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.

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

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.

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

Response of a Boreal Northern Pike (Esox lucius) Population to Lake Impoundment: Wupaw Bay, Southern Indian Lake, Manitoba

1984 ◽  
Vol 41 (4) ◽  
pp. 706-714 ◽  
Author(s):  
R. A. Bodaly ◽  
L. F. W. Lesack
Keyword(s):  
Reproductive Success ◽  
Natural Variation ◽  
Northern Pike ◽  
Esox Lucius ◽  
Forage Fish ◽  
Terrestrial Vegetation ◽  
Transient Effect ◽  
Pike Esox Lucius ◽  
Discernible Effect ◽  
Young Of The Year

A population of northern pike (Esox lucius) in Wupaw Bay, Southern Indian Lake, Manitoba, was monitored for 1 yr prior to impoundment of the lake and for 5 yr after impoundment. Impoundment had a pronounced but transient effect on pike reproductive success. The abundance of young-of-the-year pike in 1977, the 1st yr following impoundment, was 4–10 times higher than in the following 3 yr. Flooded terrestrial vegetation was apparently conducive to pike reproductive success only in the 1st yr after inundation. A strong 1977 year-class was evident in gillnet catches 4 yr later. This year-class was slower growing and in poorer condition than other year-classes. The impoundment of Wupaw Bay had no discernible effect on the growth, condition, or mortality of the adult pike population, with the exception of changes ascribed to the presence of the large 1977 year-class. The growth of the adult pike population appeared to be limited by forage fish abundance, but variations in feeding on fish were largely unexplained and were probably due to natural variation. The year-to-year pattern of forage fish reproductive success could not be related to the timing of lake impoundment, but may have been related to summer water temperatures. Variations in feeding on invertebrates appeared to be due to postimpoundment increases in productivity, but these changes were insufficient to affect population parameters. Wupaw Bay surface area increased by only 9% as a result of lake impoundment, the smallest areal increase in the Southern Indian Lake reservoir. The influx of nutrients and flooded terrestrial vegetation was therefore much smaller than in other temperate reservoirs where increases in pike production have been observed.

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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