What is the main purpose of the zig-zag stabilimentum woven by Argiope aurantia?
Answer
Creating an effective, high-visibility trap
The structure known as the stabilimentum, characterized by its zig-zag pattern, serves a practical function in the web construction of the Yellow Garden Spider rather than merely being ornamental. Its primary role is functional: to establish a highly visible barrier or trap that successfully intercepts flying insects. This increased visibility may either attract insects by mimicking a structure they might approach or serve as a highly effective snare that ensnares prey immediately upon impact, contributing directly to the spider's consistent food supply.
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