Salmon lice - challenges as seen from the Norwegian Food Safety Authority (NFSA)

Transcription

1 Salmon lice - challenges as seen from the Norwegian Food Safety Authority (NFSA) Paul Negård Senior adviser, Section Fish Health and Welfare [email protected]

2 Sea lice Challenges? Status sea lice, medication, sensitivity How can the challenges be met?

3 Visions Highly productive sea areas Marine algae New species Supplying industry Marine ingredients Fish farming industry Fisheries

4 Growth funded on : - Predictable production conditions - Environmental sustainability

5 Challenges for the fish farming industry, and NFSA Political framework conditions for growth? Use of medication/drugs against sea lice Reduced sensitivity and resistance development Conflicting goals Fish welfare Compensatory measures for reduced sensitivity and effect Combinations, consentrations, treatment periods..... Non-medicinal methods Environmental impact Wild salmon stocs Sea trout NFSA - supervision Regulation Resources Focused and targeted (risk assessed supervision of grow out sites) System (IC)

6 New organization of Mattilsynet from Material changes Supervisional and legislative departments are joined 3 academic divisions From 3 to 2 administrative levels Larger and fewer regions (from 8 to 5) Larger units in HO Fewer leaders Goal : Use resources in a better manner and create more resources for supervision

7 2015 : NFSA - Head office Head office 8 regions 60 local offices Head office 5 regions Department Fish and Seafood Section Fish Health and Welfare Section Seafood Section Import and Export

8 NFSA - Regions Head office 8 regions 60 local offices Head office 5 regions Region Nord Region Midt Region Sør og Vest Region Øst Region Stor-Oslo Finnk Troms Lofoten, Vesterålen, Sør- Troms og Ofoten Salten Helgeland Mid Namdal North Innherred og Fosen Sør-Innherred Trondheim, Orkdal, Hitra og Frøya Gauldal Nordmøre og Romsdal Sunnmøre og Ålesund Nordfjord Sunnfjord og Sogn Bergen og omland og Voss Hardanger og Sunnhordland South- West Haugalandet Midt Rogaland Telek Vestfold Søndre Buskerud Nordre Buskerud, Hadeland og Valdres Mjøsen Gudbrandsdalen Romerike Oslo, Asker og Bærum Østfold og Follo Grensekontroll og import Nasjonale godkjenninger Dalane, Sirdal og Flekkefjord Glomdal og Østerdal Agder Nasjonale oppgaver Sør og Vest

9 Weekly average of adult females_norway_ ,50 Gjennomsn. voksne hunnlus pr. uke, Norge absolute limit 0,45 0,40 0,35 0,30 0,25 0,20 0,15 0,10 0,05 0, Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Source : lusedata.no

10 jan mai sep des apr aug des New national Sea lice regulations Local Sea lice regulations Limits (average of lice pr. fish) for treatment and planned, coordinated treatments Closed treatment mandatory Absolute average limit instead of action limit FV - regional forskrift - tiltaksgr. v. holus MT - nasjonal forskrift - tiltaksgr. v. holus MT - nasjonal forskrift - tiltaksgr. total-lus HFN - titlaksgr. v. holus HFN - tiltaksgr. total-lus HFN - Koordinert avlusning MT nasjonalt - Koordinert avlusning FV/MT regionalt - Koordinert avlusning 5 new regulations in 4,5 years new regulation every 10 th month!

11 Average level of adult females pr.fish in April month Norway Source : lusedata.no

12 A few farms constitute most of the infection pressure Represents % of the total population of adult females, (emission of sea lice larvae) Source : NFSA (ca weekly reports)

13 16,0 Average temperature pr. month, Norway 15,0 14,0 13,0 12,0 11,0 10,0 9,0 8,0 7,0 6,0 5,0 4,0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Des Average Source : lusedata.no

14 # prescriptions of drugs against sea lice delivered in january-ember, Kilde : Mattilsynet_VetReg

15 Annual use of medical substances against sea lice ("kg active substans") - converted to deltametrin-equivalents (bath treatments) and emamectinequivalents (feed treatments) kg active substans, converted Production in 1000 tons Deltamethrin (1) Cypermethrin (7,5) Azamethifos (50) H2O2 ( ) Emamectin (1) Teflubenzuron (120) Diflubenzuron (200) Production, salmon & trout Sources :

16 Development in use of medicinal substances for sea lice treatments relative to production 0,045 Use of medicinal substances for sea lice treatments, [in deltametrin-equivalents (bath treatments) and emamectin-equvalents (feed treatments)], as % of production 0,040 0,035 0,030 0,025 0,020 0,015 0,010 0,005 0, Use in % av production Sources :

17 Average # of prescriptions per farm, Source : Veterinary institute : Surveillance program on sensitivity of sea lice drugs

18 Sensitivity status [Results of bioassay (LD 50 )] Azametifos Deltamethrin Emamectin benzoat Hydrogen peroxide Dark red resistent sea lice Orange sea lice with reduced sensitivity Yellow - sensitive sea lice Source : Veterinary institute : Surveillance program on sensitivity of sea lice drugs

19 Status sumy Emigration of wild salmon smolt ok in most areas the last years In some areas the infection pressure on sea trout is too high during summer Sea lice levels in farms are mostly under control, for the time being, in most areas and periods of the year Still dependent on drugs in sea lice control Owerall increase in use of medication/drugs, esp Reduced sensitivity and effect for most drugs in ever increasing areas Possible environmental effects of medical teratments (flubenzurones) A whole range of non-medicinal methods are under development Wrasse/lumpfish are the only methods of noticeable impact Incidents of unacceptable fish welfare after treatments and «experiments» both with medical and non-medical methods

20 Resources : status quo tasks : increasing Sea lice represent challenges in many ways : Environmental Welfare Epidemiological/Infectional Technical Political.. Ministry of trade, industry and fisheries : improve simplify renew Increasing : Complaints and legal trials Contact and cooperation with other sea food importing countries Increasing demands for : Knowledge / RD Documentation Surveillance and analysis Information to public, other agencies, organisations, media, public.. Transparency

21 NFSA are using large resources on sea lice Prioritations : Coordinated spring treatments Coordinated production plans, treatments and fallowing Closed treatments Premature slaughtering or destruction Reduction of site MAB Traditional to more functional regulations and supervision Less focus on details Responsible production Increased vigilancy on IC-systems Increased vigilancy on drug use

22 Principles of MAB regulation at site level based on targeted supervision and risk assessment system Plassering Weekly reports Virksomhet TMR 2013: Rapporterings % lus 1 NOFIMA AS 99 2 REFSNES LAKS AS 98 2 KNUTSHAUGFISK AS 98 3 AQUA GEN AS 97 4 AQUA FARMS VARTDAL AS 96 5 ERVIK LAKS OG ØRRET AS 95 6 MÅSØVAL FISKEOPPDRETT AS 93 7 BJØRØYA FISKEOPPDRETT AS 92 8 FJORDLAKS AQUA AS 91 9 SALMAR FARMING AS SALMAR ORGANIC AS 88 9 MARINE HARVEST NORWAY AS 88 9 PHARMAQ AS 88 9 VAL VIDEREGÅENDE SKOLE AS 88 9 MIDT NORSK HAVBRUK AS 88 9 RAUMA STAMFISK AS LERØY MIDT AS EMILSEN FISK AS SINKABERG-HANSEN AS SALMONOR AS ØYLAKS AS 82 Plassering Average sea lice levels Virksomhet TMR 2013: Rapporter med >0,5 kjm lus i % av rapporterte uker 1 ERVIK LAKS OG ØRRET AS 0 1 NOFIMA AS 0 2 KNUTSHAUGFISK AS 1 2 AQUA FARMS VARTDAL AS 1 2 SALMONOR AS 1 3 REFSNES LAKS AS 2 4 BJØRØYA FISKEOPPDRETT AS 3 5 RAUMA STAMFISK AS 4 5 LERØY MIDT AS 4 5 SALMAR FARMING AS SALMAR ORGANIC AS 4 6 MÅSØVAL FISKEOPPDRETT AS 5 6 AQUA GEN AS 5 6 FJORDLAKS AQUA AS 5 7 MARINE HARVEST NORWAY AS 6 7 ØYLAKS AS 6 8 PHARMAQ AS 8 8 VAL VIDEREGÅENDE SKOLE AS 8 9 EMILSEN FISK AS MIDT NORSK HAVBRUK AS SINKABERG-HANSEN AS 21

23 Thanks for your attention! Foto : EFF / Per Eide Studio