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首页> 外文期刊>Comparative biochemistry and physiology, Part A. Molecular and integrative physiology >Effect of variation in photoperiod and light intensity on oxygen consumption, lactate concentration and behavior in crayfish Procambarus clarkii and Procambarus digueti
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Effect of variation in photoperiod and light intensity on oxygen consumption, lactate concentration and behavior in crayfish Procambarus clarkii and Procambarus digueti

机译：光周期和光照强度的变化对小龙虾克氏原螯虾和迪氏原螯虾的耗氧量，乳酸浓度和行为的影响

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摘要

The effects of light intensity and duration on metabolic and behavioral parameters of two species of crayfish, Procambarus clarkii and Procambarus digueti, were studied. Sixty animals of each species were submitted to high irradiance conditions of two different photoperiod lengths, one normal light/dark (LD) 12:12 and one extreme LD 20:4 for 2 weeks. Hemolymph, lactate and oxygen consumption were determined throughout the experimental period. Simultaneously in 18 additional animals of each species, motor activity was individually recorded under the same control and experimental conditions. Both species showed a decrease in oxygen uptake and an increase in hemolymph lactate concentration. The statistical significance of this finding was higher for LD 20:4. This extreme condition evoked a significant decrease of motor activity in P. clarkii and a high mortality rate in P, digueti. P. digueti did not survive after the experiment, whereas P. clarkii survived and adapted to the laboratory conditions. Changes in metabolic and behavioral parameters could indicate different adaptation abilities in these species. (C) 1998 Elsevier Science Inc. [References: 27]
机译：研究了光强度和持续时间对两种小龙虾Procambarus clarkii和Procambarus digueti的代谢和行为参数的影响。每个物种的60只动物都接受了两种不同光周期长度的高辐照条件，其中一种是正常的明/暗（LD）12:12，另一种是极限LD 20：4，持续2周。在整个实验期间确定血淋巴，乳酸和氧气消耗。同时在每种物种的另外18只动物中，在相同的对照和实验条件下分别记录了运动活动。两种物种均显示出氧摄取的减少和血淋巴乳酸盐浓度的增加。对于LD 20：4，该发现的统计学意义较高。这种极端状况引起克拉克假单胞菌的运动活动显着下降，而迪格蒂氏菌的死亡率很高。实验后digueti不能存活，而clarkii可以存活并适应实验室条件。代谢和行为参数的变化可能表明这些物种的适应能力不同。 （C）1998 Elsevier Science Inc. [参考：27]

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