Plasticity in foraging strategies may be an evolutionary response of predators to temporally or spatially variable resources. Although orb-weaver spiders use the web to capture a variety of prey types and sizes, plasticity in web design in response to such variation has rarely been documented. 2. The spider Parawixia bistriata spun two types of webs in response to temporally fluctuating prey availability. Small webs of fine mesh were spun daily at sunset and ceptured mainly small dipterans of the genus Dorhniphora. Large webs of wide mesh were spun only during diurnal termite swarms
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Cristina P. Sandoval (1994) studied this question.
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