ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on January 8, 2007
ICES Journal of Marine Science: Journal du Conseil 2007 64(2):332-345; doi:10.1093/icesjms/fsl035
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Migrations, fishery interactions, and management units of sea bass (Dicentrarchus labrax) in Northwest Europe
1 The Centre for Environment, Fisheries, and Aquaculture Science (Cefas), Pakefield Road, Lowestoft, Suffolk NR33 0HT, UK
2 69 Langstone Drive, Exmouth, Devon, EX8 4HZ, UK
3 IFREMER, Centre de Brest. Département Sciences et Technologies Halieutiques, Laboratoire Unité de Populations et des Peuplements, BP 70, 29280 Plouzané, France
Correspondence to M. G. Pawson: tel: +44 1502 524436; fax: +44 1502 526351; e-mail: mike.pawson{at}cefas.co.uk
Pawson, M. G., Pickett, G. D., Leballeur, J. Brown, M., and Fritsch, M. 2007. Migrations, fishery interactions, and management units of sea bass (Dicentrarchus labrax) in Northwest Europe. – ICES Journal of Marine Science, 64: 332–345.A total of 4959 sea bass was tagged between 2000 and 2005 around the coasts of England, Wales, southern Ireland, and the Channel Isles to investigate whether movement patterns documented in 1987 have changed and to estimate the level of competition for sea bass between inshore and offshore fisheries. Most (54%) of the recaptures of adult bass (fish >40 cm) tagged inshore and made between May and October were within 16 km of the release positions. From November on, an increasing proportion was recaptured at least 80 km south or southwest of tagging sites. Bass tagged on offshore spawning grounds in March and April showed reciprocal movement, 75% of recaptures between May and October being at least 80 km from the release site. These observations reaffirm the hypothesis that adult sea bass may move considerable distances to offshore winter spawning areas, but there was little evidence of the spawning migrations between the North Sea and the western Channel that were observed in the early 1980s. Just 3% of the recaptures of bass >36 cm tagged in UK inshore fisheries were reported from the offshore pairtrawl fishery, whereas half the recaptures of bass tagged in that fishery were made inshore along the UK coast. When weighted by the respective catches, this suggests that the effects of management measures implemented in the UK inshore fishery are largely restricted to that fishery. A proposal for stock units for assessment and management of NW European sea bass fisheries is presented.
Keywords: fishery interactions, migrations, sea bass, stock units, tagging
Received 8 August 2006; accepted 22 November 2006; advance access publication 8 January 2007.
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  M. G. Pawson, S. Kupschus, and G. D. Pickett The status of sea bass (Dicentrarchus labrax) stocks around England and Wales, derived using a separable catch-at-age model, and implications for fisheries management ICES J. Mar. Sci., March 1, 2007; 64(2): 346 - 356. [Abstract] [Full Text] [PDF]
|
|