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Habitat Use of Juvenile Pallid Sturgeon and Shovelnose Sturgeon with Implications for Water‐Level Management in a Downstream Reservoir
- Source :
- North American Journal of Fisheries Management. 28:832-843
- Publication Year :
- 2008
- Publisher :
- Wiley, 2008.
-
Abstract
- Natural recruitment of pallid sturgeon Scaphirhynchus albus has not been observed in the Missouri River above Fort Peck Reservoir, Montana, for at least 20 years. To augment the population, age-1 hatchery-reared juvenile pallid sturgeon were released in 1998. The objective of this study was to evaluate the habitat use of these fish and compare it with that of indigenous shovelnose sturgeon S. platorynchus. Twenty-nine juvenile pallid sturgeon and 21 indigenous shovelnose sturgeon were implanted with radio transmitters in 2003 and 2004. The two species showed no differences in habitat use in terms of mean depth, cross-sectional relative depth, longitudinal relative depth, column velocity, bottom velocity, and channel width. However, there were seasonal differences within both species for cross-sectional relative depth, column velocity, and channel width. Both shovelnose sturgeon and juvenile pallid sturgeon were primarily associated with silt and sand substrate. However, shovelnose sturgeon were a...
- Subjects :
- education.field_of_study
Ecology
Population
Management, Monitoring, Policy and Law
Aquatic Science
Biology
biology.organism_classification
Substrate (marine biology)
Water level
Fishery
Sturgeon
Habitat
Relative depth
Juvenile
education
Ecology, Evolution, Behavior and Systematics
Scaphirhynchus albus
Subjects
Details
- ISSN :
- 15488675 and 02755947
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- North American Journal of Fisheries Management
- Accession number :
- edsair.doi...........25c5ad9578dbdceda4a132dab00faf43