What observation about web structure variation links the function of the stabilimentum to habitat lighting conditions?
Answer
When Argiope webs are placed in shady areas, the stabilimentum often appears less dense or may even be absent.
The physical expression of the stabilimentum is demonstrably plastic, changing based on the immediate environment. Specifically, when *Argiope* spiders construct their webs in shady areas, the conspicuous silk decoration tends to be less dense or entirely absent. This variation suggests that the structural need for advertising presence or mitigating glare against a bright background is diminished in low-light conditions. Conversely, webs established in bright, sunny environments typically display the most elaborate and dense zigzag patterns, reinforcing the hypotheses related to visibility and light interaction.
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