ENERGY COSTS OF PREDATION STRATEGY OF WEB-SPINNING SPIDER LEPTHYPHANTES-ZIMMERMANNI-BERTKAU-(LINYPHIIDAE)
ENERGY COSTS OF PREDATION STRATEGY OF WEB-SPINNING SPIDER LEPTHYPHANTES-ZIMMERMANNI-BERTKAU-(LINYPHIIDAE)
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DOI：
10.1007/bf00345989
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发表时间：
1977-01-01
期刊：
影响因子：
2.7
通讯作者：
FORD, MJ
中科院分区：
文献类型：
--
作者：
FORD, MJ
在实验室对结网蜘蛛L.zimermanni的捕食策略的能量成本进行了研究。在S蜘蛛自然栖息地的山毛榉林地枯枝落叶层中，通过在不同温度下逐月运行的吉尔森呼吸仪估计了与该策略的固定方面相关的标准呼吸成本。呼吸频率与体重呈指数相关，平均值为0.7398。呼吸频率Q10在5-10度之间为2.41。C和1.97之间的10-15度。C.生产一张网的能源成本包括与织网所涉及的运动活动相关的活跃呼吸成本，以及用于网制造的蚕丝的能值。前者的评估方法是允许蜘蛛在呼吸仪中结网，减去计算出的同等重量蜘蛛的标准呼吸能量成本，然后乘以蜘蛛网大小的修正系数。在实验室建立了蜘蛛重量与产网面积的关系。对于一只成年蜘蛛(4毫克)来说，在724.46摄氏度(10-3摄氏度)的温度下，结网的呼吸成本实际上是恒定的。用弹式量热计估算了蜘蛛丝的能量值为17435J·g-1。单丝S网的含能为1.16J，在所有温度下生产网的能量成本为1.88J。
The energy costs of the predation strategy of the web-spinning spider L. zimmermanni were investigated in the laboratory. The standard respiratory costs associated with the stationary aspect of the strategy were estimated by a Gilson respirometer run at the different temperatures prevailing month by month in the beech woodland litter layer which comprises the spider''s natural habitat. Respiration rate is related to weight by an exponent with a mean value of 0.7398. The Q10 of respiration rate is 2.41 between 5-10.degree. C and 1.97 between 10-15.degree. C. The energy costs of producing a web comprise the active respiratory costs associated with the locomotory activity involved in spinning a web together with the energy value of the silk used in the web manufacture. The former were evaluated by allowing a spider to spin a web in a respirometer, subtracting the calculated standard respiratory energy costs for a spider of equivalent weight and multiplying by a correction factor for web size. The relationship between spider weight and area of web produced was established in the laboratory. The respiratory cost of spinning a web is effectively constant with temperature at 724.46.cntdot.10-3 J for an adult (4 mg) spider. The energy value of spider silk was estimated by a bomb calorimeter and is 17,435 J g-1. The energy content of the silk of a single adult''s web is 1.16 J, giving energy cost of web production of 1.88 J at all temperatures.