Diel Activity Pattern and Swimming Speeds of Northern Pike (Esox lucius) in Lac Ste. Anne, Alberta

1980 ◽  
Vol 37 (9) ◽  
pp. 1454-1458 ◽  
Author(s):  
James S. Diana
Keyword(s):  
Key Words ◽  
Activity Pattern ◽  
Northern Pike ◽  
Esox Lucius ◽  
Diel Activity ◽  
Seasonal Activity ◽  
Diel Changes ◽  
Pike Esox Lucius ◽  
Diel Activity Pattern ◽  
Ultrasonic Transmitters

Movements of six northern pike (Esox lucius) were monitored for 5 to 51 days by ultrasonic transmitters implanted surgically. The pike were inactive during 80% of the eight hundred and eighty-nine 5-min intervals monitored during summer and winter. No regular diel changes in activity were noted, except that pike were inactive at night. Swimming velocities calculated from gross displacements were maximum, 42 cm/s (0.91 body lengths (BL)/s); average, 23.1 cm/s (0.45 BL/s).Key words: movements, diel activity, seasonal activity, northern pike, Esox lucius; swimming speeds

Assimilation Efficiency of Dietary Methylmercury by Northern Pike (Esox lucius)

1979 ◽  
Vol 36 (12) ◽  
pp. 1516-1519 ◽  
Author(s):  
G. R. Phillips ◽  
R. W. Gregory
Keyword(s):  
Key Words ◽  
Cyprinus Carpio ◽  
Assimilation Efficiency ◽  
Northern Pike ◽  
Esox Lucius ◽  
Forage Fish ◽  
Pike Esox Lucius ◽  
Mercury Compounds ◽  
Carp Cyprinus Carpio ◽  
Young Of The Year

Northern pike (Esox lucius) retained an average of 19% (range 6–31%) of the methylmercury which they ingested during consumption of young-of-the-year carp (Cyprinus carpio) collected from a pond; carp accumulated methylmercury naturally while in the pond. The total amount of mercury in pike increased with time (up to 42 d) but concentration in the tissue decreased due to growth dilution; duration of ingestion did not influence efficiency of methylmercury assimilation. This value (19%) is considerably lower than most efficiencies reported in the literature, demonstrating that methylmercury in this forage fish is less readily available to a predator fish than previous studies implied. Key words: bioaccumulation, mercury compounds, predators, Esocidae

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

Temporal change estimation of mercury concentrations in northern pike (Esox lucius L.) in Swedish lakes

Chemosphere ◽  
2012 ◽  
Vol 86 (5) ◽  
pp. 439-445 ◽  
Author(s):  
Staffan Åkerblom ◽  
Mats Nilsson ◽  
Jun Yu ◽  
Bo Ranneby ◽  
Kjell Johansson
Keyword(s):  
Temporal Change ◽  
Northern Pike ◽  
Esox Lucius ◽  
Pike Esox Lucius

Effects of Liming on the Distribution of Cadmium in Water, Sediment, and Organisms in a Swedish Lake

1988 ◽  
Vol 45 (7) ◽  
pp. 1154-1162 ◽  
Author(s):  
Paul Andersson ◽  
Hans Borg
Keyword(s):  
Lake Water ◽  
Cadmium Concentration ◽  
Northern Pike ◽  
Esox Lucius ◽  
Suspended Particles ◽  
Fish Liver ◽  
Free Swimming ◽  
Pike Esox Lucius ◽  
Insect Larva ◽  
Before And After

We studied the cadmium concentrations in water, sediment, suspended particles, a free-swimming insect larva (Chaoborus), a sediment-bound insect larva (Chironomus), and liver of northern pike (Esox lucius) before and after liming operations in Lake Långsjön, Sweden. In accordance with the higher pH levels obtained in the lake water after the limings, cadmium concentration decreased in the water but increased in the sediment. Cadmium concentration in fish liver and Chironomus decreased after the limings whereas the concentration in Chaoborus larvae increased after the first liming. Possible mechanisms are discussed.

scholarly journals Nocturnal and diurnal activity of armored suckermouth catfish (Loricariidae: Pterygoplichthys) associated with wintering Florida manatees (Trichechus manatus latirostris)

2010 ◽  
Vol 8 (4) ◽  
pp. 893-898 ◽  
Author(s):  
Leo G. Nico
Keyword(s):  
River Basin ◽  
Activity Pattern ◽  
Diel Activity ◽  
Diurnal Activity ◽  
Trichechus Manatus ◽  
Trichechus Manatus Latirostris ◽  
Size Classes ◽  
Diel Activity Pattern ◽  
Spring System ◽  
Diel Period

Several Pterygoplichthys species, members of the Neotropical catfish family Loricariidae, have been widely introduced outside their native ranges. In this paper, I present observations on the diel activity pattern of non-native Pterygoplichthys, tentatively identified as P. disjunctivus, with respect to their attachment and grazing on endangered Florida manatees, Trichechus manatus latirostris. The study was conducted in December 2009 at Volusia Blue Spring, an artesianal spring system in the St. Johns River basin, Florida (USA). Supplemented by information gathered during previous visits to the spring site, this study revealed that adult Pterygoplichthys are active throughout the diel period (day, twilight and night). However, juvenile Pterygoplichthys were largely nocturnal and only at night did they consistently join adults in attaching to manatees. The juveniles generally remain hidden during the day, probably responding to presence of diurnal predators, mainly birds. Differences in diel behaviors among different Pterygoplichthys size classes in Florida are consistent with published observations on loricariids inhabiting clearwater streams within their native ranges.

Individual specialization and trophic adaptability of northern pike ( Esox lucius ): an isotope and dietary analysis

Oecologia ◽  
1999 ◽  
Vol 120 (3) ◽  
pp. 386-396 ◽  
Author(s):  
Catherine P. Beaudoin ◽  
William M. Tonn ◽  
Ellie E. Prepas ◽  
Leonard I. Wassenaar
Keyword(s):  
Northern Pike ◽  
Esox Lucius ◽  
Dietary Analysis ◽  
Individual Specialization ◽  
Pike Esox Lucius
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