Negative effect of turbidity on prey capture for both visual and non-visual aquatic predators

1. Turbidity plays an important role in aquatic predator-prey interactions. Increases in turbidity are expected to reduce prey capture rates, especially for visually oriented predators. However, there is also evidence indicating that turbidity may have little or no effect on predation rates. 2. Here, we conducted a systematic review and meta-analysis of the relationship between turbidity and capture rate. We explored possible sources of heterogeneity in the effect sizes (capture strategy, predator’s body size, relative eye size and turbidity range in the experiments) while controlling for the dependence among effects sizes and phylogenetic relationships among predator species. 3. We found a consistent negative effect of turbidity on prey capture and that turbidity range (manipulated in the experiments) was the main factor accounting for between-study variation in effect sizes. Also, capture rates of both visually and non-visually oriented predators decreased with an increase in turbidit...

1. 浊度（Turbidity）在水生捕食者-猎物相互作用中发挥关键作用。学界普遍认为，浊度升高会降低猎物捕获率，尤其对视觉导向型捕食者而言。但也有研究证据显示，浊度对捕食率可能几乎无影响或影响微乎其微。
2. 本研究针对浊度与猎物捕获率之间的关联开展了系统性综述与元分析（meta-analysis）。我们在控制效应量间的相关性以及捕食者物种间系统发育关系的同时，探究了效应量异质性的潜在来源，包括捕获策略、捕食者体型、相对眼大小以及实验中的浊度设置范围。
3. 研究结果显示，浊度对猎物捕获率存在一致的负向影响，且实验中操纵的浊度范围是导致不同研究间效应量差异的主要因素。此外，视觉导向型与非视觉导向型捕食者的猎物捕获率均随浊度升高而降低……