Exploring the Links Between Seasonal Variation and Spider Foraging
作者： Thomas Edward , Dantas Whitney
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摘要: OF THESIS EXPLORING THE LINKS BETWEEN SEASONAL VARIATION AND SPIDER FORAGING According to optimal foraging theory, generalist predators, such as spiders, are thought feed indiscriminately on prey according its availability, especially when food is scarce. In contrast, generalists can display selective feeding decisions under regimes of high abundance, but few studies have tracked changes in choice a seasonal basis open field conditions. Additionally, adaptations surviving winter been largely ignored the research behavior. To elucidate this, I monitored availability and collected common forest-dwelling wolf spiders for molecular gut-content analysis, parallel 18 months, assess temporal occurring spider preferences leaf litter prey. addition, determine if any physiological improvements resisting low temperature mortality were affecting foraging, also monthly track supercooling points. The results revealed that do exhibit throughout year, appear so way diversifies their diets. Also, despite temperatures putting them severe freezing risk, cold tolerance these remained unchanged winter, which suggests opportunity growth during this uncompetitive period paramount accumulating survivorship-increasing, mobility-decreasing, cryoprotectants.
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