中文摘要：

对在自然条件下不同体重肩斑银鳞蛛Leucauge blanda和大腹园蛛Araneus ventricosus所织圆网的结构特征进行测量研究。结果表明：体重小于35·1mg的肩斑银鳞蛛所织圆网的捕丝长度、捕食面面积、捕丝间距和半径丝根数均与个体体重呈显著正相关,而体重大于35·1mg的个体中,这种关系并不显著,但其圆网的上、下部捕丝长度比与体重呈显著负相关,即圆网随个体的体重增加而表现出更强的不对称性;体重小于144·9mg的大腹园蛛所织圆网的捕丝长度和捕食面面积均与个体体重呈显著正相关,体重小于103·8mg的大腹园蛛所织圆网的半径丝根数与个体体重呈显著正相关,而大于这一体重分界值的个体中,这种关系同样不显著。大腹园蛛圆网的平均捕丝间距与体重未呈现出相关关系,体重大于85·4mg的个体中,其网的上、下部捕丝长度比与体重呈显著负相关。两种蜘蛛圆网结构特征的变化及圆网结构特征与个体体重关系变化的不同体重分界值,可能反映了它们在不同生境下不同生长阶段的捕食投入与捕食策略。

英文摘要：

The structural features of webs from different sized spiders of Leucauge blanda and Araneus ventricosus in the field conditions were examined.Results indicated that the capture thread length,capture spiral space,capture area and the number of the web radius were positively related to the weight of L.blanda under 35.1 mg.The ratio of capture thread length of upper to lower was negatively related the weight of L.blanda over 35.1 mg.The capture thread length,the capture spiral space and the capture area were positively related to the body weight of A.ventricosus under 144.9 mg.The numbers of the web radius were also positively related to the body weight of the spider under 103.8 mg.But there was no relationship between capture spiral space and spider weight.The ratio of capture thread length of upper to lower was negatively related the mass of A.ventricosus over 85.4 mg.The relationships between the features of web structure and the body weight of the spiders were the prey strategies under different habitat in different stages of growth.