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Preliminary juvenile Lost River and shortnose sucker investigations in Clear Lake, California--2011 pilot study summary

Open-File Report 2012-1180

Prepared in cooperation with the U.S. Fish and Wildlife Service
By:
and

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Abstract

Poor recruitment appears to limit the recovery of Lost River and shortnose sucker populations in Clear Lake Reservoir, California, but the cause is unknown. Adult suckers migrate up Willow Creek and its tributaries to spawn in some years, but low flow in Willow Creek may inhibit spawning migrations in other years. It is unclear whether spawning is successful, larvae survive, or juveniles persist to adulthood. Environmental variables associated with successful spawning or young-of-year survival have not been identified and early life history for these populations is poorly understood. The U.S. Geological Survey in cooperation with the U.S. Fish and Wildlife Service and Ruby Pipeline L.L.C. Corporation (El Paso, Tex.) initiated a study in 2011 to better understand juvenile sucker life history in Clear Lake Reservoir, and to identify constraints in the early life history that may limit recruitment to the adult spawning populations. This is a report on the 2011 pilot study for this project.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Preliminary juvenile Lost River and shortnose sucker investigations in Clear Lake, California--2011 pilot study summary
Series title:
Open-File Report
Series number:
2012-1180
Year Published:
2012
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Western Fisheries Research Center
Description:
iv, 18 p.; ill.; map
First page:
i
Last page:
18
Country:
United States
State:
California
Other Geospatial:
Clear Lake
Online Only (Y/N):
Y
Additional Online Files(Y/N):
N