Marine_Scotland_FishDAC_12491 eng dataset Scottish Government (Marine Scotland) +44 (0)300 244 4000 marinescotland@gov.scot pointOfContact 2024-04-16 MEDIN Discovery Metadata Version 2.3.7 urn:ogc:def:crs:EPSG::4326 OGP CodSELect - using light to improve cod selectivity in North sea Nephrops trawl gears - Behavioural aquarium tank trials 2024-04-08 publication Marine_Scotland_FishDAC_12491 This dataset contains all the laboratory tank trial data from the CodSELect project which aims to support North Sea Nephrops fishers with a new technical measure to reduce the capture of cod and maintain catch of their target species, which would allow improvements in sustainable catching, reduce discards and ultimately lead to a healthier, more sustainable UK fishing and seafood sector. There are seven datasets in total, 6 for cod and one for saithe measuring behavioural responses to a range of different artificial light parameters including blue, green, red and white constant light or strobing light with a frequency of 1 Hz at 5 or 50%. The distance of the fish from the light at set timepoints throughout the trial was used as the unit of measure and the light was generated using LED light pods and a coiled 20m length of fibre optic cable. All laboratory tank trials were carried out in the Marine Directorates aquarium facilities in Aberdeen. Scottish Government (Marine Scotland) +44 (0)300 244 4000 Mailpoint 11, Area 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot pointOfContact Scottish Government (Marine Scotland) +44 (0)300 244 4000 Mailpoint 11, Area 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot custodian Scottish Government (Marine Scotland) +44 (0)300 244 4000 Mailpoint 11, Area 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot distributor Scottish Government Area 1B North, Victoria Quay Edinburgh EH6 6QQ United Kingdom ceu@gov.scot originator Not Planned Marine Environmental Data and Information Network Fish behaviour Fishing by-catch SeaDataNet Parameter Discovery Vocabulary 2018-12-12 revision The following attribution statement must be used: Contains information from the Scottish Government (Marine Scotland) licensed under the Open Government Licence v3.0. otherRestrictions no limitations to public access 200.00 eng biota -2.075858 -2.06779 57.13745 57.13924 SeaDataNet vertical extent keywords 2010-01-01 revision There is no appropriate value 2022-11-16 2024-03-31 https://dx.doi.org/10.7489/12491-1 DOI:https://dx.doi.org/10.7489/12491-1 https://doi.org/10.7489/12491-1 download https://doi.org/10.7489/12491-1 download https://doi.org/10.7489/12491-1 download https://doi.org/10.7489/12491-1 download https://doi.org/10.7489/12491-1 download https://doi.org/10.7489/12491-1 download https://doi.org/10.7489/12491-1 download dataset CodSELect originated from previously observed behaviour of cod in a laboratory tank trial, completed by Marine Directorate (MD) as part of the Scottish Government, where cod showed a negative phototactic response to blue and green artificial light. CodSELect will investigate fish behaviour in relation to artificial light in a further series of tank trials measuring behavioural responses to a range of different artificial light parameters including blue, green, red and white constant light or strobing light with a frequency of 1 Hz at 5 or 50%. The tank trial work feeds into two sea trials investigating if the addition of artificial light to the bottom panel of a trawl gear would modify the natural behaviour of cod, to stay low down in the trawl where they remain relatively inactive, by encouraging cod to swim up, increasing encounter rates with a Square Mesh Panel (SMP) positioned above and subsequently increase escape attempts of cod.