Point sampling the abundance of European eel ( Anguilla anguilla ) in freshwater areas

International audience The European eel population is in decline. Urgent management actions are required. To monitor their effect, we developed a fast sampling method, applicable in shallow rivers and tributaries. We compared the Carle & Strub estimator from 35 double pass electric fishing sampl...

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Bibliographic Details
Published in:Archiv für Hydrobiologie
Main Authors: Laffaille, Pascal, Briand, Cédric, Fatin, Denis, Lafage, Denis, Lasne, Emilien
Other Authors: Fish Pass, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES), Institution d'aménagement de la Vilaine (IAV)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2005
Subjects:
anguilla
electrofishing
methodology
monitoring
stock
[SDV]Life Sciences [q-bio]
Anguilla anguilla
Online Access:https://hal.inrae.fr/hal-02683260
https://hal.inrae.fr/hal-02683260/document
https://hal.inrae.fr/hal-02683260/file/Laffaille%20et%20al.%202005%20AH_FAL_1.pdf
https://doi.org/10.1127/0003-9136/2005/0162-0091
Description
Summary:International audience The European eel population is in decline. Urgent management actions are required. To monitor their effect, we developed a fast sampling method, applicable in shallow rivers and tributaries. We compared the Carle & Strub estimator from 35 double pass electric fishing samples with Point Abundance Sampling by Electrofishing or PASE (24 point samples on average by section) which we adapted for the eel. The correlation between both methods was highly significant (r2 = 94%, p < 0.001) for densities lower than 150 eels · 100 m−2. PASE, being a cheaper sampling method, thus constitutes an efficient and cost-effective method for evaluating management actions and further biological studies.

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