Equilibria in a two-species fishery.

Clicks: 317
ID: 45187
2019
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Abstract
In this paper, we consider a two-species fishery model where the species can have different biological interactions, namely, competitive, symbiotic or prey-predator relationships. Each species is harvested by a group of fisherpersons. We characterize and compare equilibrium harvesting strategies, steady-state stocks and total discounted utilities under different modes of play, that is, noncooperation in both groups, cooperation in each of the groups and cooperation in only one group of fisherpersons. Our main results are as follows: (i) In all scenarios, the equilibrium strategy of an agent fishing either species consists of harvesting, in each period, a proportion of the available stock. (ii) The dividend of cooperation in a given group is increasing with the number of members in that group. (iii) Coordination between agents fishing a given species may be detrimental (biologically and economically) to the other species.
Reference Key
breton2019equilibriamathematical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Breton, Michèle;Dahmouni, Ilyass;Zaccour, Georges;
Journal Mathematical biosciences
Year 2019
DOI
S0025-5564(18)30521-2
URL
Keywords
fisheries biological interactions noncooperative and cooperative strategies two species

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