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Caste‐biased locomotor activities in isolated termites
Physiological Entomology ( IF 1.5 ) Pub Date : 2019-12-01 , DOI: 10.1111/phen.12315
Hiroyuki Shimoji 1 , Nobuaki Mizumoto 2 , Kohei Oguchi 3 , Shigeto Dobata 2
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Eusocial insects are characterized by a well‐developed division of labour among castes. Although the successful division of labour should stem from behavioural differentiation depending on caste identity, caste‐specific intrinsic behavioural characteristics might be masked by social interactions within colonies. The present study explores caste‐specific intrinsic locomotive activities of termites by quantifying them in isolation. We track individual movement trajectories of the damp‐wood termite Hodotermopsis sjostedti over 30 min and extract individual locomotion parameters. Multivariate statistical analyses reveal significant differences among castes: soldiers move more actively than workers and neotenic reproductives. The morphometric data of test individuals indicate that locomotor activities reflected caste identity more strongly compared with quantitative morphological variations among individuals. We find that the different locomotor activities of soldiers compared with those of neotenics and workers probably reflect their physiological differentiation. The present study provides a basis for a deeper understanding of the roles of individual locomotor activities in social behaviours.

中文翻译:

孤立白蚁的种姓偏向运动活动

真社会性昆虫的特点是种姓之间的分工很发达。尽管成功的分工应该源于基于种姓身份的行为分化,但种姓特定的内在行为特征可能会被殖民地内的社会互动所掩盖。本研究通过单独量化白蚁来探索白蚁特定于种姓的内在机车活动。我们在 30 分钟内跟踪湿木白蚁 Hodotermopsis sjostedti 的个体运动轨迹,并提取个体运动参数。多变量统计分析揭示了种姓之间的显着差异:士兵比工人和新生代更活跃。测试个体的形态测量数据表明,与个体之间的定量形态变化相比,运动活动更能反映种姓身份。我们发现士兵与新生儿和工人的不同运动活动可能反映了他们的生理分化。本研究为更深入地了解个体运动活动在社会行为中的作用提供了基础。
更新日期:2019-12-01
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