Reproduction et force des classes d'âge du Grand Brochet (Esox lucius L.) dans le Haut-Richelieu et la baie Missisquoi

1982 ◽  
Vol 60 (2) ◽  
pp. 227-240 ◽  
Author(s):  
Réjean Fortin ◽  
Pierre Dumont ◽  
Henri Fournier ◽  
Claude Cadieux ◽  
Diane Villeneuve
Keyword(s):  
Water Temperature ◽  
Northern Pike ◽  
Esox Lucius ◽  
Water Levels ◽  
Spawning Grounds ◽  
Egg Incubation ◽  
Egg Deposition ◽  
Air Temperatures ◽  
Incubation Periods ◽  
Class Strength

Captures of northern pike on the spawning grounds and measures of egg deposition showed that from 1975 to 1978 spawning occurred in April, after the onset of spring high waters and the warming of the water above 5–6 °C. Maximal egg deposition occurs on abandoned meadows, pastures, and shrub–grass areas, in water 60 cm or less. In the Bleury Stream area, these substrates lie mostly between elevations 30 and 30,5 m. Water temperature influences the length of the spawning and incubation periods. Spawning, egg incubation, and growth of the young to a mean length of 20 mm require approximately 40 days. From 1970 to 1977, two strong year classes (1973 and 1976) were produced; they were both followed by a weak year class. Air temperatures in June, summer water levels (June–September), and also the strength of the preceding year class, had a determining effect on year class strength.

Effects of lure type, fish size and water temperature on hooking location and bleeding in northern pike (Esox lucius) angled in the Baltic Sea

2014 ◽  
Vol 157 ◽  
pp. 164-169 ◽  
Author(s):  
M. Stålhammar ◽  
T. Fränstam ◽  
J. Lindström ◽  
J. Höjesjö ◽  
R. Arlinghaus ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Water Temperature ◽  
Northern Pike ◽  
Esox Lucius ◽  
The Baltic Sea ◽  
Fish Size ◽  
Pike Esox Lucius ◽  
The Baltic

Survie oeufs–juvéniles et force des classes d'âge des grands brochets (Esox lucius) de la rivière aux Pins, près de Montréal, Québec

1993 ◽  
Vol 71 (2) ◽  
pp. 368-375 ◽  
Author(s):  
Gérard Massé ◽  
Pierre Dumont ◽  
Réjean Fortin
Keyword(s):  
Survival Rate ◽  
Water Level ◽  
Survival Rates ◽  
Northern Pike ◽  
Esox Lucius ◽  
Level Control ◽  
Potential Fecundity ◽  
Spawning Grounds ◽  
Factors Influencing ◽  
Natural Situation

Exhaustive counts of northern pike that use the Rivière aux Pins and of 0+ juvenile pike produced in this river, based on trap net and seine catches, coupled with potential fecundity estimates, allowed survival rates of pike eggs to migrant 0+ juveniles to be evaluated in a natural situation, in 1975, and in a controlled water level situation, in 1976. In 1975, 3393 juveniles aged 0+ were produced from 9 210 900 eggs potentially deposited by 404 females, yielding a 0.037% survival rate. In 1976, 34 062 juveniles aged 0+ were produced from 8 536 800 eggs potentially deposited by 310 females, yielding a 0.399% survival rate. The higher survival rate in 1976 could have resulted from the water level control and (or) from the higher spring waters in 1976. However, 1975 and 1976 both produced strong year classes, suggesting that potential fecundity and 0+ juvenile production on the spawning grounds are not the only factors influencing recruitment in this species.

Natural recruitment, density-dependent juvenile survival, and the potential for additive effects of stock enhancement: an experimental evaluation of stocking northern pike (Esox lucius) fry

2014 ◽  
Vol 71 (10) ◽  
pp. 1508-1519 ◽  
Author(s):  
Daniel Hühn ◽  
Kay Lübke ◽  
Christian Skov ◽  
Robert Arlinghaus
Keyword(s):  
Late Summer ◽  
Northern Pike ◽  
Esox Lucius ◽  
Stock Enhancement ◽  
Partial Replacement ◽  
Additive Effects ◽  
Density Dependent ◽  
Pike Esox Lucius ◽  
Class Strength ◽  
Natural Recruitment

Density-dependent mortality in young life stages should strongly limit the potential for additive effects caused by stocking of fish sizes that are smaller than size at recruitment into the fishery. Indeed, stocking models have suggested that stocking of fry should not elevate year class strength in self-sustaining stocks. However, limited data based on replicated and controlled experiments are available to support this prediction. We performed a pond experiment (N = 4 per treatment) to compare the stock enhancing outcome of stocking hatchery-reared northern pike (Esox lucius) fry and the natural production of young in self-recruiting pike populations. We also added a treatment where pike fry were stocked into ponds that otherwise did not have pike to mimic the absence of natural recruitment. Fry stocking into self-reproducing stocks did not elevate year class strength over unstocked controls. However, in the absence of competition, year class strength of juveniles in late summer emerging from fry stocking was similar to the production of natural recruits. Overall, we demonstrated the competitive disadvantage of hatchery-reared fry when released into waters already containing natural recruits, the partial replacement of natural recruits by hatchery-reared fry, and the lack of additive effects of stock enhancement in naturally reproducing stocks. A stock-enhancing effect of pike fry stocking may only be expected in the absence of natural recruitment.

Atresia and Year-Class Abundance of Northern Pike, Esox lucius, in Two Missouri River Impoundments

1970 ◽  
Vol 27 (3) ◽  
pp. 587-591 ◽  
Author(s):  
Fred C. June
Keyword(s):  
South Dakota ◽  
Water Temperature ◽  
Missouri River ◽  
Northern Pike ◽  
Esox Lucius ◽  
Pike Esox Lucius

Widespread atresia in northern pike ovaries was associated with low year-class abundance in three successive years, 1966–68, in Lake Oahe and Lake Sharpe, South Dakota, two large Missouri River impoundments. Atresia was associated with fluctuations in water temperature and level that apparently interrupted spawning.

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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