Skip to main content
Unsupported Browser Detected

Internet Explorer lacks support for the features of this website. For the best experience, please use a modern browser such as Chrome, Firefox, or Edge.

White Hake: QA/QC Exercise Results

Results of the QA/QC exercises for ageing white hake.

White Hake, Urophycis tenuis

Image
Illustration of White Hake. Credit: Jack Hornady.

Jillian Price (JP) has been working with White Hake since 2015; before that, the age reader was Bill Duffy (WD). Sectioned 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. Stock indicates whether samples were from the Eastern (EGOM) or Western (WGOM) areas of the Gulf of Maine; if no stock area is specified, samples were from both areas combined.

Sample Source Stock Test Type Date Completed Age Reader Number Aged Number Tested CV (%) Agree-ment (%) Bias
2005 Summer Shrimp Survey (200570)   Precision 12/2022 JP 184 40 3.73 82.5 n/s
2003 Summer Shrimp Survey (200370)   Precision 12/2022 JP 167 42 2.55 88.1 n/s
2002 Summer Shrimp Survey (200270)   Precision 12/2022 JP 108 40 4.61 82.5 n/s
2010 Summer Shrimp Survey (201070)   Precision 11/2022 JP 191 40 2.91 87.5 n/s
2022 Spring Survey (202202)   Precision 10/2022 JP 502 95 1.42 91.6  
2008 Summer Shrimp Survey (200870)   Precision 9/2022 JP 121 42 2.64 85.7 n/s
2001 Summer Shrimp Survey (200170)   Precision 9/2022 JP 129 40 1.69 90.0  
2021 Autumn Survey (202104)   Precision 3/2022 JP 558 100 1.00 95.0  
2021 Spring Survey (202102)   Precision 12/2021 JP 692 100 1.05 95.0  
2021 Summer Shrimp Survey (202170)   Precision 11/2021 JP 228 40 3.31 87.5 n/s
2012 Summer Shrimp Survey (201270)   Precision 11/2021 JP 247 50 2.48 90.0  
2011 Summer Shrimp Survey (201170)   Precision 9/2021 JP 242 48 1.02 93.8  
2014 Summer Shrimp Survey (201470)   Precision 9/2021 JP 155 40 3.02 87.5 n/s
2013 Summer Shrimp Survey (201370)   Precision 9/2021 JP 185 41 2.56 90.2  
1999 Summer Shrimp Survey (199970)   Precision 7/2021 JP 235 40 2.31 90.0  
2019 Autumn Survey (201904) WGOM Precision 2/2021 JP 397 73 1.51 95.9  
2019 Autumn Survey (201904) EGOM Precision 2/2021 JP 189 32 1.47 96.9  
2019 Spring Survey (201902) WGOM Precision 11/2020 JP 312 41 1.15 97.6  
2019 Spring Survey (201902) EGOM Precision 11/2020 JP 445 59 0.43 96.6  
2019 Summer Shrimp Survey (201970)   Precision 2/2020 JP 173 40 3.96 87.5 n/s
2017 Summer Shrimp Survey (201770)   Precision 10/2019 JP 128 35 0.00 100.0  
2016 Summer Shrimp Survey (201670)   Precision 10/2019 JP 190 40 0.71 97.5  
2018 Autumn Survey (201804)   Precision 7/2019 JP 289 62 3.50 95.2  
2018 Spring Survey (201802) WGOM Precision 12/2018 JP 158 42 4.94 85.7 0.050
2018 Spring Survey (201802) EGOM Precision 12/2018 JP 171 45 0.69 95.6  
2017 Autumn Survey (201704) WGOM Precision 7/2018 JP 244 55 6.37 92.7  
2017 Autumn Survey (201704) EGOM Precision 7/2018 JP 165 42 0.00 100.0  
2017 Spring Survey (201702) WGOM Precision 2/2018 JP 124 36 0.56 97.2  
2017 Spring Survey (201702) EGOM Precision 1/2018 JP 366 73 0.28 98.6  
2016 Autumn Survey (201604) WGOM Precision 7/2017 JP 409 79 2.98 93.7  
2016 Autumn Survey (201604) EGOM Precision 7/2017 JP 306 60 1.36 93.3  
2014 Spring Survey (201402)   Precision 6/2017 JP 263 49 3.73 83.7 n/s
2016 Spring Survey (201602) WGOM Precision 5/2017 JP 332 66 2.07 90.9  
2016 Spring Survey (201602) EGOM Precision 4/2017 JP 216 49 0.32 98.0  
2015 Autumn Survey (201504) WGOM Precision 3/2017 JP 417 66 2.86 93.9  
2015 Autumn Survey (201504) EGOM Precision 2/2017 JP 256 59 1.61 91.5  
2015 Spring Survey (201502)   Precision 12/2016 JP 597 78 8.19 65.4 <0.005
2014 Autumn Survey (201404)   Precision 8/2015 JP 468 89 9.37 70.8 0.023
2012 Autumn Survey (201204)   Precision 8/2014 WD 817 98 2.88 86.7 n/s
2013 Autumn Survey (201304)   Precision 7/2014 WD 328 71 17.50 69.0 n/s
2013 Spring Survey (201302)   Precision 6/2014 WD 348 71 8.64 62.0 n/s
2012 Spring Survey (201202)   Precision 2/2013 WD 616 100 6.09 76.0 n/s
2010 Spring Survey (201001)   Precision 2/2013 WD 755 99 7.78 68.7 0.023
2009 Spring Survey (200902)   Precision 2/2013 WD 775 96 5.77 75.0 n/s
2011 Autumn Survey (201105)   Precision 2/2013 WD 737 100 9.94 73.0 n/s
2009 Autumn Survey (200904)   Precision 2/2013 WD 822 99 10.64 72.7 n/s
2008 Autumn Survey (200807)   Precision 2/2013 WD 469 97 10.39 78.4 0.046
2007 Autumn Survey (200709)   Precision 1/2013 WD 488 95 4.47 82.1 n/s
2010 Autumn Survey (201004)   Precision 8/2012 WD 952 100 8.82 78.0 n/s
2011 Spring Survey (201102)   Precision 3/2012 WD 697 101 7.46 75.2 n/s

Last updated by Northeast Fisheries Science Center on December 23, 2022

Age and Growth