The distribution of the European sea bass, Dicentrarchus labrax, in Irish waters

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dc.contributor.advisor Culloty, Sarah C. en
dc.contributor.advisor Mcginnity, Philip en
dc.contributor.advisor O'Maoiléidigh, Niall en O'Neill, Ross 2017-12-07T09:36:09Z 2017-12-07T09:36:09Z 2017 2017
dc.identifier.citation O'Neill, R. 2017. The distribution of the European sea bass, Dicentrarchus labrax, in Irish waters. PhD Thesis, University College Cork. en
dc.identifier.endpage 268 en
dc.description.abstract In Irish waters comparatively little is known about the life history of the European sea bass (Dicentrarchus labrax) compared to other fish species. Based on long term extensive offshore surveys, the geographical location of sea bass catches and similarities of their life history trajectories in other regions suggest those found in offshore Irish waters may be a prespawning feeding aggregation which is part of a larger aggregation extending from the south coast of Ireland to the Bristol Channel. Particle tracking model results show that it may be possible that the dispersal of sea bass larvae from putative spawning areas in inshore and offshore waters may influence recruitment at regional, national and international scales. Acoustic tracking of sea bass in inshore waters found some evidence of inshore movement between localities while also providing evidence of site fidelity. The residency of up to one third of tagged fish during the assumed spawning season in inshore waters suggested potential inshore spawning or skipped spawning. The long absence periods for two thirds of tagged fish during this same period may suggest substantial offshore migration. The findings using pop-off satellite archival tags suggest that at least some sea bass that originate in both Irish and British coastal waters may aggregate in the same approximate location in the Celtic Sea during the assumed peak spawning period. Genetic analysis supports the contention that sea bass from inshore Irish waters, from offshore waters in the Celtic Sea and from the North Sea may be part of the same panmictic population. The evidence presented here points to sea bass occurring in Irish waters as being part of the larger trans-Celtic Sea population. Therefore, the sustainable management and conservation of the species occurring in Irish waters must be undertaken on a basis which is international, as well as local. en
dc.description.sponsorship Marine Institute Beaufort Marine Research Award in Fish Population Genetics (Grant-Aid Agreement No. BEAU/GENE/02) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher University College Cork en
dc.rights © 2017, Ross O'Neill. en
dc.rights.uri en
dc.subject Sea bass en
dc.subject Ireland en
dc.subject Marine Institute en
dc.subject University College Cork en
dc.subject Dicentrarchus labrax en
dc.subject European sea bass en
dc.subject Telemetry en
dc.subject Particle tracking en
dc.subject Model en
dc.subject Satellite telemetry en
dc.subject Acoustic en
dc.subject Fisheries research en
dc.title The distribution of the European sea bass, Dicentrarchus labrax, in Irish waters en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral en
dc.type.qualificationname PhD (Science) en
dc.internal.availability Full text available en No embargo required en
dc.description.version Accepted Version
dc.contributor.funder Marine Institute en
dc.description.status Not peer reviewed en Biological, Earth & Environmental Sciences en
dc.check.type No Embargo Required
dc.check.reason No embargo required en
dc.check.opt-out Not applicable en
dc.thesis.opt-out false
dc.check.embargoformat Not applicable en
dc.internal.conferring Autumn 2017 en

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© 2017, Ross O'Neill. Except where otherwise noted, this item's license is described as © 2017, Ross O'Neill.
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