The determination of maternal run time in juvenile Chinook salmon (Oncorhynchus tshawytscha) based on Sr/Ca and 87Sr/86Sr within otolith cores

Publication year: 2009
Source: Fisheries Research, Volume 95, Issues 2-3, 14 January 2009, Pages 373-378</br>
J.A., Miller , A.J.R., Kent</br>
Historically, Pacific salmon (Oncorhynchus spp.) returned to natal streams throughout much of the year and extant populations continue to display extensive variation in run time. The genetic and environmental mechanisms that regulate run time are not well-understood, and there are few objective criteria to determine an individual’s run time. Here, in order to develop an independent marker of run time, the relationship between maternal run time and otolith core strontium (Sr/Ca and 87Sr/86Sr) of progeny was examined. Chinook salmon (Oncorhynchus tshawytscha) juveniles from three rivers with fall- and spring-run hatchery populations were used to: (1) test the hypotheses that otolith...</br>

11th August 2010 12:14

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