Publication
Linking personality and appraisal modulators in fish
| datacite.subject.fos | Ciências Naturais::Ciências da Terra e do Ambiente | pt_PT |
| dc.contributor.advisor | Dinis, Maria Teresa | |
| dc.contributor.advisor | Oliveira, Catarina | |
| dc.contributor.advisor | Oliveira, Rui F. | |
| dc.contributor.advisor | Mackenzie, Simon | |
| dc.contributor.author | Cerqueira, Marco Alexandre Cavaco | |
| dc.date.accessioned | 2017-02-14T16:48:12Z | |
| dc.date.available | 2017-02-14T16:48:12Z | |
| dc.date.issued | 2016-11-29 | |
| dc.date.submitted | 2016 | |
| dc.description | Tese de doutoramento, Ciências do Mar, da Terra e do Ambiente, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2016 | |
| dc.description.abstract | The reason why some individuals from the same fish population react so differently under similar aquaculture husbandry practices or to any other stressful situation is at the core of today’s fish welfare research. In this context, the large individual variation in the physiological or behavioural response under stressful conditions is now accepted as reflection of distinct personality traits and of divergent cognitive evaluation that the individual makes of the situation, i.e. on the way the stressor is appraised. This thesis aimed to uncover which appraisal criteria fish use, the interplay with their personality traits, the underlying neurophysiological mechanisms and the potential application of psychological modulators of the stress response to improve fish welfare. Thus, the experimental work was oriented towards: i) investigating whether pre-existing inherent traits in behaviour and physiology affect the outcome of exposure to environmental stressors in Gilthead seabream (Sparus aurata) and Atlantic seabass (Dicentrarchus labrax) (Chapter II.1 and Chapter II.2); ii) evaluating the effect of predictability on the onset of action-related responses to aversive and appetitive stimuli (Chapter III.1); iii) inferring how predictability stressor modulates the cognitive stress response (Chapter III.2); iv) investigating how controllability improves coping ability on both seabream and seabass (Chapter IV.1); v) examining the relationship between thermal choice and animal personality using Nile tilapia (Oreochromis niloticus) as model (Chapter IV.2). Differences in behaviour, physiology and brain states measurements support specific appraisal and motivations in fish, according to the prospect of reward or punishment. This seems to be, nevertheless, highly dependent of both species - and contextspecificity. In addition they suggest that predictable stimuli and social support alongside with perception of control can be used as psychological modulators of the stress response to make animals more resilient and empowered under sustainable farming systems. The link between personality and appraisal deserves further investigation as evidences are narrow. The work developed in the core of this thesis has brought new insights on how to manipulate fish´s ability to cope with changes in their environment, ensuring positive outcomes in terms of welfare, fitness and survival. | pt_PT |
| dc.identifier.tid | 101380062 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.1/8987 | |
| dc.language.iso | eng | pt_PT |
| dc.relation | AQUAculture infrastructures for EXCELLence in European Fish research | |
| dc.subject | Aquaculture | pt_PT |
| dc.subject | Environmental appraisal | pt_PT |
| dc.subject | Personality | pt_PT |
| dc.subject | Psychological manipulation | pt_PT |
| dc.subject | Welfare | pt_PT |
| dc.title | Linking personality and appraisal modulators in fish | pt_PT |
| dc.type | doctoral thesis | |
| dspace.entity.type | Publication | |
| oaire.awardTitle | AQUAculture infrastructures for EXCELLence in European Fish research | |
| oaire.awardURI | info:eu-repo/grantAgreement/EC/FP7/262336/EU | |
| oaire.fundingStream | FP7 | |
| project.funder.identifier | http://doi.org/10.13039/501100008530 | |
| project.funder.name | European Commission | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | doctoralThesis | pt_PT |
| relation.isProjectOfPublication | 16bef47e-1575-4152-be2a-e6c4d1fd3569 | |
| relation.isProjectOfPublication.latestForDiscovery | 16bef47e-1575-4152-be2a-e6c4d1fd3569 | |
| thesis.degree.grantor | Universidade do Algarve, Faculdade de Ciências e Tecnologia | |
| thesis.degree.level | Doutor | |
| thesis.degree.name | Ciências do Mar, da Terra e do Ambiente | pt_PT |