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Modelling fishing‐induced evolution in pikeperch (Sander lucioperca) and vendace (Coregonus albula), Lake Oulujärvi, as template for ecosystem model.

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Title: Modelling fishing‐induced evolution in pikeperch (Sander lucioperca) and vendace (Coregonus albula), Lake Oulujärvi, as template for ecosystem model.
Authors: Kokkonen, Eevi1,2 (AUTHOR) eevi.kokkonen@uef.fi, Perälä, Tommi2 (AUTHOR), Härkönen, Laura S.3,4 (AUTHOR), Hyvärinen, Pekka3 (AUTHOR), Kuparinen, Anna2 (AUTHOR)
Source: Journal of Fish Biology. Jul2025, Vol. 107 Issue 1, p229-247. 19p.
Subjects: Fish evolution, Gillnetting, Freshwater fishes, Trawling, Lakes, Natural selection
Abstract: Fishing‐induced evolution can impact fish trait distributions, with previous studies highlighting declines in size and age at maturation. However, the effects on fish growth remain less understood, and different fishing methods may exert distinct selection pressures on populations. This study explores the impact of gillnetting on pikeperch (Sander lucioperca, Percidae) and trawling on vendace (Coregonus albula, Coregonidae) modelled using data‐based normally distributed selection curves and the Allometric Trophic Network with Evolution model (Perälä & Kuparinen). Simulating evolutionary changes caused by fishing, we specifically examined the parameters of the von Bertalanffy model, including asymptotic length L∞ and Brody's growth coefficient k. In the model we simulated a negative correlation (−0.7) between asymptotic length and Brody's growth coefficient. We investigated the effects of parameters related to genotypic and phenotypic variance and the amount of correlation between asymptotic length and Brody's growth coefficient in the model using sensitivity tests. Trawling induces evolution in C. albula towards smaller asymptotic length, whereas Brody's growth coefficient stays at intermediate levels. The results for C. albula were consistent across different levels of correlation. Gillnetting of S. lucioperca results in evolution in asymptotic length and Brody's growth coefficient in variable directions. Frequently, S. lucioperca evolved towards larger size and growth, but depending on parametrization, selection can also be disruptive, or S. lucioperca may evolve towards smaller size and growth. The amount of genotypic and phenotypic variance also influences these outcomes, whereas instantaneous fishing mortality impacts biomasses across the food web. This study underscores the significance of considering fishing‐induced evolution, its impact on fish growth and food web–level effects, in addition to the densities of targeted species. Such insights are crucial for a comprehensive understanding of the ecological consequences of fishing practices. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Fish Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Modelling fishing‐induced evolution in pikeperch (Sander lucioperca) and vendace (Coregonus albula), Lake Oulujärvi, as template for ecosystem model.
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  Data: <searchLink fieldCode="AR" term="%22Kokkonen%2C+Eevi%22">Kokkonen, Eevi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> eevi.kokkonen@uef.fi</i><br /><searchLink fieldCode="AR" term="%22Perälä%2C+Tommi%22">Perälä, Tommi</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Härkönen%2C+Laura+S%2E%22">Härkönen, Laura S.</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hyvärinen%2C+Pekka%22">Hyvärinen, Pekka</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kuparinen%2C+Anna%22">Kuparinen, Anna</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Fish+Biology%22">Journal of Fish Biology</searchLink>. Jul2025, Vol. 107 Issue 1, p229-247. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Fish+evolution%22">Fish evolution</searchLink><br /><searchLink fieldCode="DE" term="%22Gillnetting%22">Gillnetting</searchLink><br /><searchLink fieldCode="DE" term="%22Freshwater+fishes%22">Freshwater fishes</searchLink><br /><searchLink fieldCode="DE" term="%22Trawling%22">Trawling</searchLink><br /><searchLink fieldCode="DE" term="%22Lakes%22">Lakes</searchLink><br /><searchLink fieldCode="DE" term="%22Natural+selection%22">Natural selection</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Fishing‐induced evolution can impact fish trait distributions, with previous studies highlighting declines in size and age at maturation. However, the effects on fish growth remain less understood, and different fishing methods may exert distinct selection pressures on populations. This study explores the impact of gillnetting on pikeperch (Sander lucioperca, Percidae) and trawling on vendace (Coregonus albula, Coregonidae) modelled using data‐based normally distributed selection curves and the Allometric Trophic Network with Evolution model (Perälä & Kuparinen). Simulating evolutionary changes caused by fishing, we specifically examined the parameters of the von Bertalanffy model, including asymptotic length L∞ and Brody's growth coefficient k. In the model we simulated a negative correlation (−0.7) between asymptotic length and Brody's growth coefficient. We investigated the effects of parameters related to genotypic and phenotypic variance and the amount of correlation between asymptotic length and Brody's growth coefficient in the model using sensitivity tests. Trawling induces evolution in C. albula towards smaller asymptotic length, whereas Brody's growth coefficient stays at intermediate levels. The results for C. albula were consistent across different levels of correlation. Gillnetting of S. lucioperca results in evolution in asymptotic length and Brody's growth coefficient in variable directions. Frequently, S. lucioperca evolved towards larger size and growth, but depending on parametrization, selection can also be disruptive, or S. lucioperca may evolve towards smaller size and growth. The amount of genotypic and phenotypic variance also influences these outcomes, whereas instantaneous fishing mortality impacts biomasses across the food web. This study underscores the significance of considering fishing‐induced evolution, its impact on fish growth and food web–level effects, in addition to the densities of targeted species. Such insights are crucial for a comprehensive understanding of the ecological consequences of fishing practices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Fish Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1111/jfb.70028
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 19
        StartPage: 229
    Subjects:
      – SubjectFull: Fish evolution
        Type: general
      – SubjectFull: Gillnetting
        Type: general
      – SubjectFull: Freshwater fishes
        Type: general
      – SubjectFull: Trawling
        Type: general
      – SubjectFull: Lakes
        Type: general
      – SubjectFull: Natural selection
        Type: general
    Titles:
      – TitleFull: Modelling fishing‐induced evolution in pikeperch (Sander lucioperca) and vendace (Coregonus albula), Lake Oulujärvi, as template for ecosystem model.
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          Name:
            NameFull: Kokkonen, Eevi
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            NameFull: Perälä, Tommi
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            NameFull: Härkönen, Laura S.
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            NameFull: Hyvärinen, Pekka
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            NameFull: Kuparinen, Anna
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            – D: 01
              M: 07
              Text: Jul2025
              Type: published
              Y: 2025
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