Evaluation of temperament traits and its association with visual lateralisation in oval squid (Sepioteuthis lessoniana)

IF 1.3 4区生物学 Q4 BEHAVIORAL SCIENCES

Behavioural Processes Pub Date : 2025-05-01 DOI:10.1016/j.beproc.2025.105206

Yuma Sakurai , Yuzuru Ikeda

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Abstract

Many animals feature a left-right asymmetry of brain, morphological structure, and behaviour, namely, lateralisation, which exhibits individual variation within the same population and species. Such variation of lateralisation may be one of mechanisms underlying temperament traits, which is defined by consistent between-individual variation in behaviour across time and/or contexts. Coleoid cephalopods exhibits the individual variation of lateralisation and temperament traits, but it is unrevealed whether there are associations between them. This study investigated whether visual lateralization is associated with temperament traits in oval squid Sepioteuthis lessoniana that exhibits individual variation of visual lateralization. The visual lateralisation was tested for eye preference against prey, predator, and conspecifics. The temperament traits were tested for activity, aggressiveness, exploration-avoidance, shyness-boldness, and sociability. Although activity, aggressiveness, exploration-avoidance, and shyness-boldness showed between-individual consistency, sociability did not show this trend. Moreover, there was not association among temperament traits, suggesting that these traits are independent. The direction of visual lateralisation (left or right) against prey, predator, and conspecifics was positively associated with aggressiveness, exploration-avoidance, and shyness-boldness. The strength of visual lateralisation (stronger or weaker) against prey was positively associated with aggressiveness. We discuss what those associations play a role in oval squid.

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卵形鱿鱼的气质特征及其与视觉偏侧化的关系

许多动物的大脑、形态结构和行为具有左右不对称，即偏侧化，这在同一种群和物种中表现出个体差异。这种偏侧化的变化可能是气质特征的潜在机制之一，气质特征是由个体之间在时间和/或环境中的一致行为差异来定义的。Coleoid头足类动物在侧化和气质特征上表现出个体差异，但它们之间是否存在关联尚不清楚。本研究探讨了视觉偏侧化是否与表现出视觉偏侧化个体差异的卵形鱿鱼的气质特征相关。视觉侧化测试了对猎物、捕食者和同种动物的眼睛偏好。性情特征被测试为活跃，侵略性，探索-回避，害羞-大胆和社交能力。尽管主动性、攻击性、探索-回避和害羞-大胆表现出个体之间的一致性，但社交能力却没有表现出这种趋势。此外，气质特征之间没有关联，表明这些特质是独立的。对猎物、捕食者和同种动物的视觉侧化方向（左或右）与攻击性、探索-回避和害羞-大胆呈正相关。对猎物的视觉侧化（或强或弱）强度与攻击性呈正相关。我们讨论了这些关联在椭圆形鱿鱼中发挥的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Behavioural Processes 生物-动物学

CiteScore

2.70

自引率

7.70%

发文量

144

审稿时长

4-8 weeks

期刊介绍： Behavioural Processes is dedicated to the publication of high-quality original research on animal behaviour from any theoretical perspective. It welcomes contributions that consider animal behaviour from behavioural analytic, cognitive, ethological, ecological and evolutionary points of view. This list is not intended to be exhaustive, and papers that integrate theory and methodology across disciplines are particularly welcome.