Quantifying inter-population variability in yellow perch sexual size dimorphism

作者: Christopher S. Uphoff , Casey W. Schoenebeck

DOI: 10.1080/02705060.2012.684893

关键词:

摘要: Size-selective angler behavior or the implementation of length-based regulations may have implications in harvest-oriented yellow perch (Perca flavescens) fisheries where populations display sexual size dimorphism (SSD), even though occurrence SSD remains poorly documented. Predicted and observed mean lengths-at-age were used to describe from four states one Canadian province. In addition, abiotic biotic variables predict populations. significantly greater for female after age 3 indicating female-biased (higher growth rates maximum attainable lengths) occurred upon maturity. Using lengths-at-age, 85% study had at least 1 year class females larger than males. Female-biased was present almost two-thirds individual length-at-age y...

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