Limnological Characteristics of Ontario Lakes in Relation to Associations of Walleye (Stizostedion vitreum vitreum), Northern Pike (Esox lucius), Lake Trout (Salvelinus namaycush), and Smallmouth Bass (Micropterus dolomieui)

1977 ◽  
Vol 34 (10) ◽  
pp. 1592-1601 ◽  
Author(s):  
M. G. Johnson ◽  
J. H. Leach ◽  
C. K. Minns ◽  
C. H. Olver
Keyword(s):  
Lake Trout ◽  
Climatic Factors ◽  
Low Frequency ◽  
Northern Pike ◽  
Esox Lucius ◽  
Salvelinus Namaycush ◽  
Smallmouth Bass ◽  
Stizostedion Vitreum ◽  
Pike Esox Lucius ◽  
Micropterus Dolomieui

Commonest lake types of the 15 combinations of four fish species (walleye, Stizostedion vitreum vitreum; northern pike, Esox lucius; lake trout, Salvelinus namaycush and smallmouth bass, Micropterus dolomieui) were walleye–pike (22%), pike "only" (19%), lake trout "only" (16%) and smallmouth bass "only" (10%). Lake trout–walleye and lake trout–walleye–smallmouth bass types were extremely rare. Lake depth and area were variables of greatest significance in distinguishing lake types by discriminant analysis. Climatic factors explained the general geographic distribution of smallmouth bass. Hypotheses to explain the low frequency of walleye in small lakes include possibilities of (1) low probability of successful coexistence of pike and walleye, (2) lack of wind fetch to clear spawning areas, and (3) "Lebensraum requirement" of the walleye. Key words: limnology, Percidae, methodology, Ontario lake types, Stizostedion vitreum vitreum, Esox lucius, Salvelinus namaycush, Micropterus dolomieui, distribution, associations

Optimal Use of Creel Survey Data in Assessing Population Behaviour: Lake Opeongo Lake Trout (Salvelinus namaycush) and Smallmouth Bass (Micropterus dolomieui), 1936–83

1987 ◽  
Vol 44 (S2) ◽  
pp. s229-s238 ◽  
Author(s):  
B. J. Shuter ◽  
J. E. Matuszek ◽  
H. A. Regier
Keyword(s):  
Lake Trout ◽  
Total Mortality ◽  
Salvelinus Namaycush ◽  
Fish Population ◽  
Smallmouth Bass ◽  
Fishing Mortality ◽  
Assessment Data ◽  
Creel Survey ◽  
Micropterus Dolomieui ◽  
Independent Assessment

Creel survey and independent assessment data on the lake trout (Salvelinus namaycush) and smallmouth bass (Micropterus dolomieui) populations of Lake Opeongo were evaluated. Annual estimates of total mortality, fishing mortality, and abundance were generated for each population over the period 1936–83. Large variations in survey efficiency, angler efficiency, fishing mortality, and abundance were identified over this period. We argue that a creel survey, which is expected to provide reliable information on fish population dynamics, requires an overall study design which includes collection of data on the number and relative efficiency of different kinds of anglers and periodic assessment studies aimed at providing independent checks on both survey effectiveness and population behaviour.

Walleye, Stizostedion vitreum, and northern pike, Esox lucius, populations in three Alberta lakes

1986 ◽  
Vol 29 (1) ◽  
pp. 67-85 ◽  
Author(s):  
J. F. Craig ◽  
K. Smiley
Keyword(s):  
Northern Pike ◽  
Esox Lucius ◽  
Stizostedion Vitreum ◽  
Pike Esox Lucius

Activity Periods of Some Fishes in Heming Lake, Canada

1969 ◽  
Vol 26 (12) ◽  
pp. 3266-3267 ◽  
Author(s):  
G. H. Lawler
Keyword(s):  
Northern Pike ◽  
Esox Lucius ◽  
Stizostedion Vitreum ◽  
Coregonus Clupeaformis ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Summer Period ◽  
Pike Esox Lucius

On the basis of the numbers of fish caught per unit of time in Heming Lake during a spring–summer period, the white sucker (Catostomus commersoni) was most active during daylight. The following species were most active during darkness: northern pike (Esox lucius), whitefish (Coregonus clupeaformis), and walleye (Stizostedion vitreum vitreum).

Relationship of Mercury Concentrations in Lake Trout (Salvelinus namaycush) and Smallmouth Bass (Micropterus dolomieui) to the Physical and Chemical Characteristics of Ontario Lakes

1989 ◽  
Vol 46 (3) ◽  
pp. 426-434 ◽  
Author(s):  
Michael J. McMurtry ◽  
Donna L. Wales ◽  
Wolfgang A. Scheider ◽  
Gail L. Beggs ◽  
Patricia E. Dimond
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Lake Trout ◽  
Water Hardness ◽  
Salvelinus Namaycush ◽  
Smallmouth Bass ◽  
Stepwise Multiple Regression ◽  
Lake Area ◽  
Micropterus Dolomieui ◽  
The Relationship

Concentrations of mercury in dorsal muscle tissue of lake trout (Salvelinus namaycush) from Ontario lakes were positively correlated with variables indicating lake dystrophy (dissolved organic carbon, colour, iron, transparency) and were also correlated with watershed area and lake area. Stepwise multiple regression selected dissolved organic carbon as the only variable which explained a significant amount of variation (37%) in mercury concentrations in lake trout. The relationship between dissolved organic carbon and mercury appeared to be strongest in the group of lakes with values of dissolved organic carbon less than 4.0 mg∙L−1. In contrast, mercury concentrations in smallmouth bass (Micropterus dolomieui) were correlated with variables reflecting both water hardness (magnesium, calcium, conductivity) and acidity (pH, alkalinity). The relationship was inverse for the water hardness variables and positive for acidity. Stepwise regression identified three variables significant in explaining variation in mercury in smallmouth bass: calcium, dissolved organic carbon, and latitude. Mechanisms that may explain the effects of organic matter, water hardness, and acidity on mercury accumulation by fish are discussed.

Relationships between Mercury Concentrations in Walleye (Stizostedion vitreum) and Northern Pike (Esox lucius): Implications for Modelling and Biomonitoring

1994 ◽  
Vol 51 (9) ◽  
pp. 2090-2104 ◽  
Author(s):  
J. W. Parks ◽  
P. C. Craig ◽  
G. W. Ozburn
Keyword(s):  
Aquatic Ecosystems ◽  
Northern Pike ◽  
Esox Lucius ◽  
Stizostedion Vitreum ◽  
Empirical Relationships ◽  
Site Specific ◽  
Pike Esox Lucius ◽  
Species Specific ◽  
A Site ◽  
New Reservoir

Site-specific and interlake models are developed and tested for predicting mercury levels in walleye (Stizostedion vitreum) and northern pike (Esox lucius). The models are based on empirical relationships from coexisting fish in waters impacted by atmospheric loadings, contaminated sediments, and new reservoir formations. The sizes of fish used in the model (39-cm walleye and 55-cm northern pike) are typical of those caught by sport and commercial fishermen. The relative importance of a number of environmental factors to the accumulation of mercury in coexisting populations was examined by regression of the Biotic Mercury Partitioning Index (BMPI: mercury in species 1 (39-cm walleye)/mercury in species 2 (55-cm northern pike)) on pH, alkalinity, dissolved organic carbon, and other variables that have been identified as important to the accumulation of mercury in either or both species. No species-specific differences in mercury bioavailability were identified. We postulate that development of other biotic relationships on a site-specific, watershed, or broader geographic basis will assist in attempts to model mercury in aquatic ecosystems and reduce sample requirements for biomonitoring programs.

Relation between Mercury Concentrations in Walleye (Stizostedion vitreum vitreum) and Northern Pike (Esox lucius) in Ontario Lakes and Influence of Environmental Factors

1991 ◽  
Vol 48 (1) ◽  
pp. 132-139 ◽  
Author(s):  
C. D. Wren ◽  
W. A. Scheider ◽  
D. L. Wales ◽  
B. W. Muncaster ◽  
I. M. Gray
Keyword(s):  
Environmental Factors ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Northern Pike ◽  
Esox Lucius ◽  
Stizostedion Vitreum ◽  
Pike Esox Lucius ◽  
The Mean ◽  
Highly Correlated

We examined the relation between mercury levels in walleye (Stizostedion vitreum vitreum) and northern pike (Esox lucius) in Ontario lakes. Walleye and northern pike occurred together in 79 of the 346 study lakes. The length-standardized mercury concentrations in coexisting walleye and northern pike in the 79 lakes were highly correlated (r2 = 0.60). The mean mercury concentrations in walleye and northern pike of standardized length from these lakes were 0.65 and 0.52 μg/g, respectively. Lacustrine characteristics associated with lake dystrophy (dissolved organic carbon and iron) were positively correlated with mercury levels in both species. Variables associated with acidity (pH and alkalinity) and hardness (calcium, conductivity, and magnesium) were negatively correlated with mercury concentrations in northern pike but not walleye.

STUDIES ON CESTODES OF THE GENUS TRIAENOPHORUS FROM FISH OF LESSER SLAVE LAKE, ALBERTA: I. INTRODUCTION AND THE LIFE OF TRIAENOPHORUS CRASSUS FOREL AND T. NODULOSUS (PALLAS) IN THE DEFINITIVE HOST, ESOX LUCIUS

1943 ◽  
Vol 21d (6) ◽  
pp. 160-170 ◽  
Author(s):  
Richard B. Miller
Keyword(s):  
Definitive Host ◽  
Northern Pike ◽  
Esox Lucius ◽  
Mixed Infections ◽  
Stizostedion Vitreum ◽  
Undescribed Species ◽  
Pike Esox Lucius ◽  
Progressive Degeneration

Triaenophorus crassus Forel and T. nodulosus (Pallas) occur in the intestine of the northern pike, Esox lucius. T. crassus is deeply imbedded in the gut wall of the host; T. nodulosus is but lightly attached. Pike weighing three pounds or over are more likely to be infected with the former species and smaller pike more often harbour the latter. The greatest number of mixed infections occur in pike around three pounds in weight.T. crassus liberates viable eggs into the host's intestine from the end of April to the middle of May; T. nodulosus is one month later and appears to liberate its eggs directly into the water. Pike are relatively free of T. crassus from mid-May to mid-June and of T. nodulosus in late June and early July.Data presented are interpreted as indicating that the cauda of T. crassus is produced by the progressive degeneration of the plerocercoid beginning at the posterior end.A third, apparently undescribed, species of Triaenophorus was found in the intestine of the pickerel, Stizostedion vitreum.

Vulnerability of Some Fishes to Northern Pike (Esox lucius) Predation

1971 ◽  
Vol 28 (7) ◽  
pp. 957-969 ◽  
Author(s):  
Wilbur L. Mauck ◽  
Daniel W. Coble
Keyword(s):  
Ictalurus Punctatus ◽  
Fathead Minnow ◽  
Micropterus Salmoides ◽  
Pimephales Promelas ◽  
Lepomis Macrochirus ◽  
Northern Pike ◽  
Esox Lucius ◽  
Smallmouth Bass ◽  
Pike Esox Lucius ◽  
Golden Shiner

To compare vulnerability to predation by northern pike (Esox lucius Linnaeus), several species of fish in various combinations were held with pike in plastic swimming pools with and without cover and in small ponds. The most vulnerable species in order were gizzard shad (Dorosoma cepedianum), carp (Cyprinus carpio), bigmouth buffalo (Ictiobus cyprinellus), fathead minnow (Pimephales promelas), and smallmouth bass (Micropterus dolomieui). White sucker (Catostomus commersoni), green sunfish (Lepomis cyanellus), largemouth bass (Micropterus salmoides), golden shiner (Notemigonus crysoleucas), and yellow perch (Perca flavescens) showed intermediate vulnerability. Channel catfish (Ictalurus punctatus), northern pike, bluegill (Lepomis macrochirus), and black bullhead (Ictalurus melas) were least vulnerable. In two experiments in which fish were put in cages in turbid water, relative vulnerability was the same as in clearer water. Pike could not be conditioned to eat golden shiner or bluegill. There was a tendency for certain sizes of pike to select the smaller carp, fathead minnow, and bluegill within the size ranges tested.

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