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- W3214252143 abstract "Abstract The vertebrate brain displays enormous morphological variation and the quest to understand the evolutionary causes and consequences of this variation has spurred much research. The mosaic brain evolution hypothesis, stating that brain regions can evolve relatively independently, is an important idea in this research field. Here we provide experimental support for this hypothesis through an artificial selection experiment in the guppy ( Poecilia reticulata ). After four generations of selection on relative telencephalon volume (relative to brain size) in replicated up-selected, down-selected and control-lines, we found substantial changes in telencephalon size, but no changes in other regions. Comparisons revealed that up-selected lines had larger telencephalon while down-selected lines had smaller telencephalon than wild Trinidadian populations. No cost of increasing telencephalon size was detected in offspring production. Our results support that independent evolutionary changes in specific brain regions through mosaic brain evolution can be important facilitators of cognitive evolution." @default.
- W3214252143 created "2021-11-22" @default.
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- W3214252143 date "2021-04-01" @default.
- W3214252143 modified "2023-09-27" @default.
- W3214252143 title "Rapid mosaic brain evolution under artificial selection for relative telencephalon size in the guppy (<i>Poecilia reticulata</i>)" @default.
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- W3214252143 doi "https://doi.org/10.1101/2021.03.31.437806" @default.
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