Predatory behavior of the zebra spider, Salticus scenicus (Araneae: Salticidae)
نویسنده
چکیده
DILL, L. M. 1975. Predatory behavior of the zebra spider, Salticus scenicus (Araneae: Salticidae). Can. J. Zool. 53: 1284-1289. The zebra spider (Salticus scenicus), a small jumping spider, orients towards prey detected by its lateral eyes whenever the angle subtended by such prey exceeds 5.5". The velocity of the prey is not involved in the determination of reactive distance, but only moving objects elicit orientation. The probability that orientation is followed by stalking is a function of both prey size and velocity, but the effects of these parameters on reactive distance for stalking were not determined. The zebra spider's stalk velocity declines progressively as it nears its (stationary) prey, and the probable optimality of this behavioral tactic is discussed.
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