Stock-recruitment relations controlled by feeding interactions alone

Axel G Rossberg, Jennifer Houle, Kieran Hyder

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Stock-recruitment (S-R) relationships are the centrepiece of fisheries management aimed at achieving maximum sustainable yield (MSY). Here we consider the possibility that the density dependence evident in S-R relations is controlled by feeding interactions alone. We simulate a food-web model with dynamic representations of intra- and interspecific size structure and a linear relation between food intake and hatchling production of adults. Population sizes of individual stocks are modified by imposing additional mortality. The predominant functional forms and the steepness of resulting S-R relationships agree well with observations. We conclude that recruitment is plausibly regulated by feeding interactions alone.
Original languageEnglish
Pages (from-to)1447-1455
JournalCanadian Journal of Fisheries and Aquatic Science
Volume70
Issue number10
DOIs
Publication statusPublished - Oct 2013

Keywords

  • Recruitment, Food-Web, Maximum Sustainable Yield, Modelling, life history, steepness, Deriso-Schnute model

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics

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