Efeito do chumbo em nível de oxigênio e amônia no camarão rosa (Farfantepeneaus paulensis) em relação à salinidade

Doi, Sônia Assami; Collaço, Fátima Lisboa; Sturaro, L.G.R.; Barbieri, Edison

doi:10.15343/0104-7809.2012364594601

Cited by 16 publications

(16 citation statements)

References 18 publications

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“…Despite their regulatory capability, the oxygen consumption rate was indeed inhibited after X. kroyeri was exposed to high concentrations of Cd. Similar results were also observed in different shrimp species (AMAND et al, 1999;CHINNI et al, 2002;WU and CHEN, 2004;BARBIERI et al, 2004;DOI et al, 2012).…”

Section: Discussionsupporting

confidence: 80%

Effects of cadmium and zinc on oxygen consumption and ammonia excretion of the sea-bob shrimp, according to the temperature

Barbieri¹,

Branco²,

Santos³

et al. 2013

Bol. Inst. Pesca

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Penaeid shrimps are important resources for worldwide fisheries and aquaculture. In Brazil, Xiphopenaeus kroyeri is an important commercially exploited species, and is an ideal animal for studying the impairment caused by the effects of heavy metals that are often detected in coastal areas. The main purpose of the present study was to detect the acute toxicity of Cd and Zn to X. kroyeri and to investigate their effects on oxygen consumption and ammonium excretion in different temperatures (25 ºC, 20 ºC, 15 ºC), which have not been carried out in this species before. First of all, we examined the acute toxicity of Cd and Zn to X. kroyeri 24, 48, 72, and 96-h medium lethal concentration (LC50). Furthermore, we also found that exposure of shrimp to Cd and Zn caused an inhibition in oxygen consumption of 52.50% and 52.63%, respectively, relative to the control. However, after separate exposure to Cd and Zn, elevations in ammonium excretion were obtained, which were 85.00% and 89.47% higher than the control, respectively. The results shown that Cd and Zn performs higher toxicities to X. kroyeri at higher temperature.Keywords: Marine pollution; heavy metal; Xiphopenaeus kroyeri ; toxicity; LC50 EFEITO DO CÁDMIO E ZINCO NA EXCREÇÃO DE AMÔNIA E CONSUMO DE OXIGÊNIO DO CAMARÃO SETE-BARBAS, DE ACORDO COM A TEMPERATURA RESUMOOs camarões são importantes recursos marinhos explorados pela pesca e aquicultura. No Brasil, Xiphopenaeus kroyeri é uma importante espécie comercialmente explorada e um animal ideal para estudar o impacto causado por efeitos de metais pesados que frequentemente são detectados em áreas costeiras. O principal objetivo do presente trabalho foi determinar a toxicidade aguda do Cd e Zn para o X. kroyeri e investigar seus efeitos no consumo de oxigênio e na excreção de amônia em diferentes temperaturas, uma vez que tais parâmetros ainda não foram determinados para a referida espécie. Primeiramente, foram determinadas a toxicidade aguda (LC50) do Cd e Zn, para X. kroyeri por um período de 24, 48, 72 e 96 horas em três temperaturas (25 ºC, 20 ºC, 15 ºC). Os resultados revelaram que para camarões expostos ao Cd e Zn houve uma inibição do consumo de oxigênio de 52,50% e 52,63%, respectivamente, para a mais baixa temperatura (15 °C). Entretanto, para a excreção de amônia, houve um aumento de 85,00% e 89,47% para a mais alta concentração e temperatura utilizadas em relação ao controle. Conclui-se, portanto, que as toxicidades de Cd e Zn foram mais altas nas temperaturas e concentrações mais elevadas.

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Section: Discussionsupporting

confidence: 80%

Effects of cadmium and zinc on oxygen consumption and ammonia excretion of the sea-bob shrimp, according to the temperature

Barbieri¹,

Branco²,

Santos³

et al. 2013

Bol. Inst. Pesca

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“…However, at 25°C and at the highest ammonia‐N (3 mg L −1 ) concentration, the effects were pronounced. According to Fry () and Doi, Collaço, Sturaro and Barbieri (), temperature is an environmental factor that can affect the organisms in a lethal, controlled, indirect or direct way depending on the time and/or stimulus intensity, spatial extension of this influence and the organism capacity to be adjusted to terminal variations.…”

Section: Discussionmentioning

confidence: 99%

Acute toxicity of ammonia in Pacu fish (Piaractus mesopotamicus, Holmberg, 1887) at different temperatures levels

Barbieri¹,

Bondioli²

2013

Aquac Res

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Piaractus mesopotamicus juveniles (total length 12 AE 0.5 mm) were exposed to different concentrations of ammonia-N (un-ionized plus ionized ammonia as nitrogen), using the static renewal method at different temperature levels (15, 20 and 25°C) at pH 7. The 24, 48, 72, 96 h LC 50 values of ammonia-N in P. mesopotamicus juveniles were 5.32, 4.19, 3.79 and 2.85 mg L À1 at 15°C; 4.81, 3.97, 3.25 and 2.50 mg L À1 at 20°C; and 4.16, 3.79, 2.58 and 1.97 mg L À1 at 25°C respectively. The 24, 48, 72, 96 h LC 50 values of NH 3 -N (un-ionized ammonia as nitrogen) were 0.018, 0.014, 0.013, 0.009 mg L À1 at 15°C temperature; 0.023, 0.019, 0.016 and 0.012 mg L À1 at 20°C; 0.029, 0.026, 0.018 and 0.014 mg L À1 at 25°C. The temperature increase from 15 to 25°C caused an increase of ammonia-N susceptibility by 21.80%, 9.55%, 31.92% and 30.87%, after 24, 48, 72 and 96 h exposure respectively. Furthermore, we found that exposure of fish to ammonia-N caused an elevation in total haemoglobin and blood glucose with an increase of 2 mg L À1 concentration. Ammonia levels tolerated, especially in different temperatures levels, have important implications for the management of aquaculture.

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“…On shrimp, due to being poikilotherm, the metabolic rate varies directly along with the change of the ambient temperature. On the other hand, salinity changes influence on metabolic rate as a result of a series of amendments on physico-chemical (desorption and solubility) and physiological (osmoregulation, membrane permeability) processes and it may also Effects of Lead in white shrimp (Litopenaeus schmitti) metabolism regarding salinity exist a complex interaction between these two variables, with one acting as a modulation factor upon the effect of another 12,13 .…”

Section: Introductionmentioning

confidence: 99%

Effects of Lead in white shrimp (Litopenaeus schmitti) metabolism regarding salinity

et al. 2014

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Penaeid shrimps are important resources for worldwide fisheries and aquaculture. In Brazil, Litopenaeus schmitti is an important commercially exploited species, and the ideal animal for studying the impairment caused by the effects of heavy metals often detected in coastal areas. The main purpose of the present study was to detect the acute toxicity of lead (Pb) in L. schmitti and to investigate its effect on oxygen consumption and ammonia excretion for different salinities. This has not been studied in this species before. Lead was significantly more toxic at salinity 8 than at 20 and 33. The oxygen consumption and ammonia excretion were estimated through experiments performed on each of the fifteen possible combinations of three salinities (33, 20 and 8), at the temperature of 21 °C. Cadmium showed a significant improvement in oxygen consumption at salinity 8, and results show that the oxygen consumption increases with respect to the lead concentration. At the highest lead concentration employed (2.12 10-2 mg/L), the salinity 8 and the temperature at 21 °C, oxygen consumption increases 131% in relation to the control. In addition, after separate exposure to lead, elevation in ammonia excretion was obtained, which was 88.2% higher than the control. The results show that lead is more toxic to L. schmitti at lower salinities.

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Efeito do chumbo em nível de oxigênio e amônia no camarão rosa (Farfantepeneaus paulensis) em relação à salinidade

Cited by 16 publications

References 18 publications

Effects of cadmium and zinc on oxygen consumption and ammonia excretion of the sea-bob shrimp, according to the temperature

Effects of cadmium and zinc on oxygen consumption and ammonia excretion of the sea-bob shrimp, according to the temperature

Acute toxicity of ammonia in Pacu fish (Piaractus mesopotamicus, Holmberg, 1887) at different temperatures levels

Effects of Lead in white shrimp (Litopenaeus schmitti) metabolism regarding salinity

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