17 documents found, page 1 of 2
Stressor controllability modulates the stress response in fish
Cerqueira, Marco; Millot, Sandie; Silva, Tomé; Félix, Ana S.; Castanheira, Maria Filipa; Rey, Sonia; MacKenzie, Simon; Oliveira, Gonçalo A.Background In humans the stress response is known to be modulated to a great extent by psychological factors, particularly by the predictability and the perceived control that the subject has of the stressor. This psychological dimension of the stress response has also been demonstrated in animals phylogenetically closer to humans (i.e. mammals). However, its occurrence in fish, which represent a divergent vert...
Addressing the welfare needs of farmed lumpfish: knowledge gaps, challenges and...
Garcia de Leaniz, Carlos; Gutierrez Rabadan, Carolina; Barrento, Sara I.; Stringwell, Rebecca; Howes, Paul N.; Whittaker, Ben A.; Minett, Jessica F.Lumpfish (Cyclopterus lumpus L.) are increasingly being used as cleaner fish to control parasitic sea lice, one of the most important threats to salmon farming. However, lumpfish cannot survive feeding solely on sea lice, and their mortality in salmon net pens can be high, which has welfare, ethical and economic implications. The industry is under increasing pressure to improve the welfare of lumpfish, but litt...
Effects of structural environmental enrichment on welfare of juvenile seabream ...
Arechavala Lopez, Pablo; Diaz-Gil, C.; Saraiva, João L.; Moranta, D.; Castanheira, Maria Filipa; Nuñez-Velázquez, S.; Ledesma-Corvi, S.; Mora-Ruiz, M.R.Current production systems of finfish aquaculture, and in particular intensive farming systems, can cause welfare problems leading not only to poor condition of the fish but also to a decrease in product quality. Adding structural environmental enrichment (EE) to bare rearing environments may improve the welfare of certain cultured fish. In this study we experimentally demonstrate the positive effects of adding...
A global assessment of welfare in farmed fishes: the FishEthoBase
Saraiva, João; Arechavala Lopez, Pablo; Castanheira, Maria Filipa; Volstorf, Jenny; Heinzpeter Studer, BilloFish welfare is an essential issue that needs to be tackled by the aquaculture industry. In order to address it, studies have been limited to a small number of species and the information is generally scattered. In order to have a consistent overview of the welfare of farmed fishes, we present the FishEthoBase, an open-access database that ultimately aims to provide information on the welfare of all fish specie...
Cognitive appraisal of environmental stimuli induces emotion-like states in fish
Cerqueira, Marco; Millot, Sandie; Castanheira, Maria Filipa; Félix, A. S.; Oliveira, Gonçalo A.; Oliveira, C. C.; Martins, C. I.; Oliveira, Rui FilipeThe occurrence of emotions in non-human animals has been the focus of debate over the years. Recently, an interest in expanding this debate to non-tetrapod vertebrates and to invertebrates has emerged. Within vertebrates, the study of emotion in teleosts is particularly interesting since they represent a divergent evolutionary radiation from that of tetrapods, and thus they provide an insight into the evolution...
Cognitive appraisal of environmental stimuli induces emotion-like states in fish
Cerqueira, M.; Millot, S.; Castanheira, Maria Filipa; Félix, Ana Sofia; Silva, T.; Oliveira, Gonçalo; Oliveira, C. C.; Martins, C. I. M.The occurrence of emotions in non-human animals has been the focus of debate over the years. Recently, an interest in expanding this debate to non-tetrapod vertebrates and to invertebrates has emerged. Within vertebrates, the study of emotion in teleosts is particularly interesting since they represent a divergent evolutionary radiation from that of tetrapods, and thus they provide an insight into the evolution...
Coping styles in farmed fish: consequences for aquaculture
Castanheira, Maria Filipa; Conceicao, Luis; Millot, Sandie; Rey, Sonia; Begout, Marie-Laure; Damsgard, Borge; Kristiansen, Tore; Hoglund, ErikIndividual differences in physiological and behavioural responses to stressors are increasingly recognised as adaptive variation and thus raw material for evolution and fish farming improvements including selective breeding. Such individual variation has been evolutionarily conserved and is present in all vertebrate taxa including fish. In farmed animals, the interest in consistent trait associations, that is c...
Are coping styles consistent in the teleost fish Sparus aurata through sexual m...
Castanheira, Maria Filipa; Martinez Paramo, S.; Figueiredo, F.; Cerqueira, Marco; Millot, Sandie; Oliveira, Catarina C. V.; Martins, Catarina I. M.Individual differences in behaviour and physiological responses to stress are associated with evolutionary adaptive variation and thus raw material for evolution. In farmed animals, the interest in consistent trait associations, i.e. coping styles, has increased dramatically over the last years. However, one of limitations of the available knowledge, regarding the temporal consistency, is that it refers always ...
Are personality traits consistent in fish? The influence of social context
Castanheira, Maria Filipa; Cerqueira, Marco; Millot, Sandie; Gonçalves, Rui A.; Oliveira, Catarina C. V.; Conceição, Luis E. C.; Martins, Catarina I. M.Individual differences in behavioural and physiological responses to challenges are progressively accepted as adaptive variation and reveal a strong degree of evolutionary conservation throughout the vertebrate taxa. Previous studies in gilthead seabream (Sparus aurata) suggested that individual differences in behaviour reflect distinct coping styles or personality, contrasting consistent traits associations. O...
Use of conditioned place preference/avoidance tests to assess affective states ...
Millot, Sandie; Cerqueira, Marco; Castanheira, Maria Filipa; Overli, Oyvind; Martins, Catarina I. M.; Oliveira, Rui FilipeAnimal welfare has been defined as the balance between positive and negative experiences or affective states. Despite the growing evidence of complex cognitive abilities and the expression of affective states such as pain and fear, very little is known about ability to experience memory based affective states in non-mammalian animal models. The goal of this study was to validate conditioned place preference/avo...