Prey Selectivity by Age 0 White Perch (Morone americana) and Yellow Perch (Perca flavescens) in Laboratory Experiments

1991 ◽  
Vol 48 (4) ◽  
pp. 607-610 ◽  
Author(s):  
Donna L. Parrish ◽  
F. Joseph Margraf
Keyword(s):  
Optimal Foraging ◽  
Yellow Perch ◽  
Lake Erie ◽  
Laboratory Experiments ◽  
White Perch ◽  
Prey Size ◽  
Perca Flavescens ◽  
Species Assemblages ◽  
Morone Americana ◽  
Prey Selectivity

We conducted prey selectivity experiments by age 0 white perch (Morone americana) and yellow perch (Perca flavescens) in the laboratory. Lake Erie zooplankters were introduced into tanks where both fishes were in single and combined species assemblages. We identified and counted the introduced plankton samples and the contents of fish stomachs after the feeding period. Our results showed no differences in prey consumed within a fish species, whether in single or combined assemblages (ANOVA, p > 0.05). There were a few differences between white perch and yellow perch consumption of each prey taxa (ANOVA); however, the arrays of organisms eaten were not different (MANOVA, p > 0.01). We note that the majority of prey consumed were smaller taxa, which is counter to optimal foraging predictions in relation to prey size, but is consistent with other research on young planktivore prey selectivities.

Effect of acute and chronic temperature transition on enzymes of cardiac metabolism in white perch (Morone americana), yellow perch (Perca flavescens), and smallmouth bass (Micropterus dolomieui)

1991 ◽  
Vol 69 (1) ◽  
pp. 258-262 ◽  
Author(s):  
Dawn H. Sephton ◽  
William R. Driedzic
Keyword(s):  
Yellow Perch ◽  
Citrate Synthase ◽  
White Perch ◽  
Perca Flavescens ◽  
Smallmouth Bass ◽  
Transferase Activity ◽  
Morone Americana ◽  
Coa Transferase ◽  
Micropterus Dolomieui ◽  
The Impact

White perch (Morone americana), yellow perch (Perca flavescens), and smallmouth bass (Micropterus dolomieui) were acclimated to 5 and 20 °C. There was an increase in ventricle mass relative to body mass in smallmouth bass only following acclimation to 5° C. Maximal in vitro activities of hexokinase, citrate synthase, carnitine acyl CoA transferase (with palmitoyl CoA, palmitoleoyl CoA, and oleoyl CoA as substrates), and total ATPase were assessed in crude heart homogenates. Tissues removed from warm-acclimated animals were tested at 20 and 5 °C; tissues removed from cold-acclimated animals were assessed at 5 °C. Acute temperature transitions were associated with decreases in the activities of hexokinase (Q10 ≈ 1.8), citrate synthase (Q10 ≈ 1.4), and ATPase (Q10 ≈ 1.7). The impact of temperature on carnitine acyl CoA transferases was generally less severe. This suggests that maximal fatty acid oxidation is conserved better than glucose oxidation during a warm to cold transition. Maximal enzyme activities were generally unaffected by the acclimation regime, with the exception of that of carnitine acyl CoA transferase in white perch heart. The substantial increase in carnitine acyl CoA transferase activity when unsaturated CoA derivatives were provided as substrate suggests an increased capacity to oxidize unsaturated fatty acids at low temperature following an acclimation period. Attempts to sustantiate this contention by offering labelled oleic acid to ventricle sheets were thwarted by a high rate of incorporation into the total lipid pool.

Behaviour, Energetics, and Associated Mortality of Young-of-the-Year White Perch (Morone americana) and Yellow Perch (Perca flavescens) under Simulated Winter Conditions

1991 ◽  
Vol 48 (4) ◽  
pp. 672-680 ◽  
Author(s):  
Timothy B. Johnson ◽  
David O. Evans
Keyword(s):  
Yellow Perch ◽  
White Perch ◽  
Perca Flavescens ◽  
Direct Consequence ◽  
Dry Weight ◽  
Routine Metabolic Rate ◽  
Winter Period ◽  
Small Fish ◽  
Morone Americana ◽  
Winter Conditions

After 150 d of simulated winter conditions, 71.2% of the white perch (Morone americana) had died at 2.5 °C, while only 11.1% had died at 4.0 °C. For yellow perch (Perca flavescens), 0.8% had died at 2.5 °C, while 17.7% had died at 4.0 °C. For both species, small fish died first. Multiple regression models relating overwinter mortality versus fall total length and winter duration predict 3.3 times greater mortality for white perch versus similar sized yellow perch at winter temperature regimes typical of the Great Lakes region. In laboratory tanks, white perch remained active throughout the winter period, while yellow perch sought cover and rested on or near the bottom of the experimental tanks. As a direct consequence, yellow perch had a lower routine metabolic rate and consumed body energy more gradually than white perch. During their inactive wintering period at 4.0 °C, yellow perch consumed 25.8% less oxygen than white perch. Actual measurements of dry weight loss indicated that yellow perch in the experimental tanks at 2.5 °C consumed 24.6% less dry weight than similar sized white perch. These differences in overwinter behaviour, metabolism, and survival appear to be adequate to account for observed differences in survival of these species in the wild.

Interactions between White Perch (Morone amerićana) and Yellow Perch (Perca flavescens) in Lake Erie as Determined from Feeding and Growth

1990 ◽  
Vol 47 (9) ◽  
pp. 1779-1787 ◽  
Author(s):  
Donna L. Parrish ◽  
F. Joseph Margraf
Keyword(s):  
Food Consumption ◽  
Yellow Perch ◽  
White Perch ◽  
Perca Flavescens ◽  
Diet Overlap ◽  
Central Basin ◽  
Morone Americana ◽  
Western Basin ◽  
Consumption Rates ◽  
Growth Differences

Since the mid-1970's, white perch Morone americana have expanded rapidly, resulting in possible major interactions with the native yellow perch Perca flavescens. We compared the food consumption rates, diet overlap, and growth of white perch and yellow perch from field data collected during 1983–85 and 1987. Food consumption rates were as much as 27% greater in white perch than in yellow perch, and were higher for both species in the central basin than in the western basin. Seasonal diet composition was most alike in summer and less so in spring and fall, when yellow perch ate more benthos or fish than did white perch. Of 48 Schoener index comparisons of diet overlap during a 3-yr period, 52% were significant (> 0.6). Although yellow perch grew faster in the central basin, reflecting the greater consumption rates, white perch did not show the similar large interbasin growth differences.

Failure to detect ecological and evolutionary effects of harvest on exploited fish populations in a managed fisheries ecosystem

2018 ◽  
Vol 75 (10) ◽  
pp. 1764-1771 ◽  
Author(s):  
Fan Zhang ◽  
Davíð Gíslason ◽  
Kevin B. Reid ◽  
Allan J. Debertin ◽  
Katrine Turgeon ◽  
...  
Keyword(s):  
Fisheries Management ◽  
Yellow Perch ◽  
Lake Erie ◽  
White Perch ◽  
Fish Populations ◽  
Morone Americana ◽  
Negative Effects ◽  
Evolutionary Mechanisms ◽  
White Bass ◽  
Morone Chrysops

Overexploitation and collapse of major fisheries raises important concerns about effects of harvest on fish populations. We tested for ecological and evolutionary mechanisms by which harvest could affect exploited fish populations in Lake Erie over the last four decades, over most of which intensive fisheries management was implemented. We did not detect evidence of long-term negative effects of harvest on yellow perch (Perca flavescens), walleye (Sander vitreus), white perch (Morone americana), or white bass (Morone chrysops) populations, either through recruitment success or through alteration of maturation schedules. Current fisheries management in Lake Erie has been relatively successful with respect to minimizing negative harvest effects, such that the dynamics of exploited fish populations in Lake Erie were more strongly affected by environment than harvest. Our study adds to the evidence that effective fisheries management is capable of rebuilding depleted fisheries and (or) maintaining healthy fisheries. Nevertheless, fisheries management needs to move beyond the ecological dimension to incorporate economic, social, and institutional aspects for society to be better assured of the sustainability of fisheries in rapidly changing ecosystems.

Synchronous changes in length at maturity across four species of Lake Erie fish with different harvest histories

2021 ◽  
Author(s):  
Davíð Gíslason ◽  
Robert L. McLaughlin ◽  
Beren W Robinson
Keyword(s):  
Yellow Perch ◽  
Lake Erie ◽  
Large Scale ◽  
White Perch ◽  
Water Levels ◽  
White Bass ◽  
Morone Chrysops ◽  
Harvest Intensity ◽  
Ecosystem Changes ◽  
Post Hoc

Decreases in size at maturation in harvested fish populations can reduce productivity and resilience. Delineating the causes for these changes in maturation is challenging. We assessed harvest and large-scale ecosystem variability as causes for changes in maturation in four Lake Erie fishes. Regulated harvests of Yellow Perch (Perca flavescens) and Walleye (Sander vitreus) are greater than unregulated harvests of White Perch (Morone americana) and White Bass (Morone chrysops). Our assessment considered cohort data from 1991-2012 for each species. We used a conceptual model of harvest-induced plasticity to show that changes in female length at 50% maturity (L50) were unrelated to harvest intensity in all species. We then demonstrated that changes in female L50 among cohorts were synchronous across species. Post-hoc analysis of variables capturing year-to-year variation in climatic and lake conditions suggested L50 was larger when water levels were near the norm for the study period and smaller at low and high levels. We conclude that changes in L50 were most strongly related to ecosystem changes unrelated to harvest intensity.

Evaluation of the human health threat associated with the hepatotoxin microcystin in the muscle and liver tissues of yellow perch (Perca flavescens)

2008 ◽  
Vol 65 (7) ◽  
pp. 1487-1497 ◽  
Author(s):  
Alan E. Wilson ◽  
Duane C. Gossiaux ◽  
Tomas O. Höök ◽  
John P. Berry ◽  
Peter F. Landrum ◽  
...  
Keyword(s):  
Human Health ◽  
Muscle Tissue ◽  
Chronic Exposure ◽  
Yellow Perch ◽  
Lake Erie ◽  
Large Scale ◽  
Perca Flavescens ◽  
Cyanobacterial Blooms ◽  
World Health ◽  
Us Epa

During the summer of 2006, the western basin of Lake Erie experienced a bloom of the toxigenic cyanobacterium Microcystis aeruginosa . Across 11 sites, intracellular, particulate-bound microcystin levels in the seston increased to levels that exceeded World Health Organization guidelines for drinking water exposure (1 µg toxin·L–1). In contrast, toxin concentrations in yellow perch ( Perca flavescens ) muscle tissue (n = 68) declined from June to August, were negatively related to algal toxin levels, and never exceeded a conservative chronic exposure concentration estimated using proposed United States Environmental Protection Agency (US EPA) guidelines. Microcystin concentrations in yellow perch liver exceeded US EPA chronic exposure guidelines, were on average 125 times higher than muscle toxin concentrations per unit dry weight, and varied little throughout the summer. With current guidelines, humans do not appear to be at risk when consuming the muscle tissue of Lake Erie yellow perch collected during large-scale cyanobacterial blooms. However, this study highlights the need for a better understanding of the trophic transfer of cyanobacterial toxins through aquatic food webs in diverse ecosystems with an emphasis on understanding if these compounds could accumulate sufficiently to affect human health.

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