Spatial and temporal distributions of lake whitefish spawning stocks in Northern lakes Michigan and Huron, 2003–2008

Ebener, Mark P.; Brenden, Travis O.; Wright, G M; Jones, Michael L.; Faisal, Mohamed

doi:10.1016/j.jglr.2010.02.002

Cited by 66 publications

(64 citation statements)

References 28 publications

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“…Thus, a difference in habitat utilization between the sexes was probably not a factor influencing either the difference in Hg concentrations between the sexes or the difference in PCB concentrations between the sexes of lake whitefish from this Detour spawning stock. Mark-recapture data did not provide any suggestion that males were spatially segregated from females for an extended period of time over the course of the year [34]. Moreover, a difference in diet composition between the sexes of lake whitefish was unlikely, given the results from previous studies on other fish species [26].…”

Section: Discussionmentioning

confidence: 86%

“…This part of Lake Huron is at the center of the spawning area used by the Detour stock of lake whitefish [34]. The trap net catch was retrieved on 6 November 2010, and 60 lake whitefish were randomly selected from the catch.…”

Section: Field Methodsmentioning

confidence: 99%

“…The trap net catch was retrieved on 6 November 2010, and 60 lake whitefish were randomly selected from the catch. Spawning by lake whitefish in northern Lake Huron typically peaks in mid-November [34]. For each of the 60 lake whitefish, weight was determined to the nearest 10 g, total length (TL) was measured to the nearest mm, and sex and maturity were determined by visual inspection of the gonads.…”

Section: Field Methodsmentioning

confidence: 99%

“…Because GSI of females was not significantly correlated with age, we used the same GSI value for all ages of adult female lake whitefish in our simulations. We designated 15 November as the spawning day in our bioenergetics model simulations [34,43], and we assumed that lake whitefish reached maturity by age 8 [44]. Input data, including the water temperature regime experienced by the lake whitefish, diet composition, and energy densities of both prey and the lake whitefish, for the bioenergetics model simulations were taken from Pothoven and Madenjian [5].…”

Section: Bioenergetics Modelingmentioning

confidence: 99%

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Mercury Accumulation, and the Mercury-PCB-Sex Interaction, in Lake Whitefish (Coregonus clupeaformis)

2016

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Abstract:We determined whole-fish Hg concentrations of 26 female and 34 male adult lake whitefish (Coregonus clupeaformis) from northern Lake Huron captured during November 2010. Subsampling from these 60 fish, Hg concentration was also determined in both somatic tissue and ovaries (n = 5), while methylmercury (MeHg) concentration was determined in whole fish (n = 18). Bioenergetics modeling was used to assess the growth dilution effect on the difference in Hg concentrations between the sexes. Mean whole-fish Hg concentration in females (59.9 ng/g) was not significantly different from mean whole-fish Hg concentration in males (54.4 ng/g). MeHg accounted for 91% of the mercury found in the lake whitefish. Bioenergetics modeling results indicated that the growth dilution effect did not contribute to the difference in Hg concentrations between the sexes. We estimated that females increased in Hg concentration by 17.9%, on average, immediately after spawning due to release of eggs. Using polychlorinated biphenyl (PCB) data for the same 60 lake whitefish from a previous study, we detected a significant interaction between sex and contaminant type (Hg or PCBs), which was attributable to males being significantly higher in PCB concentration than females. Males may be eliminating Hg at a faster rate than females.

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Section: Discussionmentioning

confidence: 86%

Section: Field Methodsmentioning

confidence: 99%

Section: Field Methodsmentioning

confidence: 99%

Section: Bioenergetics Modelingmentioning

confidence: 99%

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Mercury Accumulation, and the Mercury-PCB-Sex Interaction, in Lake Whitefish (Coregonus clupeaformis)

2016

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“…Density dependence is, however, a likely compensatory response in lake whitefish and so should be considered if conditions arose to make such dependence important. Another potential area of concern is the apparent increase in movements of lake whitefish during the non-spawning season as food supplies have declined (Ebener et al, 2010). This may require redefinition of management areas or assessment approaches.…”

Section: Discussionmentioning

confidence: 99%

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

Deroba

Bence

2012

Fisheries Research

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The spatial and seasonal patterns and stability of the Lake Whitefish fishery in Michigan waters of southern Lake Huron

He,

Goniea,

Bence

et al. 2024

N American J Fish Manag

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ObjectiveGiven that the harvested fish from five separate fishing grounds belong to one large mixed population, our objective is to develop an overall abundance index for Lake Whitefish Coregonus clupeaformis in Michigan waters of southern Lake Huron.MethodsWe analyzed catch‐and‐effort data for individual fishing trips to five separate fishing grounds and used Bayesian information criterion to select the best model struture.ResultThe best model included the year × area × month interaction as a random effect, representing the random component in fishery dynamics that were influenced by both fishing practices and fish abundance. The best model also included the fixed effects of area × month interaction, a result consistent with our hypothesis that the seasonal spatial migrations of Lake Whitefish provide the links among the fisheries in separate fishing grounds, and the fishery yields from these separate areas were all dependent on the production in southern Lake Huron as a whole. After adjusting for the random effect of year × area × month interaction and the fixed effects of area × month interaction, the estimated patterns for the fixed year effect indicated that the Lake Whitefish abundance in Michigan waters of southern Lake Huron declined during the late 2000s but has been relatively constant after 2012.ConclusionThe declines in annual fishery yield were due to and could be explained more by the decreases in fish abundance through 2012 but thereafter primarily reflected the declines in annual fishing effort as the fisheries continued to adjust to the changed fishing conditions. We also provided general lessons for studying fisheries without fishery independent surveys but with detailed seasonal and spatial catch‐and‐effort data.

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Spatial and temporal distributions of lake whitefish spawning stocks in Northern lakes Michigan and Huron, 2003–2008

Cited by 66 publications

References 28 publications

Mercury Accumulation, and the Mercury-PCB-Sex Interaction, in Lake Whitefish (Coregonus clupeaformis)

Mercury Accumulation, and the Mercury-PCB-Sex Interaction, in Lake Whitefish (Coregonus clupeaformis)

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

The spatial and seasonal patterns and stability of the Lake Whitefish fishery in Michigan waters of southern Lake Huron

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