Data/hora: 05/06/2024 00:59:20

Provedor de dados: | 5
País: | France
Título: | SELEDRAG : Etude comparative de la sélectivité des dragues à coquilles Saint-Jacques Pecten maximus
Autores: | Foucher, Eric; Quinquis, Jerome; Ton, Caroline.
Data: | 2020-03
Ano: | 2020
Palavras-chave: | Coquille Saint-Jacques; Pecten maximus; Manche Est; Baie de Seine; Sélectivité des dragues; Coquille Saint-Jacques; Pecten maximus; Manche Est; Baie de Seine; Sélectivité des dragues.
Resumo: | The SELEDRAG project was conducted in French territorial waters in May 2019. It was a short project, lead by the CNPMEM (French National Committee for Marine Fisheries), with Ifremer as scientific partner, and funded by “France Filière Pêche”. The context of the project is the French King Scallop fishery in the Eastern Channel, where 720 fishing boats are directly concerned by this species. Despite its importance, there is very little management for this species at the European level, but several binding rules for French fishermen in order to protect the stock, are not applicable to other countries. One of the French specificity is the ring size used, 92mm for all Scallop fisheries in France vs 85mm (or less) for UK fisheries. Another sharp divergence is the summer closure in France (from the 15th of May to the 30th of September) when there is no seasonal closure for UK boats which are allowed to fish all year long. In consequence, French fishermen would like to see these protective and effective stock management measures applied to all fleets operating in the Channel, beginning with a harmonization of the ring size to 92 mm. On the other hand, French fishermen organizations are in the process of further increasing the ring size of the dredges, from 92mm to 97mm by October, 2020. The aim of SELEDRAG project is to establish the correlation between the increase of the diameter of King scallop dredge ring size and the improvement of gear selectivity, and also to quantify the sorting gain in time and handling on board associated with the increase of the diameter of the dredge rings. 3 days of trials were done onboard “Le Tourville” fishing boat beginning of May 2019. The study proves that the selectivity of King scallop dredges increases with the diameter of the rings used (85, 92 and 97 mm). Selection is not so much on commercial size scallops (&gt; 110 mm overall width), but rather on undersized scallops which are better filtered with a wider mesh size. A large mesh size thus makes it possible to reduce the catches of under size scallops and waste (pebbles, rocks, dead shells, debris, brittle stars, etc.), in favor of commercial size scallops, with in addition a larger average size, and therefore reducing sorting time on the deck and hard labor for the crew. Regarding the fraction of scallops between 102 and 110mm, it appears that the dredge of 97mm has a slight catch reduction for these sizes. This could be considered as a yield loss for the scallops’ beds in Western English Channel where the European minimal catch size is 100 mm (102 mm in France). However, it should be noted that the use of this mesh will allow to keep a surplus of scallops which will continue to grow and will be captured during the next fishing season.
Tipo: | Text
Idioma: | Francês

Identificador:

https://archimer.ifremer.fr/doc/00614/72596/71590.pdf

DOI:10.13155/72596

https://archimer.ifremer.fr/doc/00614/72596/

Formato: | application/pdf

Fonte:

info:eu-repo/semantics/openAccess

restricted use