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

Burdick, Summer M.; Rasmussen, Josh

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.

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USGS Numbered Series

ProdID:

70039647

Citation Author:

Burdick, Summer M.; Rasmussen, Josh

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Western Fisheries Research Center

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English

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iv, 18 p.; ill.; map

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

Citation Publisher:

U.S. Geological Survey

Citation Series:

Open-File Report

Citation Series Code:

OFR

Citation Series Number:

2012-1180

Citation Search Results Text:

Preliminary juvenile Lost River and shortnose sucker investigations in Clear Lake, California--2011 pilot study summary; 2012; OFR; 2012-1180; Burdick, Summer M.; Rasmussen, Josh

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2012

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citation/reference

Text:

Preliminary juvenile Lost River and shortnose sucker investigations in Clear Lake, California--2011 pilot study summary; 2012; OFR; 2012-1180; Burdick, Summer M.; Rasmussen, Josh