The Mechanosensory Lateral Line System Mediates Activation of Socially-Relevant Brain Regions during Territorial Interactions

摘要: Animals use multiple senses during social interactions and must integrate this information in the brain to make context-dependent behavioral decisions. For fishes, largest group of vertebrates, mechanosensory lateral line system provides crucial hydrodynamic for survival behaviors, but little is known about its function communication. Our previous work using African cichlid fish, Astatotilapia burtoni, provided first empirical evidence that fish their detect water movements from conspecifics mutual assessment choices. It unknown, however, where socially-relevant processed elicit adaptive responses. To examine time any species which regions receive contextual information, we quantified expression immediate early gene cfos as a proxy neural activation sensory nuclei line-intact -ablated following territorial interactions. situ hybridization results indicate addition processing regions, ATn (ventromedial hypothalamus homolog), Dl (putative hippocampus Vs medial extended amygdala homolog). In addition, identified functional network within conserved decision-making whose co-activity corresponds with choice. Lateral –ablated fight winners had different patterns these networks identity could be determined solely by patterns, indicating importance mechanoreception network. These data show relevant centers mediate choices such whether or not engage fight. our knowledge, also subpallial nucleus receiving input, providing important elucidating homologies circuits across vertebrates. novel highlight considering multimodal input mediating context-appropriate behaviors will provide broad insights on evolution all taxa.