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Status of rainbow smelt in the U.S. waters of Lake Ontario, 2011

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Abstract

Rainbow smelt <i>Osmerus mordax</i> 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 201l 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.

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Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Status of rainbow smelt in the U.S. waters of Lake Ontario, 2011
Year Published 2012
Language English
Publisher Great Lakes Science Center
Publisher location Cleveland, OH
Description 3 p.
Larger Work Type Book
Larger Work Title Status of Important Prey Fishes in the U.S. Waters of Lake Ontario, 2011
Country United States
Other Geospatial Lake Ontario
Online Only (Y/N) N
Additional Online Files (Y/N) N