A test of the provisioning hypothesis of recruitment control in Georges Bank haddock
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A test of the provisioning hypothesis of recruitment control in Georges Bank haddock

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  • Journal Title:
    Canadian Journal of Fisheries and Aquatic Sciences
  • Personal Author:
    Friedland, Kevin D.
  • NOAA Program & Office:
    NMFS (National Marine Fisheries Service)
  • Description:
    The haddock (Melanogrammus aeglefinus) stock of the Georges Bank region of the US Northeast Continental Shelf displays a pattern of large, episodic recruitments. Among the hypothesized controlling mechanisms is the idea that recruitment events are related to provisioning of prespawning haddock by the fall bloom the year before. With the occurrence of a recent large recruitment event in 2013, it would be prudent to retest this hypothesis. Fall bloom magnitude was positively correlated (r = 0.645, p = 0.005) with haddock survivor ratio (recruits per spawning biomass), including data from the 2013 recruitment. This relationship identifies a pathway of bottom-up control of a resource species, thus focusing concern over recent changes in lower trophic-level productivity.
  • Keywords:
  • Source:
    Canadian Journal of Fisheries and Aquatic Sciences, 78(6), 655-658
  • DOI:
  • ISSN:
    0706-652X;1205-7533;
  • Format:
    PDF
  • Publisher:
    Canadian Science Publishing
  • Document Type:
    Journal Article
  • Rights Information:
    Other
  • Compliance:
    Submitted
  • Main Document Checksum:
  • Download URL:
  • File Type:

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