Occurrence and Food Habits of the Round Goby in the Profundal Zone of Southwestern Lake Ontario

2007 ◽  
Vol 33 (1) ◽  
pp. 83-92 ◽  
Author(s):  
Maureen G. Walsh ◽  
Dawn E. Dittman ◽  
Robert O'Gorman
Keyword(s):  
Food Habits ◽  
Round Goby ◽  
Lake Ontario ◽  
Profundal Zone

Diet shift of double-crested cormorants in eastern Lake Ontario associated with the expansion of the invasive round goby

2010 ◽  
Vol 36 (2) ◽  
pp. 242-247 ◽  
Author(s):  
James H. Johnson ◽  
Robert M. Ross ◽  
Russell D. McCullough ◽  
Alastair Mathers
Keyword(s):  
Round Goby ◽  
Lake Ontario ◽  
Diet Shift

scholarly journals Feeding ecology and niche overlap of Lake Ontario offshore forage fish assessed with stable isotopes

2018 ◽  
Vol 75 (5) ◽  
pp. 759-771 ◽  
Author(s):  
James A. Mumby ◽  
Timothy B. Johnson ◽  
Thomas J. Stewart ◽  
Edmund A. Halfyard ◽  
Brian C. Weidel ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Fish Species ◽  
Round Goby ◽  
Lake Ontario ◽  
Niche Overlap ◽  
Neogobius Melanostomus ◽  
Forage Fish ◽  
Isotopic Niche ◽  
Ecosystem Structure ◽  
Rainbow Smelt

The forage fish communities of the Laurentian Great Lakes continue to experience changes that have altered ecosystem structure, yet little is known about how they partition resources. Seasonal, spatial, and body size variation in δ13C and δ15N was used to assess isotopic niche overlap and resource and habitat partitioning among the five common offshore Lake Ontario forage fish species (n = 2037; alewife (Alosa pseudoharengus), rainbow smelt (Osmerus mordax), round goby (Neogobius melanostomus), and deepwater (Myoxocephalus thompsonii) and slimy (Cottus cognatus) sculpins). Round goby had the largest isotopic niche (6.1‰2, standard ellipse area), followed by alewife (3.4‰2), while rainbow smelt, slimy sculpin, and deepwater sculpin had the smallest and similar niche size (1.7‰2–1.8‰2), with only the sculpin species showing significant isotopic niche overlap (>63%). Stable isotopes in alewife, round goby, and rainbow smelt varied with location, season, and size, but did not vary in the sculpin species. Lake Ontario forage fish species have partitioned food and habitat resources, and non-native alewife and round goby have the largest isotopic niche, suggestive of a boarder ecological niche, and may contribute to their current high abundance.

Food habits and dietary overlap of perlid stoneflies (Plecoptera) in a tributary of Lake Ontario

1981 ◽  
Vol 59 (10) ◽  
pp. 2030-2037 ◽  
Author(s):  
James H. Johnson
Keyword(s):  
New York ◽  
Food Consumption ◽  
Food Habits ◽  
Diet Composition ◽  
Lake Ontario ◽  
Food Habit ◽  
Dietary Overlap ◽  
Feeding Intensity ◽  
Similar Formula

Food habit studies were conducted on the nymphs of three species of sympatric perlid stoneflies from May to September 1979 in Orwell Brook, New York. A total of 1106 specimens were examined, which included 744 Phasganophora capitata, 251 Paragnetina immarginata, and 111 Acroneuria abnormis. Chironomids, trichopterans, and ephemeropterans were generally the principal, prey of all three species. Using Horn's measure of overlap, the monthly diets of P. immarginata and P. capitata were most similar [Formula: see text] and the diets of A. abnormis and P. immarginata[Formula: see text] least similar. Diel trends in food consumption during July indicated that the feeding intensity of both P. immarginata and P. capitata was the greatest from 2100 to 0500 hours. Examination of the guts of P. immarginata and P. capitata at 4-h intervals over a 24-h period showed that there was considerable variation in the diel diet composition of these species.

Associations between food habits and pharyngeal morphology in the round goby (Neogobius melanostomus)

2017 ◽  
Vol 100 (9) ◽  
pp. 1069-1083 ◽  
Author(s):  
Greg Andraso ◽  
Noelle Blank ◽  
Matthew J. Shadle ◽  
Julie L. DeDionisio ◽  
Michael T. Ganger
Keyword(s):  
Food Habits ◽  
Round Goby ◽  
Neogobius Melanostomus

Diel Diet Composition and Feeding Activity of Round Goby in the Nearshore Region of Lake Ontario

2008 ◽  
Vol 23 (4) ◽  
pp. 607-612 ◽  
Author(s):  
James H. Johnson ◽  
James E. McKenna ◽  
Christopher C. Nack ◽  
Marc A. Chalupnicki
Keyword(s):  
Diet Composition ◽  
Feeding Activity ◽  
Round Goby ◽  
Lake Ontario

Fall diets of alewife, rainbow smelt, and slimy sculpin in the profundal zone of southern Lake Ontario during 1994–2005 with an emphasis on occurrence ofMysis relicta

2008 ◽  
Vol 11 (4) ◽  
pp. 368-376 ◽  
Author(s):  
Maureen G. Walsh ◽  
Robert O'Gorman ◽  
Theodore Strang ◽  
William H. Edwards ◽  
Lars G. Rudstam
Keyword(s):  
Lake Ontario ◽  
Rainbow Smelt ◽  
Slimy Sculpin ◽  
Profundal Zone

Thiamine status of lake trout in lake Ontario and its relation to diet after the colonization of round goby, 2005–2006

2021 ◽  
Author(s):  
John D. Fitzsimons ◽  
Brian Lantry ◽  
Dale C. Honeyfield ◽  
Robert O'Gorman ◽  
Scott A. Rush ◽  
...  
Keyword(s):  
Lake Trout ◽  
Round Goby ◽  
Lake Ontario
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