7 documents found, page 1 of 1
Environmental enrichment in fish aquaculture: a review of fundamental and pract...
Arechavala Lopez, Pablo; Cabrera‐Álvarez, Maria J.; Maia, CM; Saraiva, JoãoEnvironmental enrichment (EE) can improve the welfare of captive fish. Its objective is to provide new sensorial and motor stimulation in order to help meet their behavioural, physiological, morphological and psychological needs, whilst reducing stress and frequency of abnormal behaviours. In fish farms, rearing environments are usually designed from a human perspective and based on economic requirements, mainl...
The effect of tank cover on welfare of farmed Nile tilapia
Saraiva, João L.; Nogueirinha, Margarida; Teodósio, Rita; Aragão, Cláudia; Engrola, Sofia; Arechavala Lopez, PabloWelfare in aquaculture is a pressing topic. One of the main measures to improve the life of farmed fish is implementing environmental enrichment, which can include the addition of structural covers to rearing tanks. Here we test the effects of tank covers (fully covered, 50 % covered and uncovered) in an all-male population (N = 75 tagged individuals: 5 individuals per tank, 5 tanks per treatment) of farmed Nil...
Accelerometry of seabream in a sea-cage: is acceleration a good proxy for activ...
Palstra, Arjan P.; Arechavala Lopez, Pablo; Xue, Yuanxu; Roque, AnaActivity assessment of individual fish in a sea-cage could provide valuable insights into the behavior, but also physiological well-being and resilience, of the fish population in the cage. Acceleration can be monitored continuously with internal acoustic transmitter tags and is generally applied as a real-time proxy for activity. The objective of this study was to investigate the activity patterns of Gilthead ...
Behaviour and body patterns of Octopus vulgaris facing a baited trap: first-cap...
Dominguez Lopez, Marta; Follana-Berná, Guillermo; Arechavala Lopez, PabloThis study highlights for the first time individual differences in ethology and vulnerability of Octopus vulgaris (i.e. body postures, movements and skin displays) facing passive baited traps. Common octopus exposed to a baited trap during three consecutive first-capture tests exhibited diverse behavioural and body pattern sequences resembling when the octopus searches for and hunts its wild prey. Overall, they...
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...
Welfare of fish—no longer the elephant in the room
Saraiva, João L.; Arechavala Lopez, PabloThe concept of fish welfare is fairly recent and was overlooked for many years, based on a popular misconception that fish were “stupid” creatures devoid of any kind of sentience or mental capability [...] (excerto da primeira página).