Status of rainbow smelt in U.S. waters of Lake Ontario, 2011
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Abstract
Rainbow smelt Osmerus mordax are the second most abundant pelagic prey fish in Lake Ontario. The abundance and weight indices for Lake Ontario age-1 and older rainbow smelt declined in 2011 and represented a 64% and 54% decrease respectively from 2010 levels. Length frequency-based age analysis indicated that age-1 rainbow smelt constituted 44% of the estimated population however age 1 abundance was 72% lower than age 1 abundance in 2010 and was 50% lower than the 10 year average age 1 abundance. Proportionally, large rainbow smelt (≥150 mm), were more common in 2011, making up approximately 7% of the population, substantially higher than the 10 year average of 2%. Based on the most recent time series data, rainbow smelt abundance peaks appear to follow a 4-5 year cycle.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Unnumbered Series |
| Title | Status of rainbow smelt in U.S. waters of Lake Ontario, 2011 |
| DOI | 10.3133/70047608 |
| Year Published | 2012 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | Great Lakes Science Center |
| Description | 3 p. |
| Larger Work Type | Report |
| Larger Work Subtype | USGS Unnumbered Series |
| Larger Work Title | Status of important prey fishes in the U.S. Waters of Lake Ontario, 2011 |
| First page | 9 |
| Last page | 11 |
| Country | United States |
| State | New York |
| Other Geospatial | Lake Ontario |
| Google Analytic Metrics | Metrics page |