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

Research output: Contribution to conference without publisher/journalPosterResearch

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Abstract

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.
Original languageEnglish
Publication date23 Jan 2019
Number of pages1
Publication statusPublished - 23 Jan 2019
EventDet 20. Danske Havforskermøde - Syddansk Universitet, Odense, Denmark
Duration: 23 Jan 201925 Jan 2019
https://www.dhm2019.dk/

Conference

ConferenceDet 20. Danske Havforskermøde
LocationSyddansk Universitet
CountryDenmark
CityOdense
Period23/01/201925/01/2019
Internet address

Fingerprint

Pleuronectes
survival rate
reflexes
Pleuronectes platessa
fishing boats
fisheries
fish
contusions
sport fishing
Denmark
European Union
fins

Keywords

  • Plaice
  • Discard survival
  • Fisheries

Cite this

Andersen, R. E., Molbo, K., Jensen, T. H., Kucheryavskiy, S. V., Rathje, I. W., Møller, P. R., & Madsen, N. (2019). Discard survival in Trammel net and Danish seine. 1. Poster session presented at Det 20. Danske Havforskermøde, Odense, Denmark.
Andersen, Rasmus Em ; Molbo, Katrine ; Jensen, Trine Hammer ; Kucheryavskiy, Sergey V. ; Rathje, Iben W ; Møller, Peter Rask ; Madsen, Niels. / Discard survival in Trammel net and Danish seine. Poster session presented at Det 20. Danske Havforskermøde, Odense, Denmark.1 p.
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abstract = "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 Sk{\aa}nsomt 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.",
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Andersen, RE, Molbo, K, Jensen, TH, Kucheryavskiy, SV, Rathje, IW, Møller, PR & Madsen, N 2019, 'Discard survival in Trammel net and Danish seine' Det 20. Danske Havforskermøde, Odense, Denmark, 23/01/2019 - 25/01/2019, pp. 1.

Discard survival in Trammel net and Danish seine. / Andersen, Rasmus Em; Molbo, Katrine; Jensen, Trine Hammer; Kucheryavskiy, Sergey V.; Rathje, Iben W; Møller, Peter Rask; Madsen, Niels.

2019. 1 Poster session presented at Det 20. Danske Havforskermøde, Odense, Denmark.

Research output: Contribution to conference without publisher/journalPosterResearch

TY - CONF

T1 - Discard survival in Trammel net and Danish seine

AU - Andersen, Rasmus Em

AU - Molbo, Katrine

AU - Jensen, Trine Hammer

AU - Kucheryavskiy, Sergey V.

AU - Rathje, Iben W

AU - Møller, Peter Rask

AU - Madsen, Niels

PY - 2019/1/23

Y1 - 2019/1/23

N2 - 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.

AB - 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.

KW - Plaice

KW - Discard survival

KW - Fisheries

M3 - Poster

SP - 1

ER -

Andersen RE, Molbo K, Jensen TH, Kucheryavskiy SV, Rathje IW, Møller PR et al. Discard survival in Trammel net and Danish seine. 2019. Poster session presented at Det 20. Danske Havforskermøde, Odense, Denmark.