Stock-recruitment relations controlled by feeding interactions alone

Axel G. Rossberg, Jennifer E. Houle, Kieran Hyder

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Stock-recruitment (S-R) relationships are the centrepiece of fisheries management aimed at achieving maximum sustainable yield. 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 inter-specific 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
Number of pages9
JournalCanadian Journal of Fisheries and Aquatic Sciences
Issue number10
Early online date19 Jul 2013
Publication statusPublished - Oct 2013

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