Influence of Thiamine Deficiency on Lake Trout Larval Growth, Foraging, and Predator Avoidance
Abstract Diet‐related thiamine deficiency increases the acute mortality, known as early mortality syndrome, of salmonines from some of the Great Lakes. The consequences of thiamine deficiency as measured at the egg stage for other important early life stage processes like growth, foraging efficiency...
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crwiley:10.1577/h08-019.1 2023-12-03T10:21:21+01:00 Influence of Thiamine Deficiency on Lake Trout Larval Growth, Foraging, and Predator Avoidance Fitzsimons, John D. Brown, Scott B. Williston, Bill Williston, Georgina Brown, Lisa R. Moore, Kristin Honeyfield, Dale C. Tillitt, Donald E. Great Lakes Fishery Trust 2009 http://dx.doi.org/10.1577/h08-019.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/H08-019.1 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Aquatic Animal Health volume 21, issue 4, page 302-314 ISSN 0899-7659 1548-8667 Aquatic Science journal-article 2009 crwiley https://doi.org/10.1577/h08-019.1 2023-11-09T13:33:47Z Abstract Diet‐related thiamine deficiency increases the acute mortality, known as early mortality syndrome, of salmonines from some of the Great Lakes. The consequences of thiamine deficiency as measured at the egg stage for other important early life stage processes like growth, foraging efficiency, and predator avoidance that may also result in mortality, are unknown. Accordingly, we investigated the impacts of low thiamine on the specific growth rate (SGR) of first‐feeding fry, the ability of first‐feeding fry to capture Daphnia , fry emergence in the presence of a potential predator (round goby Apollina (formerly Neogobius ) melanostomus ), and predation by slimy sculpin Cottus cognatus . We used a combination of thiamine‐deficient and thiamine‐replete wild stocks of lake trout Salvelinus namaycush for this purpose. From these investigations we developed predictive relationships. Specific growth rate was related to egg thiamine concentration. From the exponential relationship, it was predicted that the threshold egg thiamine concentrations associated with 20% and 50% reductions in SGR are 8.1 and 5.1 nmol/g, respectively. The foraging rate on Daphnia was also related to egg thiamine concentration by an exponential relationship. It was predicted that the threshold concentrations associated with 20% and 50% reductions in this rate are 6.9 and 2.9 nmol/g, respectively. The presence of a round goby significantly reduced emergence success, but the level of goby predation was unrelated to egg thiamine concentration. Sculpin predation was related, although weakly, to the initial egg thiamine concentration. This research found that thiamine deficiency affected growth, foraging, and predator avoidance in lake trout fry. Growth effects resulting from thiamine deficiency may represent the most sensitive means of monitoring the impact of the secondary consequences of thiamine deficiency. Mortality associated with the combined effects of reduced growth and foraging has the potential to seriously impair lake trout ... Article in Journal/Newspaper Cottus cognatus Slimy sculpin Wiley Online Library (via Crossref) Journal of Aquatic Animal Health 21 4 302 314 |
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Wiley Online Library (via Crossref) |
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language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Fitzsimons, John D. Brown, Scott B. Williston, Bill Williston, Georgina Brown, Lisa R. Moore, Kristin Honeyfield, Dale C. Tillitt, Donald E. Influence of Thiamine Deficiency on Lake Trout Larval Growth, Foraging, and Predator Avoidance |
topic_facet |
Aquatic Science |
description |
Abstract Diet‐related thiamine deficiency increases the acute mortality, known as early mortality syndrome, of salmonines from some of the Great Lakes. The consequences of thiamine deficiency as measured at the egg stage for other important early life stage processes like growth, foraging efficiency, and predator avoidance that may also result in mortality, are unknown. Accordingly, we investigated the impacts of low thiamine on the specific growth rate (SGR) of first‐feeding fry, the ability of first‐feeding fry to capture Daphnia , fry emergence in the presence of a potential predator (round goby Apollina (formerly Neogobius ) melanostomus ), and predation by slimy sculpin Cottus cognatus . We used a combination of thiamine‐deficient and thiamine‐replete wild stocks of lake trout Salvelinus namaycush for this purpose. From these investigations we developed predictive relationships. Specific growth rate was related to egg thiamine concentration. From the exponential relationship, it was predicted that the threshold egg thiamine concentrations associated with 20% and 50% reductions in SGR are 8.1 and 5.1 nmol/g, respectively. The foraging rate on Daphnia was also related to egg thiamine concentration by an exponential relationship. It was predicted that the threshold concentrations associated with 20% and 50% reductions in this rate are 6.9 and 2.9 nmol/g, respectively. The presence of a round goby significantly reduced emergence success, but the level of goby predation was unrelated to egg thiamine concentration. Sculpin predation was related, although weakly, to the initial egg thiamine concentration. This research found that thiamine deficiency affected growth, foraging, and predator avoidance in lake trout fry. Growth effects resulting from thiamine deficiency may represent the most sensitive means of monitoring the impact of the secondary consequences of thiamine deficiency. Mortality associated with the combined effects of reduced growth and foraging has the potential to seriously impair lake trout ... |
author2 |
Great Lakes Fishery Trust |
format |
Article in Journal/Newspaper |
author |
Fitzsimons, John D. Brown, Scott B. Williston, Bill Williston, Georgina Brown, Lisa R. Moore, Kristin Honeyfield, Dale C. Tillitt, Donald E. |
author_facet |
Fitzsimons, John D. Brown, Scott B. Williston, Bill Williston, Georgina Brown, Lisa R. Moore, Kristin Honeyfield, Dale C. Tillitt, Donald E. |
author_sort |
Fitzsimons, John D. |
title |
Influence of Thiamine Deficiency on Lake Trout Larval Growth, Foraging, and Predator Avoidance |
title_short |
Influence of Thiamine Deficiency on Lake Trout Larval Growth, Foraging, and Predator Avoidance |
title_full |
Influence of Thiamine Deficiency on Lake Trout Larval Growth, Foraging, and Predator Avoidance |
title_fullStr |
Influence of Thiamine Deficiency on Lake Trout Larval Growth, Foraging, and Predator Avoidance |
title_full_unstemmed |
Influence of Thiamine Deficiency on Lake Trout Larval Growth, Foraging, and Predator Avoidance |
title_sort |
influence of thiamine deficiency on lake trout larval growth, foraging, and predator avoidance |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1577/h08-019.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/H08-019.1 |
genre |
Cottus cognatus Slimy sculpin |
genre_facet |
Cottus cognatus Slimy sculpin |
op_source |
Journal of Aquatic Animal Health volume 21, issue 4, page 302-314 ISSN 0899-7659 1548-8667 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1577/h08-019.1 |
container_title |
Journal of Aquatic Animal Health |
container_volume |
21 |
container_issue |
4 |
container_start_page |
302 |
op_container_end_page |
314 |
_version_ |
1784269037306380288 |