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.

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).

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.

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.

Les métaux (Mn, Cu, Cd, Zn et Hg) des meuniers noirs (Catostomus commersoni) et des grands brochets (Esox lucius) de l'amont et de l'aval du barrage Moses-Saunders sur le fleuve Saint-Laurent près de Cornwall (Ontario) et Massena (New York)

1999 ◽  
Vol 56 (12) ◽  
pp. 2240-2247 ◽  
Author(s):  
Janick D Lalonde ◽  
François Chapleau ◽  
Anik Brind'Amour ◽  
Lara Louise Ridgway
Keyword(s):  
New York ◽  
Agricultural Land ◽  
Northern Pike ◽  
Esox Lucius ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
High Metal ◽  
The Mean ◽  
High Level ◽  
St Lawrence River

We examined the effect of a dam on concentrations of metals (Mn, Cu, Cd, Zn, and Hg) in white sucker (Catostomus commersoni) and in northern pike (Esox lucius). Fish were caught upstream and downstream of the Moses-Saunders Power dam on the St. Lawrence River near Cornwall, Ontario, and Massena, New York. Upstream of the dam, Lake St. Lawrence is a 136-km2 reservoir resulting from the flooding of 90 km2 of agricultural land in 1958, and downstream is Lake St. Francis. In northern pike, no difference in the mean concentrations of metals was found between upstream and downstream fish. Hg concentrations increased with length in upstream and downstream pike, whereas Zn showed an inverse relationship with length downstream. For a particular length, Hg concentration was higher in downstream northern pike. On average, white sucker were five times more contaminated by Hg upstream than downstream. The levels of Mn and Cu were also found to be higher upstream. No bioaccumulation of metals was observed in white sucker. Based on the results obtained for the northern pike, after 37 years, it seems that the high metal concentrations observed in Lake St. Lawrence after the creation of the reservoir have now disappeared. We believe that the high level of contamination of the white suckers in this lake is linked with this species' habit of being in constant contact with the sediments, which could be locally highly contaminated.

Catchments affect growth rate of Northern Pike, Esox lucius, in subarctic lakes

2021 ◽  
Vol 83 (3) ◽  
Author(s):  
Mehdi Moslemi-Aqdam ◽  
George Low ◽  
Mike Low ◽  
Brian A. Branfireun ◽  
Heidi K. Swanson
Keyword(s):  
Growth Rate ◽  
Northern Pike ◽  
Esox Lucius ◽  
Subarctic Lakes ◽  
Pike Esox Lucius
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