Summer Flounder, Paralichthys dentatus
Image
Katie Rogers (KR) has been working with Summer Flounder since 2018; before that, the age reader was Blanche Jackson (BJ, retired). Sectioned and whole otoliths are viewed with transmitted light. A special project used samples collected by the Partnership for Mid-Atlantic Fisheries Science (PMAFS); Nicole Calabrese (NC) aged these samples.
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. All samples were collected by the Northeast Fisheries Science Center except where indicated otherwise. Structure indicates which part of the fish was used: Scales, Otoliths, or a combination of both (S+O).
| Sample Source | Struc-ture | Test Type | Date Com-pleted | Age Reader | Number Aged | Number Tested | CV (%) | Agree-ment (%) | Bias |
|---|---|---|---|---|---|---|---|---|---|
| 2024 Commercial Samples (Q4) | Otoliths | Precision | 3/2025 | KR | 849 | 87 | 1.21 | 90.8 | |
| 2024 Commercial Samples (Q3) | Otoliths | Precision | 3/2025 | KR | 1165 | 100 | 3.20 | 82.0 | n/s |
| 2024 Commercial Samples (Q2) | Otoliths | Precision | 3/2025 | KR | 598 | 85 | 1.94 | 85.9 | n/s |
| 2024 Commercial Samples (Q1) | Otoliths | Precision | 3/2025 | KR | 463 | 82 | 0.95 | 92.7 | |
| 2024 Autumn Survey (202404) | Otoliths | Precision | 2/2025 | KR | 456 | 41 | 1.55 | 87.8 | n/s |
| 2024 Spring Survey (202402) | Otoliths | Precision | 2/2025 | KR | 584 | 88 | 1.05 | 92.0 | |
| 2019 Observer Samples (Q2) | Otoliths | Precision | 10/2024 | KR | 483 | 78 | 1.41 | 89.7 | n/s |
| 2019 Observer Samples (Q1) | Otoliths | Precision | 9/2024 | KR | 297 | 50 | 1.97 | 90.0 | |
| 2023 Commercial Samples (Q4) | Otoliths | Precision | 5/2024 | KR | 352 | 65 | 0.82 | 92.3 | |
| 2023 Commercial Samples (Q3) | Otoliths | Precision | 5/2024 | KR | 337 | 61 | 2.33 | 85.2 | n/s |
| 2023 Commercial Samples (Q2) | Otoliths | Precision | 4/2024 | KR | 394 | 78 | 1.32 | 88.5 | n/s |
| 2023 Commercial Samples (Q1) | Otoliths | Precision | 4/2024 | KR | 467 | 91 | 0.89 | 90.1 | |
| 2023 Autumn Survey (202304) | Otoliths | Precision | 3/2024 | KR | 486 | 66 | 1.36 | 92.4 | |
| 2022 Commercial Samples (Q4) | Otoliths | Precision | 5/2023 | KR | 411 | 84 | 1.02 | 89.3 | n/s |
| 2022 Massachusetts Spring & Autumn Surveys (202291 & 202292) | Otoliths | Precision | 3/2023 | KR | 174 | 40 | 2.02 | 90.0 | |
| 2022 Commercial Samples (Q3) | Otoliths | Precision | 3/2023 | KR | 929 | 100 | 1.80 | 86.0 | n/s |
| 2022 Autumn Survey (202204) | Otoliths | Precision | 2/2023 | KR | 477 | 86 | 1.33 | 91.9 | |
| 2022 Commercial Samples (Q2) | Otoliths | Precision | 1/2023 | KR | 274 | 59 | 0.98 | 91.5 | |
| 2022 Commercial Samples (Q1) | Otoliths | Precision | 12/2022 | KR | 303 | 61 | 0.82 | 91.8 | |
| 2022 Spring Survey (202202) | Otoliths | Precision | 9/2022 | KR | 472 | 84 | 2.12 | 88.1 | n/s |
| 2021 Autumn Survey (202104) | Otoliths | Precision | 5/2022 | KR | 354 | 72 | 0.97 | 91.7 | |
| 2021 Commercial Samples (Q4) | Otoliths | Precision | 5/2022 | KR | 529 | 100 | 0.69 | 94.0 | |
| 2021 Commercial Samples (Q3) | Otoliths | Precision | 5/2022 | KR | 195 | 40 | 1.22 | 87.5 | n/s |
| 2021 Commercial Samples (Q2) | Otoliths | Precision | 5/2022 | KR | 392 | 76 | 0.58 | 94.7 | |
| 2021 Commercial Samples (Q1) | Otoliths | Precision | 5/2022 | KR | 756 | 100 | 0.38 | 97.0 | |
| 2021 Spring Survey (202102) | Otoliths | Precision | 5/2022 | KR | 501 | 100 | 0.73 | 94.0 | |
| 2020 Spring Survey (202002) | Otoliths | Precision | 5/2022 | KR | 392 | 71 | 0.41 | 95.8 | |
| 2020 Commercial Samples (Q4) | Otoliths | Precision | 9/2021 | KR | 564 | 100 | 0.48 | 96.0 | |
| 2020 Commercial Samples (Q3) | Otoliths | Precision | 9/2021 | KR | 414 | 76 | 3.51 | 84.2 | n/s |
| 2020 Commercial Samples (Q2) | Otoliths | Precision | 9/2021 | KR | 372 | 70 | 0.70 | 92.9 | |
| 2020 Commercial Samples (Q1) | Otoliths | Precision | 9/2021 | KR | 1013 | 97 | 0.51 | 94.8 | |
| 2019 Massachusetts Autumn Survey (201992) | Otoliths | Precision | 4/2020 | KR | 114 | 40 | 1.92 | 92.5 | |
| 2019 Commercial Samples (Q4) | Otoliths | Precision | 4/2020 | KR | 400 | 80 | 1.62 | 86.3 | n/s |
| 2019 Autumn Survey (201904) | Otoliths | Precision | 3/2020 | KR | 472 | 86 | 3.22 | 89.5 | n/s |
| 2019 Commercial Samples (Q3) | Otoliths | Precision | 3/2020 | KR | 648 | 99 | 2.31 | 82.8 | n/s |
| 2019 Commercial Samples (Q2) | Otoliths | Precision | 2/2020 | KR | 555 | 100 | 1.91 | 84.0 | n/s |
| 2019 Commercial Samples (Q1) | Otoliths | Precision | 12/2019 | KR | 1356 | 100 | 1.73 | 83.0 | n/s |
| 2019 Spring Survey (201902) | Otoliths | Precision | 9/2019 | KR | 682 | 100 | 2.86 | 87.0 | n/s |
| 2018 Commercial Samples (Q4) | Otoliths | Precision | 6/2019 | KR | 484 | 97 | 2.28 | 83.5 | n/s |
| 2018 Commercial Samples (Q3) | Otoliths | Precision | 5/2019 | KR | 556 | 98 | 1.03 | 92.9 | |
| 2018 Autumn Survey (201804) | Otoliths | Precision | 2/2019 | KR | 397 | 84 | 2.69 | 85.7 | n/s |
| 2018 Commercial Samples (Q2) | Otoliths | Precision | 2/2019 | KR | 566 | 96 | 2.01 | 86.5 | n/s |
| 2018 Commercial Samples (Q1) | Otoliths | Precision | 11/2018 | KR | 985 | 100 | 1.12 | 90.0 | |
| 2018 Spring Survey (201802) | Otoliths | Precision | 8/2018 | KR | 441 | 90 | 1.17 | 90.0 | |
| 2017 Massachusetts Autumn Survey (201792) | Otoliths | Precision | 5/2018 | KR | 139 | 44 | 1.74 | 93.2 | |
| 2017 Massachusetts Spring Survey (201791) | Otoliths | Precision | 5/2018 | KR | 163 | 40 | 2.95 | 95.0 | |
| 2017 Commercial Samples (Q4) | Otoliths | Precision | 5/2018 | KR | 332 | 67 | 2.31 | 85.1 | n/s |
| 2017 Commercial Samples (Q3) | Otoliths | Precision | 5/2018 | KR | 329 | 68 | 0.87 | 92.6 | |
| 2017 Commercial Samples (Q2) | Otoliths | Precision | 4/2018 | KR | 698 | 97 | 1.47 | 87.6 | n/s |
| 2017 Commercial Samples (Q1) | Otoliths | Precision | 4/2018 | KR | 962 | 100 | 1.94 | 82.0 | n/s |
| 2017 Spring Survey (201702) | Otoliths | Precision | 3/2018 | KR | 417 | 79 | 2.45 | 86.1 | n/s |
| 2016 Spring Survey (201602) | Otoliths | Precision | 11/2016 | ER vs. BJ | 379 | 68 | 4.61 | 76.5 | n/s |
| 2016 Spring Survey (201602) | Otoliths | Precision | 11/2016 | BJ | 379 | 73 | 0.18 | 98.6 | |
| 2016 Commercial Samples (Q1) | Otoliths | Precision | 10/2016 | ER vs. BJ | 1399 | 92 | 3.06 | 82.6 | n/s |
| 2016 Commercial Samples (Q1) | Otoliths | Precision | 10/2016 | BJ | 1399 | 100 | 0.38 | 97.0 | |
| 2015 Massachusetts Autumn Survey (201592) | Scales | Precision | 4/2016 | BJ | 248 | 47 | 0.00 | 100.0 | |
| 2015 Commercial Samples (Q4) | Otoliths | Precision | 4/2016 | BJ | 729 | 99 | 0.13 | 99.0 | |
| 2015 Commercial Samples (Q3) | Otoliths | Precision | 4/2016 | BJ | 882 | 100 | 0.42 | 97.0 | |
| 2015 Commercial Samples (Q2) | Otoliths | Precision | 3/2016 | BJ | 676 | 97 | 0.48 | 97.9 | |
| 2015 Autumn Survey (201504) | Otoliths | Precision | 2/2016 | BJ | 513 | 99 | 5.02 | 90.9 | |
| 2015 Commercial Samples (Q1) | Otoliths | Precision | 9/2015 | BJ | 1531 | 98 | 0.32 | 98.0 | |
| 2015 Spring Survey (201502) | Otoliths | Precision | 6/2015 | BJ | 639 | 98 | 0.29 | 99.0 | |
| 2014 Commercial Samples (Q4) | S+O | Precision | 3/2015 | BJ | 784 | 100 | 0.57 | 97.0 | |
| 2014 Commercial Samples (Q3) | Otoliths | Precision | 3/2015 | BJ | 393 | 63 | 0.32 | 98.4 | |
| 2014 Commercial Samples (Q2) | S+O | Precision | 3/2015 | BJ | 843 | 95 | 0.35 | 97.9 | |
| 2014 Autumn Survey (201404) | S+O | Precision | 3/2015 | BJ | 521 | 92 | 2.70 | 95.7 | |
| 2014 Massachusetts Autumn Survey (201492) | Scales | Precision | 2/2015 | BJ | 153 | 39 | 0.00 | 100.0 | |
| 2014 Commercial Samples (Q1) | S+O | Precision | 2/2015 | BJ | 1348 | 93 | 0.67 | 95.7 | |
| 2014 Spring Survey (201402) | S+O | Precision | 12/2014 | BJ | 348 | 69 | 1.87 | 91.3 | |
| 2013 Autumn Survey (201304) | S+O | Precision | 5/2014 | BJ | 455 | 85 | 1.25 | 91.8 | |
| 2013 Commercial Samples (Q3-4) | S+O | Precision | 5/2014 | BJ | 1668 | 95 | 6.64 | 66.3 | n/s |
| 2013 Commercial Samples (Q2) | S+O | Precision | 4/2014 | BJ | 921 | 95 | 5.19 | 70.5 | n/s |
| 2013 Commercial Samples (Q1) | Scales | Precision | 1/2014 | NC | 683 | 102 | 3.96 | 70.6 | 0.005 |
| 2013 Commercial Samples (Q1) | S+O | Precision | 11/2013 | BJ | 358 | 72 | 4.32 | 73.6 | n/s |
| 2013 Spring Survey (201302) | S+O | Precision | 11/2013 | BJ | 580 | 98 | 3.40 | 82.7 | n/s |
| 2012 Commercial Samples (Q4) | Scales | Precision | 6/2013 | BJ | 416 | 85 | 1.50 | 91.8 | |
| 2012 Commercial Samples (Q3) | S+O | Precision | 6/2013 | NC | 630 | 97 | 7.66 | 61.9 | n/s |
| 2012 Commercial Samples (Q2) | S+O | Precision | 6/2013 | NC | 348 | 70 | 7.76 | 62.9 | 0.009 |
| 2012 Commercial Samples (Q2) | S+O | Precision | 4/2013 | BJ | 313 | 68 | 7.93 | 57.4 | n/s |
| 2012 Commercial Samples (Q1) | S+O | Precision | 3/2013 | BJ | 838 | 100 | 3.44 | 76.0 | n/s |
| 2012 Massachusetts Autumn Survey (201292) | Scales | Precision | 2/2013 | BJ | 136 | 39 | 4.94 | 82.1 | n/s |
| 2012 Autumn Survey (201204) | S+O | Precision | 2/2013 | BJ | 454 | 98 | 9.51 | 71.4 | 0.030 |
| 2012 Massachusetts Spring Survey (201291) | Scales | Precision | 12/2012 | BJ | 134 | 43 | 4.91 | 81.4 | n/s |
| 2012 Spring Survey (201202) | S+O | Precision | 11/2012 | BJ | 503 | 100 | 4.24 | 78.0 | 0.025 |
| 2011 Autumn Survey (201105) | S+O | Precision | 6/2012 | BJ | 471 | 94 | 7.22 | 73.4 | n/s |
| 2011 Commercial Samples (Q3-4) | S+O | Precision | 6/2012 | BJ | 1534 | 99 | 4.41 | 79.8 | n/s |
| 2011 Commercial Samples (Q2) | S+O | Precision | 6/2012 | BJ | 602 | 100 | 1.28 | 92.0 | |
| 2011 Massachusetts Autumn Survey (201192) | Scales | Precision | 3/2012 | BJ | 233 | 71 | 5.04 | 78.9 | 0.010 |
| 2011 Commercial Samples (Q1) | Scales | Precision | 9/2011 | BJ | 1022 | 98 | 5.03 | 69.4 | n/s |
| 2011 Massachusetts Spring Survey (201191) | Scales | Precision | 9/2011 | BJ | 132 | 50 | 6.96 | 76.0 | 0.040 |
| 2011 Spring Survey (201102) | S+O | Precision | 6/2011 | BJ | 834 | 95 | 4.32 | 74.7 | 0.046 |
| 2010 PMAFS Commercial Samples (Q3) | Otoliths | Precision | 6/2011 | NC | 4022 | 93 | 2.35 | 87.1 | n/s |
| 2010 Massachusetts Autumn Survey (201092) | Scales | Precision | 4/2011 | BJ | 108 | 49 | 8.31 | 81.6 | n/s |
| 2010 Commercial Samples (Q4) | S+O | Precision | 4/2011 | BJ | 916 | 99 | 5.05 | 77.8 | n/s |
| 2010 PMAFS Commercial Samples (June) from NJ | Otoliths | Precision | 2/2011 | NC | 343 | 100 | 6.02 | 62.0 | n/s |
| 2010 Commercial Samples (Q3) | Scales | Precision | 2/2011 | BJ | 904 | 111 | 3.83 | 76.6 | n/s |
| 2010 Autumn Survey (201004) | S+O | Precision | 12/2010 | BJ | 577 | 114 | 5.49 | 86.8 | 0.020 |
| 2010 Massachusetts Spring Survey (201091) | Scales | Precision | 12/2010 | BJ | 136 | 53 | 1.96 | 94.3 | |
| 2010 Commercial Samples (Q2) | S+O | Precision | 11/2010 | BJ | 749 | 95 | 3.84 | 81.1 | n/s |
| 2010 PMAFS Commercial Samples (Q2) from NY, CT, and RI | Scales | Precision | 10/2010 | NC | 443 | 100 | 2.85 | 87.0 | n/s |
| 2010 Commercial Samples (Q1) | S+O | Precision | 9/2010 | BJ | 950 | 103 | 1.36 | 92.2 | |
| 2010 PMAFS Commercial Samples (Q2) from NJ | Scales | Precision | 8/2010 | NC | 545 | 100 | 4.67 | 70.0 | n/s |
| 2010 PMAFS Commercial Samples (Q1) from New Jersey | Scales | Precision | 7/2010 | NC vs. BJ | 356 | 99 | 7.60 | 53.5 | n/s |
| 2010 Spring Survey (201001) | S+O | Precision | 5/2010 | BJ | 881 | 96 | 2.72 | 87.5 | n/s |
| 2009 PMAFS Commercial Samples (Q4) | Scales | Precision | 5/2010 | NC vs. BJ | — | 51 | 9.26 | 60.8 | n/s |
| 2009 PMAFS Commercial Samples (Q1) | Scales | Precision | 5/2010 | NC vs. BJ | — | 49 | 7.77 | 65.3 | n/s |
| 2009 Commercial Samples (Q4) | Scales | Precision | 5/2010 | BJ | 1066 | 102 | 2.54 | 88.2 | n/s |
| 2009 Commercial Samples (Q3) | Scales | Precision | 4/2010 | BJ | 1505 | 119 | 3.81 | 84.0 | 0.016 |
| 2009 Commercial Samples (Q2) | Scales | Precision | 3/2010 | BJ | 869 | 141 | 2.60 | 83.7 | n/s |
| 2009 Massachusetts Autumn Survey (200992) | S+O | Precision | 2/2010 | BJ | 159 | 55 | 4.31 | 92.7 | |
| 2009 Commercial Samples (Q1) | Scales | Precision | 12/2009 | BJ | 1226 | 149 | 2.05 | 87.2 | n/s |
| 2009 Massachusetts Spring Survey (200991) | S+O | Precision | 11/2009 | BJ | 155 | 153 | 2.37 | 91.5 | |
| 2009 Autumn Survey (200904) | S+O | Precision | 5/2010 | BJ | 562 | 127 | 4.06 | 91.3 | |
| 2009 Spring Survey (200902) | S+O | Precision | 11/2009 | BJ | 719 | 157 | 1.41 | 93.0 | |
| 2008 Bigelow Spring Survey (200804) | S+O | Precision | 11/2009 | BJ | 379 | 105 | 3.52 | 83.8 | n/s |
| 2008 Commercial Samples (Q4) | Scales | Precision | 4/2009 | BJ | 1105 | 146 | 2.95 | 87.0 | n/s |
| 2008 Commercial Samples (Q3) | Scales | Precision | 3/2009 | BJ | 1075 | 149 | 1.88 | 89.3 | n/s |
| 2008 Autumn Survey (200807) | S+O | Precision | 3/2009 | BJ | 406 | 79 | 1.82 | 91.1 | |
| 2008 Commercial Samples (Q2) | Scales | Precision | 3/2009 | BJ | 1226 | 105 | 3.01 | 83.8 | 0.046 |
| 2008 Massachusetts Autumn Survey (200892) | Scales | Precision | 3/2009 | BJ | 228 | 60 | 5.27 | 93.3 | |
| 2008 Massachusetts Spring Survey (200891) | S+O | Precision | 3/2009 | BJ | 122 | 65 | 3.31 | 87.7 | n/s |
| 2008 Commercial Samples (Q1) | Scales | Precision | 2/2009 | BJ | 1269 | 190 | 1.52 | 90.0 | |
| 2008 Spring Survey (200803) | S+O | Precision | 5/2008 | BJ | 191 | 88 | 2.91 | 87.5 | n/s |
| 2007 Commercial Samples (Q4) | Scales | Precision | 4/2008 | BJ | 798 | 114 | 2.46 | 89.5 | n/s |
| 2007 Commercial Samples (Q3) | Scales | Precision | 3/2008 | BJ | 2460 | 132 | 3.53 | 86.4 | n/s |
| 2007 Commercial Samples (Q2) | Scales | Precision | 2/2008 | BJ | 1338 | 146 | 2.15 | 89.7 | n/s |
| 2007 Commercial Samples (Q1) | Scales | Precision | 2/2008 | BJ | 1671 | 168 | 2.34 | 87.5 | n/s |
| 2007 Massachusetts Autumn Survey (200792) | S+O | Precision | 1/2008 | BJ | 210 | 87 | 2.52 | 92.0 | |
| 2007 Autumn Survey (200709) | S+O | Precision | 1/2008 | BJ | 436 | 167 | 3.96 | 88.0 | n/s |
| 2007 Massachusetts Spring Survey (200791) | S+O | Precision | 1/2008 | BJ | 124 | 124 | 2.37 | 90.3 | |
| 2006 Autumn Survey (200610) | S+O | Precision | 2/2007 | BJ | 344 | 82 | 1.86 | 93.9 | |
| 2006 Massachusetts Autumn Survey (200692) | Scales | Precision | 2/2007 | BJ | 179 | 99 | 2.60 | 90.9 | |
| 2006 Commercial Samples (Q1) | Scales | Precision | 8/2006 | BJ | 1575 | 49 | 1.24 | 93.9 | |
| 2006 Winter Survey (200603) | S+O | Precision | 6/2006 | BJ | 974 | 50 | 3.43 | 84.0 | n/s |
| 2006 Spring Survey (200604) | S+O | Precision | 5/2006 | BJ | 214 | 49 | 3.57 | 79.6 | n/s |
