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J Fish Biol. 2009 Jun;74(9):1891-914. doi: 10.1111/j.1095-8649.2009.02298.x.

Estimates of the mortality and the duration of the trans-Atlantic migration of European eel Anguilla anguilla leptocephali using a particle tracking model.

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1
Agrocampus Ouest, UMR 985 INRA-Agrocampus Ouest Ecologie et Santé des Ecosystèmes, Laboratoire d'Ecologie Halieutique, Rennes Cedex, France. sylvain.bonhommeau@ifremer.fr

Abstract

Using Lagrangian simulations, based on circulation models over three different hydroclimatic periods in the last 45 years in the North Atlantic Ocean, the trans-Atlantic migration of the European eel Anguilla anguilla leptocephali was simulated via the passive drift of particles released in the spawning area. Three different behaviours were modelled: drifting at fixed depth, undergoing a vertical migration or choosing the fastest currents. Simulations included mortality hypotheses to estimate a realistic mean migration duration and relative survival of A. anguilla larvae. The mean migration duration was estimated as 21 months and the mortality rate as 3.8 per year, i.e. < 0.2% of A. anguilla larvae may typically survive the trans-Atlantic migration.

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