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CALIGUS  September 2003

CALIGUS September 2003

Subject:

Re: Salmon lice

From:

Gordon Ritchie <[log in to unmask]>

Reply-To:

'Biology and management in the control of lice on fish farms' project <[log in to unmask]>

Date:

Thu, 4 Sep 2003 14:08:11 +0200

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (127 lines)

Pelle
How long they can actually survive on processed fish I have no idea. But
can lice reach the consumer, then that depends on several factors and the
methods used at slaughter. In general, the pumping, anaesthetic/CO2 bath
(if this method is used), washing, cleaning ... will remove any lice that
may be on the fish. In some countries and companies (like Marine Harvest),
there are set procedures and limits on the number of lice permitted on fish
prior to slaughter, and in addition any lice remaining after primary
processing are picked off.
However, I have heard of lice at secondary processing and on packed fillets
! Alive ? I would doubt it.
Cheers,

Gordon
===============================
Dr Gordon Ritchie
Technical Manager, Fish Health
Nutreco Aquaculture Research Centre
Sjøhagen 3
4016 Stavanger
Norway

Tel: + 47 51 82 55 32 (office)
       + 47 91 81 52 03 (mob)
Fax: + 47 51 82 55 01
email: [log in to unmask]


                                                                       
                      Per Gunnar                                       
                      Kvenseth                  To:      [log in to unmask]
                      <[log in to unmask]         cc:                    
                      NO>                       Fax to:                
                      Sent by: 'Biology         Subject: Salmon lice   
                      and management in                                
                      the control of                                   
                      lice on fish                                     
                      farms'                                           
                      project                                          
                      <CALIGUS@LISTSERV                                
                      .HEANET.IE>                                      
                                                                       
                                                                       
                      04.09.2003 13:27                                 
                      Please respond to                                
                      'Biology and                                     
                      management in the                                
                      control of lice                                  
                      on fish farms'                                   
                      project                                          
                                                                       
                                                                       




Hallo,

From one of my good friends in the international salmon industry I have got
the question, how long can a salmon lice be alive on a dead salmon after
slaughtering, icing, transportation, etc.

We know that salmon lice can be alive ?? attached to wild salmon up to one
week ?? in a river. Tha cooling effect of the ice would make it easier for
the lice to stay alive ?. My guess and first answer is than one week. If
that is true live salmon lice can reach the salmon consumer ?? Hwo can give
me a better and more acurate answer, if possible with references.

In advance many thanks.

Regards

Per Gunnar Kvenseth

Seniorkonsulent ved Norsk Sjømatsenter
Bontelabo 2 - N - 5003 BERGEN

+ 47 55 55 48 89  telef.
+ 47 56 15 05 95 priv.
+ 47 55 55 48 88 fax
905 97 310 mob

[log in to unmask]

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This email discussion list, called Caligus, is to aid communication of
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the biology and control of sea-lice (parasitic copepods) on fish farms.
It is managed by the Ecological Consultancy Services Ltd (EcoServe).
For more details on the sea-lice network see the web site
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This email discussion list, called Caligus, is to aid communication of information of relevance to
the biology and control of sea-lice (parasitic copepods) on fish farms.
It is managed by the Ecological Consultancy Services Ltd (EcoServe).
For more details on the sea-lice network see the web site www.ecoserve.ie/projects/sealice.
All emails on the list are archived at http://listserv.heanet.ie/caligus.html.

You can subscribe to Caligus by sending an email to [log in to unmask]
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