Phenotypic architecture of sociality and its associated genetic polymorphisms in zebrafish

Sociality is often seen as a single phenotypic trait, but it relies on motivational and cognitive components implemented by specific causal mechanisms. Hence, these components may have evolved independently, or may have been linked by phenotypic correlations driven by a shared selective pressure for increased social competence. Furthermore, these components may be domain-specific or of general domain across social and non-social contexts. Here we have characterized the phenotypic architecture of sociality in zebrafish, which has been increasingly used as a model organism in social neuroscience. For this purpose, we have behaviorally phenotyped zebrafish from different wild type lines in four tests: social tendency, social and non-social recognition, and open-field test. Our results indicate that: (1) sociality has two main components that are independent from each other (social tendency and social recognition), hence not supporting the occurrence of a sociality syndrome; (2) both social...

社会性常被视为单一表型性状，但其依赖于由特定因果机制所实现的动机与认知成分。因此，这些成分可能独立演化，也可能因共享的提升社会能力的选择压力所驱动的表型关联而相互联结。此外，这些成分可能具有领域特异性，或是在社会与非社会情境中具备领域一般性。本研究对斑马鱼（zebrafish）的社会性表型架构进行了表征，而斑马鱼作为模式生物在社会神经科学领域的应用正日益广泛。为此，我们针对来自不同野生品系的斑马鱼开展了四项行为表型分型实验：社会倾向、社会与非社会识别，以及旷场实验（open-field test）。研究结果表明：(1) 社会性存在两个彼此独立的核心成分（社会倾向与社会识别），因此不支持社会性综合征的存在；(2) 两项社会...