sea Lice (Lepeophtheirus salmonis Krøyer and Caligus elongatus Nordmann) on Fish Farms in Ireland – 2021

Farmed stocks of Atlantic salmon in Ireland are inspected on 14 occasions throughout the year to monitor sea lice levels as part of a national programme. Sea lice are a naturally occurring parasite found on marine fish, including salmonids. They are small ecto-parasitic copepod crustaceans and there...

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Bibliographic Details
Main Authors: D'Arcy, J., Kane, F., Kelly, Suzanne, O’Donohoe, P., McDermott, Tom, Casserly, Joanne, Downes, Jamie K., Ruane, Neil M.
Format: Report
Language:English
Published: Marine Institute 2022
Subjects:
Sea Lice
sea lice monitoring
Fish health
Fish farms
Salmonid
Caligus elongatus Nordmann
Lepeophtheirus salmonis Krøyer
Atlantic salmon
Online Access:http://hdl.handle.net/10793/1755
Description
Summary:Farmed stocks of Atlantic salmon in Ireland are inspected on 14 occasions throughout the year to monitor sea lice levels as part of a national programme. Sea lice are a naturally occurring parasite found on marine fish, including salmonids. They are small ecto-parasitic copepod crustaceans and there are approximately 559 species. The objectives of the National Sea Lice Monitoring Programme are: *To provide an objective measurement of infestation levels on farms. * To investigate the nature of infestations. * To provide management information to drive the implementation of control and management strategies. * To facilitate further development and refinement of this strategy. The sea lice control and management strategy has five principal components: * Separation of generations. * Annual fallowing of sites. * Early harvest of two-sea-winter fish. * Targeted treatment regimes, including synchronous treatments. * Agreed husbandry practices.

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