Embryonic and larval development of Corsican brown meagre, Sciaena umbra (Linnaeus 1758), rearing in captivity from the Mediterranean Sea

Millot, Rémi; Demolliens, Mikaël; Ducos, Salomé; Pugliese, Sally; Vanalderweireldt, Lucie; Delmas, Alban; Boussard, Alizée; Aïello, Antoine; Durieux, Eric

doi:10.1007/s10499-022-00968-7

Cited by 4 publications

(5 citation statements)

References 48 publications

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“…Generally, size heterogeneity is both the cause as well as the consequence of cannibalistic behavior [14]. However, we observed no cannibalistic behavior during the experiment, which is consistent with the previous observations of Millot et al [11] and Hamzaçebi and Can [10]. Cannibalistic behavior tends to emerge at 30 DPH [11] and between 35 and 40 DPH [10].…”

Section: Discussionsupporting

confidence: 93%

“…However, we observed no cannibalistic behavior during the experiment, which is consistent with the previous observations of Millot et al [11] and Hamzaçebi and Can [10]. Cannibalistic behavior tends to emerge at 30 DPH [11] and between 35 and 40 DPH [10]. Cannibalism is a common problem in most intensively cultured sciaenids [21,26] and other species such as the yellowtail kingfish (Seriola lalandi) [71].…”

Section: Discussionsupporting

confidence: 92%

“…The growth of S. umbra in this study is higher than that reported by Millot et al [11], who documented 9.09 ± 0.88 mm TL at 25 DPH. Compared to other larviculture species in the literature, it is also higher than that observed for various sparids, such as snapper (Pagrus auratus) (TL: 8.6 ± 0.5 mm) [42], sharp snout seabream (Diplodus puntazzo) (TL ranging from 5.0 to 5.6 mm at 25 DPH) [43], and pink dentex (Dentex gibbosus) (TL: 9.02 ± 0.37 mm at 31 DPH) [44].…”

Section: Discussioncontrasting

confidence: 85%

“…Sciaenids are considered efficient aquaculture species given their relatively simple needs to ensure successful rearing [9]. Recently, S. umbra has been proposed as a candidate for marine finfish diversification in commercial aquaculture and for restocking programs in the Mediterranean Sea because this species (i) has a fast growth rate; (ii) has shown successful spontaneous reproduction of wild fish in captivity; (iii) is of patrimonial interest; and (iv) is sought for its high-quality flesh [10,11]. Indeed, there is increased interest worldwide in fast-growing species in aquaculture, such as the greater amberjack (Seriola dumerili) and the cobia (Rachycentron canadum), where more efforts have been made [12].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Stocking Density on Survival and Growth of Brown Meagre Sciaena umbra (L.) Larvae

Millot,

Demolliens,

Filippi

et al. 2024

Fishes

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Successful aquacultural production of juvenile fish requires that the optimal rearing conditions be applied. However, for many fish species, there is a significant knowledge gap concerning these conditions. In this study, we evaluated the effects of stocking density on the survival and growth of brown meagre, Sciaena umbra (L.), during rearing trials in an experimental hatchery. This research forms part of a feasibility project to improve the aquacultural production of brown meagre. Four initial larval density treatments (5, 10, 30, and 70 larvae per L) were established. At 0, 9, 17, 22, and 25 days post-hatching, we measured the total length, coefficient of variation in length, and specific growth rate. The physicochemical water parameters remained at satisfactory levels for fish culture throughout the experiment. Lower densities promoted better growth in terms of total length, specific growth rate, and survival. We observed a significant negative correlation between larval density and length growth/survival. Thus, the low larval density treatment yielded the highest survival (48.5% ± 3.46%), growth in final total length (11.9 ± 1.09 mm), and specific growth rate (5.13% ± 0.39% per day). Increased stocking density therefore negatively affects growth and survival, reduces homogeneity, but increases the production of S. umbra larvae. This study helps identify optimal aquaculture conditions for maximizing the production of juvenile S. umbra for ecological restoration.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 92%

Section: Discussioncontrasting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Effect of Stocking Density on Survival and Growth of Brown Meagre Sciaena umbra (L.) Larvae

Millot,

Demolliens,

Filippi

et al. 2024

Fishes

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“…This approach was consistent with the study of Millot et al . ( submitted ) that assessed larval metamorphosis in hatchery‐reared S. umbra . For D. dentex , the end of metamorphosis was estimated when the caudal peduncle was fully pigmented and when the pigmentation of the fish body was nearly completed (Crec'hriou et al ., 2015 ).…”

Section: Methodsmentioning

confidence: 99%

Ontogeny of swimming performance of hatchery‐reared post‐larvae and juvenile fish: a case of two threatened Mediterranean species

Ducos

Pugliese

Demolliens

et al. 2022

Journal of Fish Biology

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Swimming performance is a well‐established key physiological parameter of fish that is highly linked to their fitness in the wild. In the context of fish restocking purposes, it therefore appears crucial to study this specific behaviour. Here, the authors investigated intra and interspecies differences in the swimming performance of hatchery‐reared post‐larvae and juveniles belonging to two Mediterranean candidate threatened species, the common dentex, Dentex dentex (Sparidae), and the brown meagre, Sciaena umbra (Sciaenidae), with body sizes ranging from 8 to 37 mm total length (TL, from 24 to 58 days post‐hatch). The swimming abilities were estimated through the calculation of their critical swimming speed (Ucrit), their relative Ucrit and their Reynolds number (Re). Two different patterns were observed between D. dentex and S. umbra, showing a different effect of ontogeny on the performance of both species. The relative Ucrit of S. umbra decreased linearly through ontogeny, whereas the relative Ucrit and Ucrit of D. dentex increased linearly through the range of sizes tested. The ontogenetic change in Ucrit of S. umbra occurred in two stages: a first stage of sharp improvement and a second stage of a slow decrease in performance. Both stages were separated by a breakpoint that coincided with the appearance of a refusal to swim behaviour that occurred shortly after the end of metamorphosis and can potentially be associated with the establishment of this species sedentary behaviour. The swimming performance of both species showed ontogenetic differences. Sciaena umbra had the highest relative performance when its body sizes were the smallest, whereas D. dentex showed the highest relative performance when its body sizes were the largest. These results will be linked to future research on both of these species concerning their escape, exploratory and predatory behaviours, and for restocking purposes to draw a more realistic overview of hatchery‐reared juvenile performance. Knowledge of both species’ behavioural and swimming performance through ontogeny is important to consider when using hatchery‐reared fish juveniles for restocking, as size‐at‐release can have a large impact on fish survival and thus on restocking success.

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Training differentially affects feeding on live prey in two marine Mediterranean fish species reared for restocking

Ducos,

Beraud,

Bégout

et al. 2024

Animal Behaviour

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Embryonic and larval development of Corsican brown meagre, Sciaena umbra (Linnaeus 1758), rearing in captivity from the Mediterranean Sea

Cited by 4 publications

References 48 publications

Effect of Stocking Density on Survival and Growth of Brown Meagre Sciaena umbra (L.) Larvae

Effect of Stocking Density on Survival and Growth of Brown Meagre Sciaena umbra (L.) Larvae

Ontogeny of swimming performance of hatchery‐reared post‐larvae and juvenile fish: a case of two threatened Mediterranean species

Training differentially affects feeding on live prey in two marine Mediterranean fish species reared for restocking

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