Glossary

This glossary defines terms as they are used in the context of this website. View javascript version

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A

Active Site An aquaculture site that has either actively produced fish or shellfish in the last 3 years or which is fallow as a part of a planned production cycle.

Active Ingredient (in Sealice Treatments) Certain products are authorised for use on marine fish farms to control infestations of sealice. The active ingredient is the chemical compound contained in the product that is effective against the sealice.

Actual Biomass on Site The maximum weight of fish held on site at any one time during each month. These figures are reported to SEPA by marine fish farm operators.

Alert Category A category of a sample result within Food Standards Scotland's Microhygiene Monitoring Programme, showing whether the sample is within or outwith the related area’s existing classification.

Alexandrium Sp. A saxitoxin-producing dinoflagellate that can cause Paralytic Shellfish Poisoning (PSP). Tested for within Food Standards Scotland's phytoplankton monitoring programme.

Algae Unicellular or multicellular organisms formerly classified as plants, occurring in fresh or salt water or moist ground, that have chlorophyll and other pigments but lack true stems, roots, and leaves. Algae, which are now regarded as protoctists, include the seaweeds, diatoms, and spirogyra.

Algal Blooms A rapid increase and accumulation in the population of algae (typically microscopic) naturally occurring in the seawater. Algal blooms may produce potent biotoxins which can accumulate in filter-feeding bivalve molluscs.

AHA - Associated Harvesting Area Classified Harvesting Areas which are associated with a Representative Monitoring Point (RMP) within Food Standards Scotland's biotoxin monitoring programme.

AMX – Alphamax Topical bath sealice treatment containing the active ingredient Deltamethrin. Used for the control of sealice on farmed Atlantic salmon.

Aquaculture The production of fish, shellfish, crustaceans, seaweeds or algae in a managed environment, often enhancing production beyond that which would normally be achieved naturally.

Area Management Agreement An agreement between interested parties, which may include aquaculture companies, wild fish interests, fisheries interests and fisheries biologists on how an area of sea may be managed for the mutual benefit of all parties.

ASP - Amnesic Shellfish Poisoning Amnesic Shellfish Poisoning is a food-borne intoxication associated with the consumption of contaminated shellfish harvested from waters affected by toxins that are produced by dinoflagellates of the genus Pseudonitzschia.

ASP–HPLC High-Performance Liquid Chromatography test for Amnesic Shellfish Poisoning. Used in Food Standards Scotland's Shellfish Monitoring Programme.

Authorisation (by Marine Scotland) The process in which all Aquaculture Production Businesses (APB's) are authorised to allow them to farm at stated active farm sites. To become authorised the applicant business must provide information on their business and details of operational practices before and during the period of authorisation. This includes keeping records on movements and mortalities and implementing good biosecurity. Aquaculture Processing Establishments (APE's) that process aquaculture animals killed for disease control purposes also need to be authorised.

Azamethiphos The active ingredient in the trade product Salmosan. Used for the control of sealice on farmed Atlantic salmon.

AZA – Azaspiracid Lipophilic toxin which can cause Diarrhetic Shellfish Poisoning (DSP). A test for this toxin is used within The Food Standard’s Agency in Scotland's Biotoxin Monitoring Programme.

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B

Bacterial Kidney Disease A disease of salmonid fish, caused by the bacterium Renibacterium salmoninarum.

Benthic Relating to the bottom of a sea or lake or to the organisms that live there.

Biomass The total amount of living or dead material in a given habitat, population, or sample. Specific measures of biomass are generally expressed in dry weight (after removal of all water from the sample) per unit area of land or unit volume of water.

Biomass Exceedance The weight of fish held on a site above the maximum weight authorised in the CAR licence issued by SEPA.

Biomass Limit The maximum weight of biomass that can be held on a fish farm as authorised in the CAR licence issues by SEPA.

Bivalve Mollusc Any marine or freshwater mollusc of the class Pelecypoda (formerly Bivalvia or Lamellibranchia), having a laterally compressed body, a shell consisting of two hinged valves, and gills for respiration. The group includes clams, cockles, oysters, and mussels. In the context of European food hygiene legislation, the term definition as "'Bivalve molluscs' means filter-feeding lamellibranch molluscs".

Biotoxin Naturally occurring poisonous chemical compound produced by some types of marine algae. Filter-feeding bivalve shellfish can accumulate these toxins from naturally occurring microscopic algae. These algae are periodically present in the water column and become available to the shellfish as part of their diet. The consumption of contaminated shellfish can pose health risks to the consumer as well as economic risks to the shellfish industry. In the European Union (including the UK) there are currently three major shellfish biotoxin groups that can be detected in shellfish and are subject to statutory testing to protect human health. These are: Paralytic Shellfish Poisoning (PSP) toxins; Lipophilic toxins, including those responsible for Diarrhetic Shellfish Poisoning (DSP); Amnesic Shellfish Poisoning (ASP) toxins.

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C

Calicide Medicated feed product containing the active ingredient teflubenzuron. Used for the control of sealice on farmed Atlantic salmon.

CAR - Controlled Activities Regulation Refers to regulation under the Water Environment (Controlled Activities) (Scotland) Regulations 2011. Licences are issued by SEPA to seawater and freshwater fish farms that set out the conditions fish farms must comply with. If the fish farms do not comply with the licence conditions, SEPA can take legal action.

Case A defined piece of work, relating to a site or area, that may involve investigation, inspection or the collection of information by the Fish Health Inspectorate of Marine Scotland.

Case Number A unique identification number assigned to an individual case identified by Marine Scotland.

CEFAS Centre for Environment, Fisheries and Aquaculture Science.

Charr Any of several fishes of the genus Salvelinus, especially the Arctic charr, related to the trout and salmon.

Classified Harvesting AreaFood Standards Scotland's assignment of ‘classes’ (A,B or C) to individual harvesting areas based on official monitoring programme results, which determine the extent of microbiological contamination in production areas. Classification 'X' denotes the area being unclassified. The requirements are given in Annex II, Chapter II of Regulation (EC) No 854/2004.

Confirmed Designation Order A legal notice designating an identified area as being infected with a confirmed listed disease, under the terms of regulation 28 of the Aquatic Animal Health (Scotland) Regulations 2009. The purpose of the notice is to control the movement of fish, equipment or any other material that may lead to the spread of fish disease.

Control Notice A legal notice served under the terms of the Diseases of Fish (Control) Regulations 1994, for the purpose of controlling the spread of diseases of fish by restricting the movement of dead fish. This is a historic term and this regulation is no longer in force.

Crown Estate, The The body tasked under The Crown Estate Act of 1961 with administering and managing the hereditary property, possessions and rights of the British Monarch. The role of The Crown Estate is that of a landowner and it does not have any function as a regulator. In legal documents the term 'The Crown Estate Commissioners' is used.

Crown Land Land that forms part of the hereditary possessions of The Crown. This land can also be referred to as 'The Crown Estate'. The Crown Estate land includes around half the foreshore in the UK and virtually all the seabed out to 12 nautical miles.

Cypermethrin The active ingredient in the trade product Excis. Used for the treatment and control of sealice on farmed Atlantic salmon.

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D

DAO - Designated Area Order A legal order, made and served under the Diseases of Fish Act 1937, identifying an area, normally a fish farm site, where the movement of fish ova (eggs) or fish or fish feed is restricted, for the purpose of the control of fish diseases. This Act is no longer in force.

Deltamethrin The active ingredient in the product AMX (Alphamax). Used for the control of sealice on farmed Atlantic salmon.

Deregistered Site A site that was previously registered with Marine Scotland for the purpose of aquaculture, but is no longer in existence (all equipment removed from water).

Dinophysis Sp. A dinoflagellate species that can cause Diarrhetic Shellfish Poisoning (DSP) and is tested for within Food Standards Scotland's Phytoplankton Monitoring Programme.

Disease Agent A viral, bacterial, fungal or parasitic pathogen causing diseases of aquatic animals.

DSP - Diarrhetic Shellfish Poisoning Diarrhetic Shellfish Poisoning is a food-borne intoxication associated with eating contaminated shellfish harvested from waters affected by toxins that are produced by dinoflagellates of the genus Dinophysis.

DSP by MBA (test) Biological Assay test for Diarrhetic Shellfish Poisoning. Occasionally used within Food Standards Scotland's Shellfish Monitoring Programme for unvalidated testing methods.

DTX – Dinophysistoxin Toxin produced or elaborated by planktonic algae (dinoflagellates) upon which shellfish feed.

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E

E coli - Escherichia coli A species of bacterium that is a member of the faecal coliform group which is associated with the intestines of warm-blooded animals and birds. These bacterium are generally harmless, but when passed in excrement they can enter seawater from sewage or farm animal run-off and once in seawater, they can be concentrated by filter-feeding shellfish.

Eggs (Green or Eyed) The fertilised ova (eggs) of fish, which may or may not show the development of eye spots.

Emamectin Benzoate The active ingredient in the trade product Slice, used for the control of sealice on farmed Atlantic salmon.

EQS – Environmental Quality Standard Concentration limits for specific chemicals which, if met, are unlikely to cause environmental effects.

Excis Topical bath treatment containing the active ingredient Cypermethrin. Used for the control of sealice on farmed Atlantic salmon.

Expired Leases Crown Estate Leases that have reached their expiry date need to be formally terminated at expiry in order to be brought to an end. Failing formal termination at expiry, the lease will continue to be 'live' under a process called Tacit Relocation. It is therefore recommended that any queries regarding the termination status of expired leases are directed to The Crown Estate.

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F

Faecal Contamination Contamination of food and water by human and animal faecal bacteria. Public health controls on commercial shellfish production use faecal coliforms and/or E. coli to assess the degree of faecal contamination.

Fish Farm An aquaculture establishment for the production of fish or the ova of fish, consisting of cages, ponds, tanks, raceways, hatching troughs or other production facilities.

Fish Escape An unintended release of live aquaculture animals from a fish farm site.

Freshwater Cages A floating pen, normally constructed of wood or metal, supporting a meshed net containing fish for the purpose of fish farming, located in freshwater.

Freshwater Hatchery A facility used for the holding and hatching of fish ova, utilising freshwater.

Freshwater Ponds A facility, normally dug into the ground, containing freshwater for the purpose of fish farming.

Freshwater Raceways A channel or series of channels, containing freshwater, normally constructed of concrete, containing fish for the purpose of fish farming.

Freshwater Tanks A tank, containing freshwater, normally constructed of steel or glass reinforced plastic, containing fish for the purposes of fish farming.

Foreshore In Scotland this is the area falling between the lines of Mean Low Water Spring (MLWS) and Mean High Water Spring (MHWS) as defined by Ordnance Survey.

FSS - Food Standards Scotland Food Standards Scotland (FSS) is the public sector food body for Scotland. FSS was established by the Food (Scotland) Act 2015 as a non-ministerial office, part of the Scottish Administration, alongside, but separate from, the Scottish Government.

Furunculosis A disease of fish, caused by the bacterium Aeromonas salmonicida.

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G

Gate Notice A legal notice, served under the terms of the Diseases of Fish (Control) Regulations 1994, for the purpose of controlling the spread of diseases of fish by restricting the movement of personnel, dead fish and equipment onto or from a fish farm site. This is a historic term and this regulation is no longer in force.

Grower Fish Fish held on a fish farm site for ongrowing to harvest weight for supply to the market.

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H

Health Surveillance Frequency The frequency at which visits are made to an aquaculture facility for health inspections by Marine Scotland.

HPLC - High Performance Liquid
Chromatography
High Performance Liquid Chromatography is a chemical-based (chromatographic) technique that can separate a mixture of compounds and is used to identify, quantify and purify the individual components of the mixture. The test is used within Food Standards Scotland's Biotoxin Monitoring Programme to detect and quantify the presence of toxins.

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I

Inactive Site An aquaculture site that will not be in operation for the foreseeable future and/or has not been producing in the last 3 years. This status may be changed by the owner or operator, subject to authorisation being granted by MS.

Infectious Pancreatic Necrosis A disease of fish caused by the infectious pancreatic necrosis virus.

Initial Designation Order A legal notice designating an identified area as suspected of being infected or may become infected with a listed disease served under the terms of regulation 24 of the Aquatic Animal Health (Scotland) Regulations 2009. The purpose of the notice is to control the movement of fish, equipment or any other material that may lead to the spread of fish disease.

ISA – Infectious Salmon Anaemia A disease of salmonid fish caused by the infectious salmon anaemia virus.

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J

No entries at present

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K

No entries at present

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L

LC-MS Liquid Chromatography-Mass Spectrometry is a technique that can separate a mixture of compounds and is used to identify, quantify and purify the individual components of the mixture. The test is used within Food Standards Scotland's Biotoxin Monitoring Programme to detect and quantify the presence of toxins.

Lease/Lease Agreement A legal agreement whereby an area of land (foreshore or seabed) is occupied by a third party (known as a 'tenant') for an agreed purpose, such as fish farming, and which gives consent for the tenant to develop the fish farm on the lease site(s), if other required permissions are gained.

Lease Equipment The maximum fish farming equipment set out in the lease and allowed to be used within the boundary of the site(s) at any one time.

Lease Reference The identification code used by The Crown Estate referring to lease agreements in Scotland for areas of foreshore or seabed for particular activities, including aquaculture.

Lease Site The particular area(s) of foreshore or seabed leased for the purposes of farming finfish or shellfish.

Licence Holder Responsible person under licence The person who is responsible for ensuring compliance with the terms of the licence. This can be an individual, a partnership or a company.

Licensed Species One or more species of fish that can be farmed on the site, as authorised in the CAR licence issued by SEPA.

Licensed Treatments Products which are authorised by SEPA to be used on fish farm sites for the control of sealice. The maximum treatment quantity of each product that can be used at each site is set out in the CAR licence.

Lingulodinium polyedrum A secies of dinoflagellate that may be a producer of saxitoxin, which can accumulate in bivalves and may cause Paralytic Shellfish Poisoining.

Linked Licences Conditions set out in the CAR licence issued by SEPA that are linked to activities at other sites. For example, sites which must be used in rotation, or a maximum weight of fish that can be held across a group of sites at any one time.

Locational GuidelinesGuidelines created by Marine Scotland to describe areas designated on the basis of Marine Scotland Science predictive modelling to estimate nutrient enhancement and benthic impact in sea lochs or similar water bodies supporting aquaculture. Used in the initial stages of the aquaculture planning process to assess whether a particular body of seawater is a suitable area for a proposed aquaculture development with regard to environmental sensitivity of the sea loch.

LTs - Lipophilic Toxins Lipophilic Toxins (OA/DTXs, PTXs, YTXs and AZAs) are tested for within Food Standards Scotland's Biotoxin Monitoring Programme.

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M

Marine Finfish Aquaculture The ongrowing of marine finfish species in fish farms.

Marine Scotland A Directorate of The Scottish Government, responsible for the integrated management of Scotland's Seas.

Marine Scotland Management Area (also known as disease management areas) Management Areas defined by Marine Scotland are used for the control of outbreaks of notifiable fish diseases in the marine environment. Management areas are developed around active finfish seawater sites only. Shellfish sites will be listed under a management area if they are within the boundaries of an existing management area zone. However, this is solely to aid communication with shellfish farmers in a disease outbreak situation, they do not influence the creation of management area zones.

Marine Scotland Science A department of Marine Scotland providing scientific and technical support to The Scottish Government.

Maximum Biomass (permitted on site) The maximum weight of fish that can be held on site at any time, as authorised in the CAR Licence issued by SEPA.

Maximum Cumulative Biomass (on linked consents) A condition in the CAR licence that states that the maximum weight of fish contained on a group of sites cannot exceed a certain combined amount.

Maximum Treatment Quantity The maximum quantity of a sealice chemical authorised to be administered in one treatment.

Metabolite A substance that takes part in or is produced during metabolism.

Microhygiene Monitoring Monitoring for the presence of bacteriological organisms that can give rise to human health problems.

Molluscs Any invertebrate of the phylum Mollusca, having a soft unsegmented body and often a shell, secreted by a fold of skin (the mantle). The group includes bivalves (clams, mussels).

Monitoring Category The CAR licence for each site requires that a seabed monitoring survey is carried out by the operator during each production cycle and submitted to SEPA for evaluation. Depending on the size and location of the site, different categories of monitoring apply. A standard monitoring survey requires samples to be taken at the cage edge and at 25 metres from the cage. An extended monitoring survey requires additional samples to be taken at 50 metres. Sampling points for a site-specific survey are determined by a modelling process that predicts the area of the seabed that will be affected by the fish farm site. All surveys must also include samples from two reference stations situated between 500 metres and 1 kilometre from the site.

Monitoring Method The method used to monitor the condition of the seabed around the fish farm site. Methods include benthic surveys, which involve taking grab-samples of the sediment of the seabed and visual surveys carried out by dropping a camera and taking video or still photographs of the seabed.

Mortalities The weight of dead fish that have been removed from the cages during the month. This figure does not include fish that have been harvested as production.

Movement Restriction Notice A legal notice or order served or placed to prevent the spread of aquatic animal diseases by restricting the movement of live or dead fish, and other items of equipment or personnel that pose a risk of transferring infection out of a designated infected area.

Multi-trophic Aquaculture Integrated multi-trophic aquaculture (IMTA) provides the by-products, including waste, from one aquatic species as inputs (fertilizers, food) for another.

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N

Nautical Mile A unit of length, by international agreement exactly 1,852 metres, commonly used in international law and treaties, especially regarding the limits of territorial waters.

ND – Not Detected Not detected means that no traces of the active ingredients emamectin benzoate or teflubenzuron were found in seabed sediment samples taken at fish farm sites following sealice treatments.

Not in operation for foreseeable future See Inactive

Notifiable Fish Disease A disease of fish, shellfish or crustaceans listed in annex IV part 2 of Directive 2006/88 and those listed in schedule 1 of the Aquatic Animal Health (Scotland) Regulations 2009 , the presence or the suspicion of the presence of which is required to be reported to the competent authority which is Marine Scotland.

Nutraceuticals Food or food product that reportedly provides health and medical benefits, including the prevention and treatment of disease.

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O

OA - Okadaic Acid Lipophilic toxin (LT) that accumulates in bivalves and causes diarrhetic shellfish poisoning (DSP).

OA/DTXs/PTXs (test) Okadaic Acid/Dinophysistoxins/Pectenotoxins - are all Lipophilic Toxins (LTs) tested for within Food Standards Scotlands' Biotoxin Monitoring Programme.

Official Control Sample A verified shellfish or water sample taken by Food Standards Scotland's sampling officers, for the purposes of Food Standards Scotland's Official Control monitoring programmes.

Opening Sample Within Food Standards Scotland's biotoxin monitoring programme, the second sample, from an area covered by a temporary closure notice (TCN), below the statutory limits for all three toxins as stipulated in EU Regulation 854/2004. Openings (lifting of a TCN) can be determined by at least two consecutive results below the statutory limit.

Operator An aquaculture production business that is farming fish, shellfish, crustaceans, or shellfish on an aquaculture site.

Operator Transfer The change in operator of an aquaculture production site or business.

Ova Female gametes; egg cells.

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P

Plankton The collection of small or microscopic organisms, including algae and protozoans, that float or drift in great numbers in fresh or salt water, especially at or near the surface, and serve as food for fish and other larger organisms.

Planning Permission The permission required in the United Kingdom in order to be allowed to build on land, or change the use of land. In Scotland, planning permission is required for marine aquaculture developments, and the land in such cases is the foreshore and seabed.

Phytoplankton Phytoplankton are single-celled microscopic algae which can produce toxins that accumulate in shellfish. Shellfish that feed on some of these algae can be rendered toxic and pose a health risk to people that eat them.

POD A cluster of classified production areas of similar hydrographical and environmental characteristics used within the Food Standard Agency in Scotland's biotoxin monitoring programme. Each POD contains a Representative Monitoring Point (RMP) that covers all Associated Harvesting Areas (AHAs) within the cluster.

Production The output from an aquaculture site – including the provision of fish or shellfish for human consumption, the provision of fish for restocking or enhancing fisheries, the provision of juvenile fish or shellfish for ongrowing on another aquaculture site or the provision of ova for hatching elsewhere.

Prorocentrum lima Prorocentrum lima can cause Diarrhetic Shellfish Poisoning (DSP) and is tested for within Food Standards Scotland's Phytoplankton Monitoring Programme.

Prorocentrum minimum A species of dinoflagellate and producer of hepatotoxin, which may accumulate in bivales and can cause shellfish poisoning.

Protoceratium reticulatum A species of dinoflagellate and producer of yessotoxin, which may accumulate in bivalves and can cause shellfish poisoning.

Pseudo-nitzschia Sp. Pseudo-nitzschia can cause Amnesic Shellfish Poisoning (ASP) and is tested for within Food Standards Scotland's Phytoplankton Monitoring Programme.

PSP - Paralytic Shellfish Poisoning Paralytic Shellfish Poisoning is a foodborne intoxication associated with the consumption of contaminated shellfish, harvested from waters affected by toxins that are produced by dinoflagellates of the genus Alexandrium.

PSP by MBA A Biological Assay test for Paralytic Shellfish Poisoning. Occasionally used in Food Standards Scotland's Shellfish Monitoring Programme for unvalidated testing methods.

PSP HPLC Quant A test for Paralytic Shellfish Poisoning using High Performance Liquid Chromatography within the Food Standards Scotland Biotoxin Monitoring Programme.

PSP Screen HPLC A test for Paralytic Shellfish Poisoning using High Performance Liquid Chromatography within the Food Standards Scotland Biotoxin Monitoring Programme.

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Q

No entries at present

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R

Receiving Water The body of water in which a fish farm site is located.

Registration (with Marine Scotland) The process of registering a non-commercial undertaking, a put and take fishery, or a specialist transport business with the competent authority, as required by regulation 12 of The Aquatic Animal Health (Scotland) Regulations 2009. Prior to these regulations and the authorisation process, registration was required for all aquaculture production facilities and it is this form of registration that is referred to in the site details under Date Registered.

Replicate A sample of the seabed sediment taken at a fish farm site will normally consist of more than one part, each being referred to as a replicate.

RMP - Representative Monitoring Point A specified geographical grid location set by Food Standards Scotland from which samples are taken to represent either a single, or several, wild bivalve mollusc beds or aquaculture sites.

Residue Trace of a chemical compound found in the seabed sediment following discharge of the chemical.

Responsible person under licence See Licence Holder

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S

Salmon fresh water stages Any of the juvenile stages of Atlantic salmon (Salmo salar L.), which would include green or eyed ova, alevins, fry, parr or smolts.

Salmosan Topical bath treatment containing the active ingredient azamethiphos. Used for the control of mature pre-adult to adult sealice on farmed Atlantic salmon.

SAMS Scottish Association for Marine Science.

Sample (Shellfish Monitoring) Shellfish or water sample collected as part of Food Standards Scotland's official control monitoring programmes.

Sample (Sealice Treatment Residue) A sample of the sediment from the seabed in the vicinity of fish farms taken for analysis to determine the concentration of sealice treatment residues.

Sample Classification (Shellfish Monitoring) The classification status of a sample result (A, B or C) taken within the Food Standard Agency in Scotland's Microhygiene official control monitoring programme.

Sample Grid Reference (Shellfish Monitoring) National Grid Reference (NGR) of sample collection point (to an accuracy of 10m).

Sampling Plan (Shellfish Monitoring) A formal record of the intended sampling to be undertaken in a harvesting area with respect to species, position of sampling points and frequency of sampling as part of Food Standards Scotlands' Monitoring Programme. The components of the sampling plan are identified following the sanitary survey carried out on the harvesting area.

Sanitary Survey (Shellfish Monitoring) An evaluation of the sources of faecal contamination in or near a harvesting area, together with an assessment of the potential impact of these sources on the microbial status of the harvesting area which is carried out on behalf of Food Standards Scotland.

Seabed In Scotland, seabed refers to the bed of the sea below the line of Mean Low Water Springs (MLWS), as defined by the Ordnance Survey.

Sealice Crustacean ecto-parasites of fish. In a Scottish context, lice of the species Lepeoptherius salmonis or Caligus elongates. Parasitic crustaceans that feed on the mucus, skin and blood of marine fish, affecting the health and the appearance of the host fish.

Sealice Treatment/Theraputant Type of product used to control infestations of sealice at marine fish farm sites.

Sealice Treatment Residue If in-feed sealice treatments have been used on a fish farm site, then sediment samples must be taken and analysed for residues of the active ingredients emamectin benzoate or teflubenzuron. Results of the analysis are submitted to SEPA.

Seawater Beds Areas of the foreshore or seabed where shellfish grow naturally or are cultured.

Seawater Cages A floating pen, normally constructed of plastic or metal, supporting a meshed net containing fish for the purpose of fish farming, located in seawater.

Seawater Hatchery A facility used for the holding and hatching of fish ova, using seawater.

Seawater Long Lines An arrangement of ropes, floats and weights placed in seawater to provide an artificial substrate for the cultivation of some species of shellfish.

Seawater Raceways A channel or series of channels, containing seawater, normally constructed of concrete, containing fish for the purpose of fish farming.

Seawater Rafts A floating structure, normally constructed of wood and steel, from which ropes are suspended into the sea, to provide an artificial substrate for the cultivation of some species of shellfish.

Seawater Tanks A tank, containing seawater, normally constructed of steel or glass reinforced plastic, containing fish for the purposes of fish farming.

Seawater Trestles or Trays Wooden or metal structures, placed on the foreshore, used to support mesh bags containing shellfish, usually oysters, for ongrowing.

SEPA – Scottish Environment Protection Agency The body responsible for environmental regulation in Scotland.

SEPA Survey Classification Seabed monitoring surveys are carried out by marine fish farm operators and submitted to SEPA for evaluation. The result of the evaluation is a classification of either satisfactory, unsatisfactory or borderline. A satisfactory or borderline classification indicates that environmental quality standards are being met at the site in question.

SEPA Team One of the SEPA Operations Teams dealing with the regulation and monitoring of fish farms around the country.

Shellfish Adults/Saleable Size Adult shellfish that are large enough to be offered for sale.

Shellfish Aquaculture The raising of shellfish from the juvenile state in controlled conditions. The production of shellfish in a managed environment, enhancing production beyond that which would normally be achieved naturally.

Shellfish Growing Water Areas A number of areas around the coast are designated as "Shellfish Growing Waters". European Directives place requirements on Member States to protect water quality where shellfish are produced for human consumption. SEPA undertakes monitoring and classification of these waters in conjunction with Food Standards Scotland.

Shellfish Growing Water Monitoring Points There are a number of coastal areas designated as Shellfish Growing Waters, European Directives place requirements on Member States to protect water quality where shellfish are produced for human consumption. SEPA undertakes monitoring and classification of Shellfish Growing Waters in conjunction with Food Standards Scotland, the sampling points are known as Shellfish Growing Waters Monitoring Points.

Shellfish Harvesting Area In reference to Food Standards Scotlands' Shellfish Monitoring Programme, any sea, estuarine or lagoon area, containing either natural beds of bivalve molluscs or sites used for the cultivation of bivalve molluscs, and from which live bivalve molluscs are taken.

Shellfish Juveniles/Growers Juvenile shellfish that are being ongrown, but which have not yet reached a saleable size.

Shellfish Production Area In reference to Food Standards Scotlands' Shellfish Monitoring Programme, any sea, estuarine or lagoon area, containing either natural beds of bivalve molluscs or sites used for the cultivation of bivalve molluscs, and from which live bivalve molluscs are taken.

Shellfish Spat The very early developmental stages of bivalve shellfish.

Shoreline Survey A physical survey of the shoreline and the area adjacent to the shore to confirm the presence of potentially contaminating sources first identified through a desk-based study, and to identify additional potential sources of contamination.

SIN – Site Identification Number The unique reference number used by Food Standards Scotland for a shellfish harvesting area.

Site A facility or group of facilities for the production of aquaculture which are operated as a single entity by an aquaculture production business.

Site Category This refers to the nature of the intended use of a leased area (site) of seabed belonging to The Crown Estate, and in the case of aquaculture indicates the consented species of fish or shellfish for cultivation.

Site Equipment The maximum fish farming equipment specified in the lease of an area of seabed and allowed to be deployed within the boundary of the site(s) at any one time.

Site Facilities The facilities, such as cages, tanks, ponds or raceways which together are grouped together to constitute a site.

Site Water The name of the water body in which a leased aquaculture site is located, such as a Loch, Sound, Voe or Bay.

Slice The trade name of a medicated feed product containing the active ingredient emamectin benzoate. Used for the control of sealice on farmed Atlantic salmon.

Smolt A young salmon at the stage when it migrates from fresh water to the sea.

Species Area Classification Annual species-specific classification given to a shellfish harvesting area by Food Standards Scotland once sufficient samples have been submitted within the Microhygiene official control monitoring programme.

Staff Prohibition Notice A legal notice served under Regulation 30(4) of the Aquatic Animal Health (Scotland) Regulations 2009 ("the 2009 Regulations"). It gives powers to an inspector to prohibit any person from entering any designation area unless consented in the Staff Prohibition Notice. This would be served when the presence of a notifiable disease is confirmed or suspected at a site and there is a requirement to control the movement of people into and out of the controlled area to limit risk of spreading disease.

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T

TCN – Temporary Closure Notice An administrative notice issued by the Local Authority, closing all shellfish harvesting areas within a POD where the presence of biotoxins above the regulatory limit has been identified by the Food Standards Scotland Biotoxin Monitoring Programme.

Tenant The legal party entering into a lease for an area of foreshore and/or seabed.

Teflubenzuron The active ingredient in the trade product Calicide, used for the control of sealice on farmed Atlantic salmon.

Total Allowable Quantity A notional maximum amount of a sealice treatment that, if discharged following a single treatment, will (according to a computer model) achieve compliance with environmental quality standards.

Toxin Poisonous substance produced by plankton in the water that can be concentrated in filter-feeding bivalve mollusc shellfish.

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U

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V

Viral haemorrhagic septicaemia A disease of fish, caused by the viral haemorrhagic septicaemia virus.

Voe A small bay or narrow creek.

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W

Wild Harvest Area A classified harvest area which is not a managed aquaculture site and may be exploited by more than one harvester.

Withdrawal Notice Notices issued under the Aquatic Animal Health Regulations 2009 which revoke existing Movement Restrictions.

Wrasse Fish of the Wrasse family. In Scottish waters these would include the Ballan, Corkwing, Cuckoo and Goldsinny wrasse and the Rockcook. Some species of wrasse are known as cleaner fish, performing grooming functions for other species of fish and feeding on what they remove. Wrasse may be employed as cleaner fish to combat sealice infestation in salmon farms.

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X

No entries at present

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Y

YTXs - Yessotoxins Lipophilic toxin (LT) tested for within the Food Standard Agency in Scotland's Biotoxin Monitoring Programme.

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Z

No entries at present