JOURNAL ARTICLE

Abiotic and biotic factors related to growth of nonnative Walleyes in Lake Pend Oreille, Idaho.

  • Published In: North American Journal of Fisheries Management, 2024, v. 44, n. 6. P. 1325 1 of 3

  • Database: Environment Complete 2 of 3

  • Authored By: Frawley, Susan E.; Corsi, Matthew P.; Dux, Andrew M.; Hardy, Ryan S.; Quist, Michael C. 3 of 3

Abstract

This article focuses on factors influencing growth of a nonnative Walleye (Sander vitreus) population in the Lake Pend Oreille system, northern Idaho. Using relative growth indices and mixed-effects modeling, the study found that Walleye growth was positively associated with mean summer water temperature and kokanee (Oncorhynchus nerka) abundance, while river inflow and opossum shrimp (Mysis diluviana) density showed no significant effect. Stable isotope analysis indicated that fast-growing individuals, especially younger age-classes, consumed prey at higher trophic levels and relied more on pelagic prey. These findings highlight the importance of temperature and prey availability in regulating growth and individual variability within this introduced Walleye population, providing insights relevant for fisheries management in novel ecosystems.

Additional Information

  • Source:North American Journal of Fisheries Management. 2024/12, Vol. 44, Issue 6, p1325
  • Document Type:Article
  • Subject Area:Environmental Sciences
  • Publication Date:2024
  • ISSN:0275-5947
  • DOI:10.1002/nafm.11056
  • Accession Number:183922665
  • Copyright Statement:Copyright of North American Journal of Fisheries Management is the property of Oxford University Press / USA 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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