Moreover, with the prolongation of poisoning time at various AN concentrations, the mortality rate of fish showed an increasing trend.
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Effect of dissolved oxygen and ammonia nitrogen on <i>Culter alburnus</i>: Physiology, biochemistry, and molecular analyses.
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The high-concentration AN group showed a trend of first increasing and then slowly decreasing, reaching a maximum value at 12 h and then decreasing again, and the value at 96 h was lower than that in the control group ( Fig. 5 C).