期刊名称：Journal of FisheriesSciences.com / Su ÜrünleriBilimeri.com
印刷版ISSN：1307-234X
出版年度：2020
卷号：14
期号：4
页码：1-10
语种：English
出版社：Istanbul University
摘要：Landlocked Chinook salmon (Oncorhynchus tshawytscha) are a popular sport fish in Missouri River,USA, reservoirs. These fisheries are maintained through stocking, but few studies have examinedspecific factors at the time of stocking that may influence post-stocking survival of Chinook salmon.In this study, we used an information theoretic approach to evaluate the ability of candidate models toexplain variability in the return of stocked Chinook salmon to a spawning station in Lake Oahe, a largeMissouri River reservoir in central South Dakota. The best candidate models to explain adult Chinooksalmon returns included the lake elevation in May and, to a lesser extent, the number of Chinook salmonstocked. Surprisingly, recruitment of Chinook salmon exhibited an inverse relationship to lake elevation.Models that included measures of predator and prey abundance showed little support. Thus, it appearsthat Lake Oahe??s fish assemblage at the time of stocking plays less of role in the return of Chinooksalmon to the spawning stock compared to the lake characteristics at the time of stocking.
关键词：Lake Oahe; Missouri River; Oncorhynchus tshawytscha; smolt stocking; South Dakota
