Grasshopper mice attack crickets, stink beetles, and scorpions differently. To determine what aspects of the attack behavior represent adjustments to each prey's defense, attacks by inexperienced and experienced mice on prey capable or incapable of using its defenses were compared. Each defense caused different changes in the mouse's approach, seizure and orientation of bites. Learning was responsible for these changes and each of these adjustments specifically counteracted the prey's defenses.
Zusammenfassung
Es wird beschrieben, in welcher Weise die Sprungbeine der Hausgrille, die Stinkdrüse eines Käfers und der Stachel eines Skorpions das Beutefang‐Verhalten der Grashüpfermaus (Onychomys torridus) beeinflussen. Unterschiede im Verhalten unerfahrener und erfahrener Tiere deuten darauf hin, daß die Ansatzstellen für Ergreifen und Beißen der Beute gelernt werden. Spezifische Änderungen im Beutefang‐Verhalten machten die Verteidigung des jeweiligen Beutetieres weniger wirksam.
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