Observations of Length at Maturity in Yellowtail Flounder on the Grand Bank (1995-97)
Date
1998-06Type
working paperAbstract
Length and age at maturity are essential information to determine the spawning stock biomass
and stock-recruit relationship. The usual knife-edge estimates of the mature proportions in fish
populations obscure the knowledge on the true levels of the spawning potential of the stocks and the
temporal variability is ignored.
The yellowtail flounder stock is mainly concentrated on the southern Grand Bank, where the
juvenile and the adult components overlap in their distribution. There was a fishing moratoria for this
stock from 1994 to 1997, and for 1998 the Scientific Council recommended reopening a limited fishery,
stating also that this fishery should be carefully monitored and sampled.
Morgan and Walsh (1977) presented estimates of length and age at maturity for yellowtail
flounder in Divisions 3 LNO from 1975 to 1995, based on the Canadian spring survey. In this paper
additional information on this subject is presented, based on the results of the of the Spanish spring
survey ...
The following license files are associated with this item: