Discard survival in Trammel net and Danish seine

Rasmus Em Andersen, Katrine Molbo, Trine Hammer Jensen, Sergey V. Kucheryavskiy, Iben W Rathje, Peter Rask Møller, Niels Madsen

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

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Abstrakt

European plaice (Pleuronectes platessa) is a key species for Danish commercial and recreational fishing. A discard ban in the reformed European Union’s Common Fisheries Policy includes the possibility of exempting from the landing obligation “species for which scientific evidence demonstrates high survival rates”. Although smaller coastal fishing vessels make up a substantial part of the commercial Danish fishing fleet, discard survival in plaice from these vessels is not well studied. To address this issue, a study on discard survival in plaice from trammel net and Danish Seine was established as a cooperation between Aalborg University, Copenhagen University and Foreningen for Skånsomt Kystfiskeri. Methodology was developed to collect, assess and observe discard survival in plaice from trammel net and Danish Seine. Experiments were conducted in 2017 and 2018 from three commercial coastal fishing vessels. Livewells were designed to house captured individuals for up to 11 days for observation of short-term survival rate. Catch-damage-index (CDI) and Reflex Action Mortality Predictor (RAMP) were used to assess fish condition immediately after capture and at the end of the observation periods. Results showed 100% survival rate in plaice from trammel net and 87% survival rate in plaice from Danish Seine. For the majority of fish assessed after capture, reflex impairments were absent and injuries were primarily minor bruises, fin fraying, and net marks. Assessments of injuries and reflex impairments after observation showed the condition of the fish generally did not worsen during the observation periods. The project is financed by the European Fisheries Fund and the Ministry of Environment and Food of Denmark.
OriginalsprogEngelsk
Publikationsdato23 jan. 2019
Antal sider1
StatusUdgivet - 23 jan. 2019
BegivenhedDet 20. Danske Havforskermøde - Syddansk Universitet, Odense, Danmark
Varighed: 23 jan. 201925 jan. 2019
https://www.dhm2019.dk/

Konference

KonferenceDet 20. Danske Havforskermøde
LokationSyddansk Universitet
LandDanmark
ByOdense
Periode23/01/201925/01/2019
Internetadresse

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