Evolutionary dynamics of mushroom body Kenyon cell types in hymenopteran brains from multifunctional type to functionally specialized types

• DOI: 10.1126/sciadv.add4201
• Publication Date: 2023-05-05T17:58:17Z
• Authors: Takayoshi Kuwabara; Hiroki Kohno; Masatsugu Hatakeyama; Takeo Kubo
• Keywords: Mushroom bodies; Sawfly; Eusociality; Cell type

Evolutionary dynamics of diversification brain neuronal cell types that have underlain behavioral evolution remain largely unknown. Here, we compared transcriptomes and functions Kenyon (KC) compose the mushroom bodies between honey bee sawfly, a primitive hymenopteran insect whose KCs likely ancestral properties. Transcriptome analyses show sawfly KC type shares some gene expression profile with each type, although unique profiles also been acquired in type. In addition, functional analysis two genes suggested learning memory were heterogeneously inherited among bee. Our findings strongly suggest Hymenoptera involved previously hypothesized processes for function: segregation divergence.