caa a22 4500 445892021 CHVBK 20180317145619.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10750-011-0725-1 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0725-1 Density-dependent and inter-specific interactions affecting European eel settlement in freshwater habitats [Elektronische Daten] [Daniele Bevacqua, M. Andrello, P. Melià, S. Vincenzi, G. De Leo, A. Crivelli] Identifying the factors influencing the settlement of European eel (Anguilla anguilla) juveniles in continental habitats is crucial to designing effective management and conservation measures for this endangered species. A long-term data series (1993-2008) of European eel and European catfish (Silurus glanis) abundance in a freshwater canal of the Camargue water system (southern France), along with parallel data on water salinity and glass eel abundance in the adjacent Vaccarès lagoon, was analysed to identify the possible causes of decline in eel abundance observed in the canal during the last two decades. A model including glass eel recruitment and catfish abundance as covariates explained 78% of the observed variation in eel settlement success. Results suggest that (1) salinity does not play a significant role in determining the fraction of eels moving from the brackish lagoon to the canal; (2) density dependence affects settlement success, possibly through a reduction of juvenile survival in the adjacent lagoon; and (3) catfish abundance is negatively correlated with eel settlement. We discuss this latter point in terms of possible predation of catfish upon eels and/or inter-specific competition between the two species. Springer Science+Business Media B.V., 2011 Anguilla anguilla nationallicence Interspecific competition nationallicence Invasive species nationallicence Population dynamics nationallicence Silurus glanis nationallicence Bevacqua Daniele Dipartimento di Scienze Ambientali, Università degli Studi di Parma, Viale Usberti 33A, 43100, Parma, Italy aut Andrello M. Laboratoire d'Ecologie Alpine, Université Joseph Fourier, Grenoble, France aut Melià P. Dipartimento di Elettronica e Informazione, Politecnico di Milano, Milan, Italy aut Vincenzi S. Dipartimento di Scienze Ambientali, Università degli Studi di Parma, Viale Usberti 33A, 43100, Parma, Italy aut De Leo G. Dipartimento di Scienze Ambientali, Università degli Studi di Parma, Viale Usberti 33A, 43100, Parma, Italy aut Crivelli A. Station Biologique de la Tour du Valat, Le Sambuc, Arles, France aut Hydrobiologia Springer Netherlands 671/1(2011-08-01), 259-265 0018-8158 671:1<259 2011 671 10750 https://doi.org/10.1007/s10750-011-0725-1 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0725-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bevacqua Daniele Dipartimento di Scienze Ambientali, Università degli Studi di Parma, Viale Usberti 33A, 43100, Parma, Italy aut NATIONALLICENCE 700 1- Andrello M. Laboratoire d'Ecologie Alpine, Université Joseph Fourier, Grenoble, France aut NATIONALLICENCE 700 1- Melià P. Dipartimento di Elettronica e Informazione, Politecnico di Milano, Milan, Italy aut NATIONALLICENCE 700 1- Vincenzi S. Dipartimento di Scienze Ambientali, Università degli Studi di Parma, Viale Usberti 33A, 43100, Parma, Italy aut NATIONALLICENCE 700 1- De Leo G. Dipartimento di Scienze Ambientali, Università degli Studi di Parma, Viale Usberti 33A, 43100, Parma, Italy aut NATIONALLICENCE 700 1- Crivelli A. Station Biologique de la Tour du Valat, Le Sambuc, Arles, France aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 671/1(2011-08-01), 259-265 0018-8158 671:1<259 2011 671 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer