The English–Wabigoon River System: IV. Interaction between Mercury and Selenium Accumulated from Waterborne and Dietary Sources by Northern Pike (Esox lucius)

1983 ◽  
Vol 40 (12) ◽  
pp. 2241-2250 ◽  
Author(s):  
Michael A. Turner ◽  
Alison L. Swick
Keyword(s):  
Aquatic Ecosystems ◽  
Yellow Perch ◽  
Body Burden ◽  
Northern Pike ◽  
Esox Lucius ◽  
The Body ◽  
Mercury Accumulation ◽  
Water Control ◽  
Pike Esox Lucius ◽  
Mercury Intoxication

Although selenium is a pollutant released by several industries, it is also an essential nutrient that protects mammals against mercury intoxication. When added to aquatic ecosystems, selenium is bioaccumulated readily and can reduce mercury accumulation in some biota. Using a predator–prey experimental model, we investigated both the route of selenium uptake and the mechanism of reduction in mercury accumulation. Young northern pike (Esox lucius) and yellow perch (Perca flavescens) were caged in situ in mercury-contaminated Clay Lake, northwestern Ontario. Pike were held in water containing trace (< 0.2 μg Se/L) or elevated (4.5–6.4 μg Se/L) concentrations of selenium and were able to accumulate 203Hg and 75Se from food (yellow perch) only, water only, or from food and water. Control pike accumulated as much as 20 times more 73Se from food than from water, assimilating ~30% of selenium in food. With increased levels of selenium in water (around 5 μg Se/L), food and water were of similar importance as sources. Waterborne selenium did not alter either the amount of 203Hg accumulated from water or its subsequent partitioning among the pike tissues sampled. When elevated in food, selenium decreased both the body burden of 203Hg in pike and the proportion in muscle. It is inferred that selenium added to aquatic ecosystems, and incorporated subsequently in the food web, would interfere with biomagnification of mercury. Furthermore, future studies of selenium toxicity in fish should emphasize its accumulation from food.

Timing and Magnitude of Energy Deposition and Loss in the Body, Liver, and Gonads of Northern Pike (Esox lucius)

1979 ◽  
Vol 36 (5) ◽  
pp. 481-487 ◽  
Author(s):  
James S. Diana ◽  
W. C. Mackay
Keyword(s):  
Somatic Growth ◽  
Northern Pike ◽  
Esox Lucius ◽  
The Body ◽  
Total Production ◽  
Spawning Period ◽  
Pike Esox Lucius ◽  
Testicular Growth ◽  
Gonad Growth ◽  
Somatic Energy

Northern pike (Esox lucius) were sampled periodically from Lac Ste. Anne, Alberta, between March 1976 and September 1978. The yearly cycle of production and depletion was determined for individual 3-yr-old fish. Body growth in length was similar for both sexes, and occurred during the summer. Somatic caloric growth was completed during the summer by females, while male somatic growth continued over winter. Gonad growth began in August; testicular growth was completed by September while ovarian growth occurred mainly during winter. There was no loss of somatic energy during ovary growth. Energy requirements for testicular growth appeared to come from liver stores. Both sexes lost considerable somatic energy between March and May, the spawning period; this loss appeared to be due to spawning activity and not late gonad growth. Young-of-year fish did not mature sexually and all of their energy accumulation went into somatic tissue. Total production in females from May to March was twice as high as production in males. Both sexes had similar yearly somatic production, while females had approximately 15 fold higher gonadal production than males. Key words: calories, growth, liver, gonad, somatic, Esox lucius, production, spawning depletion

Accumulation of Silver in Yellow Perch (Perca flavescens) and Northern Pike (Esox lucius) From a Lake Dosed with Nanosilver

2018 ◽  
Vol 52 (19) ◽  
pp. 11114-11122 ◽  
Author(s):  
Jonathan D. Martin ◽  
Paul C. Frost ◽  
Holger Hintelmann ◽  
Karla Newman ◽  
Michael J. Paterson ◽  
...  
Keyword(s):  
Yellow Perch ◽  
Perca Flavescens ◽  
Northern Pike ◽  
Esox Lucius ◽  
Pike Esox Lucius

Relationships between Mercury Concentrations in Walleye (Stizostedion vitreum) and Northern Pike (Esox lucius): Implications for Modelling and Biomonitoring

1994 ◽  
Vol 51 (9) ◽  
pp. 2090-2104 ◽  
Author(s):  
J. W. Parks ◽  
P. C. Craig ◽  
G. W. Ozburn
Keyword(s):  
Aquatic Ecosystems ◽  
Northern Pike ◽  
Esox Lucius ◽  
Stizostedion Vitreum ◽  
Empirical Relationships ◽  
Site Specific ◽  
Pike Esox Lucius ◽  
Species Specific ◽  
A Site ◽  
New Reservoir

Site-specific and interlake models are developed and tested for predicting mercury levels in walleye (Stizostedion vitreum) and northern pike (Esox lucius). The models are based on empirical relationships from coexisting fish in waters impacted by atmospheric loadings, contaminated sediments, and new reservoir formations. The sizes of fish used in the model (39-cm walleye and 55-cm northern pike) are typical of those caught by sport and commercial fishermen. The relative importance of a number of environmental factors to the accumulation of mercury in coexisting populations was examined by regression of the Biotic Mercury Partitioning Index (BMPI: mercury in species 1 (39-cm walleye)/mercury in species 2 (55-cm northern pike)) on pH, alkalinity, dissolved organic carbon, and other variables that have been identified as important to the accumulation of mercury in either or both species. No species-specific differences in mercury bioavailability were identified. We postulate that development of other biotic relationships on a site-specific, watershed, or broader geographic basis will assist in attempts to model mercury in aquatic ecosystems and reduce sample requirements for biomonitoring programs.

Some Behavioral Interactions of Spottail Shiners (Notropis hudsonius), Yellow Perch (Perca flavescens), and Northern Pike (Esox lucius)

1973 ◽  
Vol 30 (8) ◽  
pp. 1161-1178 ◽  
Author(s):  
J. R. Nursall
Keyword(s):  
Yellow Perch ◽  
Perca Flavescens ◽  
Northern Pike ◽  
Esox Lucius ◽  
Behavioral Interactions ◽  
Change Of Direction ◽  
Pike Esox Lucius ◽  
Glide Path ◽  
Beaver Lake ◽  
Young Of The Year

Dense schools of spottail shiners (Notropis hudsonius) are common in shallow water in Beaver Lake, generally 0.25–0.30 m below the surface, with smaller individuals more numerous towards the top. Position in the shcool is maintained by short radius behavior. The course of an individual is maintained by a beat of the tail, a glide, a hesitation, and a change of direction. Each glide path represents the chord of an arc of short radius about some neighbor. Shiners respond to disturbance by flash expansion of loose cruising association. Schooling is obligatory. The black caudal spot is probaly multifunctional as a recognition mark and releaser.Yellow perch (Perca flavescens) show an ontogeny of behavior through young-of-the-year, aggregation-sized perch (aggp), subadults, and adults. They behave as individuals or associate as streams. Disturbance will cause a group of aggp to disperse or to stream. The adult manifestation of streaming is pack-hunting. The activity of one perch attracts the attention of others; this leads to streaming or pack-hunting. Pack-hunting improves the chance of some members of the pack, not necessarily the initiator, capturing active prey, by countering the allaesthetic protean escape reactions of organisms such as the spottail shiner. Large mixed aggregations of spottail shiners and aggp are fortuitous.Northern pike (Esox lucius) are lone, opportunistic predators whose hunting technique combines in sequence motionlessness, axial tracking, and lunging. Prey may be swallowed head- or tailfirst, or sideways.The species studied here show a range of gregariousness, from the solitary pike, through the facultative nonpolarized and polarized schools of perch, to obligate nonpolarized and polarized schools of shiners.

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
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