Physical influences on the stock dynamics of plaice and sole in the North Sea

Wegner, Gerd; Damm, Ulrich; Purps, Martin

doi:10.3989/scimar.2003.67s1219

Cited by 22 publications

(11 citation statements)

References 71 publications

(104 reference statements)

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“…Some important stocks, including North Sea cod (Gadus morhua) and plaice (Pleuronectes platessa), produce fewer recruits in years when winter sea surface temperature is warm (Planque and Frédou, 1999;van der Veer and Witte, 1999;O'Brien et al, 2000;Clark et al, 2003;Wegner et al, 2003), and this may be related to changes in plankton populations on which larval fish feed (Beaugrand et al, 2003). Hence, declining stock size might be expected if there is a warming trend in ocean climate.…”

Section: Introductionmentioning

confidence: 96%

The implications of warming climate for the management of North Sea demersal fisheries

Cook

Heath

2005

ICES Journal of Marine Science

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Since the 1950s, records from the North Sea show a gradual increase in temperature. Using temperature as a proxy indexing the state of the environment, relationships between recruitment, spawning-stock biomass, and temperature are investigated for major North Sea stocks. Cod, plaice, and sole exhibit significant negative relationships between temperature and recruitment, while there is evidence of a positive effect for saithe and whiting. Stock-recruitment models that incorporate temperature are developed and used to examine implications for the management of these stocks with small increases in mean winter sea surface temperature. These suggest that for cod, minimum safe biomass reference points are unlikely to be achieved even at fishing mortality rates that are considered safe. The same analysis suggests that sustainable fishing for cod is still possible with higher yields than have been experienced in recent years. Crow

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Section: Introductionmentioning

confidence: 96%

The implications of warming climate for the management of North Sea demersal fisheries

Cook

Heath

2005

ICES Journal of Marine Science

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“…Conversely, various characteristics point to potential subpopulations: diVerences in life history traits (e.g., number and size of the eggs) exist among subpopulations across a latitudinal gradient (Rijnsdorp and Vingerhoed 1994;Witthames et al 1995) and plankton surveys indicate distinct spawning aggregations. In the North Sea, these spawning hotspots are situated in the inner German Bight, in the Eastern English Channel, oV the Belgian coast, in the Thames estuary and on the Norfolk Banks (Borremans 1987;De Clerck and Van de Velde 1973;Rijnsdorp et al 1992;Wegner et al 2003). The peak of spawning is from March in the Bay of Biscay to May-June in the south-eastern North Sea and Irish Sea (Symonds and Rogers 1995).…”

Section: Introductionmentioning

confidence: 97%

Multi-marker estimate of genetic connectivity of sole (Solea solea) in the North-East Atlantic Ocean

et al. 2012

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A thorough knowledge on the genetic connectivity of marine populations is important for Wsheries management and conservation. Using a dense population sampling design and two types of neutral molecular markers (10 nuclear microsatellite loci and a mtDNA cytochrome b fragment), we inferred the genetic connectivity among the main known spawning grounds of sole (Solea solea L.) in the North-East Atlantic Ocean. The results revealed a clear genetic structure for sole in the North-East Atlantic Ocean with at least three diVerent populations, namely the Kattegat/Skagerrak region, the North Sea and the Bay of Biscay, and with indications for a fourth population, namely the Irish/Celtic Sea. The lack of genetically meaningful diVerences between biological populations within the southern North Sea is likely due to a large eVective population size and suYcient connection (gene Xow) between populations. Nevertheless, an isolation-by-distance pattern was found based on microsatellite genotyping, while no such pattern was observed with the cytochrome b marker, indicating an historical pattern prevailing in the latter marker. Our results demonstrate the importance of a combined multimarker approach to understand the connectivity among marine populations at region scales.

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“…The southern Bay of Biscay is strongly affected by global warming, with an increase of surface water temperature of ~1.5°C over the period 1972 to 1993 (Koutsikopoulos et al 1998). Water temperature is known to influence survival of fish (Wegner et al 2003), and, thus, the southern Bay of Biscay, representing the southern limit of the distribution of whiting, could be a particularly relevant site to explore the possibility of local adaptation to thermal stress.…”

Section: Perspectives For Future Managementmentioning

confidence: 99%

Genetic structure of whiting Merlangius merlangus in the northeast Atlantic and adjacent waters

Charrier¹,

Coombs²,

McQuinn³

et al. 2007

Mar. Ecol. Prog. Ser.

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Accurate identification of stock boundaries is essential for efficient fisheries management; hence, the present study focused on the genetic structure of whiting. To this aim, 488 individuals collected from the southern Bay of Biscay to the southern Norwegian coast were genotyped using 7 microsatellites. A low level of genetic structuring was detected in Atlantic waters; only the Bay of Biscay differentiated from more northern samples. The lack of genetic structure along the western margin of the British Isles is consistent with a high level of passive transport of pelagic eggs and larvae due to the combined influence of the North Atlantic Current and the Shelf Edge Current. High levels of dispersal could also occur between the western British Isles and the North Sea through both the branching of the North Atlantic Current into the northern North Sea and the residual current flowing from the English Channel to the Southern Bight. In contrast, a significant genetic structure was identified within the North Sea, and this may be associated with the complex oceanography of this basin and retention systems reducing larval dispersal. In addition, considering also genetic, phenotypic and tag-recapture data collected on whiting, a learned homing behaviour of adults toward spawning areas may be hypothesised. KEY WORDS: Whiting · Merlangius merlangus · Microsatellites · Genetic structure · Larval dispersalResale or republication not permitted without written consent of the publisher

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Physical influences on the stock dynamics of plaice and sole in the North Sea

Cited by 22 publications

References 71 publications

The implications of warming climate for the management of North Sea demersal fisheries

The implications of warming climate for the management of North Sea demersal fisheries

Multi-marker estimate of genetic connectivity of sole (Solea solea) in the North-East Atlantic Ocean

Genetic structure of whiting Merlangius merlangus in the northeast Atlantic and adjacent waters

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