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Witch (Glyptocephalus cynoglossus) in Subarea 4 and divisions 3.a and 7.d (North Sea, Skagerrak and Kattegat, eastern English Channel)
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Species: Glyptocephalus cynoglossus
Stock code: wit.27.3a47d
Assessment Year:2021
Purpose:Advice
Assessment Key: 16770
Stock Key: 169309

 
 
 
 
 
 
 
 
       

 



YearRecruitment97.5%2.5%Spawning Stock Biomass (SSB)97.5%2.5%LandingsDiscardsFishing pressure97.5%2.5%  
 Age 1       Ages 4-8    
 thousands  tonnes  tonnestonnesYear-1     
19502906547324178513881839717942379 0.270.520.141  
19512981147749186123778825817282568 0.280.550.146  
19523211650654203633609809216102554 0.290.570.145  
19533461754000221913443798314852263 0.280.560.134  
19543534455666224413372798414241590 0.250.520.116  
19553367354310208783388804414272027 0.250.530.121  
19562965348833180063435804214681936 0.250.520.122  
19572561242730153523504797715401991 0.260.520.129  
19582281837561138623498777215742678 0.290.560.149  
19592105734230129543374743515312333 0.300.580.154  
19601939832081117293154705314102563 0.310.610.162  
19611757229535104542889666412532093 0.300.610.151  
1962158382654294512679633311331419 0.270.560.134  
1963144222431785542501599910431523 0.280.580.138  
196413149228227576228155759331760 0.310.630.150  
196512349218736971204751188191356 0.300.630.143  
196612632219747262184747257221137 0.290.630.137  
196714375239818617166844006331125 0.300.670.137  
1968179802869611265150241525441174 0.310.720.136  
196921948347041388113884016479891 0.280.690.116  
197025069401421565613744011471597 0.240.600.096  
197125927416561613814524094515843 0.250.600.102  
197226222426881610815924217601908 0.250.590.110  
1973262704286316100176443757111494 0.280.610.131  
1974271014429016583194345628271138 0.270.570.129  
1975295074791718170209847709221841 0.300.600.147  
1976340915427721413220649529831496 0.290.580.142  
19774182964762270172317517510371618 0.280.570.142  
19785090577608333902445542311021664 0.280.550.139  
19795810690761372002644573012211572 0.260.510.134  
19806043296782377352949609514271883 0.260.490.140  
19815893094557367263370650117461933 0.260.470.147  
19825686390757356273834685721443155 0.300.490.180  
19835589188492353004209704425153606 0.320.500.20  
19845723889390366504438711027713903 0.330.510.22  
19855828789900377904537711628933979 0.330.500.22  
19865802690152373484586713229493579 0.320.480.22  
19875423485743343044634717129953700 0.320.480.21  
19884943479238308404715723130743290 0.310.450.21  
19894569473011285984801725631763841 0.310.450.22  
19904495870584286364806714332333862 0.310.450.22  
19914623471045300874751695832443641 0.300.430.22  
19924951974993326994672677332233164 0.290.400.20  
19935227779204345054638669132152673 0.270.380.187  
19945422383471352244661670932382696 0.260.370.183  
19955438884056351914739680732992810 0.260.370.183  
19965375782273351244832691533762790 0.270.380.189  
19975149878363338424873696934083494 0.300.420.21  
19984839274156315794766686333093786 0.330.480.23  
19994481569284289874509659830824024 0.370.540.26  
20004272066044276324124613427734422 0.420.600.29  
20014362165416290883690550624734206 0.440.630.31  
20024311063060294713272481122253813 0.460.640.33  
20033881655668270652937416820693308 0.460.620.34  
20042963141807210012698364119993059 0.450.590.34  
20052543935306183292566328020082960 0.430.550.34  
20062779636762210172510307020522335 0.390.480.32  
20072493234712179082473293620832271 0.370.450.31  
20083831348702301402378277920351999 0.360.440.30  
200958489741824611522092577189318944090.370.450.31  
201051592653294074421882566186615505240.320.400.26  
201134908448922714424322851207317724480.250.320.20  
201232987424852561328913384247021534470.220.280.178  
201336634472652839335124125298920332250.230.290.185  
201432553423882500039584709332727412510.270.340.22  
201524529327761835741194990340023633990.260.320.20  
201621361303591503041655153336630252870.260.330.20  
201732642468352275041175266321933601500.290.380.22  
201836419561672361539305294291731411520.290.400.21  
201948472804142921836435237253527071830.300.430.20  
202042309788542270034155247222219801840.280.430.180  
202136419  3562         
Average36906566402421432945732201824433050.300.510.190  

 


 
 Fishing pressure Stock size
  201820192020  201920202021
Maximum sustainable yieldFMSYAbove MSY BtriggerBelow trigger
Precautionary approachFpa,FlimIncreased risk Bpa,BlimIncreased risk
Management planFMGTNot applicable BMGTNot applicable