Genetic and aquaculture performance differentiation among wild allopatric populations of European perch (Percidae, Perca fluviatilis)

Vanina, Tatyana; Gebauer, Radek; Toomey, Lola; Stejskal, Vlastimil; Rutegwa, Marcellin; Kouřil, J.; Bláha, Martin; Lecocq, Thomas

doi:10.1016/j.aquaculture.2018.12.071

Cited by 11 publications

(13 citation statements)

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“…www.nature.com/scientificreports www.nature.com/scientificreports/ domesticated or (ii) different practices leading to exhibition of different traits in captivity. It is already known that different populations can show different growth 10,11 and behavioural traits 12 , however, there is no information on which processes are conditioning production effectiveness. Therefore, knowledge of the processes conditioning adaptability of this species to the culture conditions, along with their domestication, are crucial elements toward the development of future breeding programs.…”

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confidence: 99%

Domestication process modifies digestion ability in larvae of Eurasian perch (Perca fluviatilis), a freshwater Teleostei

Palińska‐Żarska

Woźny

Kamaszewski

et al. 2020

Sci Rep

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to date, a comparative analysis of larval performance and digestion abilities between wild and domesticated eurasian perch has not yet been performed. eurasian perch larvae from wild and domesticated spawners were reared in the same conditions and at different development stages, growth performance variables, the expression of genes encoding digestive enzymes and specific enzymatic activity were analysed. No significant differences in hatching rate, deformity rate or swim bladder inflation effectiveness between wild and domesticated larvae were found. Specific growth rate, final total length and wet body weight were significantly lower in wild larvae, whereas higher mortality in wild larvae was observed compared to domesticated larvae. the data obtained in this study clearly indicate that during domestication, significant modification of digestion ability occurs at the very beginning of ontogeny, where domesticated fish are characterised by lower enzymatic activity and lower expression of genes encoding digestive enzymes. this probably results from the low diversity of the food offered in culture conditions, which significantly modified digestion capability. The obtained data provide an understanding of how domestication affects fish in aquaculture and may improve the planning of selective breeding programs of eurasian perch and other freshwater teleosts.Domestication of animals involves transformation of morphological, physiological, developmental and behavioural features, during which animals adapt to the environment that humans create for them 1 . Domestication was indicated as a key element allowing sustainable expansion of aquacultural production 2 , being the priority of the sector in the view of ever-growing demand of the consumers, overexploitation of nearly 80% of global fish stocks and a constantly increasing human population 3,4 . However, despite the huge importance of domestication for the aquaculture industry, there is very little known of the processes being modified along with the adaptation of the fish to the culture conditions. This applies especially to the most intensive farming technologies, such as those involving a recirculating aquaculture system (RAS), where most of the environmental factors, to which fish are exposed throughout the life cycle, are fully controlled by humans 5 .One of the most important species dedicated to RAS-based aquaculture production is the Eurasian perch Perca fluviatilis L., whose domestication began in the 1990s 6 . It is accepted that some cultured stocks of this species are at the 4 th level of domestication -the entire life cycle is closed in intensive culture conditions, without inputs of wild specimens, but there are still no selecting breeding programs successfully implemented 2,6 . The Eurasian perch is an ideal model for research on domestication processes because this is the only native European species where several generations with a clearly indicated history of origin are farmed in RAS 7,8 and, at the same time, there is still easy and wide access to ...

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confidence: 99%

Domestication process modifies digestion ability in larvae of Eurasian perch (Perca fluviatilis), a freshwater Teleostei

Palińska‐Żarska

Woźny

Kamaszewski

et al. 2020

Sci Rep

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“…Indeed, non‐domesticated or species at incipient domestication levels can display, when bred in captive conditions, differentiation for several traits impacting the aquaculture potential such as features related to growth (e.g. Vanina et al 2019), nutrition (e.g. Jonassen et al 2000), reproduction (e.g.…”

Section: Wild Intraspecific Differentiation: An Asset For Fish Farming?mentioning

confidence: 99%

“…Therefore, the risk of using a classification which might not lead to the identification of inter‐populational divergences cannot be ruled out to date, but several studies already highlighted a congruence between genetic differentiation in neutral markers and phenotypic differentiation in controlled conditions (e.g. Rosauer et al 2011; Vanina et al 2019).…”

Section: How To Take Into Account Wild Geographic Differentiation: a mentioning

confidence: 99%

“…Our approach aims to balance the complexity of multi‐trait assessment over several prospective units (though step 1’s classification allows restricting the range of possibilities regarding biological units to compare) by choosing the best part of the wild biodiversity. Indeed, gains of highlighting populations with the highest aquaculture potential can provide important benefits for fish production (see for instance for Perca fluviatilis, Mandiki et al 2004; Toomey et al 2019; Vanina et al 2019). However, consequent investment may not be operated for each new candidate.…”

Section: What Are the Limitations Of The Approach?mentioning

confidence: 99%

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Unlocking the intraspecific aquaculture potential from the wild biodiversity to facilitate aquaculture development

Toomey

Fontaine

Lecocq

2020

Reviews in Aquaculture

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Domestication of new candidate species remains a long and difficult process often resulting in unfruitful attempts. Early steps in most domestication programmes often consider species as a unity, disregarding a part of the biodiversity: the wild intraspecific geographic differentiation. Yet, this differentiation can shape local specificities, which could lead to different domestication predisposition or socio‐economic attractiveness between populations. Therefore, considering this population‐specific potential could facilitate domestication and subsequent production of new candidate species. Here, we propose a three‐step integrative approach to standardise and facilitate new domestication attempts by taking advantage of wild geographic differentiation. Step 1 consists of classifying the wild biodiversity to identify prospective units (i.e. groups of differentiated allopatric populations). Step 2 allows comparing performances of these units in standardised conditions (i.e. rearing system) through a multifunction and multi‐trait assessment. Finally, step 3 highlights units with higher aquaculture potentials through the calculation of an aquaculture potential score. This approach, here applied to fish culture for human consumption, also aims at being extended to other taxa (e.g. crustaceans, molluscs) and other production goals.

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“…swim bladder inflation rate, survival rate), organoleptic characteristics (e.g. colour, filet quality), and behaviour (cannibalism rate, group structure) have been highlighted in P. fluviatilis (Mairesse et al, 2006;Mandiki et al, 2004;Mélard et al, 2003;Pimakhin et al, 2015;Pimakhin and Zak, 2014;Toomey et al, 2019;Vanina et al, 2019). Moreover, differences in growth and survival rates between several populations (i.e.…”

Section: Potential Shaping Factors Of the Geographic Patterns Of Genementioning

confidence: 99%

Getting off on the right foot: Integration of spatial distribution of genetic variability for aquaculture development and regulations, the European perch case

et al. 2020

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Knowledge of spatial genetic variability patterns allows improving conservation actions, translocation regulations, and farming productivity. However, these genetic variability patterns are often considered after issues are observed, long after the beginning of production. By taking into account lessons from other species, we investigate the genetic variability of Perca fluviatilis, a species at a nascent stage of production. The genetic variability has been previously studied but, due to discrepancies between conclusions and methodological limits, the spatial distribution of genetic variability in P. fluviatilis has not been demonstrated conclusively. Here, we characterise the genetic variability across 84 West-Palaearctic sampling sites using mitochondrial and microsatellite markers. We aim to provide (i) a genetically-based population structure that could act as an impetus for further production improvement and (ii) guidelines for translocation regulations. Our analyses show an uneven distribution of genetic variability. Based on inter-populational genetic differentiation, we identify five large geographic scale clusters which are further divided into several subgroups. Local genetic diversity mapping highlights a spatial pattern with several hotspots, which has serious implications in the development of appropriate regulations of translocations. Moreover, we here report an association between genetic differentiations and previously reported zootechnical performances. We ultimately propose guidelines for further investigations of population-specific performances in aquaculture and potentially efficient regulations for policy-makers.

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Genetic and aquaculture performance differentiation among wild allopatric populations of European perch (Percidae, Perca fluviatilis)

Cited by 11 publications

References 49 publications

Domestication process modifies digestion ability in larvae of Eurasian perch (Perca fluviatilis), a freshwater Teleostei

Domestication process modifies digestion ability in larvae of Eurasian perch (Perca fluviatilis), a freshwater Teleostei

Unlocking the intraspecific aquaculture potential from the wild biodiversity to facilitate aquaculture development

Getting off on the right foot: Integration of spatial distribution of genetic variability for aquaculture development and regulations, the European perch case

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