Modeling the Influence of Parr Predation by Walleyes and Brown Trout on the Long-Term Population Dynamics of Chinook Salmon in Lake Michigan: A Stage Matrix Approach
Modeling the Influence of Parr Predation by Walleyes and Brown Trout on the Long-Term Population Dynamics of Chinook Salmon in Lake Michigan: A Stage Matrix Approach
复制标题
模拟白眼鱼和褐鳟对帕尔捕食对密歇根湖奇努克鲑鱼长期种群动态的影响：阶段矩阵方法
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
D. Mason
中科院分区：
文献类型：
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作者：
D. Krueger;E. Rutherford;D. Mason
摘要个体发育过程中的捕食事件可能对鱼类种群的丰度和变异性产生长期的影响。我们使用了一个基于阶段的矩阵模型来评估大眼桑德玻璃体和褐鳟鱼萨尔莫trutta捕食奇努克鲑鱼Oncorhynchus tshawytscha帕尔的马斯科贡河股票和帕尔捕食的长期人口动态和招聘的奇努克鲑鱼在密歇根湖的相对影响。该模型预测了每个阶段（鱼苗、小鲑鱼和湖龄0 [新兵]到湖龄4）中奇努克鲑鱼个体的数量，并基于人口统计数据（例如，生存、生长和繁殖力）。Parr捕食的相对影响进行了比较，在鸡蛋阶段和Alewife Alosa pseudoharengus丰度（猎物湖阶段鲑鱼）的奇努克鲑鱼的繁殖力，招聘和人口增长的环境随机性的影响。为了模拟环境随机性和Alewife丰度的影响，我们v。
Abstract Predation events during ontogeny may have long-term consequences for fish population abundance and variability. We used a stage-based matrix model to evaluate Walleye Sander vitreus and Brown Trout Salmo trutta predation on Chinook Salmon Oncorhynchus tshawytscha parr of the Muskegon River stock and the relative influence of parr predation on the long-term population dynamics and recruitment of Chinook Salmon in Lake Michigan. The model predicted the number of Chinook Salmon individuals in each stage (fry, smolts, and lake age 0 [recruits] through lake age 4) and forecasted population trajectories based on demographic data (e.g., survival, growth, and fecundity). The relative influence of parr predation was compared with influences of environmental stochasticity in the egg stage and Alewife Alosa pseudoharengus abundance (prey for lake-stage salmon) on Chinook Salmon fecundity, recruitment, and population growth. To simulate environmental stochasticity and the influence of Alewife abundance, we v...