Population, sex and body size: determinants of behavioural variations and behavioural correlations among wild zebrafish Danio rerio
Population, sex and body size: determinants of behavioural variations and behavioural correlations among wild zebrafish Danio rerio
复制标题
种群、性别和体型：野生斑马鱼行为变异和行为相关性的决定因素
DOI：
--
复制
发表时间：
2018
影响因子：
3.5
通讯作者：
A. Bhat
中科院分区：
文献类型：
--
作者：
Tamal Roy;A. Bhat
本研究(1)研究了种群间的差异，以及性别和体型对野生斑马鱼的胆度、活动和鱼群关联倾向的影响；(2)在控制性别和体型的情况下，检验了行为之间是否存在相关性。研究人员测试了四个自然种群的个体在新情况下的一般活动、对捕食者的检查次数以及在捕食者存在时与同一鱼群联系的倾向。结果表明，种群对果胆度的影响显著，高捕食生境的种群比低捕食生境的种群更果胆。在有捕食者的情况下，雄性比雌性更倾向于与同一鱼群联系。此外，只有在两个低捕食种群中，活动和胆度之间才存在负相关。在流水栖低捕食种群中，个体体型对活度-胆度关系有很强的影响。小鱼胆子更大，活动更少，而大鱼则更谨慎，更活跃。总体而言，结果表明，虽然种群水平的行为反应可能受到捕食压力的影响，但状态依赖因素可能决定种群内个体之间的行为相关性。
This study (1) investigated variation among populations and the effects of sex and body size on boldness, activity and shoal-association tendency among wild zebrafish, and (2) tested for existence of correlations between behaviours, controlling for sex and body size. Individuals across four natural populations were tested for general activity in a novel situation, number of predator inspections undertaken and tendency to associate with a conspecific shoal in the presence of predators. Results showed a significant effect of population on boldness with a population from high-predation habitat being bolder than populations from low-predation habitats. Males showed significantly higher tendencies than females to associate with a conspecific shoal in the presence of predators. Further, a negative relationship was found between activity and boldness only within two low-predation populations. Individual body size had a strong effect on the activity–boldness relationship within the low-predation population from flowing water habitat. Smaller fish were bolder and less active while larger fish were more cautious and active. Overall, the results indicated that while population-level behavioural responses might be shaped by predation pressure, state-dependent factors could determine behavioural correlations among individuals within populations.
DOI：
10.5351/csam.2015.22.6.665
发表时间：
2015-11
影响因子：
0.4
作者：
Kim S
通讯作者：
Kim S