Temperature Tolerance of Young-of-the-Year Lake Whitefish, Coregonus clupeaformis

1976 ◽  
Vol 33 (1) ◽  
pp. 177-180 ◽  
Author(s):  
Thomas A. Edsall ◽  
Donald V. Rottiers
Keyword(s):  
Temperature Tolerance ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Lethal Temperature ◽  
Young Of The Year ◽  
Coregonus Artedii ◽  
Coregonus Hoyi ◽  
Lake Herring

The ultimate upper lethal temperature of young-of-the-year lake whitefish, Coregonus clupeaformis, was 26.65 C; this value is closely similar to that reported for yearling bloaters, Coregonus hoyi (26.75 C) and young-of-the-year lake herring, Coregonus artedii (26.0 C).

Temperature Tolerance of Bloater (Coregonus hoyi)

1970 ◽  
Vol 27 (11) ◽  
pp. 2047-2052 ◽  
Author(s):  
Thomas A. Edsall ◽  
Donald V. Rottiers ◽  
Edward H. Brown
Keyword(s):  
Young Adult ◽  
High Temperatures ◽  
Thermal Tolerance ◽  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Temperature Tolerance ◽  
Lethal Temperature ◽  
Lethal Temperatures ◽  
Coregonus Artedii ◽  
Coregonus Hoyi

Juvenile and young adult bloaters (Coregonus hoyi) were tested for tolerance to high temperatures. The ultimate upper lethal temperature of juvenile bloaters (26.75 C) appeared to be slightly higher than that of young adult bloaters, but was similar to that of juvenile ciscoes, Coregonus artedii (26.0 C), the only other North American coregonine for which a detailed description of temperature tolerance has been published.Regression equations are given that permit estimation of the thermal tolerance when the lethal temperatures are incompletely known. The estimated thermal tolerance of juvenile bloaters (617 units) was slightly less than that of the brook trout (Salvelinus fontinalis; 625 units), but was higher than that of other Salmonidae.

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.

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.

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.

Divergent Growth in Two Lake Whiteflsh (Coregonus clupeaformis) Populations

1973 ◽  
Vol 30 (11) ◽  
pp. 1683-1696 ◽  
Author(s):  
B. F. Bidgood
Keyword(s):  
Growth Rate ◽  
Growth Pattern ◽  
Fish Population ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Predator Prey ◽  
The Past ◽  
Population Reduction ◽  
Young Of The Year ◽  
Stable Growth

Divergence in the growth pattern of Pigeon Lake and Buck Lake whiteflsh (Coregonus clupeaformis) began during the winter months in young-of-the-year fish. The growth rate of individuals in the Pigeon Lake whitefish population has declined over the past 12 years whereas individuals in the Buck Lake population have maintained a relatively stable growth pattern. These differences did not appear to be genetically controlled. Increased interspecific and intraspecific competition for the available food supply likely suppressed the growth rate of the Pigeon Lake whitefish population. Reduction of predator numbers in Pigeon Lake by the removal of habitat and increased angling pressure accelerated recruitment to both the white-fish population and other competitive feeding forage fish. A predator–prey relationship conducive to the maintenance of a faster growing lake whitefish population has been maintained in Buck Lake over the same period of time.

Annulus Formation on Scales of Four Species of Coregonids Reared Under Artificial Conditions

1968 ◽  
Vol 25 (10) ◽  
pp. 2111-2122 ◽  
Author(s):  
Walter J. Hogman
Keyword(s):  
Growth Rate ◽  
Metabolic Activity ◽  
Day Length ◽  
Lake Whitefish ◽  
Annulus Formation ◽  
Young Of The Year ◽  
Almost All ◽  
Coregonus Hoyi

Scales from known-age coregonids reared in the laboratory were examined to determine when annuli formed and to learn possible factors of their formation. Scales were taken monthly from marked fish for periods up to 21 months. Scales were also examined from fish that died and from preserved specimens of young-of-the-year for each species. Two marks formed on almost all scales each calender year. The stronger formed during March–April and the weaker in October–November. Both marks had all the usual characteristics of an annulus but the spring mark was considered the annulus and the fall mark an accessory check. The annulus formed during a period of constant temperatures and of little change in growth or increasing growth. The accessory check formed during a period of declining temperatures (1–5 degrees F, or 0.6–2.8 degrees C, per month) and of little change in growth or declining growth. Most fish grew throughout the winter; the only exceptions were one bloater (Coregonus hoyi) and several of the largest lake whitefish (C. clupeaformis). Fish were always given all the food they would eat to eliminate availability of food as a factor of mark formation. The temperature of the water during the winter (50 ± 0.3 F; 10.0 ± 0.2 C) did not arrest metabolic activity. The growth rate was related more closely to day length than to other variables examined.

Changes in the Multispecies, Winter Angling Fishery of Lake Simcoe, Ontario, 1961–83: Invasion by Rainbow Smelt, Osmerus mordax, and the Roles of Intra- and Interspecific Interactions

1987 ◽  
Vol 44 (S2) ◽  
pp. s182-s197 ◽  
Author(s):  
David O. Evans ◽  
Peter Waring
Keyword(s):  
Yellow Perch ◽  
Lake Trout ◽  
Interspecific Interactions ◽  
Major Influence ◽  
Osmerus Mordax ◽  
Lake Whitefish ◽  
Rainbow Smelt ◽  
Lake Simcoe ◽  
Young Of The Year ◽  
Lake Herring

Winter creel surveys revealed major changes in the abundance of five fish species (lake trout, Salvelinus namaycush, lake whitefish, Coregonus clupeaformis, lake herring, Coregonus artedii, yellow perch, Perca flavescens, and rainbow smelt, Osmerus mordax) in Lake Simcoe (1961–83). Variations in abundance were in part caused by intra- and interspecific factors. Catches in alternate years for both lake herring and rainbow smelt were inversely correlated, suggesting negative interactions between their young-of-the-year and yearlings. Similarly an inverse relation between parental stock size and recruitment explained a significant component of the catch variation of lake herring and yellow perch. Natural recruitment of lake trout declined during the 1950s (associated with eutrophication effects), and in the early 1960s, rainbow smelt invaded the fake. Lake whitefish abundance declined in the early 1970s as smelt abundance increased; the decline in whitefish recruitment was probably caused by interaction between smelt and whitefish young-of-the-year. Catches of yellow perch were positively correlated with rainbow smelt and negatively correlated with lake whitefish. Lake herring also increased when lake whitefish density was low. Increased abundance of lake trout after 1975 (due to stocking) appears to have resulted in lower densities of lake herring, rainbow smelt, and yellow perch and the reestablishment of lake whitefish recruitment at a low level. These results suggest that a large predator (lake trout) can have a major influence on the structure of a fish community, by direct and indirect effects.

Sign in / Sign up

Export Citation Format

Share Document