Variation saisonnière dans la répartition des ressources alimentaires entre cinq espèces de poissons en fonction de la disponibilité des proies

1992 ◽  
Vol 70 (4) ◽  
pp. 796-803 ◽  
Author(s):  
Élyse Harnois ◽  
Richard Couture ◽  
Pierre Magnan
Keyword(s):  
Resource Partitioning ◽  
Yellow Perch ◽  
Perca Flavescens ◽  
Food Resources ◽  
Resource Abundance ◽  
Variation Saisonnière ◽  
Golden Shiner ◽  
Food Overlap ◽  
High Degree ◽  
Benthic Resources

We observed that yellow perch, Perca flavescens, golden shiner, Notemigonus crysoleucas, spottail shiner, Notropis hudsonius, and log perch, Percina caprodes, partitioned food resources in relation to resource abundance in a small bay of Lake Saint-Pierre, Quebec. When the abundance of benthic resources was at its lowest, in May 1988, the fish showed a very low overlap in their diet. In contrast, when these resources were most abundant, in August 1988, the four species had a high degree of food overlap. Two other sampling periods, in June and July, revealed intermediate situations. A fifth species, the silvery minnow, Hybognathus nuchalis, was phytophagous and, therefore, did not compete with the other species for food resources. An ecomorphological analysis of the first four species suggests that these partition food resources according to their functional morphology. Our results support Schoener's hypothesis, which states that the intensity of interspecific competition, in terms of resource partitioning, varies according to the abundance of these resources.

Olfactory organ morphology and histology in the yellow perch and golden shiner

1983 ◽  
Vol 61 (12) ◽  
pp. 2987-2990
Author(s):  
John Lyons
Keyword(s):  
Yellow Perch ◽  
General Structure ◽  
Perca Flavescens ◽  
Olfactory Organ ◽  
Sensory Cells ◽  
Basal Cells ◽  
Mucous Cells ◽  
Sustentacular Cells ◽  
Golden Shiner ◽  
Olfactory Organs

The structure of the olfactory organs of adult yellow perch Perca flavescens and golden shiner Notemigonus crysoleucas is described. The yellow perch has 14–16 primary lamellae and the golden shiner 17–20. Yellow perch olfactory epithelium is best developed in the proximal portions of the lamellae and consists of basal cells, sensory cells, and ciliated and unciliated sustentacular cells. Distal regions of the lamellae are made up of mucous cells and undifferentiated epithelium. The general structure of the yellow perch olfactory organ is similar to that of the Eurasian perch Perca fluviatilus. In the shiner sensory cells are organized into clusters. These clusters are interspersed throughout the epithelium and are surrounded by mucous and unciliated sustentacula cells. Ciliated sustentacular cells are rare, while neural pits are common. This type of epithelial organization has not previously been described from cyprinids.

Evidence across multiple scales for offshore transport of yellow perch (Perca flavescens) larvae in Lake Michigan

2005 ◽  
Vol 62 (12) ◽  
pp. 2683-2693 ◽  
Author(s):  
John M Dettmers ◽  
John Janssen ◽  
Bernard Pientka ◽  
Richard S Fulford ◽  
David J Jude
Keyword(s):  
Early Life ◽  
Yellow Perch ◽  
Lake Michigan ◽  
Multiple Scales ◽  
Perca Flavescens ◽  
Food Resources ◽  
Life Stages ◽  
Early Life Stages ◽  
Offshore Transport ◽  
Spawning Sites

Most freshwater fishes have short pelagic early life stages. Lake Michigan presents an interesting scenario for yellow perch (Perca flavescens), a species with a long pelagic larval stage that may not be well adapted to lakes with an expansive pelagic environment and extensive offshore transport. We investigated the possibility that early life stages of yellow perch were transported well offshore from their nearshore spawning grounds and explored whether food resources were more or less favorable offshore. To determine the extent to which pelagic age-0 yellow perch moved offshore, we sampled at multiple scales ranging from local (<2 km) to across the lake (>120 km). Evidence of offshore movement by fish larvae occurred at each scale. Yellow perch larvae were quickly transported offshore from nearshore spawning sites and remained in the offshore pelagia to sizes of at least 30 mm. Zooplankton density was greater offshore than nearshore, suggesting that pelagic age-0 yellow perch find improved food resources offshore compared with their nearshore spawning sites. Currents operating at oceanographic scales likely influenced the offshore movement of pelagic age-0 yellow perch in Lake Michigan. These currents, coupled with prey availability for pelagic age-0 individuals, may influence the recruitment success of this species.

Survival to hatching of fishes in sulfate-saline waters, Devils Lake, North Dakota

1995 ◽  
Vol 52 (3) ◽  
pp. 464-469 ◽  
Author(s):  
Todd M. Koel ◽  
John J. Peterka
Keyword(s):  
North Dakota ◽  
Sodium Sulfate ◽  
Yellow Perch ◽  
Hatching Success ◽  
Perca Flavescens ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Devils Lake ◽  
Common Carp Cyprinus Carpio ◽  
Species Survival

Laboratory-based bioassays were conducted to determine concentrations of sodium-sulfate type salinities that limit the hatching success of several fish species. Survival to hatching (SH) was significantly lower (P < 0.05) in sodium-sulfate type waters from Devils Lake, North Dakota, of ≥ 2400 mg/L total dissolved solids (TDS) than in fresh water of 200 mg/L. In waters of 200, 1150, 2400, 4250, and 6350 mg/L TDS, walleye (Stizostedion vitreum) SH was 41, 38, 7, 1, and 0%; northern pike (Esox lucius) SH was 92, 68, 33, 2, and 0%; yellow perch (Perca flavescens) SH was 88, 70, 73, 0, and 0%; white sucker (Catostomus commersoni) SH was 87, 95, 66, 0, and 0%; common carp (Cyprinus carpio) SH was 71, 69, 49, 63, and 25%.

Metabolic Stores of Yellow Perch (Perca flavescens): Comparison of Populations from an Acidic, Dystrophic Lake and Circumneutral, Mesotrophic Lakes

1992 ◽  
Vol 49 (12) ◽  
pp. 2474-2482 ◽  
Author(s):  
Jay A. Nelson ◽  
John J. Magnuson
Keyword(s):  
Yellow Perch ◽  
Egg Production ◽  
Glycogen Content ◽  
Physiological State ◽  
Perca Flavescens ◽  
Population Level ◽  
Seasonal Effects ◽  
Life History Strategies ◽  
Dystrophic Lake ◽  
Lipid Contents

Little is known about the animals that occupy naturally acidic habitats. To better understand the physiological state of animals from temperate, naturally acidic systems, we compared metabolite stores and meristics of two yellow perch (Perca flavescens) populations in northern Wisconsin. One population originated from a naturally acidic, dystrophic lake (Acid-Lake-Perch, ALP) and had previously been shown to have enhanced tolerance to low pH. The second population came from two nearby interconnected circumneutral, mesotrophic lakes (Neutral-Lake-Perch, NLP). Perch were collected throughout the year to account for seasonal effects and to discern whether patterns of metabolite utilization differed between populations. ALP had smaller livers containing less glycogen and greater muscle glycogen content than NLP. The ALP also had significantly greater liver and visceral lipid contents, and females from this population committed a greater fraction of their body mass to egg production. We interpret these results as indicative of physiological divergence at the population level in yellow perch. These results are discussed as possible products of H+ -driven changes in metabolism and as possible products of different life history strategies between populations. Our results also show that perch living in acidic, dystrophic Wharton Lake are not acid stressed.

Walleye (Stizostedion vitreum vitreum) and Yellow Perch (Perca flavescens) Populations and Fisheries of the Red Lakes, Minnesota, 1930–75

1977 ◽  
Vol 34 (10) ◽  
pp. 1774-1783 ◽  
Author(s):  
Lloyd L. Smith Jr.
Keyword(s):  
Growth Rate ◽  
Yellow Perch ◽  
Climatic Factors ◽  
Perca Flavescens ◽  
Growing Season ◽  
Commercial Fishery ◽  
Class Strength ◽  
Parent Stock ◽  
Catch Statistics

In an investigation of the commercial fishery of Red Lakes, Minnesota, for the 46-yr period 1930–75, catch statistics were analyzed, and the dynamics of the perch and walleye populations were examined. Mean annual yields of walleye for two statistical periods, 1930–53 and 1954–75, were 309,900 and 245,100 kg, respectively for walleyes, and 96,400 and 109,500 kg for perch. Annual abundance (CPE based on average catches per day per 5-net units of gill nets) varied from 3.8 to 64.6 kg for walleye, and from 2.5 to 34.4 kg for perch. Causes of fluctuations in harvestable stock were directly related to strength of year-classes and to growth rate during the season of capture. Year-class strength was not related to the abundance of parent stock or of potential predators. The respective strengths of year-classes of perch and walleye in the same year were positively correlated (r = 0.859, P < 0.01), and are directly related to climatic factors. Growth rate of walleye in different calendar years varied from +30.7 to −42.2% of mean growth, and that of perch from +13.4 to −8.6% (1941–56). Growing season began in mid-June and was almost over by September 1. Walleye yield could be enhanced by starting harvest July 1 instead of early June. Perch yield could be improved by harvesting small perch. Key words: Percidae, Perca, population dynamics, Stizostedion, long-term yield

Zebra mussel (Dreissena polymorpha) effects on sediment, other zoobenthos, and the diet and growth of adult yellow perch (Perca flavescens) in pond enclosures

1997 ◽  
Vol 54 (8) ◽  
pp. 1903-1915 ◽  
Author(s):  
S A Thayer ◽  
R C Haas ◽  
R D Hunter ◽  
R H Kushler
Keyword(s):  
Zebra Mussel ◽  
Dreissena Polymorpha ◽  
Yellow Perch ◽  
Perca Flavescens ◽  
Structural Heterogeneity ◽  
Zebra Mussels ◽  
Zooplankton Density ◽  
Growth Differences ◽  
Percent Nitrogen ◽  
Induced Changes

Zebra mussels (Dreissena polymorpha) in enclosures located in an experimental pond adjacent to Lake St. Clair, Michigan, increased sedimentation rate but had relatively minor effects on percent organic matter and percent nitrogen content of sediment. In contrast, sediment from Lake St. Clair adjacent to zebra mussels was significantly higher in carbon than that 0.5 m away. Zebra mussels increase the nutritional value of surficial sediment and provide greater structural heterogeneity, which is probably more important in causing change among zoobenthos. Zoobenthos and yellow perch (Perca flavescens) diet were dominated by dipteran larvae and leeches. Zoobenthos was significantly different between enclosures with and without zebra mussels. Treatments with zebra mussels had significantly more oligochaetes and tended to have more crustaceans (isopods and amphipods). In June, yellow perch without zebra mussels consumed significantly more zooplankton, and those with mussels had more crustaceans in their diet. Zooplankton density was greater in treatments without zebra mussels. Yellow perch with zebra mussels grew significantly more than those without mussels. Zebra mussels in the enclosures neither reproduced nor were eaten by yellow perch; hence. the observed growth differences were due to indirect effects involving zebra mussel induced changes in benthic structure and biota.

The behaviour of Urocleidus adspectus Mueller, 1936 (Monogenea) on the gills of Perca flavescens

1982 ◽  
Vol 60 (12) ◽  
pp. 3237-3240 ◽  
Author(s):  
D. K. Cone ◽  
M. D. B. Burt
Keyword(s):  
Adult Worm ◽  
Water Flow ◽  
Yellow Perch ◽  
Perca Flavescens ◽  
Natural Conditions ◽  
Experimental Conditions ◽  
Interlamellar Space

This study examines the behaviour of Urocleidus adspectus on the gills of yellow perch (Perca flavescens). The adult worm is found firmly attached to the gills of the host with the haptor fitted snugly into an interlamellar space and with four large hamuli and 14 small marginal hooks impaled into the adjacent epithelium. The forebody of the worm is almost always directed downstream toward the tip of the primary lamella. The worm is a tissue feeder and the reach and flexibility of the forebody allow efficient grazing around any one site of attachment. Worms can graze farther by moving to a new site of attachment. This involves a leechlike movement in which the haptor and the head are alternately used as the organ of attachment. The movement is brief (3 s or less) and, most likely in response to the threat of dislodgment, only single relocations are made at any one time. The worm almost always comes to lie in the preferred adhesive attitude no matter what the direction of travel under natural conditions. However, under experimental conditions in which there was no water flow, the position was occasionally reversed.

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