Effect of stocking density on growth and survival of fine flounder Paralichthys adspersus (Steindachner, 1867) larvae

Castro, Angélica; Montes, Melissa; Orihuela, Lucas; Linares-Cordova, Joel F.; Cota, Noemí; Carrera, Lili; Toledo, Pedro; Lazo, Juan Pablo

doi:10.3856/vol47-issue1-fulltext-1

Cited by 4 publications

(3 citation statements)

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“…Asimismo, se relaciona a la densidad como uno de los factores determinantes en la larvicultura, porque también afecta las interacciones sociales como agresividad, jerarquía y canibalismo, lo cual da como resultado variaciones en el tamaño, supervivencia y rendimiento del crecimiento en las poblaciones de peces (Hatziathanasiou et al 2002). La escala del cultivo (laboratorio o comercial) puede verse también afectada por la densidad de siembra larval (Álvarez-González et al 2001;Conides y Glamuzina 2001;Hitzfelderg et al 2006;Benetti et al 2008;Castro et al 2019).…”

Section: Discussionunclassified

Evaluación de la densidad de cultivo en el crecimiento y supervivencia de larvas de chita Anisotremus scapularis (TSCHUDI, 1846) en laboratorio

et al. 2021

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La larvicultura de peces marinos en condiciones de laboratorio está influenciada por factores como la densidad de cultivo, la nutrición, la calidad del agua, que afectan directamente el crecimiento y la supervivencia. Este estudio tuvo como objetivo determinar el efecto de la densidad de cultivo sobre el crecimiento, la supervivencia y el factor de condición de las larvas de chita Anisotremus scapularis, en condiciones de laboratorio. Las larvas se obtuvieron mediante el desove natural de reproductores mantenidos en condiciones controladas. Se evaluaron cuatro densidades de cultivo 5, 10, 15 y 20 larvas L-1. La larvicultura se llevó a cabo durante 60 días a 19 °C en un sistema estático compuesto por 12 tanques con una capacidad de 100 L cada uno. Los resultados mostraron diferencias significativas en la tasa de crecimiento específico (% g día-1), el factor de condición y la supervivencia. La densidad de población de 10 larvas L-1 obtuvo los mejores resultados 8,46 ± 0,08% g día-1 y 3,38 ± 0,31% cm día-1, supervivencia 12,54 ± 0,47% y K de 2,23 ± 0,31 durante el experimento, por lo cual se sugiere como densidad de cultivo inicial.

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Section: Discussionunclassified

Evaluación de la densidad de cultivo en el crecimiento y supervivencia de larvas de chita Anisotremus scapularis (TSCHUDI, 1846) en laboratorio

et al. 2021

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“…Under farmed conditions, stocking density is a major factor that affects fish growth and survival (Castro et al, 2019;Espinoza-Ramos et al, 2022). Many authors reported that increasing stocking density leads to higher competition for food among the population, inhibiting their individual growth rate and implicit increase intragroup variability (Trezando et al, 2006;.…”

Section: Introductionmentioning

confidence: 99%

Effect of Krill Oil Supplementation and Stocking Density on Growth Performance, Proximate Composition, and Organo-somatic Indices of Cyprinus carpio

Năstac

Crețu²,

Dediu³

et al. 2023

EJBIO

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This study was conducted to investigate the effects of krill oil supplementation on growth performance, proximate composition and organo-somatic indices of Cyprinus carpio, reared in a recirculating aquaculture system, at different stocking densities. Four experimental diets were formulated: LD - low density (15 fish/rearing unit- 3.5 kg/m3), where fish were fed with commercial feed, HD - high density (35 fish/rearing unit-8 kg/m3 fed with commercial feed), LD-KO - low density, where fish were fed with commercial feed supplemented with 5 g/kg feed krill oil, and HD-KO- high density, were fish were fed with commercial feed supplemented with 5 g/kg feed krill oil. After 60-days of rearing, final fish weight and individual weight gain was significantly higher (P˂0.05) in fish stocked in lower density, with better values in LD-KO groups. Also, the best values of FCR, SGR and PER were obtained in LD-KO groups. Regarding the proximate composition of meat, no significant differences (P˃0.05) were registered between the experimental variants. The organo-somatic indices revealed no significant differences (P˃0.05) in the cardiosomatic index, while hepatosomatic, splenosomatic, and visceral index differed significantly (P˂0.05) between the experimental variants. Accordingly, we can conclude that supplementation of carp diet with 5 g/kg feed krill oil can improve growth performance, without any modification at proximate composition of meat.

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“…Therefore, in order to improve the production of eggs and larvae under laboratory conditions, we propose as the main objective of this study, the conditioning and characterization of the reproductive performance and spawn quality of a first-generation broodstock born in captivity (F1), and compare egg and larval quality with spawns from wild broodstock. pump (9500 BTU, Aqua Logic, USA), a biofilter (4.5 ft 3 floating bed filter, Aqua Logic, USA), and a seawater sterilizer with ultraviolet lamp (Emperor Aquatics, Aqua Logic, USA) (Carrera et al, 2018). Thirty first-generation (group F1) Peruvian grunts broodstock were housed in recirculation system 1 (RAS 1), with females weighing on average 469.89 ± 132.57 g with 27.39 ± 2.19 cm in length and males 466.23 ± 174.60 g with 27.71 ± 2.91 cm.…”

Section: Introductionmentioning

confidence: 99%

Reproductive performance and egg and larvae quality from first generation peruvian grunt Anisotremus scapularis (Tschudi, 1846): a comparative analysis with spawns from wild broodstock

Cota Mamani,

Carrera Santos,

Castro-Fuentes

et al. 2023

Front. Mar. Sci.

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Anisotremus scapularis is a marine fish distributed along the Peruvian coast that is commercially important in local markets. IMARPE started research on this species aimed to condition breeders and control reproduction in captivity and avoid dependence on wild broodstock. Therefore, the present study characterized and compared the reproductive performance, quality of eggs and larvae between a first generation domesticated broodstock (F1B) and a wild broodstock (WB). The F1B and WB broodstocks were conditioned in recirculation systems (RAS) to spawn naturally from August 2021 to August 2022. The following parameters were recorded for each spawn, the total number of eggs, percentages of viable eggs and fertilization, and hatching, and biochemical analyses on each spawn were performed. Progeny from each spawning were assessed for survival activity index (SAI), and at 20 days’ post-hatch (DPH), the temperature tolerance index (TTI) was analyzed. WB had significantly higher (P<0.05) egg production, egg diameter, oil globule diameter, and SAI than those of F1B. However, the percentage of viable eggs and hatching showed significantly higher values (P<0.05) in F1B spawns. A low correlation (r<0.50) was observed between the evaluated reproductive parameters in A. scapularis broodstock; nevertheless, it was significant in some cases. No significant differences were observed in protein, lipid, carbohydrate, or ash content in eggs, but ash content in the 20 DPH larvae differed, with higher values in F1B. A principal component analysis (PCA), indicated a strong relationship between F1B broodstock eggs and fatty acids DHA, 16:0, 18:1n-9, and 18:2n-6; whereas fatty acids 18:0, 20:4n-3, 22:5n-3, and EPA had a high connection with WB eggs. At 20 DPH, F1B larvae had a strong link with 18:1n-9, DHA, and 18:2n-6; while WB larvae were found to have a high association with 16:1n-7, EPA, 22:5n-3, and ARA. Based on these results we concluded that F1B broodstock has better egg quality in terms of egg viability and hatching rate and similarity in most larval quality parameters compared to WB, making the F1 domesticated broodstock (F1B) an alternative to establish a broodstock under captive conditions and thus contributing to the aquaculture development of the species.

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Effect of stocking density on growth and survival of fine flounder Paralichthys adspersus (Steindachner, 1867) larvae

Cited by 4 publications

References 0 publications

Evaluación de la densidad de cultivo en el crecimiento y supervivencia de larvas de chita Anisotremus scapularis (TSCHUDI, 1846) en laboratorio

Evaluación de la densidad de cultivo en el crecimiento y supervivencia de larvas de chita Anisotremus scapularis (TSCHUDI, 1846) en laboratorio

Effect of Krill Oil Supplementation and Stocking Density on Growth Performance, Proximate Composition, and Organo-somatic Indices of Cyprinus carpio

Reproductive performance and egg and larvae quality from first generation peruvian grunt Anisotremus scapularis (Tschudi, 1846): a comparative analysis with spawns from wild broodstock

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