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Relationships between individual movement, trophic position and growth of juvenile pike (Esox lucius) [Ecology of Freshwater Fish]

Author of EDB : Julien Cucherousset

par Frédéric Magné - publié le , mis à jour le

Variation in movement between individuals can have important ecological effects on populations and ecosystems, yet the factors driving differences in movement and their consequences remain poorly understood. Here, individual variability in the movements of juvenile (age 0 + and 1 + year) pike Esox lucius was assessed using passive integrated transponder (PIT) telemetry in off-channel nursery areas over a 26- month period. Differences in the movement patterns of individuals were tested against their body sizes, ages, growth rates and trophic positions using data collected through a combination of catch-and-release sampling and stable isotope analyses.(...)

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