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Predation-mediated recruitment in the Georges Bank fish community
Tsou, T.-S.; Collie, J.S. (2001). Predation-mediated recruitment in the Georges Bank fish community, in: Daan, N. et al. Recruitment dynamics of exploited marine populations: physical-biological interactions. Part 2: Proceedings of an ICES Symposium held in Baltimore, Maryland, USA 22-24 September 1997. ICES Marine Science Symposia, 214: pp. 994-1001
In: Daan, N. et al. (2001). Recruitment dynamics of exploited marine populations: physical-biological interactions. Part 2: Proceedings of an ICES Symposium held in Baltimore, Maryland, USA 22-24 September 1997. ICES Marine Science Symposia, 214. Academic Press: London. ISBN 1054. 935-1114 pp., more
In: ICES Marine Science Symposia. ICES/Reitzel: Copenhagen. ISSN 0906-060X, more

Also published as
  • Tsou, T.-S.; Collie, J.S. (2001). Predation-mediated recruitment in the Georges Bank fish community. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 58(3): 994-1001, more

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Keywords
    Predation; Recruitment; Clupea harengus Linnaeus, 1758 [WoRMS]; Gadus morhua Linnaeus, 1758 [WoRMS]; Melanogrammus aeglefinus (Linnaeus, 1758) [WoRMS]; ANW, Georges Bank [Marine Regions]

Authors  Top 
  • Tsou, T.-S., correspondent
  • Collie, J.S.

Abstract
    Understanding the mechanisms that control recruitment in marine fish populations is important for conservation and also for more efficient management through improved predictions of abundance. We examined the role of predation in regulating recruitment by applying multispecies virtual population analysis (MSVPA) to eight fish species on Georges Bank. Cod and silver hake were the most important predators and herring and silver hake were the most important prey species. Predation on cod and silver hake was compensatory, because cannibalism was the dominant source of predation for these species. Predation on herring and mackerel appeared to be slightly depensatory or density-independent. Predation on young fish also affected the relative cohort size at age 2. Therefore, predation should be considered when making medium- to long-term recruitment forecasts.

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