Comparison of Lake Whitefish (Coregonus clupeaformis) Growth, Condition, and Energy Density between Lakes Erie and Ontario

Lumb, Chelsey E.; Johnson, Timothy B.; Cook, H. Andrew; Hoyle, James A.

doi:10.3394/0380-1330(2007)33[314:colwcc]2.0.co;2

Cited by 45 publications

(35 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within both Lake Huron sites, growth rates were variable among cohorts and generally declined across the time series. Trends of declining growth have been reported at multiple sites in the Laurentian Great Lakes and have been attributed to changing food webs (Ebener, 2013; Fera, Rennie, & Dunlop, 2015; Gobin et al., 2015; Lumb, Johnson, Cook, & Hoyle, 2007; Rennie et al., 2009). Through plasticity, a reduction in growth was associated with an increase in age at 50% maturity and a decrease in length at 50% maturity.…”

Section: Discussionmentioning

confidence: 99%

Size‐selective fishing and the potential for fisheries‐induced evolution in lake whitefish

Morbey

Mema

2018

Evolutionary Applications

View full text Add to dashboard Cite

The long‐term evolutionary effects of fishing on maturation schedules can depend on gear type, the shape of the gear type's size‐selectivity function, and the size and age structure of a population. Our goal was to better understand how environmentally induced differences in somatic growth influence the evolutionary effects of size‐selective fisheries, using lake whitefish (Coregonus clupeaformis) in Lake Huron as a case study. Using a state‐dependent optimization model of energy allocation parameterized for lake whitefish, we show that fishing with gill nets (bell‐shaped selectivity) and trap nets (sigmoid‐shaped selectivity) can be potent agents of selection on size thresholds for maturity. Compared to trap nets and large mesh (114 mm) gill nets, small mesh (89 mm) gill nets are better able to buffer populations from fishing‐induced evolution by safeguarding large, fecund fish, but only when overall fishing mortality is low and growth rates sufficiently fast such that fish can outgrow vulnerable size classes. Regardless of gear type, and all else being equal, high fishing mortality in combination with low growth rates is expected to intensify the long‐term evolutionary effects of fishing.

show abstract

Section: Discussionmentioning

confidence: 99%

Size‐selective fishing and the potential for fisheries‐induced evolution in lake whitefish

Morbey

Mema

2018

Evolutionary Applications

View full text Add to dashboard Cite

show abstract

“…For example, lake whitefish growth in some areas of the Great Lakes has declined in recent years, but similar declines have not occurred everywhere (e.g., Cook et al, 2005;Mohr and Nalepa, 2005;Lumb et al, 2007). Growth rates, maturity schedules, natural mortality, and stock-recruit relationships also likely vary spatially due to factors such as different historical exploitation patterns, habitat differences, or other long-term differences in environmental conditions (e.g., Wang et al, 2008).…”

Section: Lake Whitefish Fishery History and Managementmentioning

confidence: 96%

Evaluating harvest control rules for lake whitefish in the Great Lakes: Accounting for variable life-history traits

Deroba

Bence

2012

Fisheries Research

View full text Add to dashboard Cite

“…As dreissenid mussels increased in abundance in the Great Lakes, the abundance of Diporeia, a deepwater amphipod and once a prominent member of the profundal food web, declined dramatically. Diporeia are widely cited to have been a key component of lake whiteWsh diets before the invasion of dreissenids (Pothoven et al 2001;Lumb et al 2007;Pothoven and Madenjian 2008). However, suYcient data to conWrm this observation are lacking in the primary literature, and historical descriptions of whiteWsh diets that have been reported are based on small sample sizes and lack any seasonal resolution (e.g., Hart 1931;Ihssen et al 1981).…”

mentioning

confidence: 86%

Resource switching in fish following a major food web disruption

2009

Self Cite

View full text Add to dashboard Cite

Dreissenid mussels (Dreissena polymorpha and D. bugensis) have re-engineered Great Lakes ecosystems since their introduction in the late 1980s. Dreissenids can have major indirect impacts on profundal habitats by redirecting nutrients and energy away from pelagic production (which supplies profundal production) and depositing nutrients and energy in the nearshore zones that they occupy. However, strong empirical evidence for the effects of this redirection of resources on fish populations is currently lacking. Here, we report significant shifts in isotopic signatures, depth distribution and diets of a coldwater profundal fish population that are all consistent with a greater reliance on nearshore resources after the establishment of dreissenid mussels in South Bay, Lake Huron. Isotopic signatures of scales collected from 5-year-old lake whitefish (Coregonus clupeaformis) demonstrated remarkable stability over the 50-year period prior to the establishment of dreissenids (1947-1997) and a sudden and significant change in isotopic signatures (3 per thousand enrichment in delta13C and 1 per thousand depletion in delta(15)N) after their establishment (2001-2005). These dramatic shifts in isotopic signatures were accompanied by a coincident shift in the mean depth of capture of lake whitefish towards the nearshore. A comparison of previously unpublished pre-invasion diets of lake whitefish from South Bay with contemporary diets collected between 2002 and 2005 also indicate a greater reliance on nearshore prey after the invasion of dreissenid mussels. This study is the first to report changes in the carbon source available to lake whitefish associated with restructured benthic communities after the appearance of dreissenid mussels. Further, this study contributes to a growing body of work that demonstrates the ecological insights that can be gained through isotopic analysis of archived fish bony tissues in ecosystems that have experienced significant levels of disturbance.

show abstract

Comparison of Lake Whitefish (Coregonus clupeaformis) Growth, Condition, and Energy Density between Lakes Erie and Ontario

Cited by 45 publications

References 3 publications

Size‐selective fishing and the potential for fisheries‐induced evolution in lake whitefish

Size‐selective fishing and the potential for fisheries‐induced evolution in lake whitefish

Evaluating harvest control rules for lake whitefish in the Great Lakes: Accounting for variable life-history traits

Resource switching in fish following a major food web disruption

Contact Info

Product

Resources

About