Long-term changes in growth and population abundance of sole in the North Sea from 1940 to the present

Millner, Richard S.; Whiting, C. L.

doi:10.1006/jmsc.1996.0143

Cited by 76 publications

(58 citation statements)

References 21 publications

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“…For age groups up to Age 3, the mean length from market samples will be biased because small individuals may escape through the mesh or may be discarded if below minimum marketable size. Therefore, pre-recruit survey data and back-calculation data of Millner & Whiting (1996) were used (see Fig. 3a).…”

Section: Moving Time Windowmentioning

confidence: 99%

Fisheries-induced evolutionary changes in maturation reaction norms in North Sea sole Solea solea

Mollet

Kraak²,

Rijnsdorp³

2007

Mar. Ecol. Prog. Ser.

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Age and size at maturation decreased in several commercially exploited fish stocks, which, according to life history theory, may be due to fisheries-induced evolutionary change. However, the observed changes may also represent a plastic response to environmental variability. To disentangle phenotypic plasticity from evolutionary change, the probabilistic reaction norm approach was applied to 43 cohorts (1960 to 2002) of female sole Solea solea from market samples. The reaction norm for age and size at first maturation has significantly shifted towards younger age and smaller size. Size at 50% probability of maturation at Age 3 decreased from 28.6 cm (251 g) to 24.6 cm (128 g). This change was even stronger when condition was included as a third dimension in the reaction norm estimation. The influence of alternative factors was tested on the population level by regression of reaction norm midpoints on annual estimates of condition, temperature and competitive biomass. Although effects of temperature and competitive biomass were significant, the variation in the midpoints was best explained by the decreasing time trend. Therefore, the results provide strong evidence for a fisheries-induced evolutionary change in the onset of sexual maturity.

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Section: Moving Time Windowmentioning

confidence: 99%

Fisheries-induced evolutionary changes in maturation reaction norms in North Sea sole Solea solea

Mollet

Kraak²,

Rijnsdorp³

2007

Mar. Ecol. Prog. Ser.

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“…The increase in benthic production in the nurseries does not effect the growth rates of either species (Millner and Whiting, 1996). A long-term trend in mean length-at-age data is not stated for either of the 0-groups (Millner and Whiting, 1996).…”

Section: On Early Juvenilesmentioning

confidence: 91%

“…Enhanced food availability by intensified fisheries may cause the long-term increase in growth of 2-and 3-year old sole (de Veen, 1978 a). Changes in growth of young sole may depend on eutrophication, too; temperature seems to be a factor of lesser importance (Millner and Whiting, 1996). Different changes in growth between the age groups of plaice and sole were observed from the late 1950s to the late 1980s.…”

Section: On Juvenilesmentioning

confidence: 97%

“…The growth of both plaice and sole on the nursery grounds is not food-limited according to Millner and Whiting (1996). On the other hand, Berghahn et al (1995) found individual and local growth rates of 0-group plaice determined by differences in food quantity and quality due to bottom conditions.…”

Section: On Early Juvenilesmentioning

confidence: 99%

“…A long-term trend in mean length-at-age data is not stated for either of the 0-groups (Millner and Whiting, 1996). An inverse relationship between length and abundance of 0-group plaice seems to be determined by the temperature during egg stage (Zijlstra & Witte.…”

Section: On Early Juvenilesmentioning

confidence: 99%

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

Wegner¹,

Damm²,

Purps³

2003

Sci. Mar.

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SUMMARY: A review of the literature on influences of physical factors on plaice and sole stresses the prominent role of water temperature in all life stages of the species. For plaice, e.g., water temperatures on the spawning grounds are inversely correlated with year-class strength, and growth depends primarily on temperatures. In many instances, however, direct and indirect effects are hard to disentangle and to quantify for use in models, e.g. for stock assessment and prediction (SAP). Hydrodynamic circulation influences the egg and larvae distributions. Existing models reveal the drift variability to be of the same magnitude as year to year variations of larval abundance just before immigration. An improved modelling of the processes could combine recent circulation and transport models incorporating physical/biological properties of the eggs and larvae. It is suggested that future research focuses on this approach. The course of irradiation during spring and its influence on mortality of the 0-groups of both species in the nursery deserves further studies if it is to be useful for SAP.

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Ecosystem Effects of Fishing

Kaiser

Jennings²

2008

Handbook of Fish Biology and Fisheries, Volume 2

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Long-term changes in growth and population abundance of sole in the North Sea from 1940 to the present

Cited by 76 publications

References 21 publications

Fisheries-induced evolutionary changes in maturation reaction norms in North Sea sole Solea solea

Fisheries-induced evolutionary changes in maturation reaction norms in North Sea sole Solea solea

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

Ecosystem Effects of Fishing

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