Anna Poslednik, an intern from 2019 at CBFS and an honors student who worked with Tom Evans, Randy Jackson, Tony VanDeValk, Tom Brooking and Lars Rudstam just published her work in the journal PLoS ONE on the use of stable isotopes to evaluate Round Goby diets in Oneida Lake. Anna performed both lab experiments and field sampling in Oneida Lake. With the laboratory derived measures of the discrimination rates for carbon and nitrogen isotopes, she was able to show that diets obtained with gut analysis and stable isotopes are similar, and that larger gobies feed primarily on mussels in Oneida Lake. This work helps us understand both goby biology and the differences in two widely used diet analysis methods.
Poslednik, AM, TM Evans, JR Jackson, AJ VanDeValk, TE Brooking, and LG Rudstam. 2023. Round goby (Neogobius melanostomus) δ13C/δ15N discrimination values and comparisons of diets from gut content and stable isotopes in Oneida Lake. PLoS One 18. e0284933
https://doi.org/10.1371/journal.pone.0284933
