Trends in Percid Yields from Lake of the Woods, 1888–1973

1977 ◽  
Vol 34 (10) ◽  
pp. 1784-1791 ◽  
Author(s):  
D. H. Schupp ◽  
V. Macins
Keyword(s):  
Yellow Perch ◽  
Perca Flavescens ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Coregonus Clupeaformis ◽  
Short Term ◽  
Lake Of The Woods ◽  
Northern Areas ◽  
Yield Trends ◽  
Commercial Yield

Commercial yields of walleye (Stizostedion vitreum vitreum) increased from 1888 to the mid-1930s and then gradually declined to 1973. Commercial yields of sauger (S. canadense) and yellow perch (Perca flavescens), first recorded in 1926, were more stable than walleye yields. The increase in walleye yields was associated with declines in the yield of lake sturgeon (Acipenser fulvescens) and lake whitefish (Coregonus clupeaformis). Walleye yields declined from 1.7 kg∙ha−1 annually in the 1930s to 0.8 kg∙ha−1 during 1964–73. Exploitation by commercial and sport fisheries appeared to be the main cause of the decline. Creel surveys from 1967 to 1971 indicated that the sportfishing yield exceeded the commercial yield, and the combined harvest was near the high levels in the 1930s. Wider fluctuations in yield observed since the 1950s suggested that recruitment had become more variable. Short-term increases in growth rate were observed in one area after intensive walleye harvests, but in other parts of the lake no change in growth rates was observed. Sauger appeared to be increasing in abundance in the northern areas of the lake, probably in response to increasing turbidity. Key words: Percidae, yield trends, Stizostedion, Perca, harvest

Short-term growth (RNA/DNA ratio) of yellow perch (Perca flavescens) in relation to environmental influences and spatio-temporal variation in a shallow fluvial lake

2007 ◽  
Vol 64 (12) ◽  
pp. 1646-1655 ◽  
Author(s):  
Hélène Glémet ◽  
Marco A Rodríguez
Keyword(s):  
Temporal Variation ◽  
Water Level ◽  
Yellow Perch ◽  
Perca Flavescens ◽  
Negative Influence ◽  
Water Levels ◽  
Short Term ◽  
Ecological Processes ◽  
Flood Pulse Concept ◽  
Spatio Temporal

Shallow fluvial lakes are heterogeneous ecosystems in which marked spatio-temporal variation renders difficult the analysis of key ecological processes, such as growth. In this study, we used generalized additive modelling of the RNA/DNA ratio, an index of short-term growth, to investigate the influence of environmental variables and spatio-temporal variation on growth of yellow perch (Perca flavescens) in Lake St. Pierre, Quebec, Canada. Temperature and water level had seemingly stronger effects on short-term growth than seasonal change or spatial variation between and along the lakeshores. Consistent with previous studies, the maximum RNA/DNA ratio was found at 20.5 °C, suggesting that our approach provides a useful tool for estimating thermal optima for growth in the field. The RNA/DNA ratio showed a positive relationship with water level, as predicted by the flood pulse concept, a finding with implications for ecosystem productivity in fluvial lakes. The RNA/DNA ratio was more variable along the north than the south shore, possibly reflecting exposure to more differentiated water masses. The negative influence of both high temperatures and low water levels on growth points to potential impacts of climatic change on fish production in shallow fluvial lakes.

Effect of Acclimation Temperature and Heat Shock on Vulnerability of Fry of Lake Whitefish (Coregonus clupeaformis) to Predation

1974 ◽  
Vol 31 (9) ◽  
pp. 1503-1506 ◽  
Author(s):  
Thomas G. Yocom ◽  
Thomas A. Edsall
Keyword(s):  
Heat Shock ◽  
Yellow Perch ◽  
Perca Flavescens ◽  
Acclimation Temperature ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Attack Data

Fry of lake whitefish (Coregonus clupeaformis) acclimated to 10, 15, and 18 C were exposed to temperatures of 24.5, 25, and 28 C for 1 min and then immediately returned to water at their acclimation temperature, in test tanks containing yearling yellow perch (Perca flavescens). The number of attacks on the fry and the number captured and eaten in 30 min were recorded in separate tests of shocked and unshocked (control) whitefish.Significantly more whitefish were captured per attack (data for shocked and unshocked fry combined) at 15 and 18 C than at 10 C; and shocked fry were significantly more vulnerable to capture by the perch than were unshocked controls.

Suitability of Vertical Slot and Denil Fishways for Passing North-Temperate, Nonsalmonid Fish

1985 ◽  
Vol 42 (11) ◽  
pp. 1815-1822 ◽  
Author(s):  
Karl Schwalme ◽  
William C. Mackay ◽  
Dieter Lindner
Keyword(s):  
Yellow Perch ◽  
Perca Flavescens ◽  
High Water ◽  
Water Levels ◽  
Coregonus Clupeaformis ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Vertical Slot ◽  
Vertical Slot Fishway ◽  
Longnose Sucker

A vertical slot fishway and two Denil fishways (of 10 and 20% slope) built into a weir on the Lesser Slave River (55°18′N, 115°45′W) were studied from May 12 to June 25, 1984, to determine how effectively these designs pass north-temperate, nonsalmonid fishes. Thousands of spottail shiner (Notropis hudsonius), substantial numbers (> 100) of northern pike (Esox lucius), longnose sucker (Catostomus catostomus), white sucker (Catostomus commersoni), immature yellow perch (Perca flavescens), and lesser numbers of burbot (Lota lota), adult yellow perch, lake whitefish (Coregonus clupeaformis), and trout-perch (Percopsis omiscomaycus) ascended the fishways. Walleye (Stizostedion vitreum) and goldeye (Hiodon alosoides), although probably moving extensively through the river, did not use the fishways. Although high water levels allowed most fish to surmount the weir, of those that chose the fishway, pike strongly preferred to ascend the Denil fishways and the two sucker species preferred to ascend the vertical slot. Therefore, a combination of several different fishways may be required for the most efficient passage of a wide variety of species. Plasma glucose and lactate measurements on pike revealed that ascending the Denil fishways was only moderately stressful for these fish.

scholarly journals Dynamics of the Lake Michigan food web, 1970–2000

2002 ◽  
Vol 59 (4) ◽  
pp. 736-753 ◽  
Author(s):  
Charles P Madenjian ◽  
Gary L Fahnenstiel ◽  
Thomas H Johengen ◽  
Thomas F Nalepa ◽  
Henry A Vanderploeg ◽  
...  
Keyword(s):  
Food Web ◽  
Zebra Mussel ◽  
Dreissena Polymorpha ◽  
Yellow Perch ◽  
Lake Michigan ◽  
Petromyzon Marinus ◽  
Perca Flavescens ◽  
Sea Lamprey ◽  
Alosa Pseudoharengus ◽  
Coregonus Clupeaformis

Herein, we document changes in the Lake Michigan food web between 1970 and 2000 and identify the factors responsible for these changes. Control of sea lamprey (Petromyzon marinus) and alewife (Alosa pseudoharengus) populations in Lake Michigan, beginning in the 1950s and 1960s, had profound effects on the food web. Recoveries of lake whitefish (Coregonus clupeaformis) and burbot (Lota lota) populations, as well as the buildup of salmonine populations, were attributable, at least in part, to sea lamprey control. Based on our analyses, predation by salmonines was primarily responsible for the reduction in alewife abundance during the 1970s and early 1980s. In turn, the decrease in alewife abundance likely contributed to recoveries of deepwater sculpin (Myoxocephalus thompsoni), yellow perch (Perca flavescens), and burbot populations during the 1970s and 1980s. Decrease in the abundance of all three dominant benthic macroinvertebrate groups, including Diporeia, oligochaetes, and sphaeriids, during the 1980s in nearshore waters ([Formula: see text]50 m deep) of Lake Michigan, was attributable to a decrease in primary production linked to a decline in phosphorus loadings. Continued decrease in Diporeia abundance during the 1990s was associated with the zebra mussel (Dreissena polymorpha) invasion, but specific mechanisms for zebra mussels affecting Diporeia abundance remain unidentified.

Precision Micrometer Measurement of Mouth Gape of Larval Fish

1987 ◽  
Vol 44 (10) ◽  
pp. 1786-1791 ◽  
Author(s):  
Michael T. Arts ◽  
D. O. Evans
Keyword(s):  
Body Size ◽  
Yellow Perch ◽  
Larval Fish ◽  
Perca Flavescens ◽  
Data Capture ◽  
Coregonus Clupeaformis ◽  
Manual Method ◽  
Direct Data ◽  
Coregonus Artedii ◽  
Lake Herring

A precision micrometer device is described which standardizes measurement of mouth gape of larval fish and provides a greater degree of accuracy and speed than the conventional manual method. We compared gape measurements of larval lake whitefish (Coregonus clupeaformis) and lake herring (Coregonus artedii) using the gape micrometer versus the manual method. The micrometer measurements revealed a greater increase in gape with body length and resulted in a greater proportion of the variance in gape being explained, indicating that the gape micrometer is more sensitive and accurate than the manual method. Coefficient of variation of gape measurements on 238 larval yellow perch (Perca flavescens) decreased with body size from 0.5–4.0% at 0.8–1.2 cm standard length to 0.2–0.5% at 3.0 cm. The device has the added advantage that it could be adapted to connect to a microcomputer for direct data capture.

Potential Fishery for Lake Sturgeon (Acipenser fulvescens) as Indicated by the Returns of the Hudson's Bay Company Lac la Pluie District

1988 ◽  
Vol 45 (5) ◽  
pp. 921-923 ◽  
Author(s):  
Tim Holzkamm ◽  
Michael McCarthy
Keyword(s):  
Drainage Basin ◽  
Fur Trade ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Commercial Fishing ◽  
Commercial Fishery ◽  
Hudson's Bay Company ◽  
Lake Of The Woods ◽  
High Production ◽  
Hudson’S Bay Company

The isinglass returns for the Hudson's Bay Company Lac la Pluie District have been used to estimate the Ojibway harvest of lake sturgeon (Acipenser fulvescens) from 1823 to 1885. The majority of these fish were taken in the Rainy River from spawning runs originating in Lake of the Woods. American commercial fishing of sturgeon in Lake of the Woods began in 1888, with commercial operations on the Canadian side following within a few years. Initially high production levels characterize the non-Ojibway fishery for the first 20 yr, with rapid declines due to depleted sturgeon populations in the following years. Similar responses to commercial sturgeon fishing in other areas have led many to conclude that fisheries stocks could not support a significant sustained commercial fishery. In contrast, the Ojibway harvest during 63 yr of fur trade records indicates potential for a substantial sustained commercial sturgeon harvest from the Lake of the Woods basin. The same conclusion is not evident from American and Canadian records of sturgeon harvests from the same drainage basin.

Biomass, Production, and Yields of Walleye (Stizostedion vitreum vitreum) and Yellow Perch (Perca flavescens) in North American Lakes

1977 ◽  
Vol 34 (10) ◽  
pp. 1602-1612 ◽  
Author(s):  
Kenneth D. Carlander
Keyword(s):  
Biomass Production ◽  
Yellow Perch ◽  
General Trend ◽  
Perca Flavescens ◽  
Stizostedion Vitreum ◽  
Total Biomass ◽  
Small Lakes ◽  
Commercial Yield ◽  
Sport Fish ◽  
Fish Yields

Compilation of available data indicated that walleye (Stizostedion vitreum vitreum) biomass in lakes averaged 16 kg/ha, but the data were not adequate to show relationships with mean depth, alkalinity, latitude, or morphoedaphic indexes of the lakes. Yellow perch (Perca flavescens) biomass also failed to show relationships with these factors. In small lakes and ponds with only perch, biomass ranged from 39 to 215 kg/ha, but in lakes with other species, perch biomass was under 65 kg/ha. Annual production of walleye was from 1.2 to 4.1 kg∙ha−1∙yr−1 and that of yellow perch was 21.9 kg∙ha−1∙yr−1. Average commercial yields of walleye ranged up to 3.06 kg∙ha−1∙yr−1, and sport fish yields averaged 3.7 kg∙ha−1∙yr−1. Annual commercial and sport yields decreased with latitude. Area of lake was negatively correlated with sport yield, but positively with commercial yield. The latter situation is believed to be an artifact of the sample and not a general trend. Commercial yield increased with total dissolved solids of the lakes. Lack of other correlations may be related to the fact that walleye biomass and yield do not bear a constant relationship to total biomass and yield. Key words: Percidae, Stizostedion, Perca, biomass, production, yield

scholarly journals Response in Growth, Scute Development, and Whole-Body Ion Composition of Acipenser fulvescens Reared in Water of Differing Chemistries

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1419
Author(s):  
Janet Genz ◽  
Rachael Hicks
Keyword(s):  
River Water ◽  
Growth And Development ◽  
Lake Sturgeon ◽  
Whole Body ◽  
Acipenser Fulvescens ◽  
Water Type ◽  
Ion Composition ◽  
Ion Concentrations ◽  
Before And After ◽  
Yolk Absorption

In fishes, environmental ion availability can have substantial effects on growth and development. This study examined the development of Lake Sturgeon in response to the varying environmental ion availability that they experience as part of a conservation stocking program. We reared sturgeon in natural water from the Coosa River, which had higher concentrations of Mg2+, Na+, and Zn2+ than standard hatchery conditions, while [Ca2+] at the Warm Springs National Fish Hatchery was 2× higher than in the Coosa River. Eggs were hatched in each water type and the larvae were sampled at time points before and after yolk absorption during the first 8 weeks of development. Total length and weight in WSNFH larvae were significantly higher than larvae in Coosa River water starting at 8 dph, indicating that growth was dependent on the different environmental ion levels. Concentrations of the ions of interest were also determined for whole-body acid digests of the exposed Lake Sturgeon. We found that Lake Sturgeon reared in Coosa River water had significantly higher magnesium and zinc than Lake Sturgeon reared in WSNFH water (p < 0.05), while calcium was significantly higher in WSNFH than Coosa River water. This difference shows that different environmental ion concentrations also impact the overall development of larval Lake Sturgeon.

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