Details

Autor(en) / Beteiligte

• Page, F. H.
• Sinclair, M.
• Naimie, C. E.
• Loder, J. W.
• Losier, R. J.
• Berrien, P. L.
• Lough, R. G.

Titel

Cod and haddock spawning on Georges Bank in relation to water residence times

Ist Teil von

• Fisheries oceanography, 1999-09, Vol.8 (3), p.212-226

Ort / Verlag

Oxford UK: Blackwell Science Ltd

Erscheinungsjahr

1999

Quelle

Wiley-Blackwell Journals

Beschreibungen/Notizen

• The seasonal and geographical patterns of spawning for Georges Bank cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) are estimated using composite distributions of stage I eggs derived from the Marine Resources Monitoring, Assessment and Prediction (MARMAP) data set (1977–1987). The inferred mean spawning locations are compared with patterns in particle residence times derived from a three‐dimensional prognostic circulation model that estimates the tidal and seasonal mean circulation. The comparisons indicate that cod and haddock spawning occurs at times and locations characterized by model residence times in excess of 35 d. The results are discussed in the context of fish population regulation theory, particularly the member/vagrant hypothesis and the concept of abundance‐dependent vagrancy.