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首页> 外文期刊>The European Journal of Neuroscience >Partial unilateral lesions of the mushroom bodies affect olfactory learning in honeybees Apis mellifera L.
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Partial unilateral lesions of the mushroom bodies affect olfactory learning in honeybees Apis mellifera L.

机译：蘑菇体的部分单侧损伤影响蜜蜂Apis mellifera L的嗅觉学习。

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摘要

The mushroom bodies (MBs) are central structures in the insect brain that have been associated with olfactory learning and memory. Here we used hydroxyurea (HU) to treat honeybee larvae and induce partial MB ablations at the adult stage. We studied olfactory learning in honeybees with unilateral loss of the median calyces of their MBs and compared their ability to solve different forms of olfactory discrimination. When odorants were delivered in a side-specific manner, ablated bees could not solve either discrimination of the unambiguous problem (Paradigm 1: A+, B- on one antenna, C+, D- on the other; A+B-/C+D-) whereas they could solve at least one of both discriminations of the ambiguous problem (Paradigm 2: A+B-/A-B+), namely that proposed to their intact brain side. Non-ablated bees could learn side-specific discriminations on both brain sides. When odorants were delivered simultaneously to both antennae (Paradigm 3: A+B-C+D-), HU-ablated bees learned slower than HU-normal bees. Thus, in all three paradigms, the unilateral loss of a median calyx affected olfactory learning. We propose that the MBs are required for solving elemental olfactory tasks whose complexity is increased by the number of stimuli involved and that MB ablations could have an effect on the inhibition of information exchange between brain hemispheres.
机译：蘑菇体（MBs）是昆虫大脑中与嗅觉学习和记忆有关的中心结构。在这里，我们使用羟基脲（HU）来治疗蜜蜂的幼虫并在成年阶段诱导部分MB消融。我们研究了蜜蜂的嗅觉学习，这些蜜蜂单方面损失了其MB的中位花萼，并比较了它们解决不同形式的嗅觉歧视的能力。当以特定于侧面的方式输送加味剂时，消融的蜜蜂无法解决任何一个明确的问题（范例1：天线上的A +，B-，另一天线上的C +，D-; A + B- / C + D -），而他们可以解决对模棱两可的问题（范例2：A + B- / A-B +）的至少两种辨别，即向他们完整的大脑侧提出的辨别。未消融的蜜蜂可以在大脑的两侧学习特定于侧面的辨别力。当将气味剂同时输送到两个触角时（Paradigm 3：A + B-C + D-），HU消融的蜜蜂学习速度比HU正常的蜜蜂慢。因此，在所有这三种范式中，花萼的单侧损失影响嗅觉学习。我们建议MBs是解决基本嗅觉任务所必需的，其嗅觉任务的复杂性会因所涉及的刺激次数而增加，并且MB消融可能会抑制大脑半球之间的信息交换。

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