Recruitment in flatfish, with special emphasis on North Atlantic species: Progress made by the Flatfish Symposia

Henk W. van der Veer, Rüdiger Berghahn, John M. Miller, Adriaan D. Rijnsdorp

Research output: Contribution to journalArticleAcademicpeer-review

151 Citations (Scopus)

Abstract

In summarizing the main results on recruitment that emerged from the series of Flatfish Symposia, two aspects were distinguished: mean level and interannual variability. Recruitment to a stock appears to be related to the quantity of juvenile nursery habitats, suggesting that either larval supply or the carrying capacity of the nurseries is the limiting factor. However, available information on growth of 0-group flatfish suggests that the carrying capacity of nursery areas is never reached. Variability in year-class strength is generated during the pelagic egg and larval stage, probably by variations in the hydrodynamic circulation and in the mortality rates of eggs and larvae. Density-dependent processes seem to occur only during the juvenile stages, particularly in respect of growth. However, no impact on recruitment variability has been found. Density-dependent mortality during the phase shortly after settlement dampens the interannual recruitment variability. There is no evidence of density-dependent effects in the adult phase at present, but these may have been important at lower levels of exploitation. The importance of the factors determining recruitment vary not only among species, but also over the species' range. It is suggested that damping processes can only occur in the demersal stage, implying that variability in year-class strength can only decrease in fish species with a demersal stage. If true, ultimate variability in recruitment in fish species will be related to the relative duration of the pelagic and demersal stages. (C) 2000 International Council for the Exploration of the Sea.

Original languageEnglish
Pages (from-to)202-215
JournalICES Journal of Marine Science
Volume57
Issue number2
DOIs
Publication statusPublished - 1 Apr 2000

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flatfish
Pleuronectiformes
carrying capacity
egg
mortality
fish
limiting factor
hydrodynamics
damping
larva
duration
larvae
habitat
habitats

Keywords

  • Control
  • Flatfish
  • Recruitment
  • Regulation
  • Year-class strength

Cite this

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title = "Recruitment in flatfish, with special emphasis on North Atlantic species: Progress made by the Flatfish Symposia",
abstract = "In summarizing the main results on recruitment that emerged from the series of Flatfish Symposia, two aspects were distinguished: mean level and interannual variability. Recruitment to a stock appears to be related to the quantity of juvenile nursery habitats, suggesting that either larval supply or the carrying capacity of the nurseries is the limiting factor. However, available information on growth of 0-group flatfish suggests that the carrying capacity of nursery areas is never reached. Variability in year-class strength is generated during the pelagic egg and larval stage, probably by variations in the hydrodynamic circulation and in the mortality rates of eggs and larvae. Density-dependent processes seem to occur only during the juvenile stages, particularly in respect of growth. However, no impact on recruitment variability has been found. Density-dependent mortality during the phase shortly after settlement dampens the interannual recruitment variability. There is no evidence of density-dependent effects in the adult phase at present, but these may have been important at lower levels of exploitation. The importance of the factors determining recruitment vary not only among species, but also over the species' range. It is suggested that damping processes can only occur in the demersal stage, implying that variability in year-class strength can only decrease in fish species with a demersal stage. If true, ultimate variability in recruitment in fish species will be related to the relative duration of the pelagic and demersal stages. (C) 2000 International Council for the Exploration of the Sea.",
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Recruitment in flatfish, with special emphasis on North Atlantic species: Progress made by the Flatfish Symposia. / van der Veer, Henk W.; Berghahn, Rüdiger; Miller, John M.; Rijnsdorp, Adriaan D.

In: ICES Journal of Marine Science, Vol. 57, No. 2, 01.04.2000, p. 202-215.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Recruitment in flatfish, with special emphasis on North Atlantic species: Progress made by the Flatfish Symposia

AU - van der Veer, Henk W.

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AB - In summarizing the main results on recruitment that emerged from the series of Flatfish Symposia, two aspects were distinguished: mean level and interannual variability. Recruitment to a stock appears to be related to the quantity of juvenile nursery habitats, suggesting that either larval supply or the carrying capacity of the nurseries is the limiting factor. However, available information on growth of 0-group flatfish suggests that the carrying capacity of nursery areas is never reached. Variability in year-class strength is generated during the pelagic egg and larval stage, probably by variations in the hydrodynamic circulation and in the mortality rates of eggs and larvae. Density-dependent processes seem to occur only during the juvenile stages, particularly in respect of growth. However, no impact on recruitment variability has been found. Density-dependent mortality during the phase shortly after settlement dampens the interannual recruitment variability. There is no evidence of density-dependent effects in the adult phase at present, but these may have been important at lower levels of exploitation. The importance of the factors determining recruitment vary not only among species, but also over the species' range. It is suggested that damping processes can only occur in the demersal stage, implying that variability in year-class strength can only decrease in fish species with a demersal stage. If true, ultimate variability in recruitment in fish species will be related to the relative duration of the pelagic and demersal stages. (C) 2000 International Council for the Exploration of the Sea.

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