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| Skov, Peter V.; Joao de Jesus Gregersen, Kim; Gesto, Manuel; Jokumsen, Alfred. |
| The timing with which salmonid larvae emerge from their gravel nests is thought to be correlated with a particular suite of behavioural and physiological traits that correspond to the stress coping style of the individual. Among these traits, aggressiveness, dominance and resilience to stress, are potentially interesting to exploit in aquaculture production. In the present study a series of experiments were performed, with the purpose of characterising behavioural, metabolic and production related traits in rainbow trout juveniles from different emergence fractions. Newly hatched rainbow trout were sorted according to their emergence time from an artificial nest. The early, middle, and late fractions were retained and assessed for their physiological... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2019 |
URL: http://orgprints.org/36307/1/Skov%20et%20al%20Comp%20Biochem%20Physiol%20A.pdf |
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| Lazado, Carlo Cabacang; Lund, Ivar; Skov, Peter V.; Jokumsen, Alfred; Gesto, Manuel; Nguyen, Huy Quang; Pedersen, Per Bovbjerg. |
| Circadian rhythms established by the endogenous clocks enable organisms to anticipate periodic and cyclic changes in their environment. This internal time-keeping system is highly conserved amongst animals and provides them with adaptive advantages as biological processes can be scheduled to occur at the most crucial times of the day. Circadian rhythm is emerging as an important regulator of immune functions. However, there is a paucity of information on the influence of this biological phenomenon in the immune mechanisms of teleost fish. A series of studies was conducted to investigate the circadian rhythms of systemic and mucosal innate immunity using model (i.e., zebrafish, Danio rerio) and non-model (i.e., permit, Trachinotus falcatus; rainbow trout,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Specific methods; Health and welfare. |
| Ano: 2017 |
URL: http://orgprints.org/32862/1/Lazado%20et%20al%20EAS%202017%20RED.pdf |
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| Skov, Peter V.. |
| Behavioural and physiological results demonstrated that different emergence fractions of rainbow trout fry differed in certain characteristics. Early emerging fractions were more bold, they displayed more exploratory behaviour and recovered faster from startling compared to intermediate and late emerging fish. There were no differences in metabolic parameters of different emergence fractions, however, early emerging fractions had a smaller oxygen debt following chasing, and repaid it quicker. Early emerging fractions had a smaller cortisol response following a low water level challenge, but mobilization of glycogen stores did not differ between fractions. Early emerging fractions had a higher rate of weight loss in the face of starvation, probably linked... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2018 |
URL: http://orgprints.org/32724/1/Stirling_P_V_Skov_Feb2018.pdf |
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| Gesto, Manuel; Skov, Peter V.; Jokumsen, Alfred. |
| In wild salmonid fish, specific individual behavioral traits have been correlated with the timing of fry emergence from their gravel spawning nests; Early emerging fish display more aggressive behavior and have a higher probability of becoming socially dominant, compared to fish that emerge at a later stage. Apart from aggression and dominance, other behavioral and metabolic traits, such as boldness, metabolic rate, or growth, have also been linked to emergence time. Altogether, the traits of early- and late-emerging fish resemble those of the proactive and reactive stress-coping style, respectively. As proactive fish are considered more resilient to stress, it may be desirable to select these for aquaculture production. However, it is currently unclear to... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Breeding and genetics; Health and welfare; Aquaculture. |
| Ano: 2017 |
URL: http://orgprints.org/31479/1/Gesto%20et%20al.%202017_Emergence%20Time%20and%20Skin%20Melanin_Frontiers%20in%20Neuroscience.pdf |
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