Fish Community Changes in the St. Louis River Estuary, Lake Superior, 1989–1996: Is It Ruffe or Population Dynamics?
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Cited by (30)
The benthic fish assemblage of the soft-bottom community of the Duluth-Superior Harbor before and after round goby invasion (1989–2011)
2016, Journal of Great Lakes ResearchCitation Excerpt :This indicates that the round goby have dominated the hard substrate, extirpating most native fish, and that the soft sediment maybe providing refuge for the native fish population to persist. An earlier analysis (1989–1996) of the data examined the effect of Eurasian ruffe introduction on native species and concluded that variable recruitment, and associated density-dependent changes in mortality likely were responsible for density declines of native species (Bronte et al., 1998) independent of the Eurasian ruffe's appearance. However, the trawling was initiated several years after the discovery of the Eurasian ruffe and, as the first year of the survey (1989) had the highest number of native fish captured, the native population may have already been on the decline, which highlights the drawback of assessment after invasive species have become established.
The effect of freezing on the length and weight measurements of ruffe (Gymnocephalus cernuus)
2009, Fisheries ResearchCitation Excerpt :The ruffe (Gymnocephalus cernuus) is a percid native to Europe and Asia (Craig, 1987) that has been accidentally introduced into several large lakes around the world (Matthey, 1966; Pratt et al., 1992; Gunderson et al., 1998; Ogle, 1998; Winfield et al., 2002; Lorenzoni et al., 2007). In addition, ruffe are a major component of the fish community in many water bodies to which it is native (Duncan, 1990; Bronte et al., 1998; Winfield et al., 2007). Ruffe are often frozen en masse, thawed at a later time, and then measured and weighed in the laboratory.
Distribution, abundance, and range of the round goby, Apollina melanostoma, in the Duluth-Superior Harbor and St. Louis River estuary, 1998-2004
2008, Journal of Great Lakes ResearchActivity, aggression, and habitat use of ruffe (Gymnocephalus cernuus) and round goby (Apollonia melanostoma) under laboratory conditions
2007, Journal of Great Lakes ResearchUse of electric or bubble barriers to limit the movement of Eurasian ruffe (Gymnocephalus cernuus)
2006, Journal of Great Lakes ResearchDiet of larval ruffe (Gymnocephalus cernuus) in the St. Louis River Harbor, Lake Superior
2004, Journal of Great Lakes Research