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Comparative brain expression analysis of scouting behaviors across contexts

ABSTRACT: Individual differences in behaviour are often consistent across time and contexts, but it is not clear if such consistency is reflected at the molecular level. We explored this issue by studying scouting in honey bees in two different behavioural and ecological contexts: finding new sources of floral food resources and finding a new nest site. Brain gene expression profiles in food-source and nest-site scouts showed a mixture of similarities and differences. Class prediction and 'leave-one-out' cross-validation analyses revealed that a bees role as a scout in either context could be predicted with 92.5% success using 89 genes at minimum. We also found that genes related to four neurotransmitter systems were part of a shared brain molecular signature in both types of scouts, but the two types of scouts were more similar for genes related to glutamate and GABA and more divergent for genes related to monoamines and acetylcholine signaling. These results indicate that consistent behavioural tendencies across different ecological contexts involve a mixture of similarities and differences in brain gene expression.

ORGANISM(S): Apis mellifera

SUBMITTER: Amy Cash Ahmed

PROVIDER: E-MTAB-2918 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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