Trends in body condition of native piscivores following invasion of Lakes Erie and Ontario by the round goby
Summary Biological invaders can provide a highly abundant novel prey, yet the effect this has on the body condition of native predators is unknown. Since invading the L aurentian G reat L akes over two decades ago, the round goby ( N eogobius melanostomus ) has become an important food source for ma...
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crwiley:10.1111/fwb.12473 2024-06-23T07:51:52+00:00 Trends in body condition of native piscivores following invasion of Lakes Erie and Ontario by the round goby Crane, Derek P. Farrell, John M. Einhouse, Donald W. Lantry, Jana R. Markham, James L. 2014 http://dx.doi.org/10.1111/fwb.12473 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.12473 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.12473 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Freshwater Biology volume 60, issue 1, page 111-124 ISSN 0046-5070 1365-2427 journal-article 2014 crwiley https://doi.org/10.1111/fwb.12473 2024-05-31T08:13:36Z Summary Biological invaders can provide a highly abundant novel prey, yet the effect this has on the body condition of native predators is unknown. Since invading the L aurentian G reat L akes over two decades ago, the round goby ( N eogobius melanostomus ) has become an important food source for many native species. We used long‐term data from L akes E rie and O ntario (1993−2012) to create quantile regression models of mass–length relationships for populations of four native predators: smallmouth bass ( M icropterus dolomieu ), yellow perch ( P erca flavescens ), walleye ( S ander vitreus ) and burbot ( L ota lota ). Model‐based estimates of changes in mass‐at‐length following the invasion were used to compare the effects of round goby on relative trends in body condition. Water temperature data were also included in the models, to investigate its effects on body condition. The condition of smallmouth bass increased after the invasion, varying in magnitude between lakes and among size classes. Condition of yellow perch changed variably in direction and magnitude, depending on the quantile of the mass–length relationship examined and fish length, whereas that of walleye increased only for larger fish in L ake O ntario. Minor increases in mass‐at‐length were observed for the smallest length class of burbot, while the body condition of burbot in the largest length class decreased during the study period. Mean summer water temperature did not differ between pre‐ and post‐invasion time periods in L akes E rie and O ntario, although water temperature was a significant predictor of body condition. Changes in body condition may have implications for additional population and life history characteristics. Future research should investigate the effects of the round goby on growth, age at maturity, fecundity and survival of native predators. Article in Journal/Newspaper Burbot lota Wiley Online Library Freshwater Biology 60 1 111 124 |
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English |
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Summary Biological invaders can provide a highly abundant novel prey, yet the effect this has on the body condition of native predators is unknown. Since invading the L aurentian G reat L akes over two decades ago, the round goby ( N eogobius melanostomus ) has become an important food source for many native species. We used long‐term data from L akes E rie and O ntario (1993−2012) to create quantile regression models of mass–length relationships for populations of four native predators: smallmouth bass ( M icropterus dolomieu ), yellow perch ( P erca flavescens ), walleye ( S ander vitreus ) and burbot ( L ota lota ). Model‐based estimates of changes in mass‐at‐length following the invasion were used to compare the effects of round goby on relative trends in body condition. Water temperature data were also included in the models, to investigate its effects on body condition. The condition of smallmouth bass increased after the invasion, varying in magnitude between lakes and among size classes. Condition of yellow perch changed variably in direction and magnitude, depending on the quantile of the mass–length relationship examined and fish length, whereas that of walleye increased only for larger fish in L ake O ntario. Minor increases in mass‐at‐length were observed for the smallest length class of burbot, while the body condition of burbot in the largest length class decreased during the study period. Mean summer water temperature did not differ between pre‐ and post‐invasion time periods in L akes E rie and O ntario, although water temperature was a significant predictor of body condition. Changes in body condition may have implications for additional population and life history characteristics. Future research should investigate the effects of the round goby on growth, age at maturity, fecundity and survival of native predators. |
format |
Article in Journal/Newspaper |
author |
Crane, Derek P. Farrell, John M. Einhouse, Donald W. Lantry, Jana R. Markham, James L. |
spellingShingle |
Crane, Derek P. Farrell, John M. Einhouse, Donald W. Lantry, Jana R. Markham, James L. Trends in body condition of native piscivores following invasion of Lakes Erie and Ontario by the round goby |
author_facet |
Crane, Derek P. Farrell, John M. Einhouse, Donald W. Lantry, Jana R. Markham, James L. |
author_sort |
Crane, Derek P. |
title |
Trends in body condition of native piscivores following invasion of Lakes Erie and Ontario by the round goby |
title_short |
Trends in body condition of native piscivores following invasion of Lakes Erie and Ontario by the round goby |
title_full |
Trends in body condition of native piscivores following invasion of Lakes Erie and Ontario by the round goby |
title_fullStr |
Trends in body condition of native piscivores following invasion of Lakes Erie and Ontario by the round goby |
title_full_unstemmed |
Trends in body condition of native piscivores following invasion of Lakes Erie and Ontario by the round goby |
title_sort |
trends in body condition of native piscivores following invasion of lakes erie and ontario by the round goby |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1111/fwb.12473 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.12473 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.12473 |
genre |
Burbot lota |
genre_facet |
Burbot lota |
op_source |
Freshwater Biology volume 60, issue 1, page 111-124 ISSN 0046-5070 1365-2427 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/fwb.12473 |
container_title |
Freshwater Biology |
container_volume |
60 |
container_issue |
1 |
container_start_page |
111 |
op_container_end_page |
124 |
_version_ |
1802643012125196288 |