Optimal management improves Flowerhorn fish larviculture

Abe, Higo Andrade; Reis, Ryuller Gama Abreu; Barros, Francisco Alex Lima; Paixão, Peterson Emmanuel Guimarães; Meneses, Juliana Oliveira; Souza, João Carlos Nunes de; Fujimoto, Rodrigo Yudi

doi:10.1111/are.15085

Cited by 3 publications

(3 citation statements)

References 25 publications

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“…Para la misma especie, se evaluaron densidades entre 10 y 50 larvas L -1 y se registró una supervivencia superior al 78% durante los primeros 15 días de larvicultura con el uso de alimento vivo y una temperatura promedio del agua de 28ºC (38,39). De manera similar al presente estudio, diferentes concentraciones de presas tampoco afectaron la supervivencia de R. aspera (32), L. alexandri (13,34), H. lacerdae (33), pez de la flor (Amphilophus labiatus × Amphilophus trimaculatus) (17) e Hypsolebias radiseriatus (35). Sin embargo, se registraron mejores resultados de supervivencia después de 30 días de larvicultura (15 días de alimentación exclusiva con una dieta comercial) a la temperatura más alta (T32), con un promedio de 94,38 ± 6.12%, independientemente de la concentración de presas, lo que refuerza la importancia del rendimiento y una mejor aceptación de la dieta comercial.…”

Section: Discussionunclassified

“…Los peces tienen temperaturas óptimas para el crecimiento, la supervivencia (2,3,4,5), el comportamiento, la fisiología (2,6,7,8), la eficiencia alimentaria y el uso de nutrientes (7,9,10), que pueden cambiar según la edad y el tamaño (11,12). La larvicultura puede considerarse la etapa más importante y crítica en la cadena de producción de acuicultura (13,14), debido a la sensibilidad de los organismos a la infección patógena, al manejo nutricional y a los cambios en los parámetros del agua (15,16,17). La temperatura puede ser un factor determinante y limitar la calidad larval durante el desarrollo temprano (1), lo que puede afectar directamente el comportamiento y el metabolismo e influir en el crecimiento y la supervivencia (1,8,18,19,20).…”

Section: Introductionunclassified

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Effects of temperature and live prey concentration on Colossoma macropomum larviculture

Costa dos Santos,

Soares da Costa Julio,

De Sena Souza

et al. 2024

Rev MVZ Córdoba

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Objective. The study evaluated the performance and survival of Colossoma macropomum larvae at different temperatures and concentrations of prey. Materials and methods. Two temperatures (28 and 32ºC) (T) and two initial daily concentrations (500 and 1,000 Artemia nauplii per larva) (CP) of prey were used. These concentrations were increased every 5 days during the first 15 days of cultivation. From the 16th to the 30th day, the larvae received exclusively a commercial diet. Results. In the first 7 days, weight (P), total length (TL) and daily specific growth rate (SGR) were higher for T32 treatments (p<0.05). After 15 days, P, TL and SGR were higher for CP1000 (p<0.05). After 22 days, P and TL suffered the effect of the initial concentration of prey and water temperature with higher values for CP1000 and T32 (p<0.05). At the end of 30 days of cultivation, P was affected only by water temperature with higher values for T32 (p<0.05). The TL showed an effect of temperature and initial concentration of prey with higher values for CP1000 and T32 (p<0.05). During feeding with a commercial diet (days 16-30 of cultivation), survival was higher for T32 (94.38±6.12%) (p<0.05), with no difference for initial prey concentration. Conclusions. It is concluded that the larviculture of C. macropomum must be carried out with a temperature of 32° C and that the food management must be differentiated during the first 15 days, positively influenced in the period of feeding with ration.

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Section: Discussionunclassified

Section: Introductionunclassified

Effects of temperature and live prey concentration on Colossoma macropomum larviculture

Costa dos Santos,

Soares da Costa Julio,

De Sena Souza

et al. 2024

Rev MVZ Córdoba

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“…The larvae are sensitive to several stressful factors such as pathogenic infections, productive managements and changes in water parameters, which can lead to high mortality rates and reduce productivity (Zuanon et al, 2011;Dias et al, 2016;Abe et al, 2019). Thus, the success of larviculture is determined by the optimal culture conditions, aiming to guarantee the adequate fish development (Dias et al, 2016;Campelo et al, 2019a;Abe et al, 2021). In this scenario, the effects of salinized water and stocking density of fish are some of the factors that should be studied, since they can directly affect the larviculture management (Luz et al, 2012;Dias et al, 2016;Santos et al, 2021).…”

Section: /8mentioning

confidence: 99%

Salinized water as a strategy for increase stocking density in Heros severus larviculture, an Amazonian ornamental fish

Oliveira¹,

Silveira²,

Nascimento³

et al. 2023

Bol. Inst. Pesca

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The aim of this study was to evaluate the effect of different salinized water (0, 3 and 6 g L-1) and stocking densities (10, 15 and 20 larvae L-1) in Heros severus larviculture. The experimental design was completely randomized, in a 3x3 factorial design, with three replicates. For this, a total of 405 larvae of H. severus were randomly distributed in 27 aquariums (1L) according to the treatments and after 15 days all the larvae were measured, weighed and counted. Higher values for final length, length gain and specific growth rate were observed in H. severus larvae raised at any stocking density tested at 3 g L-1 of salinized water (p < 0.05). The final weight and weight gain followed the same trend of the length, being higher in fish submitted to 3 g L-1 of salinized water (p < 0.05). On the other hand, the salinized water of 6 g L-1 was detrimental to larvae weight uniformity and survival rate (p < 0.05). The fish stocked at densities of 15 or 20 larvae L-1 presented the best results of final weight and weight gain (p < 0.05). The stocking density of 20 larvae L-1 in salinized water at 3 g L-1 is recommended for H. severus larviculture.

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Feeding protocol for the Amazonian ornamental cichlid Apistogramma cacatuoides and a histological approach to the nutritional condition of larvae

Zanfurlin‐Lima,

Abe,

Gonçalves‐Junior

et al. 2024

Animal Physiology Nutrition

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The aim of this study was to develop a feeding protocol for the larviculture of Apistogramma cacatuoides, using the histological approach to larval nutrition conditions. For this, three experiments were carried out. Experiment 1 was carried out in a randomized design to determine the optimal amount of Artemia nauplii (AN) per larva, and three treatments were evaluated: P1—feeding with 25 A. nauplii per larva (AN/L) during the first 5 days, followed by 50 AN/L from the 6th to the 10th day and 100 AN/L from the 11th to the 20th day; P2 and P3—37 and 50 AN/L during the first 5 days, 75 and 100 AN/L from the 6th to the 10th day and 150 and 200 AN/L from the 11th to the 20th day. Experiment 2 was carried out in a randomized design to determine the daily frequency of feeding and evaluated four feeding frequencies: F1—feeding only once a day (09:00); (F2)—feeding twice a day (09:00 and 17:00); F3—feeding three times a day (09:00, 11:30 and 17:00); and F4—feeding four times a day (09:00, 11: 30, 14:00 and 17:00). Experiment 3 lasted 40 days and was conducted in a randomized design to evaluate three periods for the beginning of the feeding transition: WE10:AN for 10 days, followed by 3 days of co‐feeding and commercial feed until the end of the experimental period; WE15:AN for 15 days, followed by 3 days of co‐feeding and commercial feed; WE20:AN for 20 days, followed by 3 days of co‐feeding and commercial feed. The results of this study showed that, for the best development of the larvae, they should receive the feeding protocol 50−100−200 AN/L (P3) until the 20th day of exogenous feeding. From the 21st day, the transition to inert food should begin with 3 days of co‐feeding, and feeding during larviculture should be carried out at a frequency of twice a day; this protocol provided a good nutritional status for the larvae, as shown by the histological approach.

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Optimal management improves Flowerhorn fish larviculture

Cited by 3 publications

References 25 publications

Effects of temperature and live prey concentration on Colossoma macropomum larviculture

Effects of temperature and live prey concentration on Colossoma macropomum larviculture

Salinized water as a strategy for increase stocking density in Heros severus larviculture, an Amazonian ornamental fish

Feeding protocol for the Amazonian ornamental cichlid Apistogramma cacatuoides and a histological approach to the nutritional condition of larvae

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