Brain composition and scaling in social bee species differing in body size
Brain composition and scaling in social bee species differing in body size
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DOI：
10.1007/s13592-019-00685-w
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发表时间：
2019-12-01
期刊：
影响因子：
2.4
通讯作者：
Gronenberg, Wulfila
中科院分区：
文献类型：
--
作者：
Gowda, Vishwas;Gronenberg, Wulfila
我们比较了四种蜜蜂和一种熊蜂，它们具有相似的行为和生态要求，但体型差异很大。蜜蜂显示出与脊椎动物相似的异速生长脑-体尺寸关系和标度指数。与三种亚洲蜜蜂相比，欧洲蜜蜂的大脑比预期的更大。总的来说，不同物种的大脑表现出适度的区域差异，有两个明显的差异：A。背叶有一个扩大的视觉板，可能是对黄昏视觉的一种适应。第二，大黄蜂的蘑菇体比蜜蜂大，包含更多的内在神经元。虽然这些发现可能表明大黄蜂中存在更高级的感觉关联，但在没有对蜜蜂物种进行定量和全面的行为比较的情况下，目前还不可能测试这一概念。
We compare four honeybee and one bumblebee species with similar behaviors and ecological requirements but large differences in body size. The bees show allometric brain-body size relationships and scaling exponents similar to those found in vertebrates. Compared with three Asian honeybee species, the European honeybee Apis mellifera feature larger brains than expected for their body mass. Overall, the brains show moderate regional variation across species with two pronounced differences: A. dorsata have an enlarged visual lamina, possibly an adaptation for crepuscular vision. Second, the mushroom bodies are larger and comprise more intrinsic neurons in bumblebees than in honeybees. While these findings might suggest more advanced sensory associations in bumblebees, it is currently not possible to test this notion in the absence of quantitative and comprehensive behavioral comparisons across bee species.