The effect of triploidy on the culture performance, deformity prevalence, and heart morphology in Atlantic salmon

Fraser, Thomas W.K.; Hansen, Tom; Skjæraasen, Jon Egil; Mayer, Ian; Sambraus, Florian; Fjelldal, Per Gunnar

doi:10.1016/j.aquaculture.2013.09.034

Cited by 56 publications

(49 citation statements)

References 66 publications

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“…Most of these fish appear healthy under optimal growth conditions (Benfey, 2015, Fraser et al, 2013, Fraser et al, 2012a. Triploidy is generally seen as a way of improving growth, health and quality of farmed fish, as energy will be invested in these three factors only, and not in maturation.…”

Section: Induced Polyploidymentioning

confidence: 99%

“…Triploidy is generally seen as a way of improving growth, health and quality of farmed fish, as energy will be invested in these three factors only, and not in maturation. However, some species and strains of fish do experience adverse health issues, as morphological, physiological and behavioral irregularities have for example been reported for salmon (Fraser et al, 2012a, Dunham, 2004, Fraser et al, 2013, Benfey, 2001, Fraser et al, 2015a, Fraser et al, 2015b, Taylor et al, 2013, Fraser et al, 2012b. The observed health problems in triploid salmon can be due to suboptimal rearing conditions (Fraser et al, 2012a), hence animal welfare can be improved by optimizing diet and conditions.…”

Section: Induced Polyploidymentioning

confidence: 99%

“…Induced triploidy is connected to health issues and higher sensitivity to sub-optimal rearing conditions , Fraser et al, 2012a, Benfey, 2001, Fraser et al, 2013. Changes in brain morphology have also been documented (Fraser et al, 2012b).…”

Section: Induction Of Triploidy and Implications For Welfarementioning

confidence: 99%

“…Replacing diploid fish with triploid fish might yield economic losses for the producers if measures are not taken to optimize their rearing conditions and welfare (Fraser et al, 2013). Such measures might influence consumer's choice.…”

Section: Induction Of Triploidy and Implications For Welfarementioning

confidence: 99%

See 3 more Smart Citations

Approaches for delaying sexual maturation in salmon and their possible ecological and ethical implications

Iversen

Myhr

Wargelius

2016

Journal of Applied Aquaculture

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show abstract

Section: Induced Polyploidymentioning

confidence: 99%

Section: Induced Polyploidymentioning

confidence: 99%

Section: Induction Of Triploidy and Implications For Welfarementioning

confidence: 99%

Section: Induction Of Triploidy and Implications For Welfarementioning

confidence: 99%

See 2 more Smart Citations

Approaches for delaying sexual maturation in salmon and their possible ecological and ethical implications

Iversen

Myhr

Wargelius

2016

Journal of Applied Aquaculture

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show abstract

“…Nevertheless, farmed salmon continue to escape into the wild, and other mitigation measures, such as removal of escapees from the spawning grounds and/or removal of the ability to reproduce through sterilization of farmed salmon, need to be considered. Recent work on the performance of triploid (sterile) farmed salmon in commercial production has been promising (Taylor et al 2013, Fraser et al 2013, and the Norwegian industry is taking the lead by making triploid salmon eggs commercially available (T. Hansen pers. obs.).…”

Section: Introductionmentioning

confidence: 99%

Triploid (sterile) farmed Atlantic salmon males attempt to spawn with wild females

Fjelldal¹,

Wennevik²,

Fleming³

et al. 2014

Aquacult. Environ. Interact.

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Genetic interaction between farmed escapees and wild conspecifics represents one of the major environmental challenges faced by the Atlantic salmon aquaculture industry. In order to mitigate genetic interactions, triploid (sterile) farmed fish can be produced. However, triploids may still develop secondary sexual characteristics, and potentially attempt to spawn with wild fish. Here, triploid farmed salmon males were placed into 2 spawning arenas containing either a wild and a farmed female, or a wild and a farmed female and wild males. Qualitative observations demonstrated that triploid male Atlantic salmon displayed the full range of spawning behaviors of wild males, and stimulated the wild female to spawn in the absence of wild males. Quantitative aspects of the observed behaviors, such as their frequency among triploid males and the competitive ability of farmed triploid males compared with diploid farmed and wild males, require investigation before full-scale production of triploid salmon is initiated commercially.

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3D heart morphological changes in response to developmental temperature in zebrafish: More than ventricle roundness

Dimitriadi

Geladakis

Koumoundouros

2020

Journal of Morphology

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A new, three-dimensional geometric morphometric approach was assessed to study the effect of developmental temperature on fish heart shape utilizing geometric morphometrics of three-dimensional landmarks captured on digitally reconstructed zebrafish hearts. This study reports the first three-dimensional analysis of the fish heart and demonstrates significant shape modifications occurring after three developmental temperature treatments (T D = 24, 28 or 32 C) at two distinct developmental stages (juvenile and adult fish). Elevation of T D induced ventricle roundness in juveniles, males and females. Furthermore, significant differences that have not been described so far in heart morphometric indices (i.e., ventricle sphericity, bulbus arteriosus elongation and relative location, heart asymmetry) were identified. Sex proved to be a significant regulating factor of heart shape plasticity in response to T D. This methodology offers unique benefits by providing a more precise representation of heart shape changes in response to developmental temperature that are otherwise not discernable with the previously described two-dimensional methods. Our work provides the first evidence of three-dimensional shape alterations of the zebrafish heart adding to the emerging rationale of temperature-driven plastic responses of global warming and seasonal temperature disturbances in wild fish populations and in other ectothermic vertebrates as well (amphibians and reptiles).

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The effect of triploidy on the culture performance, deformity prevalence, and heart morphology in Atlantic salmon

Cited by 56 publications

References 66 publications

Approaches for delaying sexual maturation in salmon and their possible ecological and ethical implications

Approaches for delaying sexual maturation in salmon and their possible ecological and ethical implications

Triploid (sterile) farmed Atlantic salmon males attempt to spawn with wild females

3D heart morphological changes in response to developmental temperature in zebrafish: More than ventricle roundness

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