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Turkish Journal of Fisheries and Aquatic Sciences 2016, Vol 16, Num, 1     (Pages: 205-212)

Relationships between Length-Weight, Age, and Body Condition of the Round Goby Neogobius melanostomus (Pallas) in a Tributary and Harbor Embayment in Southern Lake Michigan, USA

Jaclyn J. Duemler 1 ,Janelle M. Kozelichki 1 ,Thomas P. Simon 1

1 School of Public and Environmental Affairs, 1315 E. Tenth Street, Indiana University, Bloomington, IN 47403 USA DOI : 10.4194/1303-2712-v16_1_21 Viewed : 4285 - Downloaded : 3519 Gender relationships between total length (LT) and standard length (LS) (mm) were compared to weight (MB)(mg) in the round goby, Neogobius melanostomus, for tributary and harbor embayment habitat in southern Lake Michigan. Length and weight relationship (n = 413), LT length-frequency distribution, and sex ratios were determined. A strong positive correlation (P>0.001) was found between length (LT and LS) and weight for both males and females. Male populations showed positive allometric growth rates with b-values and Fulton Condition indices above 3.0, females populations showed positive allometric growth in the tributary populations, but a negative allometric growth rate in the harbor population. Keywords : Growth, Fulton’s condition factor, relative mass index, Laurentian Great Lakes