Scottish Fish Farm Production Survey 2014

Appendix 2 Glossary and Abbreviations

Active
Fish farms in a production growing cycle which may contain stock or be fallow.

Alevin
Young fish, at stage from hatching to end of dependence on yolk sacs as primary source of nutrition.

Approved National Control Measures
Disease control measures in accordance with The Aquatic Animal Health(Scotland) Regulations 2009.

Broodstock
Adult fish held until maturation for breeding purposes.

Diploid
Fish with the normal two sets of chromosomes.

EEA
European Economic Area.

EFTA
European Free Trade Association.

ERM
Enteric redmouth disease.

EU
European Union.

Eyed-ova/eggs
Fish egg(s) at the stage of development when the heavily pigmented eyes of the embryo are sufficiently developed to be clearly visible.

Fallow
Fish farm having no stock, but still part of a growing cycle.

Fingerling
A term commonly applied to young stages of salmonid fish.

Fry
The life stage of a young salmon from independence of the yolk sac as the primary source of nutrition to dispersal from the redd.

Gamete
Reproductive cells.

Grilse
Salmon harvested between 1 ^st January and 31 ^st August after one winter at sea.

Intra-peritoneal
Within the body cavity.

IPN
Infectious pancreatic necrosis.

Non-producing
A site which is active, may be stocked with fish, but has produced no fish for harvest during the specified year.

On-growing
Farm producing fish for the table market.

Ova
Eggs.

0-year fish
Fish in their first year of life.

MSS
Marine Scotland Science.

Parr
Young salmon at stage from dispersal from redd to migration as a smolt.

PD
Pancreas disease.

Photoperiod
Alteration of the daylight regime.

Pre-salmon
Salmon harvested between 1 ^st September and 31 ^st December after one winter at sea.

Raceway
Concrete or brick channels used for farming fish.

SAV
Salmonid alphavirus.

S½
Salmon or sea trout smolting at approximately six months from hatch (usually by photoperiod and/or temperature manipulation).

S1
Salmon or sea trout smolting at approximately one year from hatch.

S1½
Salmon or sea trout smolting at approximately 18 months from hatch.

S2
Salmon or sea trout smolting at approximately two years from hatch.

Smolt
Fully silvered juvenile salmon ready to be transferred or to migrate to sea.

Third Country
Country outside the EU.

Triploid
Genetically modified fish that have three sets of chromosomes instead of two.

Year class
Fish hatched or put to sea in a given year.