Length, age and estimated back-calculated length of pike (Esox lucius) in relation to water temperature from Lake Mälaren and the Swedish Baltic Sea archipelago 1963-2019 - Estimated backcalculated body growth of pike (Esox lucius) from environmental monitoring and commercial catches.

SND-ID: 2021-280-1. Version: 1. DOI: https://doi.org/10.5878/b9rd-6b38


Creator/Principal investigator(s)

Örjan Östman - Swedish University of Agricultural Sciences, Aquatic resources orcid

Terese Berggren - Swedish University of Agricultural Sciences, Aquatic resources

Göran Sundblad - Swedish University of Agricultural Sciences, Aquatic resources

Ulf Bergström - Swedish University of Agricultural Sciences, Aquatic resources

Research principal

Swedish University of Agricultural Sciences - Aquatic resources rorId

Principal's reference number



Data on estimated back-calculated body growth from both harvested and non-harvested populations of northern pike over 50 years along the Baltic Sea coast and in Lake Mälaren, Sweden. The aim is to study spatial and temporal variation in body growth, and especially how body growth relates to variation in water temperature. Data on surface water temperature from Kvädöfjärden (Batltic Sea) and Lake Mälaren during the study period. See detailed description of methods and analyses in the original article.

Length and age of pike from monitoring and commercial fisheries. Data include estimated length at age of individuals from backcalculations of wingbones.

Data contains personal data



Method and outcome

Time period(s) investigated

1963 – 2019

Biobank is connected to the study

This study has used existing samples from a scientific collection or biobank

Scientific collection or biobank name: Vävnad för åldersanalys på fisk (Databas Oden, SLU Akvatiska resurser)

Type(s) of sample: Wingbones from pike (Esox lucius)



Data format / data structure

Data collection
  • Description of the mode of collection: Aga determination and backcalculation of length at age from the wingbone of pikes collected from commercial fisheries during spawning.
  • Time period(s) for data collection: 1963 – 2019
  • Temporal resolution: 1 year
Geographic coverage

Geographic spread

Geographic location: Stockholm County, Östergötland County

Geographic description: Lake Mälaren and coastal area of Östergötland county

Administrative information

Responsible department/unit

Aquatic resources


  • Funding agency: Swedish Agency for Marine and Water Management rorId
  • Funding information: Decision Dnr 4637-18
Topic and keywords

Research area

Ecology (Standard för svensk indelning av forskningsämnen 2011)

Evolutionary biology (Standard för svensk indelning av forskningsämnen 2011)

Biota (INSPIRE topic categories)


Berggren, T., Sundblad, G., Bergström, U., Östman, Ö. 2022. Warmer water increases early body growth of northern pike (Esox lucius), but mortality has larger impact on decreasing body sizes. Canadian Journal of Fisheries and Aquatic Science, 79(5):771-781.
DOI: https://doi.org/10.1139/cjfas-2020-0386

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Published: 2022-02-03
Last updated: 2022-06-07