The effect of temperature on the respiration rate of meiofauna
The effect of temperature on the respiration rate of meiofauna
复制标题
温度对小型底栖动物呼吸速率的影响
作者：
R. Price;Richard M. Warwick
本文利用笛卡尔潜水员，对英国康沃尔郡林赫河口泥滩小型底栖的sabellid多毛类Manayunkia aestuarina、自由生活的线虫Sphaerolaimus hirsutus和桡足类桡足类Tachidius discipes的呼吸速率进行了研究。在野外通常经历的温度范围内，即5-20° C，大小补偿呼吸速率（Rc）与温度（T）（°C）的关系为：Manayunkia的Log 10 Rc =-0.635+0.0339T，Sphaerolaimus的Log 10 Rc =0.180+0.0069T，Tachidius的Log 10 Rc =-0.428+0.0337T，相当于Q10值分别为2.19、1.17和2.17。为了推导出Manayunkia的温度响应，首先建立了呼吸速率与体长的关系：Log 10 R =0.05+ 0.75Log10V，其中R =呼吸量（nl·O2·ind-1·h-1），V =体长（nl）。从这些有限的数据中，出现了二分法：Q10 2的物种显然以硅藻和细菌为食，其丰度存在很大的短期变异性，而Q10 1的物种显然依赖于更稳定的食物来源。
SummaryThe effect of temperature on respiration rate has been established, using Cartesian divers, for the meiofaunal sabellid polychaeteManayunkia aestuarina, the free-living nematodeSphaerolaimus hirsutus and the harpacticoid copepodTachidius discipes from a mudflat in the Lynher estuary, Cornwall, U.K. Over the temperature range normally experienced in the field, i.e. 5–20° C the size-compensated respiration rate (Rc) was related to the temperature (T) in °C by the equation Log10Rc=-0.635+0.0339T forManayunkia, Log10Rc=0.180+0.0069T forSphaerolaimus and Log10Rc=-0.428+0.0337T forTachidius, being equivalent toQ10 values of 2.19, 1.17 and 2.17 respectively. In order to derive the temperature response forManayunkia a relationship was first established between respiration rate and body size: Log10R=0.05+0.75 Log10V whereR=respiration in nl·O2·ind-1·h-1 andV=body volume in nl.TheQ10 values are compared with values for other species derived from the literature. From these limited data a dichotomy emerges: species with aQ10≏2 which apparently feed on diatoms and bacteria, the abundance of which are subject to large short term variability, and species withQ10≏1 apparently dependent on more stable food sources.