Metabolic Changes during the Reproductive Migration of Two Sympatric Coregonines, Coregonus artedii and Coregonus clupeaformis

1986 ◽  
Vol 43 (10) ◽  
pp. 1859-1865 ◽  
Author(s):  
Helga Guderley ◽  
Pierre Blier ◽  
Lorraine Richard
Keyword(s):  
White Muscle ◽  
Upstream Migration ◽  
Coregonus Clupeaformis ◽  
James Bay ◽  
Glycolytic Potential ◽  
Fructose 1,6 Bisphosphatase ◽  
Glutamate Pyruvate ◽  
Metabolic Organization ◽  
Coregonus Artedii ◽  
Reproductive Migration

The reproductive migration from James Bay to the Eastmain River leads to more marked changes in the metabolic organization of the swimming muscle of Coregonus artedii than Coregonus clupeaformis. The glycolytic potential of both red and white muscle decreased significantly during the migration while the aerobic potential increased significantly at the end of the migration in white muscle of C. artedii. This increase in aerobic potential could facilitate the upstream migration of this species. In contrast, C. clupeaformis generally maintained its glycolytic capacity in both red and white muscle and did not increase the aerobic potential of its white muscle at the end of the migration. In both species, hepatic enzyme activities were variable. In liver of C. artedii the gluconeogenic potential, as judged by the ratio of fructose 1,6-bisphosphatase to phosphofructokinase 1 activity, and the transaminases glutamate-pyruvate aminotransferase and glutamate-oxaloacetate aminotransferase, increased during the spawning migration. ¡n C. clupeaformis liver, most enzymes decreased significantly during the migration.

Genetics of Glycerol-3-phosphate Dehydrogenase Isozymes in White Muscle of Lake Whitefish (Coregonus clupeaformis)

1973 ◽  
Vol 30 (2) ◽  
pp. 187-193 ◽  
Author(s):  
J. W. Clayton ◽  
W. G. Franzin ◽  
D. N. Tretiak
Keyword(s):  
White Muscle ◽  
Natural Populations ◽  
Heat Inactivation ◽  
Starch Gel Electrophoresis ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Red Muscle ◽  
Catalytically Active ◽  
Coregonus Artedii ◽  
Glycerol 3 Phosphate Dehydrogenase

Multiple isozymes of glycerol-3-phosphate dehydrogenase (L-gIycerol-3-phosphate: NAD oxidoreductase, E. C. 1.1.1.8) have been resolved by starch gel electrophoresis of extracts of muscle tissue from lake whitefish (Coregonus clupeaformis). The isozyme electropherograms show that three kinds of subunit, A, B, and C, are synthesized in red muscle and two of these, A and B, are also found in white muscle. In red muscle the subunits evidently combine to form catalytically active dimers of the following types: AA, AB, BB, BC, and CC. In white muscle only the AA, AB, and BB dimers were observed.A genetic and molecular structure model is proposed for the glycerol-3-phosphate dehydrogenase (G-3-PDH) isozymes in white muscle of lake whitefish. On the basis of two alleles for A subunits and three alleles for B subunits, the model predicts a total of 18 distinct, electrophoretic G-3-PDH phenotypes for all possible AA, AB, and BB dimeric isozymes. The model has been confirmed by the results of a breeding experiment that tested the heritability of each of the five known alleles. A difference in the rate of heat inactivation of AA and BB isozymes was also interpreted as additional evidence for the unique genetic and molecular nature of the two kinds of subunits.Surveys of natural populations of lake whitefish revealed some marked variations in the frequencies of G-3-PDH alleles in fish from different geographical areas.The cisco (Coregonus artedii) also appears to have three "b" alleles for G-3-PDH.

Metabolic organization in swimming muscle of anadromous coregonines from James and Hudson bays

1990 ◽  
Vol 68 (7) ◽  
pp. 1552-1558 ◽  
Author(s):  
Patrice Couture ◽  
Helga Guderley
Keyword(s):  
Aerobic Capacity ◽  
Thermal Regime ◽  
Small Proportion ◽  
Enzyme Activities ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Scaling Effects ◽  
Red Muscle ◽  
Metabolic Organization ◽  
Coregonus Artedii

The metabolic organization of swimming muscles from anadromous cisco (Coregonus artedii) and lake whitefish (Coregonus clupeaformis) sampled in two rivers presenting different regimes of migratory difficulty and temperature was compared. Cisco muscle showed an increased aerobic capacity in the river where the fishes' migration is longer, as shown by the activities of several enzymes and by the proportion of red muscle in their swimming muscle. Lake whitefish, generally larger than cisco, did not show any compensation for the difficulty of migration. For both species, latitudinal differences in thermal regime were not correlated with differences in aerobic capacity. As estimated from published allometric equations, scaling effects can account for only a small proportion of the interstation variation in the aerobic enzyme activities of cisco. Our results suggest that because cisco are smaller than lake whitefish in these rivers, and thus are more affected by the degree of difficulty of the prereproductive migration at a given temperature, cisco have compensated by increasing the aerobic capacity of their swimming musculature in populations facing greater swimming requirements.

Changes in fish populations affected by the construction of the La Grande complex (Phase I), James Bay region, Quebec

1995 ◽  
Vol 73 (10) ◽  
pp. 1860-1877 ◽  
Author(s):  
Jean-Claude DesLandes ◽  
Sylvie Guénette ◽  
Yves Prairie ◽  
Réjean Fortin ◽  
Dominique Roy ◽  
...  
Keyword(s):  
Lake Trout ◽  
Salvelinus Namaycush ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Time Intervals ◽  
Complex Phase ◽  
Coregonus Artedii ◽  
Secondary Productivity ◽  
Longnose Sucker ◽  
The Impact

Catches per unit of effort (CPUE) with experimental gill nets, recruitment, growth, and condition were monitored between 1977 and 1992 to evaluate the impact of impoundment on the main fish species of La Grande 2, Opinaca, and Caniapiscau reservoirs and the Boyd–Sakami diversion. CPUE and recruitment of northern pike (Esox lucius) and lake whitefish (Coregonus clupeaformis) increased markedly at most stations after impoundment and decreased at the end of the series. The lake whitefish and cisco (Coregonus artedii) showed their most striking rise in CPUE at two bay stations of La Grande 2 and Opinaca reservoirs. CPUE and recruitment of the longnose sucker (Catostomus catostomus), white sucker (Catostomus commersoni), and lake trout (Salvelinus namaycush) (Caniapiscau) showed a general decrease following impoundment. CPUE for the walleye (Stizostedion vitreum) also decreased at several stations; however, the two most southerly stations in La Grande 2 reservoir and the Boyd–Sakami station showed high CPUE during the series. Concentration–redistribution phenomena explain part of the observed variations in CPUE. Correlation analyses showed that walleyes and white suckers were attracted to the warmer, more turbid stations, and that the high primary and secondary productivity of bay stations attracted the coregonines. Growth and condition of the main species increased during variable time intervals after impoundment and decreased at the end of the series.

Mercury Concentration of White Muscle in Relation to Age, Growth, and Condition in Four Species of Fishes from Clay Lake, Ontario

1974 ◽  
Vol 31 (11) ◽  
pp. 1723-1729 ◽  
Author(s):  
D. P. Scott
Keyword(s):  
Mercury Concentration ◽  
White Muscle ◽  
Species Differences ◽  
Lake Ontario ◽  
Age And Growth ◽  
Coregonus Clupeaformis ◽  
Catostomus Commersoni ◽  
First Order ◽  
Species Area ◽  
Statistical Relationships

Studies of large (about 125) samples of walleye (Stizostedion vitreum), northern pike (Esox lucius), white sucker (Catostomus commersoni), and lake whitefish (Coregonus clupeaformis) from each of four areas of Clay Lake, Ontario, a highly mercury-contaminated lake, have confirmed previous findings that the larger the fish, the greater the white muscle mercury concentration, within species, within populations. This relationship was statistically broken into separate age:concentration and growth:concentration partial regressions; older fish and faster growing fish were generally more contaminated, subject to the above species–area restrictions. However, the generally positive correlation between concentration and condition (as measured by relative heaviness of individuals within area–species samples) found in the previous study is here contradicted; relatively heavier fish tended to have lower Hg concentrations. Despite the relatively small size of the lake (about 11 × 2 km) analyses of multiple covariance indicated profound within-species differences between the samples from the four areas. However, there did not appear to be any obvious correlation between these differences and sediment mercury values.The various statistical relationships do not appear to be simple, first-order regressions; rather, there appear to be significant interactions between age and growth, and age and condition, which tend to change the partial slopes with age. The four species were distinctly different in most of their relationships.

Long-Term Effects of Diet on the Biology of the Lake Trout and the Fishery in Lake Opeongo, Ontario

1970 ◽  
Vol 27 (1) ◽  
pp. 125-146 ◽  
Author(s):  
N. V. Martin
Keyword(s):  
Lake Trout ◽  
Feeding Activity ◽  
Salvelinus Namaycush ◽  
Point Of View ◽  
Average Weight ◽  
Coregonus Clupeaformis ◽  
Long Term Effects ◽  
Food Content ◽  
Coregonus Artedii

From 1936 to 1965 food content was examined in 17,171 Lake Opeongo lake trout (Salvelinus namaycush). The diet is analysed from the point of view of frequency of occurrence of foods, their weight, feeding activity of trout, size of trout and size of food, and seasonal and annual changes in food habits.In the late 1940's and early 1950's perch, Perca flavescens, largely disappeared from the diet. The lake trout initially turned to lake whitefish, Coregonus clupeaformis, and then to the cisco, Coregonus artedii, introduced into Lake Opeongo in 1948.As a result of these dietary changes lake trout are now heavier and rate of growth has improved. Age and size at maturity is later and there are fewer infertile fish. Egg counts, egg size, and ovary weights are now greater, particularly in the medium-sized lake trout.In the fishery the average weight of individual trout taken has almost doubled. About 25% more of the immature stock is exploited by the recent fishery. The harvest and catchability of lake trout has remained generally constant on a numerical basis but show an improvement on a poundage basis in the more recent years. The possible effects of these changes on the character of the fishery are discussed.

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.

Influence of Water Level Drawdown on the Fish Populations of Cross Lake, Manitoba

1984 ◽  
Vol 41 (1) ◽  
pp. 118-125 ◽  
Author(s):  
M. N. Gaboury ◽  
J. W. Patalas
Keyword(s):  
Water Level ◽  
Hatching Success ◽  
Northern Pike ◽  
Water Levels ◽  
Coregonus Clupeaformis ◽  
Spawning Areas ◽  
Influence Of Water ◽  
Coregonus Artedii ◽  
Water Volumes ◽  
Coregonid Fishes

Regulated discharges into Cross Lake, Manitoba, resulted in average summer water volumes in 1980 and 1981 that were 49% lower than preregulated volumes. Water level drawdown in the summer reduces the amount of available habitat. Consequently, the standing crops of lake whitefish (Coregonus clupeaformis), walleye (Stizostedion vitreum vitreum), northern pike (Esox lucius), and Cisco (Coregonus artedii) are lower now than in preregulation and early postregulation years. Unusually early and rapid drawdown in March 1981 resulted in a severe winterkill, causing a substantial decrease in catches per unit of effort (CPUE) for most species from 1980 to 1981. The most affected species were whitefish and cisco, which showed a 50% reduction in CPUE from 1980 to 1981. The amount of fall to late spring drawdown and the year-class strengths of coregonid fishes were inversely related. A marked overwinter drawdown reduces whitefish and cisco hatching success apparently by dewatering their spawning areas and desiccating the eggs. Low water levels in spring prevented pike and walleye access to spawning areas.

Identification of Diphyllobothrium dendriticum and Diphyllobothrium latum from some freshwater fishes of central Canada

1985 ◽  
Vol 63 (1) ◽  
pp. 196-201 ◽  
Author(s):  
T. A. Dick ◽  
B. C. Poole
Keyword(s):  
Seminal Vesicle ◽  
Northern Pike ◽  
Larus Argentatus ◽  
Coregonus Clupeaformis ◽  
Neck Length ◽  
Herring Gulls ◽  
Diphyllobothrium Dendriticum ◽  
Central Canada ◽  
Coregonus Artedii ◽  
Diphyllobothrium Latum

Two species of Diphyllobothrium occurred in Quigly Lake, Manitoba: plerocercoids of D. dendriticum encapsulated on the viscera of shallow water cisco (Coregonus artedii) and lake whitefish (Coregonus clupeaformis) and plerocercoids of D. latum unencapsulated in the muscle of walleye (Stizostedion vitreum vitreum) and northern pike (Esox lucius). Adult D. dendriticum were obtained through experimental infections of both herring gulls (Larus argentatus) and hamsters (Mesocricetus auratus), but adult D. latum developed experimentally only in the latter. The scolex position of adult D. dendriticum was more anterior than D. latum in the small intestine of hamsters. Eggs were present in utero and in the faeces by days 10–11 postinfection (PI) for D. dendriticum in hamsters and gulls and by day 17 PI for D. latum in hamsters. Adult D. dendriticum grew longer and had more segments in gulls than in hamsters. The neck length of adult D. latum was at least five times greater than the neck length of adult D. dendriticum in hamsters by day 17 PI. Viewed laterally, the seminal vesicle in adult D. dendriticum was dorsal to the cirrus sac, while in D. latum, the seminal vesicle was dorsocaudal to the cirrus sac. A constriction between segments was noted for adult D. latum only.

Genetics of Multiple Lactate Dehydrogenase Isozymes in Muscle Tissue of Lake Whitefish (Coregonus clupeaformis)

1970 ◽  
Vol 27 (6) ◽  
pp. 1115-1121 ◽  
Author(s):  
J. W. Clayton ◽  
W. G. Franzin
Keyword(s):  
Lactate Dehydrogenase ◽  
Lateral Line ◽  
White Muscle ◽  
Heart Tissue ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Lactate Dehydrogenase Isozymes ◽  
Tissue Extracts ◽  
Fish Breeding ◽  
Ldh Isozymes

Electrophoresis of extracts of red lateral line muscle from lake whitefish (Coregonus clupeaformis) revealed two groups of lactate dehydrogenase (LDH) isozymes. In heart tissue extracts the faster moving set of isozymes predominated whereas most of the LDH in white muscle consisted of the slower set of electrophoretic isozymes.Three phenotypes of heart-type LDH isozymes were found in wild fish. Breeding experiments showed that there were two nondominant alleles at the locus coding the most anodal of the heart-type LDH subunits. The frequencies of these alleles were different in fish from two lakes.Our observations regarding the presence of discrete sets of multiple LDH isozymes in lake whitefish and the independent genetic control of isozymes within each set provide additional evidence for the probable tetraploid nature of salmonids.

Lake Superior Revisited 1984

1987 ◽  
Vol 44 (S2) ◽  
pp. s23-s36 ◽  
Author(s):  
Wayne R. MacCallum ◽  
James H. Selgeby
Keyword(s):  
Fish Community ◽  
Lake Trout ◽  
Pacific Salmon ◽  
Lake Superior ◽  
Sea Lamprey ◽  
Osmerus Mordax ◽  
Coregonus Clupeaformis ◽  
Rainbow Smelt ◽  
Coregonus Artedii ◽  
Historical Levels

The Lake Superior fish community has changed substantially since the early 1960s, when control of the sea lamprey (Petromyzon marinus) became effective. Self-reproducing stocks of lake trout (Salvelinus namaycush) have been reestablished in many inshore areas, although they have not yet reached pre-sea lamprey abundance; offshore lake trout are probably at or near pre-sea lamprey abundance. Stocks of lake whitefish (Coregonus clupeaformis) appear to have fully recovered; commercial catches are at or above historical levels. Lake herring (Coregonus artedii) are recovering rapidly in U.S. waters and are abundant in western Canadian waters. The population of rainbow smelt (Osmerus mordax), which declined in the 1970s, is recovering. Pacific salmon (Oncorhynchus) are becoming more abundant as a result of increased stocking in U.S. waters and are reproducing in most suitable tributaries; they have become significant in anglers' creels.

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