Interaction of temperature and feed ration on male postsmolt maturation of Atlantic salmon (Salmo salar L.)

Martinez, Enrique Pino; Balseiro, Pablo; Stefansson, Sigurd O.; Kaneko, Nobuto; Norberg, Birgitta; Fleming, Mitchell S.; Imsland, Albert K.; Handeland, Sigurd O.

doi:10.1016/j.aquaculture.2022.738877

Cited by 15 publications

(40 citation statements)

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“…The favourable conditions the individuals (1 sea‐winter grilse) find in intensive aquaculture permit them to mature and return to the fresh water in the spring following release (Davidson et al., 2016; Martinez et al., 2023; McClure et al., 2007). With high temperature and high‐energy feed, all large males in farming conditions mature in fresh water (Martinez et al., 2023). That is, the evolved plasticity triggers novel life history trajectories in the evolutionarily new conditions of intensive aquaculture (Martinez et al., 2023).…”

Section: Results: What It Is Like To Be a Teleost Fishmentioning

confidence: 99%

“…With high temperature and high‐energy feed, all large males in farming conditions mature in fresh water (Martinez et al., 2023). That is, the evolved plasticity triggers novel life history trajectories in the evolutionarily new conditions of intensive aquaculture (Martinez et al., 2023). However, such early maturation poses a common problem in intensive aquaculture (Duncan et al., 1999; Ebbesson et al., 2007; Stefansson et al., 2007).…”

Section: Results: What It Is Like To Be a Teleost Fishmentioning

confidence: 99%

“…Thus, intensive aquaculture gives combinations of cues (Table 1) that salmon may have never encountered during their evolutionary history (Martinez et al., 2023). These combinations trigger hormonal responses that bring about ontogenetic decisions that are both unexpected and unwanted by farmers.…”

Section: Results: What It Is Like To Be a Teleost Fishmentioning

confidence: 99%

“…The biological mechanisms that kept previous salmon generations on paths to future reproduction may not work in intensive aquaculture. Certain challenges in intensive aquaculture stem from sensory data combinations that confuse the salmon and lead them to conflicting life history decisions (Duncan et al, 1999;Martinez et al, 2023). In these new situations, evolved robustness mechanisms (Kitano, 2004;Fernandez-Leon, 2011a, 2011b) may fail to keep the animal inside the evolved window of states and stages that lead to successful reproduction.…”

Section: Algorithms For Ontogeny and Behaviourmentioning

confidence: 99%

“…Artificial environments combined with artificial selection change the experiences of the fish and their life histories. Conflicts between their naturally evolved physiology, expectations and the environmental conditions in intensive production are important challenges in the industry (Duncan et al., 1999; Martinez et al., 2023).…”

Section: Introduction: the Need For A Digital Twin Of Atlantic Salmonmentioning

confidence: 99%

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Premises for a digital twin of the Atlantic salmon in its world: Agency, robustness, subjectivity and prediction

Budaev,

Dumitru,

Enberg

et al. 2024

Aquaculture Fish & Fisheries

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Aquaculture of Atlantic salmon Salmo salar is in transition to precision fish farming and digitalization. As it is easier, cheaper and safer to study a digital replica than the system itself, a model of the fish can potentially improve monitoring and prediction of facilities and operations and replace live fish in many what‐if experiments. Regulators, consumers and voters also want insight into how it is like to be a salmon in aquaculture. However, such information is credible only if natural physiology and behaviour of the living fish is adequately represented. To be able to predict salmon behaviour in unfamiliar, confusing and stressful situations, the modeller must aim for a sufficiently realistic behavioural model based on the animal's proximate robustness mechanisms. We review the knowledge status and algorithms for how evolution has formed fish to control decisions and set priorities for behaviour and ontogeny. Teleost body control is through genes, hormones, nerves, muscles, sensing, cognition and behaviour, the latter being agentic, predictive and subjective, also in a man‐made environment. These are the challenges when constructing the digital salmon. This perspective is also useful for modelling other domesticated and wild animals in Anthropocene environments.

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