Cost-Benefit Balance of Dispersal and the Evolution of Conditional Dispersal Strategies in Spiders

摘要: Many spiders disperse by means of silk threads. Such silk-assisted dispersal is termed aerial and constitutes short-distance (rappelling) or long-distance strategies (ballooning). Obviously, this costly the eventual decision making determined information perceived from environment (context dependency) internal state (condition dependency). By an array laboratory experiments, we demonstrated adaptive adjustments behaviour in relation to habitat quality, population structure conditions during development. In contrast, poor body condition likely constrains dispersal. The strategy additionally influenced maternal effects.