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Adult twaite shad spawning migration in the North Sea and the Scheldt estuary
Contact: Coeck, Johan

Beschikbaarheid: Vrij beschikbaar na embargo periode
Data are initially restricted, but the access condition relaxes to academic or unrestricted once a specified period of time after an event (such as collection, publication, completion of QC procedures or project cessation) has elapsed

Beschrijving
However, shads are very sensitive fish showing adverse reactions to handling and anesthesia, specifically twaite shad. Therefore, internal implantation of electronic tags, such as acoustic, radio and data storage tags is challenging. Preliminary tests are conducted to assess the impact of external tagging on twaite shad survival in Belgium. Fish were caught in the Zeeschelde, with two mid-water beam trawls from an anchored boat in spring 2015, 2016 and 2017 and 39 shads were tagged in total, with coded acoustic transmitters from Vemco. Beside an evaluation of the taggin technique, the data give valuable insights into the migration behaviour of twaite shad in the Scheldt estuary and in the North Sea directly after downstream migation. The dataset will be extended and analysed further in the coming years. meer

Although twaite shad (Alosa fallax Lacépède 1803) declined substantially in many European rivers, its numbers increased since 2007 in the Belgian Zeeschelde. Since twaite shad is of conservation concern (Habitat directive), further knowledge on its migration and reproductive behaviour is needed and acoustic telemetry would be a relevant tool to assess these behaviours.

Scope
Thema's:
Biologie > Ecologie - biodiversiteit, Biologie > Vis
Kernwoorden:
Marien/Kust, Acoustic telemetry, External tagging, Fish movement, Paaimigraties, Tidal estuary, Tracking data, Vismigratie, ANE, België, Belgisch Continentaal Plat (BCP), ANE, België, Belgische kust, ANE, Noordzee, ANE, Western Scheldt, België, Boven Zeeschelde, Alosa fallax (Lacepède, 1803)

Geografische spreiding
ANE, België, Belgisch Continentaal Plat (BCP) [Marine Regions]
ANE, België, Belgische kust [Marine Regions]
ANE, Noordzee [Marine Regions]
ANE, Western Scheldt [Marine Regions]
België, Boven Zeeschelde

Spreiding in de tijd
Vanaf 2015 [Gestart]

Taxonomic coverage
Alosa fallax (Lacepède, 1803) [WoRMS]

Bijdrage door
Vlaamse overheid; Beleidsdomein Omgeving; Instituut voor Natuur- en Bosonderzoek (INBO), meerdata creator
Universiteit Gent (UGent), meerdata creator

Gerelateerde datasets
Maakt deel uit van:
LifeWatch observatory data: fish acoustic receiver network, meer

Publicatie
Gebaseerd op deze dataset
Breine, J. et al. (2017). Successful external acoustic tagging of twaite shad Alosa fallax (Lacépède 1803). Fish. Res. 191: 36-40. https://dx.doi.org/10.1016/j.fishres.2017.03.003, meer
Breine, J. et al. (2015). Monitoring van de visgemeenschap in het Zeeschelde-estuarium. Ankerkuilcampagnes 2015. Rapport van het Instituut voor Natuur- en Bosonderzoek, INBO.R.2015.11338975. Instituut voor Natuur- en Bosonderzoek: Brussel. 60 + bijlagen pp., meer

Dataset status: Gestart
Data type: Data
Data oorsprong: Sensor platform
Metadatarecord aangemaakt: 2018-01-03
Informatie laatst gewijzigd: 2018-01-03
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