Strausfeld Nicholas, Reisenman Carolina E
ARL Division of Neurobiology and Center for Insect Science, University of Arizona, Tucson, Arizona 85721, USA.
Ann N Y Acad Sci. 2009 Jul;1170:487-96. doi: 10.1111/j.1749-6632.2009.04020.x.
Specialized olfactory lobe glomeruli relating to sexual or caste differences have been observed in at least five orders of insects, suggesting an early appearance of this trait in insect evolution. Dimorphism is not limited to nocturnal species, but occurs even in insects that are known to use vision for courtship. Other than a single description, there is no evidence for similar structures occurring in the Crustacea, suggesting that the evolution of dimorphic olfactory systems may typify terrestrial arthropods.
在至少五个昆虫目中都观察到了与性别或等级差异相关的特化嗅觉叶小球，这表明该特征在昆虫进化过程中出现得较早。二态性并不局限于夜行性物种，甚至在已知利用视觉进行求偶的昆虫中也会出现。除了一项单一描述外，没有证据表明甲壳纲动物中存在类似结构，这表明二态性嗅觉系统的进化可能是陆生节肢动物的典型特征。
