Age, year‐class strength variability, and partial age validation of Kiyis from Lake Superior
October 1, 2017
ge estimates of Lake Superior Kiyis Coregonus kiyi from scales and otoliths were compared and 12 years (2003–2014) of length frequency data were examined to assess year‐class strength and validate age estimates. Ages estimated from otoliths were precise and were consistently older than ages estimated from scales. Maximum otolith‐derived ages were 20 years for females and 12 years for males. Age estimates showed high numbers of fish of ages 5, 6, and 11 in 2014, corresponding to the 2009, 2008, and 2003 year‐classes, respectively. Strong 2003 and 2009 year‐classes, along with the 2005 year‐class, were also evident based on distinct modes of age‐1 fish (
Citation Information
| Publication Year | 2017 |
|---|---|
| Title | Age, year‐class strength variability, and partial age validation of Kiyis from Lake Superior |
| DOI | 10.1080/02755947.2017.1350222 |
| Authors | Taylor Lepak, Derek Ogle, Mark Vinson |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | North American Journal of Fisheries Management |
| Index ID | 70191113 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Great Lakes Science Center |
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Age estimates of Lake Superior Kiyi (Coregonus kiyi) from scales and otoliths were compared from fish collected in 2014 and 12 years (2003 to 2014) of length frequency data were examined to assess year-class strength and validate age estimates. Data were obtained to (1) compare Lake Superior Kiyi ages estimated from scales and otoliths, (2) evaluate variability in year-class strength of...
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