Density and habitat use by the round goby (Apollonia melanostoma) in the Bay of Quinte, Lake Ontario

Low dissolved ions may limit secondary invasion of inland waters by exotic round gobies and dreissenid mussels in North America

“…Compared to studies that also used benthic video measurements to quantify mainly adult gobies, our range is generally higher than those from 2002 in western Lake Erie (0.80-7.76 m -2 ; Johnson et al 2005) and from 2005 for the Bay of Quinte in northeastern Lake Ontario (0.14-3.88 m -2 ; Taraborelli et al 2009). Earlier studies, using traditional census techniques (e.g.…”

“…Filming was repeated at 5-6 haphazardly chosen sites near our dreissenid collection areas. Earlier attempts to film gobies while moving along a bottom transect (see Johnson et al 2005;Lederer et al 2006;Taraborelli et al 2009) were problematic in that the process normally scared fish away from the filmed area and did not produce images where we were able to see gobies clearly enough for quantification. During placement of our mounted camera, some gobies directly under the tripod (area not filmed) were disturbed and moved away.…”

Round goby (Neogobius melanostomus) population structure, biomass, prey consumption and mortality from predation in the Bay of Quinte, Lake Ontario

“…Transects were 50 m in length, and taken in 123 pre-determined locations (60 in the upper bay and 63 in the lower bay). Transect locations were randomly selected within three depth zones (1.5-3 m, 3-5 m and 5-7 m; Taraborelli et al, 2009). Data from these transects were used in conjunction with length-at-age data from the monthly collections of round gobies to estimate the abundance by age-class.…”

Diet composition and consumption rate in round goby (Neogobius melanostomus) in its expansion phase in the Trent River, Ontario

“…Theoretically, the edges of the goby's range should contain fewer individuals, whereas at the center of its range where the species has been established for the longest period of time, the population should have a higher density. Such differences in round goby density have been demonstrated along the shoreline of Green Bay (Lake Michigan), and in the Bay of Quinte (Lake Ontario) between early and lateroccupied sites (Lederer et al 2008;Taraborelli et al 2009). …”