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Mechanism of individual recognition by learning/memory/experience and plasticity of microbrain

学习/记忆/经验与微脑可塑性的个体识别机制

基本信息

批准号：
11168230
负责人：
SASAKI Masami
金额：
$ 10.88万
依托单位：
Tamagawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas (A)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11168230/
关键词：
honeybee learning and memory plasticity mushroom body juvenile hormone Kenyon cells bumble bee circadian rhythm 経験,脳容積と学習スズメバチオオスズメバチ連合学習吻伸展反射

项目摘要

Effects of aging, juvenile hormone and social stimuli on the development and plasticity of learning capability of the honeybees were analyzed.・ The learning ability was acquired 5 to 9 days after emergence in workers, while it was accomplished 2 to 5 days after emergence in drone.・ Volumes of the subcompartments of mushroom body were compared between the bees experienced the various stimuli in the hive and the bees deprived of these stimuli in the confined condition by using semithin sections. There were significant quantitative differences in the antennal lobe and some subcompartments of the mushroom body.・ Juvenile hormone was found to have distinct promotive effect on the development of learning capability but the action was indirect.・ Timing of birth of the Kenyon cells in adult development was compared between worker and queen castes by the immunohistochemical method using BrdU incorporation. It was distinctly earlier in the queen caste in honeybees.・ Field studies were done in arctic Norway (latitude of 70N) to see the presence or absence of bumble bee foraging activities in the bright night of midnight sun, in relation to the phenomenon of continuous and restless activities found under the continuous light in the laboratory. Bees were foraging even in the midnight, and the threshold light intensity allowing the masking of circadian rhythmicity was lower than that in Japanese bumble bees.The phenomenon was proved to be the adaptation to extraordinary long day climate.

分析了衰老、幼年激素和社会刺激对蜜蜂学习能力发育和可塑性的影响。·工人在出现后5 - 9天获得学习能力，而无人机在出现后2 - 5天完成学习能力。通过使用半薄切片，比较了在蜂巢中经历各种刺激的蜜蜂和在受限条件下被剥夺这些刺激的蜜蜂之间蘑菇体亚室的体积。菌体的触角叶和部分小室在数量上存在显著差异。·幼激素对学习能力的发展有明显的促进作用，但作用是间接的。·利用BrdU掺入的免疫组织化学方法，比较工种和后种成体发育中Kenyon细胞的出生时间。在蜂王阶层中，这明显更早。在挪威北极（北纬70度）进行了实地研究，以观察大黄蜂在午夜阳光下的明亮夜晚是否存在觅食活动，以及在实验室连续光线下发现的持续和不稳定活动现象。即使在午夜，蜜蜂也在觅食，并且允许昼夜节律掩盖的阈值光强度低于日本大黄蜂。这一现象被证明是对超长白昼气候的适应。