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Summer Flounder: QA/QC Exercise Results

Results of the QA/QC exercises for ageing summer flounder.

Summer Flounder, Paralichthys dentatus

Image
Left-eyed summer flounder flatfish illustration with dark brown body, dark spots, and lighter, tan-colored fins. Credit: NOAA Fisheries/Jack Hornady

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 SourceStruc-tureTest TypeDate Com-pletedAge ReaderNumber AgedNumber TestedCV (%)Agree-ment (%)Bias
2023 Commercial Samples (Q4)OtolithsPrecision5/2024KR352650.8292.3 
2023 Commercial Samples (Q3)OtolithsPrecision5/2024KR337612.3385.2n/s
2023 Commercial Samples (Q2)OtolithsPrecision4/2024KR394781.3288.5n/s
2023 Commercial Samples (Q1)OtolithsPrecision4/2024KR467910.8990.1 
2023 Autumn Survey (202304)OtolithsPrecision3/2024KR486661.3692.4 
2022 Commercial Samples (Q4)OtolithsPrecision5/2023KR411841.0289.3n/s
2022 Massachusetts Spring & Autumn Surveys (202291 & 202292)OtolithsPrecision3/2023KR174402.0290.0 
2022 Commercial Samples (Q3)OtolithsPrecision3/2023KR9291001.8086.0n/s
2022 Autumn Survey (202204)OtolithsPrecision2/2023KR477861.3391.9 
2022 Commercial Samples (Q2)OtolithsPrecision1/2023KR274590.9891.5 
2022 Commercial Samples (Q1)OtolithsPrecision12/2022KR303610.8291.8 
2022 Spring Survey (202202)OtolithsPrecision9/2022KR472842.1288.1n/s
2021 Autumn Survey (202104)OtolithsPrecision5/2022KR354720.9791.7 
2021 Commercial Samples (Q4)OtolithsPrecision5/2022KR5291000.6994.0 
2021 Commercial Samples (Q3)OtolithsPrecision5/2022KR195401.2287.5n/s
2021 Commercial Samples (Q2)OtolithsPrecision5/2022KR392760.5894.7 
2021 Commercial Samples (Q1)OtolithsPrecision5/2022KR7561000.3897.0 
2021 Spring Survey (202102)OtolithsPrecision5/2022KR5011000.7394.0 
2020 Spring Survey (202002)OtolithsPrecision5/2022KR392710.4195.8 
2020 Commercial Samples (Q4)OtolithsPrecision9/2021KR5641000.4896.0 
2020 Commercial Samples (Q3)OtolithsPrecision9/2021KR414763.5184.2n/s
2020 Commercial Samples (Q2)OtolithsPrecision9/2021KR372700.7092.9 
2020 Commercial Samples (Q1)OtolithsPrecision9/2021KR1013970.5194.8 
2019 Massachusetts Autumn Survey (201992)OtolithsPrecision4/2020KR114401.9292.5 
2019 Commercial Samples (Q4)OtolithsPrecision4/2020KR400801.6286.3n/s
2019 Autumn Survey (201904)OtolithsPrecision3/2020KR472863.2289.5n/s
2019 Commercial Samples (Q3)OtolithsPrecision3/2020KR648992.3182.8n/s
2019 Commercial Samples (Q2)OtolithsPrecision2/2020KR5551001.9184.0n/s
2019 Commercial Samples (Q1)OtolithsPrecision12/2019KR13561001.7383.0n/s
2019 Spring Survey (201902)OtolithsPrecision9/2019KR6821002.8687.0n/s
2018 Commercial Samples (Q4)OtolithsPrecision6/2019KR484972.2883.5n/s
2018 Commercial Samples (Q3)OtolithsPrecision5/2019KR556981.0392.9 
2018 Autumn Survey (201804)OtolithsPrecision2/2019KR397842.6985.7n/s
2018 Commercial Samples (Q2)OtolithsPrecision2/2019KR566962.0186.5n/s
2018 Commercial Samples (Q1)OtolithsPrecision11/2018KR9851001.1290.0 
2018 Spring Survey (201802)OtolithsPrecision8/2018KR441901.1790.0 
2017 Massachusetts Autumn Survey (201792)OtolithsPrecision5/2018KR139441.7493.2 
2017 Massachusetts Spring Survey (201791)OtolithsPrecision5/2018KR163402.9595.0 
2017 Commercial Samples (Q4)OtolithsPrecision5/2018KR332672.3185.1n/s
2017 Commercial Samples (Q3)OtolithsPrecision5/2018KR329680.8792.6 
2017 Commercial Samples (Q2)OtolithsPrecision4/2018KR698971.4787.6n/s
2017 Commercial Samples (Q1)OtolithsPrecision4/2018KR9621001.9482.0n/s
2017 Spring Survey (201702)OtolithsPrecision3/2018KR417792.4586.1n/s
2016 Spring Survey (201602)OtolithsPrecision11/2016ER vs. BJ379684.6176.5n/s
2016 Spring Survey (201602)OtolithsPrecision11/2016BJ379730.1898.6 
2016 Commercial Samples (Q1)OtolithsPrecision10/2016ER vs. BJ1399923.0682.6n/s
2016 Commercial Samples (Q1)OtolithsPrecision10/2016BJ13991000.3897.0 
2015 Massachusetts Autumn Survey (201592)ScalesPrecision4/2016BJ248470.00100.0 
2015 Commercial Samples (Q4)OtolithsPrecision4/2016BJ729990.1399.0 
2015 Commercial Samples (Q3)OtolithsPrecision4/2016BJ8821000.4297.0 
2015 Commercial Samples (Q2)OtolithsPrecision3/2016BJ676970.4897.9 
2015 Autumn Survey (201504)OtolithsPrecision2/2016BJ513995.0290.9 
2015 Commercial Samples (Q1)OtolithsPrecision9/2015BJ1531980.3298.0 
2015 Spring Survey (201502)OtolithsPrecision6/2015BJ639980.2999.0 
2014 Commercial Samples (Q4)S+OPrecision3/2015BJ7841000.5797.0 
2014 Commercial Samples (Q3)OtolithsPrecision3/2015BJ393630.3298.4 
2014 Commercial Samples (Q2)S+OPrecision3/2015BJ843950.3597.9 
2014 Autumn Survey (201404)S+OPrecision3/2015BJ521922.7095.7 
2014 Massachusetts Autumn Survey (201492)ScalesPrecision2/2015BJ153390.00100.0 
2014 Commercial Samples (Q1)S+OPrecision2/2015BJ1348930.6795.7 
2014 Spring Survey (201402)S+OPrecision12/2014BJ348691.8791.3 
2013 Autumn Survey (201304)S+OPrecision5/2014BJ455851.2591.8 
2013 Commercial Samples (Q3-4)S+OPrecision5/2014BJ1668956.6466.3n/s
2013 Commercial Samples (Q2)S+OPrecision4/2014BJ921955.1970.5n/s
2013 Commercial Samples (Q1)ScalesPrecision1/2014NC6831023.9670.60.005
2013 Commercial Samples (Q1)S+OPrecision11/2013BJ358724.3273.6n/s
2013 Spring Survey (201302)S+OPrecision11/2013BJ580983.4082.7n/s
2012 Commercial Samples (Q4)ScalesPrecision6/2013BJ416851.5091.8 
2012 Commercial Samples (Q3)S+OPrecision6/2013NC630977.6661.9n/s
2012 Commercial Samples (Q2)S+OPrecision6/2013NC348707.7662.90.009
2012 Commercial Samples (Q2)S+OPrecision4/2013BJ313687.9357.4n/s
2012 Commercial Samples (Q1)S+OPrecision3/2013BJ8381003.4476.0n/s
2012 Massachusetts Autumn Survey (201292)ScalesPrecision2/2013BJ136394.9482.1n/s
2012 Autumn Survey (201204)S+OPrecision2/2013BJ454989.5171.40.030
2012 Massachusetts Spring Survey (201291)ScalesPrecision12/2012BJ134434.9181.4n/s
2012 Spring Survey (201202)S+OPrecision11/2012BJ5031004.2478.00.025
2011 Autumn Survey (201105)S+OPrecision6/2012BJ471947.2273.4n/s
2011 Commercial Samples (Q3-4)S+OPrecision6/2012BJ1534994.4179.8n/s
2011 Commercial Samples (Q2)S+OPrecision6/2012BJ6021001.2892.0 
2011 Massachusetts Autumn Survey (201192)ScalesPrecision3/2012BJ233715.0478.90.010
2011 Commercial Samples (Q1)ScalesPrecision9/2011BJ1022985.0369.4n/s
2011 Massachusetts Spring Survey (201191)ScalesPrecision9/2011BJ132506.9676.00.040
2011 Spring Survey (201102)S+OPrecision6/2011BJ834954.3274.70.046
2010 PMAFS Commercial Samples (Q3)OtolithsPrecision6/2011NC4022932.3587.1n/s
2010 Massachusetts Autumn Survey (201092)ScalesPrecision4/2011BJ108498.3181.6n/s
2010 Commercial Samples (Q4)S+OPrecision4/2011BJ916995.0577.8n/s
2010 PMAFS Commercial Samples (June) from NJOtolithsPrecision2/2011NC3431006.0262.0n/s
2010 Commercial Samples (Q3)ScalesPrecision2/2011BJ9041113.8376.6n/s
2010 Autumn Survey (201004)S+OPrecision12/2010BJ5771145.4986.80.020
2010 Massachusetts Spring Survey (201091)ScalesPrecision12/2010BJ136531.9694.3 
2010 Commercial Samples (Q2)S+OPrecision11/2010BJ749953.8481.1n/s
2010 PMAFS Commercial Samples (Q2) from NY, CT, and RIScalesPrecision10/2010NC4431002.8587.0n/s
2010 Commercial Samples (Q1)S+OPrecision9/2010BJ9501031.3692.2 
2010 PMAFS Commercial Samples (Q2) from NJScalesPrecision8/2010NC5451004.6770.0n/s
2010 PMAFS Commercial Samples (Q1) from New JerseyScalesPrecision7/2010NC vs. BJ356997.6053.5n/s
2010 Spring Survey (201001)S+OPrecision5/2010BJ881962.7287.5n/s
2009 PMAFS Commercial Samples (Q4)ScalesPrecision5/2010NC vs. BJ519.2660.8n/s
2009 PMAFS Commercial Samples (Q1)ScalesPrecision5/2010NC vs. BJ497.7765.3n/s
2009 Commercial Samples (Q4)ScalesPrecision5/2010BJ10661022.5488.2n/s
2009 Commercial Samples (Q3)ScalesPrecision4/2010BJ15051193.8184.00.016
2009 Commercial Samples (Q2)ScalesPrecision3/2010BJ8691412.6083.7n/s
2009 Massachusetts Autumn Survey (200992)S+OPrecision2/2010BJ159554.3192.7 
2009 Commercial Samples (Q1)ScalesPrecision12/2009BJ12261492.0587.2n/s
2009 Massachusetts Spring Survey (200991)S+OPrecision11/2009BJ1551532.3791.5 
2009 Autumn Survey (200904)S+OPrecision5/2010BJ5621274.0691.3 
2009 Spring Survey (200902)S+OPrecision11/2009BJ7191571.4193.0 
2008 Bigelow Spring Survey (200804)S+OPrecision11/2009BJ3791053.5283.8n/s
2008 Commercial Samples (Q4)ScalesPrecision4/2009BJ11051462.9587.0n/s
2008 Commercial Samples (Q3)ScalesPrecision3/2009BJ10751491.8889.3n/s
2008 Autumn Survey (200807)S+OPrecision3/2009BJ406791.8291.1 
2008 Commercial Samples (Q2)ScalesPrecision3/2009BJ12261053.0183.80.046
2008 Massachusetts Autumn Survey (200892)ScalesPrecision3/2009BJ228605.2793.3 
2008 Massachusetts Spring Survey (200891)S+OPrecision3/2009BJ122653.3187.7n/s
2008 Commercial Samples (Q1)ScalesPrecision2/2009BJ12691901.5290.0 
2008 Spring Survey (200803)S+OPrecision5/2008BJ191882.9187.5n/s
2007 Commercial Samples (Q4)ScalesPrecision4/2008BJ7981142.4689.5n/s
2007 Commercial Samples (Q3)ScalesPrecision3/2008BJ24601323.5386.4n/s
2007 Commercial Samples (Q2)ScalesPrecision2/2008BJ13381462.1589.7n/s
2007 Commercial Samples (Q1)ScalesPrecision2/2008BJ16711682.3487.5n/s
2007 Massachusetts Autumn Survey (200792)S+OPrecision1/2008BJ210872.5292.0 
2007 Autumn Survey (200709)S+OPrecision1/2008BJ4361673.9688.0n/s
2007 Massachusetts Spring Survey (200791)S+OPrecision1/2008BJ1241242.3790.3 
2006 Autumn Survey (200610)S+OPrecision2/2007BJ344821.8693.9 
2006 Massachusetts Autumn Survey (200692)ScalesPrecision2/2007BJ179992.6090.9 
2006 Commercial Samples (Q1)ScalesPrecision8/2006BJ1575491.2493.9 
2006 Winter Survey (200603)S+OPrecision6/2006BJ974503.4384.0n/s
2006 Spring Survey (200604)S+OPrecision5/2006BJ214493.5779.6n/s

Last updated by Northeast Fisheries Science Center on June 07, 2024

Age and Growth