Metabolic drivers of growth and survival in salmonids

该项目将调查环境、生理和行为在决定鲑鱼和鳟鱼的生活史选择中的作用。每条鱼将使用无源综合应答器进行标记，并使用英格兰、苏格兰、爱尔兰、法国、挪威和冰岛河流上已建立的跟踪站在其生命周期的关键阶段进行跟踪。将使用野外呼吸计测量每条鱼的幼鱼代谢率。生长速度将通过对鱼鳞环的图像分析来估计。短期和长期饮食将通过胃内容物显微镜和稳定同位素分析进行量化。资源可用性将通过每条河流中大型无脊椎动物和藻类的分类鉴定和生物量估计来表征。

This project will investigate the role of environment, physiology, and behaviour in determining life history choices in salmon and trout. Individual fish will be tagged using passive integrated transponders, and tracked throughout key stages of their life-cycle using established tracking stations on rivers in England, Scotland, Ireland, France, Norway, Iceland. Juvenile metabolic rate will be measured for each fish using field respirometry. Growth rate will be estimated by image analysis of annuli from fish scales. Short- and long-term diets will be quantified through microscopy of stomach contents and stable isotope analysis. Resource availability will be characterised through taxonomic identification and biomass estimates of macroinvertebrates and algae in each river.