Migration of diadromous and landlocked smelt populations studied by otolith geochemistry

Inter-annual variability in otolith chemistry of catfish Genidens barbus from South-western Atlantic estuaries

“…Otoliths are structures composed mainly of calcium carbonate deposited as aragonite, vaterite or calcite crystals in a protein matrix (otoline), and small quantities of other chemical elements (Campana et al ., 1997). These elements are deposited in the otolith during ontogeny and as the material is not re-absorbed, their concentrations may reflect the life history of the fish (Schuchert et al ., 2010; Mai et al ., 2014; Avigliano et al ., 2015a, b; Phung et al ., 2015; Reis-Santos et al ., 2015). In particular, divalent elements such as strontium (Sr) and barium (Ba), replacing Ca in the matrix of the otolith, have been widely used to study displacements in salt gradients (Doubleday et al ., 2014), with the premise that Sr in the otolith is positively related to salinity, while Ba shows the opposite behaviour (Bath et al ., 2000; Secor & Rooker, 2000; Kraus & Secor, 2004; Martin & Thorrold, 2005; Avigliano & Volpedo, 2013).…”

Research and Monitoring plan Fish Migration River (FMR)

“…2019). Other studies focussed more on migration strategies and life history along the coast of the Netherlands including the Afsluitdijk and the Wadden Sea (Deelder 1952, 1958, Dekker and van Willigen 1997, Dekker 1998, Dekker 2000, Bult and Dekker 2007, Borcherding et al 2008, Borcherding et al 2013, Tulp et al 2013, Phung et al 2015.…”

Eindrapportage 0-monitoring Vismigratierivier Afsluitdijk : Een bureaustudie van bestaande onderzoeken voorafgaand aan de bouw van de Vismigratierivier Afsluitdijk

“…Bij de intrekmetingen van 2018 is gebleken dat de vangstverdeling over de waterkolom sterk verdeeld was met 23% onder, 69% midden en 8% boven (van de Ven, 2018 Winter 2017a). (Tulp et al 2013, Phung et al 2015 -Terugvinding (recovery).…”