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Butterfish: QA/QC Exercise Results

Results of the QA/QC exercises for butterfish

Butterfish, Peprilus triacanthus

Image
Side-profile illustration of a blue, gray, and silvery white butterfish. Credit: NOAA Fisheries/Jack Hornady

Josh Dayton (JD) has been working with Butterfish since 2012. Whole otoliths are viewed with reflected light.

In tests where agreement is below 90%, bias indicates either the P-value of a symmetry test or ‘n/s’ (test not significant at the α = 0.05 level). The Evans & Hoenig test was used to test bias starting 1/2022; prior to that, a Bowker's test was used.

Sample Source Test Type Date Completed Age Reader Number Aged Number Tested CV (%) Agree-ment (%) Bias
2022 Spring Survey (202202) Precision 8/2022 JD 832 61 2.80 90.2  
2020 Commercial Samples (Q1-Q4) Precision 5/2022 JD 299 45 4.95 86.7 n/s
2021 Commercial Samples (Q1-Q4) Precision 4/2022 JD 370 70 4.66 85.7 n/s
2021 Autumn Survey (202104) Precision 4/2022 JD 873 50 15.33 74.0 n/s
2021 Spring Survey (202102) Precision 2/2022 JD 611 45 2.50 88.9 n/s
2020 Spring Survey (202002) Precision 2/2022 JD 282 40 6.63 77.5 0.020
2019 Commercial Samples (Q1-Q4) Precision 9/2020 JD 321 65 6.95 84.6 n/s
2019 Autumn Survey (201904) Precision 2/2020 JD 702 58 4.88 86.2 n/s
2019 Spring Survey (201902) Precision 9/2019 JD 495 82 3.42 87.8 n/s
2018 Commercial Samples (Q1-Q4) Precision 7/2019 JD 579 82 10.17 79.3 n/s
2018 Autumn Survey (201804) Precision 4/2019 JD 704 64 6.50 82.8 n/s
2018 Spring Survey (201802) Precision 8/2018 JD 612 63 2.86 90.5  
2017 Commercial Samples (Q1-Q4) Precision 5/2018 JD 152 36 4.66 86.1 n/s
2016 Commercial Samples (Q1-Q4) Precision 1/2018 JD 271 57 6.29 82.5 n/s
2017 Spring Survey (201702) Precision 12/2017 JD 632 65 1.98 90.8  
2016 Autumn Survey (201604) Precision 3/2017 JD 794 65 1.16 96.9  
2016 Spring Survey (201602) Precision 1/2017 JD 905 80 3.70 87.5 n/s
2015 Commercial Samples (Q1-Q4) Precision 3/2016 JD 226 48 4.55 87.5 n/s
2015 Autumn Survey (201504) Precision 2/2016 JD 814 76 2.85 93.4  
2015 Spring Survey (201502) Precision 2/2016 JD 580 72 1.43 95.8  
2014 Commercial Samples (Q1-Q4) Precision 1/2016 JD 450 80 3.39 90.0  
2014 Autumn Survey (201404) Precision 4/2015 JD 945 100 5.29 91.0  
2014 Spring Survey (201402) Precision 4/2015 JD 404 81 2.30 93.8  
2013 Autumn Survey (201304) Precision 2/2015 JD 836 86 5.07 90.7  
2013 Spring Survey (201302) Precision 11/2013 JD 571 92 1.44 93.5  
2009, 2010, 2011, 2012 Autumn Surveys (200904, 201004, 201105, 201204) Precision 5/2013 JD 3709 101 5.86 90.1  
2010, 2011, 2012 Spring Surveys (201001, 201102, 201202) Precision 4/2013 JD 1953 98 5.36 80.6 n/s
2009 Spring Survey (200902) Precision 9/2009 LDW 385 75 3.80 85.3 n/s
2003 Autumn Survey (200306) Precision 6/2009 LDW 837 75 4.08 85.3 0.040
2004 Autumn Survey (200407) Precision 5/2009 LDW 715 72 13.51 80.6 n/s
2005 Autumn Survey (200510) Precision 4/2009 LDW 760 73 14.01 72.6 0.035
2006 Autumn Survey (200610) Precision 4/2009 LDW 1052 100 3.49 93.0  
2007 Autumn Survey (200709) Precision 4/2009 LDW 750 74 8.47 83.8 n/s
2003 Spring Survey (200303) Precision 4/2009 LDW vs. NM 218 156 5.60 84.0 n/s
2005 Spring Survey (200503) Precision 4/2009 LDW 203 49 5.48 77.6 0.012
2006 Spring Survey (200604) Precision 4/2009 LDW 286 49 4.00 85.7 n/s
2008 Autumn Survey (200807) Precision 3/2009 LDW 888 73 11.94 75.3 n/s
2008 Spring Survey (200803) Precision 3/2009 LDW 355 75 2.17 93.3  
2007 Spring Survey (200703) Precision 3/2009 LDW 338 49 7.04 75.5 n/s
1984 Spring Survey (198402), 1984 Autumn Survey (198405), and 1984 Commercial Samples (all quarters) Calibration 1/2009 LDW 769 2.74 93.4  

Last updated by Northeast Fisheries Science Center on December 27, 2022

Age and Growth