Distribution and movement of domestic rainbow trout, Oncorhynchus mykiss, during pulsed flows in the South Fork American River, California

被引:13
|
作者
Cocherell, Sarah A. [1 ]
Jones, Gardner J. [2 ]
Miranda, Javier B. [2 ]
Cocherell, Dennis E. [1 ]
Cech, Joseph J., Jr. [1 ]
Thompson, Lisa C. [1 ]
Klimley, A. Peter [1 ]
机构
[1] Univ Calif Davis, Wildlife Fish & Conservat Biol Dept, Davis, CA 95616 USA
[2] Calif Dept Water Resources, Sacramento, CA 94236 USA
关键词
Distribution; Movement; Pulsed flows; Radio telemetry; Rainbow trout Oncorhynchus mykiss; SALMO-TRUTTA-L; STREAM CHANNEL EXPERIMENTS; RECENTLY EMERGED TROUT; S-SALAR L; BROWN TROUT; CUTTHROAT TROUT; DOWNSTREAM MOVEMENT; HABITAT USE; SEASONAL MOVEMENT; BULL TROUT;
D O I
10.1007/s10641-010-9701-2
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
We tracked the movements of ten small (SL = 25.5-31.0 cm) and ten large (SL = 32.0-38.5 cm) radio-tagged domestic rainbow trout (Oncorhynchus mykiss) in response to frequent pulsed releases of water in the South Fork American River (California) from July to October 2005. In week one all the small trout moved less than 1 km upstream or downstream of their release sites. Four small trout moved 1-3 km upstream or downstream of their release sites in the following 8 weeks. Seven out of ten large trout moved downstream after their release. In subsequent weeks most large trout showed smaller upstream and downstream movements, and were observed between 1 km upstream and 8 km downstream of their release sites. Our results suggest that domestic rainbow trout with SL > 25 cm are not forced downstream by daily pulsed flow increases from 5 to over 40 m(3)s(-1).
引用
收藏
页码:105 / 116
页数:12
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