Document of dataset 6336

Dataset record

Type
Dataset
title in English
Migration behaviour of silver eels (Anguilla anguilla) in a large estuary of Western Europe inferred from acoustic telemetry
Acronym
2011_Loire
Description in English
Despite intensive research on eels, the behaviour of silver eels in estuaries during their migration remains poorly documented which creates serious gaps in planning the restoration of the European eel population. Estuaries are complex environments that can be exposed to large human pressures which could impede, delay migration or impact fish reproductive potential. This study investigated the estuarine migration of female silver eels in the Loire River using an acoustic telemetry system. An array of 31 hydrophones was deployed in the Loire estuary and 51 female seaward migrants were tagged with acoustic transmitters and released 20 km upstream of the estuary, at 100 km from the river mouth. 94% of the silver eels could be followed down to the river mouth. Mean global estuarine speed was 4.5 km days 1, i.e., 0.05 m s 1 and residence times varied significantly between upstream and lower compartments. Mean directional migration speed was found to be 48.6 km days 1, i.e., 0.56 m s 1, and appeared correlated with total length and body weight. Also, daily escapement rate was highly influenced by river flow.
Abstract in English
This study investigated the estuarine migration of female silver eels in the Loire River using an acoustic telemetry system.
License
https://spdx.org/licenses/CC-BY-4.0.html
bibliographicCitation
Bultel, E; Lasne, E; Acou, A; Guillaudeau, J; Bertier, C; Feunteun, E. (2014) Migration behaviour of silver eels (Anguilla anguilla) in a large estuary of Western Europe inferred from acoustic telemetry

Temporal coverage

Temporal
Start date
2011-11-11
End date
2012-2-25
Accrual periodicity
Continuous

Geographical coverage

Spatial

Thesaurus terms

Keyword
Acoustic telemetry
Acoustic Telemetry
Tracking

Themes

theme
Biology > Fish
Fisheries

Taxonomic terms

Taxon keywords
Pisces

Ownerships

contactPoint
Thomas Trancart
contactPoint
National Natural History Museum Paris
creator
Eric Feunteun
creator
National Natural History Museum Paris
creator
Thomas Trancart
creator
National Natural History Museum Paris
creator
Anthony Acou
creator
National Natural History Museum Paris
creator
Elise Bultel
creator
National Natural History Museum Paris

Dataset references

is part of
European Tracking Network (ETN) data

Special collections

part of special collection
European Tracking Network

Document metadata

date created
2019-10-07
date modified
2023-05-22