Bombardi Cristiano, Salamanca Giulia, Tagliavia Claudio, Grandis Annamaria, Mille Fanny, De Iorio Maria Grazia, Minozzi Giulietta
Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra, 50, Ozzano dell'Emilia, 40064 Bologna, Italy.
Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900 Lodi, Italy.
Animals (Basel). 2022 Aug 10;12(16):2032. doi: 10.3390/ani12162032.
Visual information is processed in the optic lobes, which consist of three retinotopic neuropils. These are the lamina, the medulla and the lobula. Biogenic amines play a crucial role in the control of insect responsiveness, and serotonin is clearly related to aggressiveness in invertebrates. Previous studies suggest that serotonin modulates aggression-related behaviours, possibly via alterations in optic lobe activity. The aim of this investigation was to immunohistochemically localize the distribution of serotonin transporter (SERT) in the optic lobe of moderate, docile and aggressive worker honeybees. SERT-immunoreactive fibres showed a wide distribution in the lamina, medulla and lobula; interestingly, the highest percentage of SERT immunoreactivity was observed across all the visual neuropils of the docile group. Although future research is needed to determine the relationship between the distribution of serotonin fibres in the honeybee brain and aggressive behaviours, our immunohistochemical study provides an anatomical basis supporting the role of serotonin in aggressive behaviour in the honeybee
视觉信息在视叶中进行处理，视叶由三个视网膜拓扑神经纤维网组成。它们分别是神经纤维层、髓质和小叶。生物胺在控制昆虫反应性方面起着关键作用，血清素显然与无脊椎动物的攻击性有关。先前的研究表明，血清素可能通过改变视叶活动来调节与攻击相关的行为。本研究的目的是通过免疫组织化学方法定位血清素转运体（SERT）在中度、温顺和攻击性工蜂视叶中的分布。SERT免疫反应性纤维在神经纤维层、髓质和小叶中广泛分布；有趣的是，在温顺组的所有视觉神经纤维网中观察到SERT免疫反应性的百分比最高。尽管需要进一步的研究来确定蜜蜂大脑中血清素纤维分布与攻击行为之间的关系，但我们的免疫组织化学研究提供了解剖学依据，支持血清素在蜜蜂攻击行为中的作用。
