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Accuracy of Using Scales and Cleithra for Aging Northern Pike from an Oligotrophic Ontario Lake

1991; Wiley; Volume: 11; Issue: 2 Linguagem: Inglês

10.1577/1548-8675(1991)011 2.3.co;2

1548-8675

Arnold O. Laine, Walter T. Momot, Philip A. Ryan,

Forensic and Genetic Research

North American Journal of Fisheries ManagementVolume 11, Issue 2 p. 220-225 Article Accuracy of Using Scales and Cleithra for Aging Northern Pike from an Oligotrophic Ontario Lake Arnold O. Laine, Arnold O. Laine Department of Biology, Lakehead University, Thunder Bay, Ontario, P7B 5E1 Canada Present address: Ontario Ministry of the Environment, Thunder Bay, Ontario P7C 5G6, Canada.Search for more papers by this authorWalter T. Momot, Walter T. Momot Department of Biology, Lakehead University, Thunder Bay, Ontario, P7B 5E1 CanadaSearch for more papers by this authorPhilip A. Ryan, Philip A. Ryan Quetico-Mille Lacs Fisheries Assessment Unit, Ontario Ministry of Natural Resources, Thunder Bay, Ontario, P7C 5G6 Canada Present address: Ontario Ministry of Natural Resources, Port Dover, Ontario N0A 1N0, Canada.Search for more papers by this author Arnold O. Laine, Arnold O. Laine Department of Biology, Lakehead University, Thunder Bay, Ontario, P7B 5E1 Canada Present address: Ontario Ministry of the Environment, Thunder Bay, Ontario P7C 5G6, Canada.Search for more papers by this authorWalter T. Momot, Walter T. Momot Department of Biology, Lakehead University, Thunder Bay, Ontario, P7B 5E1 CanadaSearch for more papers by this authorPhilip A. Ryan, Philip A. Ryan Quetico-Mille Lacs Fisheries Assessment Unit, Ontario Ministry of Natural Resources, Thunder Bay, Ontario, P7C 5G6 Canada Present address: Ontario Ministry of Natural Resources, Port Dover, Ontario N0A 1N0, Canada.Search for more papers by this author First published: May 1991 https://doi.org/10.1577/1548-8675(1991)011 2.3.CO;2Citations: 29 AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract We examined the validity (accuracy and precision) of using scales and cleithra to assess the structure of the small population of northern pike Esox lucius (N = 220–270 fish age 3 or older) found in Squeers Lake, Ontario (48°31'N, 90°33'W). The high percent frequency of agreement, low index of average error, and low index of precision indicate that both scales and cleithra are equally suitable tissues for assigning age structure to Squeers Lake northern pike. An examination of the accuracy of age estimates through the use of oxytetracycline (OTC) labeling and mark–recapture of fish confirmed that marks identified on both tissues were in fact annuli. Cleithra, however, yielded more accurate results for northern pike older than age 10. Future northern pike age-assessment studies require further mark–recapture and OTC-labeling programs, particularly when precision levels exceed 5%. The collection of this additional data from any ongoing mark–recapture program would not only quickly validate the population's age structure, but would also ensure the accuracy of any future comparison based on age composition. Citing Literature Volume11, Issue2May 1991Pages 220-225 RelatedInformation