Home – Home – Jornals – Contemporary Problems of Ecology 2004 number 1

The purpose of the work was investigation of the effect of motor transport on the structure of catching nets structure of spiders L. patagiatus (Singa hamata Cl). The measurement was carried on the nets of mature females according to the technique of standard nets. The quantitative parameters describing the structure of individual nets were processed by statistical methods.
As a result of research, it was established that the average statistical characteristics of L. patagiatus catching nets in the experimental region were reliably different from those of the control. The correlation dependence between the parameters of structure of catching nets was revealed. Comparative analysis showed that the number of correlation links in the experimental region is 2 times lower than that in control. The discovered changes characterize lower determinacy level for catching nets of L. patagiatus in experiment. Factor analysis allowed revealing decrease in total variance and structural rearrangements in each component of the catching nets in the experimental group of observation, which indicated substantial changes in the instinctive algorithm of behaviour during making catching nets near motor roads. It is established that a motor road has a multi-aspect effect on the algorithm of instinctive behaviour of the species under investigation.