FN Archimer Export Format PT J TI Gadoids BT AF HUSSY, Karin MORALES-NIN, Beatriz PINEIRO Alvarez, Carmen DE PONTUAL, Helene SMITH, Joanne MAHE, Kelig KRUMME, Uwe SONGER, Sally WALTHER, Yvonne REY, Javier AS 1:1;2:2;3:3;4:4;5:5;6:4;7:6;8:5;9:7;10:3; FF 1:;2:;3:;4:PDG-RBE-STH-LBH;5:;6:PDG-RBE-HMMN-LRHBL;7:;8:;9:;10:; C2 UNIV TECH DENMARK, DENMARK CSIC, SPAIN IEO, SPAIN IFREMER, FRANCE CEFAS, UK THUENEN INST SEA FISHERIES, GERMANY COUNTY ADM BOARD, SWEDEN SI BREST BOULOGNE SE PDG-RBE-STH-LBH PDG-RBE-HMMN-LRHBL TC 0 UR https://archimer.ifremer.fr/doc/00620/73189/72379.pdf LA English DT Article AB This chapter was written during the Workshop on Age Validation of Gadoids (WKAVGS 2013) which was held 6–10 May 2013 at Imedea in Esporles, Mallorca. The terms of reference for the workshop were to: 1. Review information on age estimations, otolith exchanges, workshops, and validation works done so far on the following species: European hake, cod, pollock, saithe, haddock, whiting, and blue whiting; 2. Assemble and compare the results of different validation methods (i.e. marking and recapture, marking the calcified structure, marginal increment analysis, marginal analysis, modal progression analysis, length back-calculation, etc.); 3. Discuss and propose the most appropriate validation methods of age and growth pattern of calcified structures (CS), for each species and stock; 4. Propose the appropriate validation methods to recognize the growth check as well as the spawning ring, demersal ring, migration ring, etc.; 5. Propose an ICES Cooperative Research Report on: Age Validation Studies for ICES and GCFM Gadoid Stocks to ICES PGCCDBS, using previous studies and the outcome of this workshop; 6. Based on results, conclusions, and recommendations from this workshop to initiate and design an international cooperation project on validation methods (such as on the validation of checks and spawning rings) to commence after the workshop. PY 2019 SO ICES Cooperative Research Report SN 1017-6195 PU ICES IS 346 BP 15 EP 37 DI 10.17895/ices.pub.5221 ID 73189 ER EF