Selection for Adaptation to Dietary Shifts: Towards Sustainable Breeding of Carnivorous Fish

Boucher, Richard Le; Dupont‐Nivet, Mathilde; Vandeputte, Marc; Kernéis, Thierry; Goardon, Lionel; Labbé, Laurent; Chatain, Béatrice; Bothaire, Marie Josée; Larroquet, Laurence; Médale, Françoise; Quillet, Edwige

doi:10.1371/journal.pone.0044898

Cited by 47 publications

(37 citation statements)

References 29 publications

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“…Boucher et al . () demonstrated that survival rate, mean body weight and biomass can be improved in rainbow trout after one generation of selection for the ability to adapt to a totally plant‐based diet.…”

Section: Estimates Of Genetic Gainmentioning

confidence: 99%

“…Thodesen et al (2001) studying mineral absorption in Atlantic salmon concluded that the results indicated genetic variation for this trait and that mineral absorption might be correlated with growth rate. Boucher et al (2012) demonstrated that survival rate, mean body weight and biomass can be improved in rainbow trout after one generation of selection for the ability to adapt to a totally plant-based diet. Generally, in the long run, selection for growth rate is also expected to increase disease resistance.…”

Section: Correlated Responsesmentioning

confidence: 99%

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Selection response in fish and shellfish: a review

Gjedrem

Rye

2016

Reviews in Aquaculture

204

140

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The aquaculture sector is significantly behind plant and farm animal production in applying selective breeding, in spite of the fact that it has been suggested that the world aquaculture production could be doubled in 13 years if breeding programmes were supplying stocks for the farmed species. It is estimated that as late as in 2010, only 8.2% of the world's total aquaculture production was based on material developed in selective breeding programmes. Reported estimates of genetic gain per generation for a key trait like growth rate average 13%, implying that the animal's potential for growth can be doubled in a time span of only six generations of selection, as demonstrated for major farmed species like Atlantic salmon and Nile tilapia. Likewise are reported genetic gains for improved disease resistance generally very high. This study offers an updated review of published estimates on genetic gains for a range of traits in aquaculture species. Results are highly encouraging and demonstrate a substantial potential for genetic improvement in aquatic productions, in particular for traits such as growth rate and resistance to diseases.

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Section: Estimates Of Genetic Gainmentioning

confidence: 99%

Section: Correlated Responsesmentioning

confidence: 99%

Selection response in fish and shellfish: a review

Gjedrem

Rye

2016

Reviews in Aquaculture

204

140

View full text Add to dashboard Cite

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“…The main cited reasons are decreased feed intake or lower digestibility or altered metabolic pathways observed when replacing marine proteins or marine oil individually567. However, promising results have been obtained throughout selective breeding, early life experience or new diet compositions in rainbow trout fed the fully substituted diets89. These studies open perspectives to the use, in a near future, of all plant-based diets (PBD) for salmonid feeding practices.…”

mentioning

confidence: 99%

Adaptive capacities from survival to stress responses of two isogenic lines of rainbow trout fed a plant-based diet

Sadoul

Foucard

Valotaire

et al. 2016

Sci Rep

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The composition of feed for farmed salmonids has strongly evolved during the last decades due to the substitution of fishery-derived fish oil and fishmeal by ingredients of plant origin. Little information is available regarding the effects of this transition on adaptive capacities in fish. Two rainbow trout isogenic lines, known for their divergent ability to grow on a plant-based diet (PBD), were fed for seven months from first feeding either a fully PBD or a control marine-resources diet and were compared for their growing and survival capacities over time and their behavioral and stress responses at similar sizes but different ages. Although fish displayed similar appetitive behaviour, the two lines were highly affected by the PBD translated in decreased growth and apathetic behaviour, but also stronger stress responses displayed by stronger cortisol increases and more stress-related behaviour when isolated. The two lines were found to be similarly sensitive to a PBD for the assessed stress-related parameters, but one line displayed a lower survival during the early rearing period. Overall, these results suggest that a PBD supplied to fish from the alevin stage has strong effects on physiological and behavioural parameters, with possible impairment of fish welfare, but also genome-dependent survival.

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“…Moreover, artificial selection can also greatly improve the ability to adapt farmed fish to totally vegetal‐based feeds: which is almost a reality in Atlantic salmon farming (Le Boucher et al . ).…”

Section: The Role Of Scientific Research In Ornamental Animal Feedingmentioning

confidence: 97%

“…Modern genetic methods make popular food fish, as rainbow trout, able to efficiently use totally plant‐based diets after a single generation of genetic selection (Le Boucher et al . ). Same methods can be presumably used more efficiently in ornamental fish artificial selection (pecilid or cyprinids, for instance).…”

Section: Perspectives: Toward a Sustainable Ornamental Fish Feedsmentioning

confidence: 97%

Nutrition in ornamental aquaculture: the raise of anthropocentrism in aquaculture?

Sicuro

2017

Reviews in Aquaculture

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Ornamental aquaculture nutrition is profoundly different from conventional aquaculture nutrition from several points of views as the prices, finality and diversity. This paper tries to answer to some simple questions: do modern ornamental fish feeds reflect more physiological fish needs or aquarist expectations? What are the driving forces behind the modern aquarium nutrition? On the light of the considerations made in this paper, it emerges that popularity of ornamental aquaculture is largely influenced by a progressive humanization of ornamental fish. Obesity and longevity transfer is the most evident nutritional effect of pet proximity to humans and this special kind of ‘contagion’ is observable in ornamental fish too. Assuming that aquarium fish have been humanized, ornamental fish industry has taken profit from this. A drastic change happens to fish feeds after crossing the human doorstep. This is probably ignored by humans, but not by ornamental aquafeed companies that sometimes induce erroneous customer expectations to improve their profits. Feeding an ornamental fish in our modern society represents a symbolic action more referred to humans than to fish physiological needs; therefore, human psychology affects the ornamental fish feeds quality much more than the fish physiology. This is the main and illogical conclusion of this paper. This paper tries to enlighten some unexpected relationship between us (humans) and this modern category of domesticated animals: aquarium fish and to give some possible future perspectives.

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Selection for Adaptation to Dietary Shifts: Towards Sustainable Breeding of Carnivorous Fish

Cited by 47 publications

References 29 publications

Selection response in fish and shellfish: a review

Selection response in fish and shellfish: a review

Adaptive capacities from survival to stress responses of two isogenic lines of rainbow trout fed a plant-based diet

Nutrition in ornamental aquaculture: the raise of anthropocentrism in aquaculture?

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