Cui-ui reproductive success from potential egg deposition to larval emigration

G. Gary Scoppettone; Peter H. Rissler

doi:10.3398/064.072.0303

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Cui-ui reproductive success from potential egg deposition to larval emigration

G. Gary Scoppettone·Peter H. Rissler

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Abstract

From 1985 to 2006, we tracked cui-ui, Chasmistes cujus, survival from potential egg deposition of migrating spawners to emigrating larvae. Tahoe sucker larvae emigrated to Pyramid Lake the same time as cui-ui larvae, but cui-ui was the predominant catostomid larvae we captured. Survival of cui-ui larvae ranged from 0.46% to 21.17%, declining significantly with decreased flow and increased number of spawners ( P < 0.01). Mean total length of emigrating larvae ranged from 11.5 to 12.6 mm and may have been affected by stream flow. Removal of impediments to upstream migrating cui-ui spawners, along with sufficient stream flows, may enhance early life-stage survival.

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Source-reported bounding extent: 39.17691709496078° to 40.271143686084194° latitude; -119.99542236328125° to -119.1741943359375° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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G. Gary Scoppettone, Peter H. Rissler. 2012. Cui-ui reproductive success from potential egg deposition to larval emigration. https://doi.org/10.3398/064.072.0303

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