Results of the Canada Spain cod otolith exchange

• Main Authors: López Veiga, E. C., Halliday, R.G., Wells, R.
• Format: Report
• Language: English
• Published: International Commission for the Northwest Atlantic Fisheries 1975
• Subjects: Canada; Gadus morhua; Northwest Atlantic
• Online Access: http://hdl.handle.net/10261/168909

Annual Meeting International Commission for the Northwest Atlantic Fisheries (ICNAF), june 1975.-- 4 pages, 2 figures, 4 tables During 1974 an otolith exchange was carried out between the Institute de Investigaciones Pesqueras (Vigo, Spain), the St. Andrews Biological Station (N.B., Canada), and the St. John's Biological Station (Nfld, Canada). The otoliths, collected from commercial samples taken on Spanish pair trawlers, were aged by Spanish readers prior to their being sent to participating laboratories. A total of 338 otoliths from Subdiv. 4Vs were sent to St. Andrews and 850 otoliths from Div. 3LNO and 3Ps were sent to St. John's. In the Spanish laboratory, otoliths are aged by three readers independently and it is necessary to have an agreement of two for an age to be accepted as valid. In both of the Canadian laboratories, the otoliths are usually aged by only one reader. In the present exchange the otoliths from 4Vs were aged by one reader at St. Andrews and those from 3LNO and 3Ps were aged by two persons at St. John's. [.] Gadus morhua Peer reviewed