Respiration of Rhyzopertha dominica (F.) at reduced oxygen concentrations
Respiration of Rhyzopertha dominica (F.) at reduced oxygen concentrations
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DOI：
10.1016/s0022-474x(02)00076-0
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发表时间：
2004-01-01
影响因子：
2.7
通讯作者：
Azrieli, A
中科院分区：
文献类型：
--
作者：
Emekci, M;Navarro, S;Azrieli, A
在30℃和70%的相对湿度下，将不同发育阶段的幼虫暴露在氮气中含1%、2%、3%、5%、10%或15%氧(O-2)的空气中。呼吸频率用气相色谱仪测定。在正常大气条件下，卵、幼虫、幼虫、蛹和成虫的呼吸速率分别为0.0029、0.41、2.5 2、0.82和2.86个/虫h。以虫体重量计，同一时期的呼吸速率分别为0.14、4.83、1.98、0.64和2.58×10~2/mg·h。在低氧水平下，卵、幼虫和蛹的呼吸速率与低氧水平成正比。成虫呼吸强度在3%和5%O2水平下均较高，接近正常大气水平，分别为2.56和2.85×CO2/虫·h。成虫在相同O-2水平下的呼吸商分别为1.5和1.02，在20~35℃温度范围内，随着温度和气体浓度的变化，成虫呼吸增加，分别为0.89~6.82和0.93~5.63×10~(-2)/虫·h。(C)2002爱思唯尔科学有限公司。保留所有权利。
Developmental stages of Rhyzopertha dominica were exposed to atmospheres containing 1%, 2%, 3%, 5%, 10% or 15% oxygen (O-2) in nitrogen at 30degreesC and 70% r.h. Respiration rates were determined with a gas chromatograph. The O-2 intake and carbon dioxide (CO2) output by insects were expressed in mul/insect h or mul/mg h. Respiration of eggs, young and old larvae, pupae, and adults at normal atmospheric air were at rates of 0.0029, 0.41, 2.52, 0.82, and 2.86 mul CO2/insect h, respectively. Respiration rates of the same stages in terms of insect weight were 0.14, 4.83, 1.98, 0.64 and, 2.58 mul CO2/mg h, respectively. At reduced O-2 levels respiration rates of eggs, larvae and pupae were proportional to the O-2 levels. Adult respiration rates were high at 3% and 5% 02 levels almost reaching that of normal atmospheric air, and were 2.56 and 2.85 mul CO2/insect h, respectively. In adults, respiration quotient values for the same O-2 levels were higher than at normal atmospheric O-2 and were 1.5 and 1.02, respectively.Respiration of adults in normal air between 20degreesC and 35degreesC increased with temperature and gas values varied between 0.89 and 6.82 mul CO2/insect h, respectively, or 0.93 and 5.63 mul O-2/insect h, respectively. (C) 2002 Elsevier Science Ltd. All rights reserved.