Spatiotemporal variability in energetic condition of alewife and round goby in Lake Michigan

Bunnell, David B.; Pothoven, Steven A.; Armenio, Patricia M.; Eaton, Lauren; Warner, David M.; Elgin, Ashley K.; Burlakova, Lyuba E.; Karatayev, Alexander Y.

doi:10.1139/cjfas-2018-0391

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Spatiotemporal variability in energetic condition of alewife and round goby in Lake Michigan

2019
By Bunnell, David B. ; Pothoven, Steven A. ; Armenio, Patricia M. ; ...
Source: Canadian Journal of Fisheries and Aquatic Sciences, 76(11), 1982-1992

[PDF-1.53 MB]

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Journal Title:

Canadian Journal of Fisheries and Aquatic Sciences
Personal Author:

Bunnell, David B. ; Pothoven, Steven A. ; Armenio, Patricia M. ; Eaton, Lauren ; Warner, David M. ; ... More +

Bunnell, David B. ; Pothoven, Steven A. ; Armenio, Patricia M. ; Eaton, Lauren ; Warner, David M. ; Elgin, Ashley K. ; Burlakova, Lyuba E. ; Karatayev, Alexander Y. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; GLERL (Great Lakes Environmental Research Laboratory)

OAR (Oceanic and Atmospheric Research) ; GLERL (Great Lakes Environmental Research Laboratory) Less -
Description:

Pelagic-oriented alewife (Alosa pseudoharengus) and benthic-oriented round goby (Neogobius melanostomus) are two important prey fishes in the Laurentian Great Lakes. In 2015, we evaluated their seasonal total energy (TE) across nine Lake Michigan transects. Round goby contained at least 48% more kilojoules of TE than alewife of equal length during spring and summer. TE varied spatially for both species, but only large alewife exhibited a consistent pattern, with higher values along the eastern shoreline. Variation in TE was not explained by site-specific prey densities for either species. Round goby energy density (ED) was higher in Lake Michigan than in central Lake Erie, but comparable to other regions of the Great Lakes. Alewife ED in 2015 was similar to that in 2002–2004 in Lake Michigan, with the exception of November (small alewife ED was 21% higher) and April (large alewife ED was 30% lower). Despite oligotrophication, our study suggests that starvation of juvenile and adults has not been directly contributing to overall declining prey fish abundance, although future research should evaluate the potential for overwinter starvation.
Source:

Canadian Journal of Fisheries and Aquatic Sciences, 76(11), 1982-1992
DOI:

https://doi.org/10.1139/cjfas-2018-0391
ISSN:

0706-652X;1205-7533;
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pdf
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Canadian Science Publishing
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Journal Article
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urn:sha-512:49e6079bb6642b5884799f452ef868b8663686c9e0ae0674931f0b05335d8ce04f103e8de93b9c0717577d2788730a447ec4291ffc4940daf7812f048ac29b4f
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Spatiotemporal variability in energetic condition of alewife and round goby in Lake Michigan

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