Uso do sal comum (NaCl) e densidade de estocagem durante a larvicultura de Betta splendens.

Dias, Joel Artur Rodrigues; Abe, Higo Andrade; Sousa, Natalino Costa; Ramos, Fabrício Menezes; Cordeiro, Carlos Alberto Martins; Fujimoto, Rodrigo Yudi

doi:10.20950/1678-2305.2016v42n3p719

Cited by 10 publications

(17 citation statements)

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“…Salinized water as a strategy for increase stocking density in Heros severus larviculture, an Amazonian ornamental fish Larviculture is considered the most important and critical stage of aquaculture production chain, once it is the phase of higher animal fragility (Evangelista et al, 2020;Reis et al, 2021;Santos et al, 2021). 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).…”

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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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

Self Cite

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“…Nesse âmbito, estudos vêm sendo desenvolvidos com o intuito de definir condições ambientais, nutricionais e protocolos de manejo que promovam o aumento dos índices produtivos. Como a determinação da profundidade ideal da água (Gomes et al, 2020), o efeito da utilização de água salinizada (Fabregat et al, 2017) e a densidade de estocagem das larvas (Dias et al, 2016) nos primeiros dias de vida.…”

Section: Introductionunclassified

Microverme da aveia como estratégia alimentar na larvicultura do Betta splendens

Gomes

Amâncio

Cavalcanti

et al. 2022

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A larvicultura é um período crítico na produção de peixes ornamentais, devido às necessidades produtivas e nutricionais das larvas nos primeiros dias de vida. O fornecimento de alimento vivo é essencial para a sobrevivência das larvas, sendo a Artemia sp. o alimento mais utilizando, apensar de representar custo elevado. Tornando necessária a busca por alimentos vivos de menor custo como o nematóide microverme da aveia. O presente trabalho foi desenvolvido com o objetivo de avaliar, por meio de índices de crescimento, desenvolvimento e sobrevivência, o fornecimento do microverme de forma exclusiva ou associado a artêmia e plâncton para larvas Betta splendens. As larvas alimentadas com microverme e artêmia apresentaram maior peso final, comprimento final, ganho em comprimento, maior taxa de desenvolvimento específico e sobrevivência. A taxa de uniformidade do lote no tratamento que recebeu apenas microverme não diferiu dos demais tratamentos, no entanto, as larvas submetidas ao regime alimentar com microverme e artêmia apresentaram melhor taxa de uniformidade quando comparas as que foram alimentadas com microverme e plâncton. A estratégia alimentar visando fornecer microverme e artêmia de forma conjunta promoveu os melhores índices de crescimento, desenvolvimento e sobrevivência na larvicultura inicial do peixe ornamental Betta splendens.

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“…In the economic aspect, the ornamental fish market moves around 70% of the global capital related to the activity in developing countries, with around 90% of these animals being produced in captivity (Dias et al, 2018). Brazil is considered one of the main exporters in South America, with a record 41 million ornamental fish exported in 2008 (SISCOMEX, 2020).…”

Section: Introductionmentioning

confidence: 99%

Sex Reversal in Siamese Fighting Fish Larvae by Thermal Management

et al. 2021

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The present study evaluated the influence of thermal management during the larviculture of Betta splendens on survival and sex ratio, aiming to increase the proportion of males. Newly hatched larvae were subjected to different thermal regimes, namely, T25, T28, T30 and T33 (25, 28, 30 and 33ºC, respectively). The experiment was laid out in a completely randomized design, with 4 treatments and 10 repetitions. Thermal treatment was maintained until 15 days post-hatch (DPH). Mortality was determined at the end of the thermal regime and again at 45 DPH. At the end of the experiment, the number of males and females obtained in the different thermal treatments was counted to analyze the obtained sex ratio. There was a significant effect on mortality as a function of temperature only at 15 DPH (p <0.001), with the lowest values recorded in treatments T25, T28 and T30. In terms of sex ratio, up to 65% of males were obtained in treatment T33 (p = 0.037). In conclusion, thermal management during the larval period can be a strategy to increase the proportion of males, but the increase in mortality due to the rise in temperature should be considered.

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Uso do sal comum (NaCl) e densidade de estocagem durante a larvicultura de Betta splendens.

Cited by 10 publications

References 0 publications

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

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

Microverme da aveia como estratégia alimentar na larvicultura do Betta splendens

Sex Reversal in Siamese Fighting Fish Larvae by Thermal Management

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