Yellowtail Flounder, Limanda ferruginea
Image
Sarah Emery (SE) has been working with Yellowtail Flounder at NOAA since 2009, and has 5 years of prior experience. Whole otoliths are viewed with reflected light. Until 2019, scales were impressed in plastic and viewed with a projector.
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. Structure indicates which part of the fish was used: Scales, Otoliths, or comparisons between the two structures.
| Sample Source | Structure | Test Type | Date Com-pleted | Age Reader | Number Aged | Number Tested | CV (%) | Agree-ment (%) | Bias |
|---|---|---|---|---|---|---|---|---|---|
| 2023 Commercial Samples (Q2-4) | Otoliths | Precision | 2/2024 | SE | 250 | 56 | 2.11 | 82.1 | n/s |
| 2022 Observer Samples (Q1-Q4) | Otoliths | Precision | 1/2024 | SE | 319 | 60 | 1.60 | 89.8 | n/s |
| 2023 Massachusetts Autumn Survey (202392) | Otoliths | Precision | 1/2024 | SE | 152 | 42 | 1.16 | 92.9 | |
| 2023 Autumn Survey (202304) | Otoliths | Precision | 12/2023 | SE | 410 | 60 | 1.28 | 93.3 | |
| 2021 Observer Samples (Q1-Q4) | Otoliths | Precision | 12/2023 | SE | 261 | 49 | 1.14 | 89.8 | n/s |
| 2023 Massachusetts Spring Survey (202391) | Otoliths | Precision | 9/2023 | SE | 281 | 65 | 1.13 | 92.3 | |
| 2023 Commercial Samples (Q1) | Otoliths | Precision | 5/2023 | SE | 123 | 42 | 1.04 | 90.5 | |
| 2022 Autumn Survey (202204) | Otoliths | Precision | 1/2023 | SE | 284 | 58 | 1.11 | 93.1 | |
| 2022 Massachusetts Autumn Survey (202292) | Otoliths | Precision | 1/2023 | SE | 193 | 50 | 1.35 | 90.0 | |
| 2022 Massachusetts Spring Survey (202291) | Otoliths | Precision | 11/2022 | SE | 197 | 49 | 1.14 | 89.8 | n/s |
| 2022 Commercial Samples (Q2) | Otoliths | Precision | 9/2022 | SE | 128 | 42 | 1.01 | 90.5 | |
| 2022 Spring Survey (202202) | Otoliths | Precision | 6/2022 | SE | 373 | 71 | 1.44 | 91.5 | |
| 2021 Massachusetts Autumn Survey (202192) | Otoliths | Precision | 4/2022 | SE | 129 | 33 | 1.14 | 90.9 | |
| 2021 Commercial Samples (Q1-Q4) | Otoliths | Precision | 3/2022 | SE | 126 | 32 | 1.82 | 87.5 | n/s |
| 2021 Autumn Survey (202104) | Otoliths | Precision | 1/2022 | SE | 274 | 45 | 1.92 | 91.1 | |
| 2021 Massachusetts Spring Survey (202191) | Otoliths | Precision | 9/2021 | SE | 117 | 29 | 2.03 | 86.2 | n/s |
| 2021 Spring Survey (202102) | Otoliths | Precision | 7/2021 | SE | 574 | 74 | 1.99 | 89.2 | n/s |
| 2020 Commercial Samples (Q2) | Otoliths | Precision | 11/2020 | SE | 196 | 63 | 2.01 | 85.7 | n/s |
| 2019 Massachusetts Autumn Survey (201992) | Otoliths | Precision | 2/2020 | SE | 179 | 44 | 1.00 | 95.5 | |
| 2019 Autumn Survey (201904) | Otoliths | Precision | 12/2019 | SE | 433 | 82 | 1.43 | 89.0 | n/s |
| 2019 Massachusetts Spring Survey (201991) | Otoliths | Precision | 9/2019 | SE | 184 | 36 | 2.04 | 86.1 | n/s |
| 2019 Spring Survey (201902) | Scales | Precision | 6/2019 | SE | 463 | 83 | 1.94 | 88.0 | n/s |
| 2019 Spring Survey (201902) | Otoliths | Precision | 6/2019 | SE | 463 | 83 | 0.37 | 97.6 | |
| 2018 Commercial Samples (Q4) | Otoliths | Precision | 5/2019 | SE | 121 | 40 | 1.42 | 92.5 | |
| 2018 Commercial Samples (Q3) | Otoliths vs. Scales | Inter-Structure | 3/2019 | SE | 78 | 78 | 1.90 | 91.0 | |
| 2018 Commercial Samples (Q3) | Otoliths | Precision | 3/2019 | SE | 117 | 39 | 4.36 | 74.4 | n/s |
| 2018 Massachusetts Autumn Survey (201892) | Otoliths | Precision | 3/2019 | SE | 180 | 44 | 0.94 | 95.5 | |
| 2018 Autumn Survey (201804) | Otoliths | Precision | 12/2018 | SE | 487 | 85 | 1.79 | 90.6 | |
| 2018 Autumn Survey (201804) | Scales | Precision | 12/2018 | SE | 487 | 87 | 2.14 | 92.0 | |
| 2018 Commercial Samples (Q2) | Otoliths vs. Scales | Inter-Structure | 11/2018 | SE | 206 | 206 | 3.86 | 77.7 | n/s |
| 2018 Commercial Samples (Q2) | Otoliths | Precision | 11/2018 | SE | 227 | 54 | 2.24 | 88.9 | n/s |
| 2018 Commercial Samples (Q2) | Scales | Precision | 11/2018 | SE | 445 | 88 | 2.00 | 88.6 | n/s |
| 2018 Massachusetts Spring Survey (201891) | Scales | Precision | 9/2018 | SE | 345 | 68 | 2.44 | 86.8 | n/s |
| 2018 Commercial Samples (Q1) | Otoliths | Precision | 8/2018 | SE | 236 | 54 | 1.58 | 92.6 | |
| 2018 Commercial Samples (Q1) | Scales | Precision | 8/2018 | SE | 387 | 74 | 1.30 | 91.9 | |
| 2018 Spring Survey (201802) | Otoliths | Precision | 6/2018 | SE | 115 | 50 | 1.91 | 88.0 | n/s |
| 2018 Spring Survey (201802) | Scales | Precision | 6/2018 | SE | 274 | 59 | 1.04 | 93.2 | |
| 2017 Commercial Samples (Q4) | Scales | Precision | 3/2018 | SE | 337 | 67 | 0.57 | 95.5 | |
| 2017 Commercial Samples (Q3) | Scales | Precision | 2/2018 | SE | 406 | 83 | 1.94 | 88.0 | n/s |
| 2017 Massachusetts Autumn Survey (201792) | Scales | Precision | 2/2018 | SE | 274 | 48 | 1.55 | 91.7 | |
| 2017 Autumn Survey (201704) | Scales | Precision | 1/2018 | SE | 307 | 59 | 2.97 | 88.1 | n/s |
| 2017 Commercial Samples (Q2) | Scales | Precision | 12/2017 | SE | 848 | 97 | 2.85 | 83.5 | n/s |
| 2017 Commercial Samples (Q1) | Scales | Precision | 8/2017 | SE | 555 | 97 | 0.90 | 94.8 | |
| 2017 Massachusetts Spring Survey (201791) | Scales | Precision | 8/2017 | SE | 264 | 57 | 1.13 | 94.7 | |
| 2017 Spring Survey (201702) | Scales | Precision | 6/2017 | SE | 551 | 95 | 1.30 | 93.7 | |
| 2016 Massachusetts Autumn Survey (201692) | Scales | Precision | 4/2017 | SE | 147 | 35 | 0.81 | 97.1 | |
| 2016 Commercial Samples (Q4) | Scales | Precision | 4/2017 | SE | 854 | 100 | 2.40 | 89.0 | n/s |
| 2016 Commercial Samples (Q3) | Scales | Precision | 2/2017 | SE | 235 | 53 | 3.57 | 84.9 | n/s |
| 2016 Autumn Survey (201604) | Scales | Precision | 1/2017 | SE | 563 | 99 | 2.70 | 93.9 | |
| 2016 Commercial Samples (Q2) | Scales | Precision | 12/2016 | SE | 996 | 100 | 1.94 | 88.0 | n/s |
| 2016 Massachusetts Spring Survey (201691) | Scales | Precision | 10/2016 | SE | 370 | 65 | 0.44 | 98.5 | |
| 2016 Commercial Samples (Q1) | Scales | Precision | 10/2016 | SE | 1106 | 100 | 1.60 | 91.0 | |
| 2016 Spring Survey (201602) | Scales | Precision | 8/2016 | SE | 672 | 97 | 1.55 | 92.8 | |
| 2016 Canadian (DFO) Spring Survey (TEL2016002) | Scales | Precision | 5/2016 | SE | 153 | 30 | 0.52 | 96.7 | |
| 2015 Commercial Samples (Q4) | Scales | Precision | 4/2016 | SE | 905 | 98 | 2.59 | 85.7 | n/s |
| 2015 Massachusetts Autumn Survey (201592) | Scales | Precision | 3/2016 | SE | 249 | 54 | 2.79 | 92.6 | |
| 2015 Commercial Samples (Q3) | Scales | Precision | 3/2016 | SE | 640 | 96 | 1.92 | 90.6 | |
| 2015 Autumn Survey (201504) | Scales | Precision | 12/2015 | SE | 459 | 88 | 2.14 | 97.7 | |
| 2015 Commercial Samples (Q2) | Scales | Precision | 10/2015 | SE | 812 | 100 | 1.36 | 92.0 | |
| 2015 Massachusetts Spring Survey (201591) | Scales | Precision | 8/2015 | SE | 247 | 55 | 0.73 | 96.4 | |
| 2015 Commercial Samples (Q1) | Scales | Precision | 8/2015 | SE | 650 | 91 | 1.55 | 91.2 | |
| 2015 Spring Survey (201502) | Scales | Precision | 6/2015 | SE | 638 | 98 | 1.14 | 92.9 | |
| Yellowtail Reference Collection | Scales | Accuracy | 4/2015 | SE | — | 68 | 1.93 | 86.8 | n/a |
| 2014 Massachusetts Autumn Survey (201492) | Scales | Precision | 4/2015 | SE | 183 | 45 | 1.68 | 95.6 | |
| 2014 Commercial Samples (Q4) | Scales | Precision | 3/2015 | SE | 627 | 92 | 2.52 | 87.0 | n/s |
| 2014 Commercial Samples (Q3) | Scales | Precision | 2/2015 | SE | 208 | 45 | 1.33 | 93.3 | |
| 2014 Autumn Survey (201404) | Scales | Precision | 1/2015 | SE | 580 | 87 | 1.21 | 94.3 | |
| 2014 Commercial Samples (Q2) | Scales | Precision | 12/2014 | SE | 648 | 96 | 0.89 | 94.8 | |
| 2014 Commercial Samples (Q1) | Scales | Precision | 11/2014 | SE | 515 | 98 | 0.61 | 96.9 | |
| 2014 Massachusetts Spring Survey (201491) | Scales | Precision | 9/2014 | SE | 194 | 48 | 2.52 | 89.6 | n/s |
| 2014 Spring Survey (201402) | Scales | Precision | 7/2014 | SE | 713 | 96 | 0.51 | 97.9 | |
| 2013 Massachusetts Autumn Survey (201392) | Scales | Precision | 5/2014 | SE | 179 | 44 | 0.92 | 95.5 | |
| 2013 Massachusetts Spring Survey (201391) | Scales | Precision | 4/2014 | SE | 192 | 46 | 1.06 | 93.5 | |
| 2013 Commercial Samples (Q4) | Scales | Precision | 4/2014 | SE | 559 | 97 | 1.71 | 88.7 | n/s |
| 2013 Commercial Samples (Q3) | Scales | Precision | 3/2014 | SE | 597 | 96 | 1.08 | 93.8 | |
| 2013 Autumn Survey (201304) | Scales | Precision | 2/2014 | SE | 586 | 95 | 1.98 | 91.6 | |
| 2013 Commercial Samples (Q2) | Scales | Precision | 1/2014 | SE | 867 | 99 | 1.17 | 93.9 | |
| 2013 Yellowtail Cooperative Survey (201350 & 201351) | Scales | Precision | 12/2013 | SE | 993 | 100 | 3.11 | 86.0 | n/s |
| 2013 Commercial Samples (Q1) | Scales | Precision | 9/2013 | SE | 913 | 101 | 1.59 | 90.1 | |
| 2013 Canadian (DFO) Spring Survey (NED2013002) | Scales | Precision | 8/2013 | SE | 159 | 43 | 2.99 | 83.7 | n/s |
| 2013 Spring Survey (201302) | Scales | Precision | 7/2013 | SE | 973 | 100 | 2.12 | 88.0 | n/s |
| 2012 Massachusetts Autumn Survey (201292) | Scales | Precision | 2/2013 | SE | 153 | 51 | 1.26 | 94.1 | |
| 2012 Commercial Samples (Q4) | Scales | Precision | 2/2013 | SE | 1387 | 102 | 2.48 | 87.3 | n/s |
| 2012 Autumn Survey (201204) | Scales | Precision | 2/2013 | SE | 712 | 108 | 2.58 | 87.0 | n/s |
| 2012 Commercial Samples (Q3) | Scales | Precision | 12/2012 | SE | 742 | 99 | 2.15 | 88.9 | n/s |
| 2012 Commercial Samples (Q2) | Scales | Precision | 11/2012 | SE | 763 | 97 | 2.13 | 87.6 | n/s |
| 2012 Massachusetts Spring Survey (201291) | Scales | Precision | 9/2012 | SE | 162 | 51 | 1.41 | 92.2 | |
| 2012 Commercial Samples (Q1) | Scales | Precision | 8/2012 | SE | 1253 | 100 | 2.55 | 83.0 | n/s |
| 2011 Massachusetts Autumn Survey (201192) | Scales | Precision | 6/2012 | SE | 201 | 54 | 1.12 | 94.4 | |
| 2012 Spring Survey (201202) | Scales | Precision | 6/2012 | SE | 606 | 98 | 1.54 | 90.8 | |
| 2012 Canadian (DFO) Spring Survey (NED2012002) | Scales | Precision | 5/2012 | SE | 505 | 97 | 3.04 | 82.5 | n/s |
| 2011 Autumn Survey (201105) | Scales | Precision | 4/2012 | SE | 775 | 100 | 1.82 | 92.0 | |
| 2011 Commercial Samples (Q4) | Scales | Precision | 3/2012 | SE | 1047 | 99 | 0.77 | 96.0 | |
| 2011 Commercial Samples (Q3) | Scales | Precision | 2/2012 | SE | 703 | 100 | 1.38 | 93.0 | |
| 2011 Commercial Samples (Q2) | Scales | Precision | 12/2011 | SE | 1177 | 99 | 1.00 | 93.9 | |
| 2011 Massachusetts Spring Survey (201191) | Scales | Precision | 11/2011 | SE | 281 | 75 | 2.20 | 89.3 | n/s |
| 2011 Commercial Samples (Q1) | Scales | Precision | 7/2011 | SE | 1496 | 103 | 1.88 | 86.4 | n/s |
| 2011 Spring Survey (201102) | Scales | Precision | 6/2011 | SE | 428 | 95 | 2.01 | 88.4 | n/s |
| 2010 Massachusetts Autumn Survey (201092) | Scales | Precision | 4/2011 | SE | 288 | 75 | 2.05 | 92.0 | |
| 2011 Canadian (DFO) Spring Survey (NED2011002) | Scales | Precision | 4/2011 | SE | 359 | 100 | 3.32 | 82.0 | n/s |
| 2010 Commercial Samples (Q4) | Scales | Precision | 3/2011 | SE | 1042 | 96 | 1.04 | 94.8 | |
| 2010 Commercial Samples (Q3) | Scales | Precision | 2/2011 | SE | 816 | 100 | 3.79 | 78.0 | n/s |
| 2010 Commercial Samples (Q2) | Scales | Precision | 1/2011 | SE | 1212 | 104 | 2.30 | 86.5 | n/s |
| 2010 Commercial Samples (Q1) | Scales | Precision | 2/2011 | SE | 1206 | 99 | 1.54 | 89.9 | n/s |
| 2010 Autumn Survey (201004) | Scales | Precision | 1/2011 | SE | 707 | 98 | 1.64 | 92.9 | |
| 2010 Spring Survey (201001) | Scales | Precision | 6/2010 | SE | 1348 | 99 | 0.50 | 96.0 | |
| 2010 Massachusetts Spring Survey (201091) | Scales | Precision | 11/2010 | SE | 422 | 73 | 1.35 | 94.5 | |
| 2010 Canadian (DFO) Spring Survey (NED2010001) | Scales | Precision | 2010 | SE | 384 | 75 | 2.70 | 84.0 | n/s |
| 2009 Commercial Samples (Q4) | Scales | Precision | 5/2010 | SE | 675 | 99 | 3.57 | 82.8 | 0.037 |
| 2009 Commercial Samples (Q3) | Scales | Precision | 2/2010 | SE | 1027 | 104 | 2.12 | 89.4 | n/s |
| 2009 Autumn Survey (200904) | Scales | Precision | 1/2010 | SE | 1007 | 100 | 1.69 | 92.0 | |
| 2009 Commercial Samples (Q2) | Scales | Precision | 12/2009 | SE | 1246 | 123 | 1.39 | 91.9 | |
| 2009 Commercial Samples (Q1) | Scales | Precision | 1/2010 | SE | 1194 | 100 | 1.48 | 92.0 | |
| 2008 Commercial Samples (Q4) | Scales | Precision | 5/2009 | SM* | 1056 | 105 | 4.48 | 81.9 | n/s |
| 2008 Commercial Samples (Q3) | Scales | Precision | 4/2009 | SM* | 1225 | 100 | 4.55 | 80.0 | 0.016 |
| 2008 Commercial Samples (Q2) | Scales | Precision | 3/2009 | SE vs. SM* | 1087 | 99 | 3.12 | 82.8 | n/s |
| 2008 Commercial Samples (Q2) | Scales | Precision | 3/2009 | SM* | 1087 | 99 | 3.42 | 81.8 | 0.003 |
| 2008 Commercial Samples (Q1) | Scales | Precision | 12/2008 | SP | 1090 | 102 | 2.84 | 85.3 | n/s |
| 2008 Autumn Survey (200807) | Scales | Precision | 12/2008 | SP | 508 | 75 | 5.51 | 78.7 | 0.024 |
| Yellowtail Reference Collection | Scales | Accuracy | 6/2008 | SP | — | 79 | 1.62 | 91.1 | |
| 2008 Spring Survey (200803) | Scales | Precision | 5/2008 | SP | 483 | 75 | 2.05 | 89.3 | n/s |
| 2007 Commercial Samples (Q4) | Scales | Precision | 5/2008 | SP | 1370 | 100 | 1.83 | 91.0 | |
| 2007 Commercial Samples (Q3) | Scales | Precision | 5/2008 | SP | 1140 | 100 | 6.54 | 75.0 | 0.006 |
| 2007 Commercial Samples (Q2) | Scales | Precision | 4/2008 | SP | 969 | 100 | 3.29 | 82.0 | n/s |
| 2007 Commercial Samples (Q1) | Scales | Precision | 4/2008 | SP | 1143 | 93 | 3.72 | 80.6 | 0.006 |
| 2007 Autumn Survey (200709) | Scales | Precision | 12/2007 | SP | 499 | 75 | 3.93 | 80.0 | n/s |
| Yellowtail Reference Collection | Scales | Accuracy | 5/2007 | SP | — | 75 | 1.16 | 93.3 | |
| 2007 Spring Survey (200703) | Scales | Precision | 5/2007 | SP | 540 | 75 | 2.41 | 88.0 | n/s |
| 2006 Commercial Samples (Q4) | Scales | Precision | 5/2007 | SP | 1010 | 70 | 4.94 | 78.6 | 0.005 |
| 2006 Commercial Samples (Q3) | Scales | Precision | 5/2007 | SP | 1184 | 75 | 1.97 | 90.7 | |
| 2006 Commercial Samples (Q2) | Scales | Precision | 4/2007 | SP | 789 | 75 | 2.35 | 84.0 | n/s |
| 2006 Commercial Samples (Q1) | Scales | Precision | 3/2007 | SP | 1175 | 70 | 3.25 | 78.6 | n/s |
| 2006 Autumn Survey (200610) | Scales | Precision | 2/2007 | SP | 569 | 75 | 3.57 | 88.0 | n/s |
| 2006 Spring Survey (200604) | Scales | Precision | 5/2006 | SP | 347 | 50 | 1.56 | 90.0 | |
| 2005 Commercial Samples (Q1-4) | Scales | Precision | 5/2006 | SP | 2785 | 79 | 2.48 | 87.3 | n/s |
| 2005 Autumn Survey (200510) | Scales | Precision | 3/2006 | SP | 246 | 54 | 5.05 | 81.5 | n/s |
| 2004 Commercial Samples (Q1-4), 2004 Autumn Survey (200407), & 2005 Spring Survey (200503) | Scales | Precision | 6/2005 | SP | 3022 | 100 | 6.11 | 73.0 | n/s |
| 2004 Commercial Samples (Q1-4), 2004 Autumn Survey (200407), & 2005 Spring Survey (200503) | Scales | Precision | 6/2005 | VS | 3022 | 100 | 6.64 | 71.0 | n/s |
| 2005 Canadian (DFO) Spring Survey (NED2005001) | Scales | Precision | 4/2005 | VS | 427 | 100 | 1.79 | 92.0 | |
| 2004 Canadian (DFO) Commercial Samples | Scales | Precision | 1/2005 | SP vs. VS | 162 | 162 | 4.83 | 74.7 | n/s |
| 2004 Canadian (DFO) Commercial Samples | Scales | Precision | 1/2005 | VS | 167 | 167 | 2.52 | 86.2 | n/s |
| 2004 Canadian (DFO) Spring Survey (TEM2004004) | Scales | Precision | 2004 | VS | — | 97 | 3.97 | 79.4 | n/s |
| 2004 Winter Survey (200401) | Scales | Precision | 5/2004 | VS | 164 | 18 | 0.87 | 94.4 | |
| 2003 Autumn Survey (200306) | Scales | Precision | 5/2004 | VS | 290 | 82 | 4.36 | 81.7 | n/s |
*SP married to become SM early in 2009.
