Romano Donato, Canale Angelo, Benelli Giovanni
Insect Behaviour Group, Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy.
Insect Behaviour Group, Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy.
Behav Processes. 2015 Apr;113:159-62. doi: 10.1016/j.beproc.2015.02.004. Epub 2015 Feb 7.
Lateralisation (i.e. left-right asymmetries in brain and behaviour) of aggressive traits has been deeply studied in a number of vertebrates, while evidence for invertebrates is scarce. We investigated lateralisation of boxing behaviour in the blowfly Calliphora vomitoria (Diptera: Calliphoridae), where males fight for non-resource based spaces. We found a population-level lateralisation of aggressive displays: three repeated testing phases confirmed the preferential use of right legs over left ones. Duration of contests and number of boxing acts per fighting event were not different between males using left and right legs. The use of right legs for boxing acts lead to higher fighting success over males using left legs. Lateralised aggressive displays at population-level may be connected to the prolonged social interactions occurring among males searching for food and mates.
攻击性行为特征的偏侧化（即大脑和行为中的左右不对称性）已在许多脊椎动物中得到深入研究，而关于无脊椎动物的证据却很少。我们研究了丽蝇（双翅目：丽蝇科）的拳击行为偏侧化，在这种昆虫中，雄性会争夺非资源性空间。我们发现了攻击行为在种群水平上的偏侧化：三个重复的测试阶段证实，雄性更倾向于使用右腿而非左腿。使用左腿和右腿的雄性之间，争斗持续时间和每次战斗事件中的拳击动作数量并无差异。使用右腿进行拳击动作的雄性比使用左腿的雄性具有更高的战斗成功率。种群水平上的偏侧化攻击行为可能与雄性在寻找食物和配偶时发生的长期社会互动有关。
