Volume 25 - 1999

Variations in Maturation, Growth, Condition and Spawning Biomass Production in Groundfish

For 1998, the Scientific Council initiated a Special Session titled 'Variations in Maturation, Growth, Condition and Spawning Stock Biomass Production in Groundfish', as a Symposium of topical interest to NAFO. The Symposium was hosted by the NAFO Scientific Council in conjunction with the NAFO 20th Annual Meeting held at the Hotel Altis, Lisbon, Portugal. This volume of the Journal of Northwest Atlantic Fishery Science contains papers presented at the Symposium.

The Symposium was jointly convened by E. Aro, Finnish Game and Fisheries Research Institute, Helsinki, Finland; J. Burnett, Northeast Fisheries Science Center, Massachusetts, USA; and J. Morgan, Northwest Atlantic Fisheries Center, St. John's, Newfoundland, Canada, with J. Morgan taking the lead role.

The papers are currently available as pdf versions only.

Sexual Difference in Maturation of Northeast Arctic Cod
Ajiad, A., T. Jakobsen and O. Nakken

Changes in Greenland Halibut Growth, Condition and Fecundity in the Northwest Atlantic (Flemish Pass, Flemish Cap and Southern Grand Bank)
Junquera, S., E. Roman, X. Paz and G. Ramilo

Fecundity of Northeast Arctic Greenland Halibut (Reinhardtius hippoglossoides)
Gundersen, A. C., O. S. Kjesbu, K. H. Nedreaas and A. Stene

Variations in Maturity of Haddock in the Barents Sea in Relation to Year-class Strength, Age, Size, Sex and Area
Korsbrekke, K.

Variation in Maturation of Yellowtail flounder (Pleuronectes ferruginea) on the Grand Bank
Walsh, S. J. and M. J. Morgan

Estimation of Stock Reproductive Potential: History and Challenges for Canadian Atlantic Gadoid Stock Assessments
Trippel, E. A.

Spawning Biomass Variation in Atlantic Cod (Gadus morhua) in Flemish Cap in Relation to Changes in Growth and Maturation
Saborido-Rey, F. and S. Junquera

Models of Growth and Maturity for North Sea Cod
Cook, R. M., P. A. Kunzlik, J. R. G. Hislop and D. Poulding

Growth and Maturation of Haddock (Melanogrammus aeglefinus) in Icelandic Waters
Taylor, L. and G. Stefansson

Growth Rate and Sexual Maturity in Cod (Gadus morhua) and Atlantic halibut (Hippoglossus hippoglossus)
Godo, O. R. and T. Haug

Management Implications of Sexual Differences in Maturation and Spawning Mortality of Northeast Arctic Cod
T. Jakobsen and A. Ajiad

An Evaluation of Maturity Estimates Derived from Two Different Sampling Schemes: Are Observed Changes Fact or Artifact?
Wigley, S. E., J. M. Burnett and P. J. Rago

The Effect of a Change in Perception of Length Distribution of a Population on Maturity-at-age, Weight-at-age and Spawning Stock Biomass
M. J. Morgan

Patterns in Annual Weight Increment for Div. 2J+3KL Cod and Possible Prediction for Stock Projection
Shelton, P. A., G. R. Lilly and E. Colbourne

Variation in Growth and Recruitment of Atlantic Cod (Gadus morhua) off Greenland During the Second Half of the Twentieth Century
Ratz, H.-J., M. Stein and J. Lloret

Early Development of Northeast Arctic Greenland halibut (Reinhardtius hippogossoides)
Stene, A., A. C. Gundersen, O. T. Albert, K. H. Nedreaas and P. Solemdal

Factors Influencing the Rate of Sexual Maturity and the Effect on Spawning Stock for Georges Bank and Gulf of Maine Atlantic Cod Gadus morhua Stocks
L. O'Brien

Notes:

N O T E - Notes on Potential Errors in Estimating Spawning Stock Biomass: Determining the Effects of Non-participatory Adults for Some Groundfish Species
M. P. M. Burton

N O T E - Effects of First-time Spawners on Stock-recruitment Relationships for Two Groundfish Species
S. E. Wigley

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Volume 25 - 1999

Variations in Maturation, Growth, Condition and Spawning Biomass Production in Groundfish

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