Biotic and Abiotic Determinants of Lake Whitefish (Coregonus ciupeaformis) Recruitment in Northeastern Lake Michigan

1987 ◽  
Vol 44 (S2) ◽  
pp. s313-s323 ◽  
Author(s):  
William W. Taylor ◽  
Martin A. Smale ◽  
Mark H. Freeberg
Keyword(s):  
Lake Michigan ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Cold Winter ◽  
Egg Survival ◽  
Spawning Stock ◽  
Stock Recruitment ◽  
Spring Temperatures ◽  
Reproductive Rates ◽  
Spawning Biomass

Comparisons of lifetime average per capita reproductive rates (R0) between stocks of lake whitefish (Coregonus clupeaformis) in Lake Michigan found higher estimates of R0 for rapidly growing exploited stocks than for a commercially unexploited stock. Earlier maturation was the prime cause of this increase. Exploited stocks, however, were dependent on fewer age-classes for reproduction and had a greater potential for instability due to annual variation in recruitment. Overwinter whitefish egg survival in Grand Traverse Bay was nearly fourfold higher during a cold winter with prevalent ice than during the preceding mild, ice-free winter. However, the higher densities of larvae produced during the cold winter experienced greater mortality, with starvation the likely cause. Factors found to influence a stock–recruitment relationship developed for year-classes from 1958 to 1980 included spawning biomass, winter severity (ice-cover), and spring temperatures. Periods of abnormally high and low whitefish catch corresponded to periods in which cold or warm winters were more frequent, respectively. Harvest strategies that dampen naturally caused fluctuations in the spawning stock are recommended.

Does spawning stock affect recruitment of New England groundfish?

2001 ◽  
Vol 58 (2) ◽  
pp. 306-318 ◽  
Author(s):  
Jon KT Brodziak ◽  
William J Overholtz ◽  
Paul J Rago
Keyword(s):  
New England ◽  
Bayesian Methods ◽  
Survival Ratio ◽  
Single Model ◽  
Potential Productivity ◽  
Autocorrelated Error ◽  
Spawning Stock ◽  
Stock Recruitment ◽  
Spawning Biomass ◽  
Better Than

We evaluated the effects of spawning-stock size on the recruitment abundance of 11 groundfish stocks in waters off New England. Empirical patterns of association between spawning biomass and recruitment were investigated using nonparametric approaches. For most stocks, higher recruitment occurred at high stock sizes and lower recruitment at low stock sizes. Survival ratios, indexed by recruitment per unit of spawning biomass, were higher at low stock sizes and lower at high stock sizes-as expected under density dependence. To assess assumptions about recruitment dynamics, we analyzed constant-recruitment and compensatory and overcompensatory stock-recruitment models with uncorrelated and autocorrelated error structures, using Bayesian methods of statistical inference. Although no single model was adequate for all stocks, most groundfish had better than even odds of having density-dependent dynamics, and most had better than even odds of having dynamics with uncorrelated environmental variation. While some geographic and taxonomic differences in potential productivity were apparent, all stocks exhibited compensation in survival ratio at low stock sizes, albeit with substantial variation. These results indicate that conservation measures intended to increase the spawning biomass of New England groundfish will, on average, result in higher recruitment and, eventually, in increased and more stable fishery yields.

Postimpoundment Winter Sedimentation and Survival of Lake Whitefish (Coregonus clupeaformis) Eggs in Southern Indian Lake, Manitoba

1984 ◽  
Vol 41 (4) ◽  
pp. 701-705 ◽  
Author(s):  
R. J. P. Fudge ◽  
R. A. Bodaly
Keyword(s):  
Organic Content ◽  
Silty Clay ◽  
Sedimentation Rates ◽  
Hydroelectric Power ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Egg Survival ◽  
Spawning Areas ◽  
Lacustrine Clay ◽  
Wave Erosion

Flooding of Southern Indian Lake for hydroelectric power development has resulted in extensive wave erosion of glacio-lacustrine clay shore material and greatly increased suspended sediment levels. Winter sedimentation on spawning grounds of lake whitefish (Coregonus clupeaformis) ranged from 0.03 to 0.14 g dry wt sediment∙cm−2. This deposited a layer 1–4 mm in depth. The sediment, low in organic content, was categorized as silty clay. The effect of this winter sedimentation on survival of whitefish eggs was tested at four sites over a range of winter sedimentation rates. Three of the sites were whitefish spawning areas. Egg survival was significantly higher for eggs incubated in cages designed to minimize exposure to sedimentation compared with survival in cages allowing full exposure to sedimentation. Winter sedimentation rates and whitefish egg survival were negatively correlated for cages designed to minimize exposure to sedimentation, while egg survival in the exposed cages was uniformly low.

Spatial and temporal variation of maturation schedules of lake whitefish (Coregonus clupeaformis) in the Great Lakes

2008 ◽  
Vol 65 (10) ◽  
pp. 2157-2169 ◽  
Author(s):  
Hui-Yu Wang ◽  
Tomas O. Höök ◽  
Mark P. Ebener ◽  
Lloyd C. Mohr ◽  
Philip J. Schneeberger
Keyword(s):  
Great Lakes ◽  
Lake Michigan ◽  
Spatial And Temporal Variation ◽  
Ecosystem Structure ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Adaptive Responses ◽  
Fish Stocks ◽  
Ecosystem Changes ◽  
Plastic Responses

Fish maturation schedules vary greatly among systems and over time, reflecting both plastic and adaptive responses to ecosystem structure, physical habitats, and mortality (natural and fishing). We examined maturation schedules of commercially exploited lake whitefish ( Coregonus clupeaformis ) in the Laurentian Great Lakes (Lakes Michigan, Huron, and Superior) by estimating ages and lengths at 50% maturity, age-specific maturity ogives (age-specific probability of being mature), and probabilistic maturation reaction norms (PMRNs; a metric that accounts for effects of growth and mortality). Collectively, these estimates indicated variation in maturation schedules between sexes (i.e., males tend to mature at younger ages and shorter lengths than females) and among systems (midpoint estimates of PMRNs were smallest for Lake Michigan fish, intermediate for fish in the main basin of Lake Huron, and largest for fish in Lake Huron’s Georgian Bay and Lake Superior). Temporally, recent increases in age at 50% maturity in Lakes Huron and Michigan may primarily reflect plastic responses to decreased growth rates associated with ecosystem changes (e.g., declines of the native amphipod, Diporeia spp.). As plastic and adaptive changes in maturation schedules of fish stocks may occur simultaneously and require different management considerations, we recommend the concomitant analysis of multiple maturation indices.

Assessment of the United States Lake Whitefish (Coregonus clupeaformis) Fisheries of Lake Superior, Lake Michigan, and Lake Huron

1976 ◽  
Vol 33 (4) ◽  
pp. 747-759 ◽  
Author(s):  
A. L. Jensen
Keyword(s):  
Lake Michigan ◽  
Lake Superior ◽  
The United States ◽  
Sea Lamprey ◽  
Maximum Sustainable Yield ◽  
Lake Huron ◽  
Production Model ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Surplus Production Model

The logistic surplus production model is applied to lake whitefish (Coregonus clupeaformis) yield and effort data from Lake Superior, Lake Michigan, and Lake Huron. The fitted models indicate that the whitefish populations in most areas of the lakes have been overexploited, and that in these areas yield was below the maximum sustainable yield before sea lamprey (Petromyzon marinus) predation took its toll. In some areas of Lake Superior the whitefish populations are not overexploited. The sea lamprey is the apparent cause of the drastic decrease in the whitefish population that occurred in northern Lake Michigan during the 1950’s.

Feeding by Alewives (Alosa pseudoharengus) on Larval Lake Whitefish (Coregonus clupeaformis) in the Laboratory

1974 ◽  
Vol 31 (2) ◽  
pp. 229-230 ◽  
Author(s):  
Walter J. Hoagman
Keyword(s):  
Standard Deviation ◽  
Lake Michigan ◽  
Average Length ◽  
Alosa Pseudoharengus ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish

Adult alewives (Alosa pseudoharengus) from Lake Michigan readily ate larval lake white-fish (Coregonus clupeaformis) of 16.3 mm (standard deviation 1.4 mm) average length in the laboratory. They ignored the larvae when the latter had grown to 19.5 mm (SD = 1.6 mm) and 24.9 mm (SD = 3.2 mm) average length.

Population or Stock Structure of Lake Whitefish, Coregonus clupeaformis, in Northern Lake Michigan as Assessed by Isozyme Electrophoresis

1980 ◽  
Vol 37 (5) ◽  
pp. 783-793 ◽  
Author(s):  
Mark Imhof ◽  
Robb Leary ◽  
Henry E. Booke
Keyword(s):  
Cluster Analysis ◽  
Lake Michigan ◽  
Electrophoretic Analysis ◽  
Clinal Variation ◽  
Stock Structure ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Isozyme Electrophoresis ◽  
Spatial Overlap ◽  
Temporal And Spatial

Electrophoretic analysis of three polymorphic isozymes (lactate, malate, and glycerol-3-phosphate dehydrogenases) from lake whitefish, Coregonus clupeaformis, indicated that at least four populations exist in northern Lake Michigan. Cluster analysis of Nei genetic identity indices revealed much temporal and spatial overlap among population ranges. The overlap did not appear complete since the LDH A allele exhibited clinal variation with increasing frequency from south to north. Because population ranges overlap spatially and temporally, commercial catches are likely to contain fish from more than one population.Key words: population (stock), isozyme electrophoresis, lake whitefish, Lake Michigan

Genetic structure of lake whitefish (Coregonus clupeaformis) in Lake Michigan

2009 ◽  
Vol 66 (3) ◽  
pp. 382-393 ◽  
Author(s):  
Justin A. VanDeHey ◽  
Brian L. Sloss ◽  
Paul J. Peeters ◽  
Trent M. Sutton
Keyword(s):  
Lake Michigan ◽  
Isolation By Distance ◽  
Genetic Relationships ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Genetic Stock ◽  
Data Set ◽  
Genetic Stock Identification ◽  
Genetic Groups ◽  
Mixed Stock

Genetic relationships among lake whitefish ( Coregonus clupeaformis ) spawning aggregates in Lake Michigan were assessed and used to predict a stock or management unit (MU) model for the resource. We hypothesized that distinct spawning aggregates represented potential MUs and that differences at molecular markers underlie population differentiation. Genetic stock identification using 11 microsatellite loci indicated the presence of six genetic MUs. Resolved MUs corresponded to geographically proximate spawning aggregates clustering into genetic groups. Within MUs, analyses suggested that all but one delineated MU was a stable grouping (i.e., no between-population differences), with the exception being the Hog Island – Traverse Bay grouping. Elk Rapids was the most genetically divergent population within Lake Michigan. However, low Fst values suggested that moderate to high levels of gene flow occur or have occurred in the past between MUs. Significant tests of isolation by distance and low pairwise Fst values potentially led to conflicting results between traditional analyses and a Bayesian approach. This data set could provide baseline data from which a comprehensive mixed-stock analysis could be performed, allowing for more efficient and effective management of this economically and socially important resource.

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