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首页> 外文期刊>Archives of Environmental Contamination and Toxicology >Accumulations of Nitrite and Nitrate in the Tissues of Penaeus monodon Exposed to a Combined Environment of Elevated Nitrite and Nitrate
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Accumulations of Nitrite and Nitrate in the Tissues of Penaeus monodon Exposed to a Combined Environment of Elevated Nitrite and Nitrate

机译：亚硝酸盐和硝酸盐混合环境下斑节对虾组织中亚硝酸盐和硝酸盐的积累

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摘要

Penaeus monodon (11.86 ± 0.63 g) exposed individually to six different nitrite and nitrate regimes [nitrite at 0.002 (control), 0.360, and 1.455 mM combined with nitrate at 0.005 (control) and 7.275 mM] in 25 ppt sea water were examined for the nitrite and nitrate concentrations in tissues and nitrite uptake and nitrate uptake after 24 h in 25.3°C. In P. monodon following exposure to 1.455 mM nitrite only, nitrite levels increased by factors of 0.33, 1.05, 1.36, 1.79, 2.10, 2.16, 2.21, and 3.58 in muscle, hepatopancreas, gill, foregut, hemolymph, heart, eyestalk, and midgut, respectively, over the ambient nitrite level. In P. monodon, following exposure to combined solutions of 1.455 mM nitrite and 7.275 mM nitrate, nitrite levels were factors of 0.34, 1.05, 1.44, 1.86, 2.21, 2.30, 2.67, and 3.83 in muscle, hepatopancreas, gill, foregut, heart, hemolymph, eyestalk, and midgut, respectively, over the ambient nitrite levels, whereas nitrate levels were factors of 0.06, 0.11, 0.27, 0.29, 0.45, 0.51, 0.57, and 0.61 in muscle, hepatopancreas, foregut, heart, hemolymph, gill, midgut, and eyestalk, respectively, over the ambient nitrate levels. It is concluded that incorporation of nitrite is converted to nitrate in midgut, heart, hemolymph, foregut, and eyestalk, whereas incorporation of nitrate in tissues is converted to nitrite and accumulated in eyestalk when P. monodon are exposed to combined nitrite and nitrate environments.
机译：检查了在25 ppt海水中分别暴露于六种不同亚硝酸盐和硝酸盐体系[0.002（对照），0.360和1.455 mM的亚硝酸盐以及0.005（对照）和7.275 mM的硝酸盐的亚硝酸盐）的对虾（11.86±0.63 g）。在25.3°C下24小时后，组织中亚硝酸盐和硝酸盐的浓度以及亚硝酸盐的吸收和硝酸盐的吸收。仅在暴露于1.455 mM亚硝酸盐后的斑节对虾中，肌肉，肝胰腺，腮，eg，前肠，血淋巴，心脏，眼部和眼睛的亚硝酸盐水平分别提高了0.33、1.05、1.36、1.79、2.10、2.16、2.21和3.58倍。中肠分别超过环境亚硝酸盐水平。在斑节对虾中，暴露于1.455 mM亚硝酸盐和7.275 mM硝酸盐的混合溶液中后，肌肉，肝胰腺，腮、,、前肠，心脏中的亚硝酸盐水平分别为0.34、1.05、1.44、1.86、2.21、2.30、2.67和3.83的因子。 ，血淋巴，眼球和中肠分别超过环境亚硝酸盐水平，而硝酸盐水平是肌肉，肝胰腺，前肠，心脏，血淋巴，g中的0.06、0.11、0.27、0.29、0.45、0.51、0.57和0.61的因子，中肠和眼球分别超过环境硝酸盐水平。结论是，当斑节对虾暴露于亚硝酸盐和硝酸盐的混合环境中时，亚硝酸盐的掺入在中肠，心脏，血淋巴，前肠和眼球中转化为硝酸盐，而组织中的硝酸盐转化为亚硝酸盐并在眼球中积累。

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    S.-Y. Cheng; J.-C. Chen;

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    Department of Aquaculture National Taiwan Ocean University Keelung Taiwan 202 Republic of China;

    Department of Aquaculture National Taiwan Ocean University Keelung Taiwan 202 Republic of China;

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