![]() Round goby also forage efficiently in structured habitats that might otherwise serve as prey refugia (Gebauer et al 2019). This allows it to feed in complete darkness, giving it an advantage over other fish in the same habitat (Wisconsin Sea Grant 2008). The Round goby has a well-developed sensory system that enhances its ability to detect water movement. Phenotypic plasticity has also been shown in Round goby to maintain or regain homeostasis after rapid temperature changes, thus increasing its invasion success (Wellband and Heath 2017). Round goby has been shown to exhibit phenotypic plasticity in some life history characteristics, such as reproductive traits like number and size of mature oocytes, and this plasticity has been suggested to enhance establishment success at invasion fronts (Hôrková and Kovác 2015). They can spawn every 20 days from April to September and have a maximum lifespan of about 4 years. ![]() (2015) examined the influence of various habitat characteristics (e.g., wetlands vs open water, productivity, zooplankton and fish community diversity) on the abundance of Round goby at several sites in Lakes Michigan and Huron, finding that catch per unit effort was generally related to biological productivity but the direction and strength of the relationship varied across sites.įemale round gobies mature at 1-2 years with clutch (100-4000 eggs) related to body size. ![]() Streams with low concentrations of dissolved ions such as calcium appear to resist invasion (Kornis et al 2013). It can tolerate low oxygen concentrations and poor water quality. This species has broad salinity tolerance surviving brackish conditions to 20ppt. Round goby has a broad temperature tolerance but energetic optimum temperature of about 26° C and appears to avoid colder streams (Kornis and Vander Zanden 2010). Most reports are in coastal margins with high thermal energy, low exposure and high tributary influence. Highest densities are reported between 1 and 50m depths, but the species has been reported out to 180m and is migrating offshore seasonally. † Populations may not be currently present.Įcology: The Round goby perches on rocks and other substrates in shallow areas, yet it has also been reported to flourish in a variety of habitat types including open sandy areas and in abundant aquatic macrophytes (Jude and DeBoe 1996 Clapp et al. Lawrence River Rondout Salmon-Sandy Schoharie SenecaĪshtabula-Chagrin Black-Rocky Cedar-Portage Chautauqua-Conneaut Cuyahoga Grand Lake Erie Lower Maumee Ottawa-Stony Sanduskyīeartrap-Nemadji Door-Kewaunee Duck-Pensaukee Lake Michigan Lake Superior Lower Fox Manitowoc-Sheboygan Menominee Milwaukee Oconto Peshtigo Pike-Root St. Lawrence River Hudson-Hoosic Hudson-Wappinger Irondequoit-Ninemile Lake Erie Lake Ontario Lower Genesee Middle Hudson Mohawk Niagara River Oak Orchard-Twelvemile Oneida Oswego Owego-Wappasening Raisin River-St. Louisīlack Buffalo-Eighteenmile Cattaraugus Chaumont-Perch Chautauqua-Conneaut Headwaters St. Marys Tacoosh-Whitefish Thunder Bay Tittabawassee Upper Grandīaptism-Brule Beartrap-Nemadji Beaver-Lester Lake Superior St. ![]() Clair Lake Superior Little Calumet-Galien Lone Lake-Ocqueoc Lower Grand Manistee Manistique River Menominee Millecoquins Lake-Brevoort River Muskegon Ottawa-Stony Pere Marquette-White Pigeon-Wiscoggin Pine Raisin Saginaw Shiawassee St. StateĬhicago Des Plaines Kankakee Lake Michigan Little Calumet-Galien Lower Illinois Lower Illinois-Lake Chautauqua Lower Illinois-Senachwine Lake Peruque-Piasa Pike-Root Upper IllinoisĪu Gres-Rifle Au Sable Betsie-Platte Betsy-Chocolay Birch-Willow Black-Macatawa Boardman-Charlevoix Carp-Pine Cass Cedar-Ford Cheboygan Clinton Detroit Fishdam-Sturgeon Flint Huron Kalamazoo Kawkawlin-Pine Lake Erie Lake Huron Lake Michigan Lake St. The list of references for all nonindigenous occurrences of Neogobius melanostomus are found here. Names and dates are hyperlinked to their relevant specimen records. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Interactive maps: Point Distribution Maps ![]()
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