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).

Postmortem Changes in the Glycogen Phosphorylase Activity of the Muscle of White Sucker (Catostomus commersoni) and Northern Pike (Esox lucius)

1971 ◽  
Vol 28 (9) ◽  
pp. 1325-1326 ◽  
Author(s):  
S. V. Manohar ◽  
Helen Boese
Keyword(s):  
Glycogen Phosphorylase ◽  
Northern Pike ◽  
Esox Lucius ◽  
Postmortem Changes ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Phosphorylase Activity ◽  
Pike Esox Lucius ◽  
Glycogen Phosphorylase Activity

Glycogen phosphorylase "a" activity in the muscle of northern pike (Esox lucius) decreased during 7 days of storage at 0 C. Under similar conditions, activity of this enzyme increased in the muscle of white sucker (Catostomus commersoni). The total amount of phosphorylase "a" + phosphorylase "b" remained constant during storage for 7 days in both species. The reduced phosphorylase "a" activity in pike muscle may explain the slow degradation of glycogen in the muscle of this fish during storage as compared to that in white sucker.

scholarly journals Use of portable ultrasonography to determine ovary size and fecundity non-lethally in northern pike (Esox lucius) and white sucker (Catostomus commersoni)

2011 ◽  
Vol 46 (1) ◽  
pp. 43-51 ◽  
Author(s):  
Bryan J. Macbeth ◽  
Hershel D. Frimer ◽  
Jorgelina R. Muscatello ◽  
David M. Janz
Keyword(s):  
Gonadosomatic Index ◽  
Northern Pike ◽  
Esox Lucius ◽  
Ultrasound Images ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Cross Sectional ◽  
Pike Esox Lucius ◽  
Ovary Weight ◽  
Portable Ultrasonography

The objective of this study was to investigate the feasibility of using field-based portable ultrasonography to accurately estimate ovary weight, gonadosomatic index (GSI) and fecundity in large-bodied fish species. These reproductive endpoints were estimated using ultrasound on prespawning female northern pike (Esox lucius) and white sucker (Catostomus commersoni) and compared with actual measured values determined post mortem. Using five cross-sectional ultrasound images in pike, estimated ovary weight and fecundity, but not GSI, were significantly correlated with measured values. All endpoints were overestimated by 21 to 23% using ultrasound in pike. In a subsequent experiment using 20 cross-sectional ovary images, estimated ovary weight, GSI and fecundity were significantly correlated with measured values in white sucker. Although underestimated by 5 to 12% using 20 cross-sectional images, there were no statistical differences among estimated and measured mean ovary weight, GSI and fecundity in white sucker using this approach. Based on the variances for GSI estimations in both species, power analysis indicated that the ultrasound technique could detect a 25% change in GSI using sample sizes of <20 fish. This study illustrates the utility of portable ultrasonography as a promising non-lethal technique for assessing reproductive endpoints in the field.

An Examination of Cd, Cu, and Hg Concentrations in Livers of Northern Pike, Esox lucius, and White Sucker, Catostomus commersoni, from Five Lakes near a Base Metal Smelter at Flin Flon, Manitoba

1980 ◽  
Vol 37 (10) ◽  
pp. 1573-1578 ◽  
Author(s):  
G. A. McFarlane ◽  
W. G. Franzin
Keyword(s):  
Base Metal ◽  
Northern Pike ◽  
Esox Lucius ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Degree Of Contamination ◽  
Pike Esox Lucius ◽  
Flin Flon ◽  
Lake Waters ◽  
Metal Smelter

Concentrations of Cd, Cu, and Hg were examined in livers of northern pike (Esox lucius) and white sucker (Catostomus commersoni) from five lakes in the vicinity of, and receiving metal fallout from, a base metal smelter complex at Flin Flon, Manitoba. Concentrations of Cd in livers increased with increasing age in both species. Concentrations of Cu and Hg increased with age only in pike livers. The relationships of metal concentration to fish age were not consistent with the degree of contamination in lakes. Ca concentration of lake waters appeared to affect liver metal concentrations.Key words: Ca, Zn, Cu, Cd, Hg, white suckers, northern pike, bioaccumulation, smelter fallout.

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

Postmortem Glycolytic and Other Biochemical Changes in White Muscle of White Sucker (Catostomus commersoni) and Northern Pike (Esox lucius) at 0 C

1970 ◽  
Vol 27 (11) ◽  
pp. 1997-2002 ◽  
Author(s):  
S. V. Manohar
Keyword(s):  
Muscle Glycogen ◽  
White Muscle ◽  
Glycogen Content ◽  
Northern Pike ◽  
Esox Lucius ◽  
Biochemical Changes ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Anterior Portion ◽  
Posterior Portion

Postmortem biochemical changes in the white muscle of white sucker and of northern pike were, in general, similar to those observed in other species as reported previously by other investigators. However, glycogen content of pike was found to remain relatively high even after 7 days of storage in ice. This is in contrast to the findings with several other species, including white sucker, where the muscle glycogen is practically completely degraded in 3–4 days. Higher glycogen content in the posterior portion of pike muscle as compared with that in the anterior portion may partly explain the apparent high glycogen content in the muscle of this fish after several days of storage.

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
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