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首页> 外文期刊>North American Journal of Aquaculture >Physiological Responses of Yellow Perch to Hypoxia, Air Exposure, and Bleeding
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Physiological Responses of Yellow Perch to Hypoxia, Air Exposure, and Bleeding

机译:黄鲈对缺氧,空气暴露和出血的生理反应

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摘要

The North American Yellow Perch Perca flavescens is a promising candidate species for aquaculture. To evaluate potential problems resulting from husbandry practices, we measured changes in the levels of blood glucose, pH, pO(2), pCO(2), hematocrit, Na+, K+, Ca2+, and Cl- in response to hypoxia, blood withdrawal, and exposure to air at five time intervals over 24 h. Results were examined against resting or baseline values. Hypoxic conditions induced significant decreases in blood pH, pO(2), and Na+ concentration and increases in K+, blood glucose, and hematocrit. Bleeding led to significant decreases in blood Na+, Cl-, and hematocrit and a nearly five-fold increase in blood glucose. Blood pH, pO(2), and hematocrit decreased and pCO(2), K+, and glucose decreased at 2 h after air exposure, were over-compensated for at 6 h, and returned slowly to levels near baseline through 24 h; Na+ and Ca2+ concentrations decreased and remained low through 24 h. Further research defining responses to culture practices and correlations with growth rate, disease resistance, and other critical traits in Yellow Perch is warranted. Our findings suggest that commercial production would benefit from adoption of practices that minimize disturbance to cultured Yellow Perch, as well as development of culture stocks more tolerant of culture conditions.
机译:北美黄鲈Perca flavescens是有前途的水产养殖候选物种。为了评估饲养管理产生的潜在问题,我们测量了低氧,抽血,血糖,pH,pO(2),pCO(2),血细胞比容,Na +,K +,Ca2 +和Cl-的水平变化,并在24小时内以五个时间间隔暴露于空气中。检查结果相对于静止值或基线值。低氧条件引起血液pH,pO(2)和Na +浓度显着降低,而K +,血糖和血细胞比容升高。出血导致血液中Na +,Cl-和血细胞比容显着降低,血糖升高近五倍。空气暴露后2 h,血液pH,pO(2)和血细胞比容降低,pCO(2),K +和葡萄糖降低,在6 h时过度补偿,并在24 h内缓慢恢复至接近基线的水平。 Na +和Ca2 +浓度降低并在24小时内保持较低水平。有必要进行进一步的研究来确定对文化习俗的反应以及与黄鲈的生长速度,抗病性和其他关键性状的相关性。我们的研究结果表明,商业生产将受益于采用对养殖黄鲈的干扰最小化的做法,以及对文化条件更具耐受性的文化种群的发展。

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