Octopamine and serotonin have opposite effects on antipredator behavior in the orb-weaving spider, Larinioides cornutus.

摘要: In this study, we experimentally elevated levels of octopamine and serotonin in an orb-weaving spider, observed the effects on antipredator behavior thanatosis (death feigning), activity level, running speed. We found that significantly shortened duration thanatosis, its effect wore off over 24 h. also lengthened but case, persisted for Neither nor affected general or speed spiders. To our knowledge, is first study to directly explore role biogenic amines a specific Given spiders must be both aggressive toward prey, yet wary predators, believe system will outstanding model connections between behavioral ecology neurochemistry.