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Tracking repeat spawning anadromous fish migrations over multiple years in a fragmented river suggests philopatry and sex-linked variation in space use

hal.structure.identifierBournemouth University [Poole] [BU]
hal.structure.identifierUniversity of Hull [United Kingdom]
dc.contributor.authorDAVIES, Peter
hal.structure.identifierBournemouth University [Poole] [BU]
dc.contributor.authorBRITTON, J. Robert
hal.structure.identifierBournemouth University [Poole] [BU]
dc.contributor.authorANDREOU, Demetra
hal.structure.identifierEnvironment Agency
dc.contributor.authorCRUNDWELL, Charles
hal.structure.identifierUniversity of Hull [United Kingdom]
dc.contributor.authorDODD, Jamie
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLEPAIS, Olivier
hal.structure.identifierUniversity of Hull [United Kingdom]
dc.contributor.authorNUNN, Andrew
hal.structure.identifierCentro de Investigação em Biodiversidade e Recursos Genéticos [Vairao] [CIBIO]
dc.contributor.authorSABATINO, Stephen
hal.structure.identifierNatural England
dc.contributor.authorVELTEROP, Randolph
hal.structure.identifierUniversity of Hull [United Kingdom]
dc.contributor.authorBOLLAND, Jonathan
dc.date.issued2024-02-18
dc.identifier.issn1015-1621
dc.description.abstractEnThere is limited knowledge of how philopatry influences the spatial ecology of iteroparous anadromous species during their spawning migrations, but this knowledge is important in understanding population responses to interventions such as river reconnection. Here, acoustic telemetry was applied to twaite shad Alosa fallax and hybrids (n = 184) during their freshwater spawning migration, enabling quantification of philopatry across spawning migrations and assessment of the factors affecting space use. Tagged fish moved a median of 7 km day−1. Their migration routes were tortuous (median ratio of total distance moved/upstream extent = 2.8), and included multiple upstream/downstream direction changes (median = 27) over a median freshwater movement distance of 247 km. Females occupied larger core areas than males, but previous spawning experience, body length, tagging status, and introgression with A. alosa did not predict core area size. Seventy-one fish returned a year after tagging, with a median freshwater residency of 33 days. Between years, intra-individual similarity in space use was significantly greater than inter-individual similarity, providing strong evidence of philopatry. These results provide insights into how spawning philopatry and phenotype influence riverine space use in a threatened anadromous species, and have implications for river reconnection efforts.
dc.language.isoen
dc.publisherSpringer Verlag
dc.title.enTracking repeat spawning anadromous fish migrations over multiple years in a fragmented river suggests philopatry and sex-linked variation in space use
dc.typeArticle de revue
dc.identifier.doi10.1007/s00027-024-01048-z
dc.subject.halSciences de l'environnement
bordeaux.journalAquatic Sciences - Research Across Boundaries
bordeaux.page34
bordeaux.volume86
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-04640042
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04640042v1
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