Influence of salinity, temperature and photoperiod on eye asymmetry of Amphirion ocellaris larvae

Evangelista, Isis Ribeiro; Santos, Luciano Neves dos

doi:10.1016/j.aquaculture.2020.734976

Cited by 5 publications

(4 citation statements)

References 25 publications

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“…Larviculture is considered a critical stage of fish production (Evangelista et al., 2020; Herath & Atapaththu, 2013; Kolkovski, 2001; Santos & Luz, 2009). The success of this phase is determined by a combination of factors such as nutrition, immunity, water quality, stocking density (Herath & Atapaththu, 2013) and temperature (Kujawa et al., 1997; Kupren et al., 2011).…”

Section: Introductionmentioning

confidence: 99%

Stocking density in Colossoma macropomum larviculture, a freshwater fish, in recirculating aquaculture system

2020

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This study aimed to investigate stocking density during larviculture of Colossoma macropomum in recirculating aquaculture system with slightly saline water. Densities of 10 (D10), 30 (D30) and 50 (D50) larvae/L were tested with five replicates each. Larvae were fed with Artemia nauplii during the first 15 days and with commercial diet from day 16 to day 30. Water was maintained at a salinity of 2.01 ± 0.41 g of salt/L, and performance and survival were evaluated throughout the experiment. At the end of the experiment, larvae of each tank were classified according to size as small—S (<18.0 mm and <0.08 g), medium—M (>18.0 mm and <22.2 mm, >0.08 g and <0.15 g) and large—L (>22.2 mm and >0.15 g), and the size distribution was calculated for each stocking densities evaluated. Larval weight, length and specific growth rate were not affected by the tested stocking densities throughout the experiment (p > .05). Heterogeneity was recorded at 30 days of larviculture for all tested densities with a predominance of class M animals. Survival during feeding with Artemia was not affected by the tested densities (p > .05). Survival during feeding with commercial diet was highest for D10 and lowest for D30 (p < .05). Global survival, considering the experiment as a whole, was similar among the tested stocking densities (p > .05). Larviculture of C. macropomum can be successfully carried out at stocking densities of up to 50 larvae/L during the first 30 days of rearing in slightly saline water in recirculating aquaculture system.

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Section: Introductionmentioning

confidence: 99%

Stocking density in Colossoma macropomum larviculture, a freshwater fish, in recirculating aquaculture system

2020

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“…Regarding the steno/eury-haline status of A. ocellaris, the results of survival and growth under different salinities suggest this is an euryhaline species, since it is unharmed when produced at salinity 15‰, and therefore does not require the use of full strength sea water for its commercial production. It is also note worth mentioning that larvae of A. ocellaris reared in brackish water show a lower percentage of asymmetric eyes, when compared to those reared in seawater, thus suggesting a less stressful condition at intermediate salinity [27].…”

Section: Discussionmentioning

confidence: 98%

“…The trials were conducted at the Laboratory of Marine Fish Culture (LAPEM), Institute of Oceanography, of the Federal University of Rio Grande (FURG), in Southern Brazil. Larvae of the clownfish Amphiprion ocellaris variety "Black" were reared at salinity 25‰ [27] with adaptations of previously described methodologies [28]. Larvae were reared in a tank with a static system.…”

Section: Larval Stage and Ethicsmentioning

confidence: 99%

Growth and Oxidative Stress of Clownfish Amphiprion ocellaris Reared at Different Salinities

Carneiro,

Medeiros,

Monserrat

et al. 2024

Fishes

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Aquaculture of ornamental marine fish is often conducted in recirculating aquaculture systems (RAS) using artificial seawater. Considering the cost of salts to produce artificial seawater (salinity 35‰), we investigated the effect of different salinities (5, 15, 25, and 35‰) on survival, growth, and oxidative stress responses of juvenile clownfish Amphiprion ocellaris. All fish died when reared at salinity 5‰, but at all other salinities survival was ≥95% in the other treatment groups. There was no influence of salinity on growth and oxidative stress responses of clownfish reared at salinities 15, 25, and 35‰, except for the activity of glutathione S-transferase (GST) of fish reared at 25‰, which was significantly lower compared to those reared in salinity 35‰. The salinity of home aquariums is usually 35‰, so even though clownfish can be reared in brackish water, they need to be transferred to full strength seawater (35‰) in order to be commercialized. Therefore, we also evaluated the responses of acute transference of fish reared at 15 to salinity 35‰. There were no mortalities associated with acute salinity transference and no oxidative damage was observed either. The total capacity against peroxyl radicals (ACAP) was immediately increased after fish were placed in salinity 35‰, and remained high after 168 h (7 days), helping fish to deal with oxidative threats. In conclusion, it is possible to rear juvenile clownfish at 15‰ without harming growth or inducing oxidative stress, possibly reducing costs of water salinization. They can be transferred from brackish water to salinity 35‰ immediately before going to the retail market, with no mortality or oxidative damage.

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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).…”

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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Influence of salinity, temperature and photoperiod on eye asymmetry of Amphirion ocellaris larvae

Cited by 5 publications

References 25 publications

Stocking density in Colossoma macropomum larviculture, a freshwater fish, in recirculating aquaculture system

Stocking density in Colossoma macropomum larviculture, a freshwater fish, in recirculating aquaculture system

Growth and Oxidative Stress of Clownfish Amphiprion ocellaris Reared at Different Salinities

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

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