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- W2956562433 abstract "Abstract We present a general size- and age-structured demographic model of the continental phase of catadromous eels’ life cycle, allowing for the incorporation of (i) fluctuations of juvenile recruitment, (ii) density-dependent settlement and sex determination, (iii) plastic body growth and sexual dimorphism, and (iv) vital rates driven by body size rather than age. The model can be used to assess (i) standing stock, (ii) fishing yield, and (iii) spawner production under different recruitment and management scenarios. We demonstrate the model by applying it to a European eel stock (Camargue lagoons, southern France) that was continuously monitored for 17 years (1993–2009). Results indicate that the upper limit to settlement in the Camargue water system is ∼419 eels ha−1 per year. A balanced sex ratio occurs for a settlement of ∼94 eels ha−1, shifting towards males at higher densities. Catchability is higher in adult silver eels than in sub-adult yellow eels, possibly due to behavioural differences. Estimated standing stock ranged between 7 and 19 kg ha−1. Fishing yield was 5–7 kg ha−1 per year, while spawner escapement ranged between 0 and 13 kg ha−1 per year (<30% of what would occur in the absence of fishing and obstacles to migration)." @default.
- W2956562433 created "2019-07-23" @default.
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- W2956562433 date "2019-07-13" @default.
- W2956562433 modified "2023-10-13" @default.
- W2956562433 title "A demographic model for the conservation and management of the European eel: an application to a Mediterranean coastal lagoon" @default.
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- W2956562433 doi "https://doi.org/10.1093/icesjms/fsz118" @default.
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