Publikation:

Human-induced changes in the reproductive traits of Lake Constance common whitefish (Coregonus lavaretus)

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2009

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Thomas, Gregor
Quoß, Helmut
Hartmann, Jürgen

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Published

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Journal of evolutionary biology. 2009, 22(1), pp. 88-96. ISSN 1010-061X. eISSN 1420-9101. Available under: doi: 10.1111/j.1420-9101.2008.01622.x

Zusammenfassung

Size-selective fishery harvest leads to phenotypic changes in fish reproductive traits. When these changes represent an evolutionary response of a stock, they may have severe consequences for future stock dynamics and yields. In freshwater ecosystems, reproductive traits may also be affected by other human impacts such as changes in system productivity. The present study uses regression analysis to evaluate the impacts of changes in lake trophy and of an intensive size-selective harvest over several decades on the reproductive traits of common whitefish in Lake Constance between 1963 and 1999. Fecundity was strongly linked to lake trophy but was also related to the calendar year, suggesting an evolutionary response to size-selective harvest and to massive stocking of the lake with hatchery-reared larvae. The present study is an example of how fish reproductive traits are influenced by the combined action of various human impacts: changes in system productivity, size-selective harvest and massive stocking.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

egg weight, evolutionary change, fecundity, gonadosomatic index, lake trophy

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ISO 690THOMAS, Gregor, Helmut QUOSS, Jürgen HARTMANN, Reiner ECKMANN, 2009. Human-induced changes in the reproductive traits of Lake Constance common whitefish (Coregonus lavaretus). In: Journal of evolutionary biology. 2009, 22(1), pp. 88-96. ISSN 1010-061X. eISSN 1420-9101. Available under: doi: 10.1111/j.1420-9101.2008.01622.x
BibTex
@article{Thomas2009Human-7347,
  year={2009},
  doi={10.1111/j.1420-9101.2008.01622.x},
  title={Human-induced changes in the reproductive traits of Lake Constance common whitefish (Coregonus lavaretus)},
  number={1},
  volume={22},
  issn={1010-061X},
  journal={Journal of evolutionary biology},
  pages={88--96},
  author={Thomas, Gregor and Quoß, Helmut and Hartmann, Jürgen and Eckmann, Reiner}
}
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