Young-of-the-Year Fish Community in Nine Lakes, Varying in pH, on the Canadian Shield

1988 ◽  
Vol 45 (S1) ◽  
pp. s121-s126 ◽  
Author(s):  
J. R. M. Kelso ◽  
J. H. Lipsit
Keyword(s):  
Yellow Perch ◽  
Fish Community ◽  
Acidic Deposition ◽  
Larval Fish ◽  
Canadian Shield ◽  
Resident Species ◽  
Spring Freshet ◽  
Young Of The Year ◽  
Peak Abundance ◽  
Shield Lakes

In nine Canadian Shield lakes, seven with resident fish populations, the young-of-the-year (yoy) were first captured some 4 wk and more following the major spring depressions in pH. Since spawning of many resident species followed the spring freshet, yellow perch (Perca flavescens), darters, and many cyprinids sensitive to low pH would hatch and develop folowing the most serious spring changes in chemistry. Within a lake, the period of peak abundance occurred within a period of 2–9 wk during the 3 yr of study. Abundance of yoy was not strongly linked to lake pH or alkalinity. Diversity of yoy was strongly related to lake pH (r = 0.87) and alkalinity (r = 0.89). Monitoring the larval fish community appears to provide a responsive, reproducible measure of change for some of the fish communities sensitive to effects of acidic deposition and can be carried out with only moderate expenditure of time and resources.

Parasite effects on the survival, growth, and reproductive potential of yellow perch (Perca flavescens Mitchill) in Canadian Shield lakes

2001 ◽  
Vol 79 (11) ◽  
pp. 1980-1992 ◽  
Author(s):  
M W Johnson ◽  
Terry A Dick
Keyword(s):  
Visceral Fat ◽  
Yellow Perch ◽  
Perca Flavescens ◽  
Reproductive Potential ◽  
Fish Host ◽  
Canadian Shield ◽  
Relative Mass ◽  
Parasitic Infections ◽  
Host Sex ◽  
Shield Lakes

Three parasites of yellow perch, Perca flavescens, in four Canadian Shield lakes were studied for their effects on perch growth and mortality. Glugea sp. xenomas in cells of the intestinal wall and in visceral fat and Apophallus brevis metacercariae infecting the musculature reduced the growth of perch, causing mortality in younger and smaller fish. High numbers of Raphidascaris acus encysted in the liver of yellow perch correlated significantly with a reduction in visceral-fat mass in age 1+ females and age 0+ and 1+ males. A significant correlation in these subsamples indicates that host sex, size, trophic status, and relative mass of the liver are linked to R. acus density. Our data suggest that interactions among parasitic infections and age, size, and sex of the fish host can affect growth and survival of the host, especially during periods of low energy inputs and reproductive stress.

Chronology, distribution, and sizes of larval fish sampled by light traps in macrophytic Chemung Lake

1985 ◽  
Vol 63 (11) ◽  
pp. 2569-2577 ◽  
Author(s):  
Robert S. Gregory ◽  
Perce M. Powles
Keyword(s):  
Common Carp ◽  
Yellow Perch ◽  
Larval Fish ◽  
Larval Abundance ◽  
Low Density ◽  
Light Traps ◽  
Resident Species ◽  
Emergence Period ◽  
Pumpkinseed Sunfish ◽  
Total Length

Light traps were used to assess larval abundance and chronology of appearance in Chemung Lake in 1982. Eleven of 21 resident species were captured, totalling 7234 individuals. The most abundant were yellow perch (2809), Iowa darter (2571), pumpkinseed sunfish (1288), bluntnose minnow (200), and carp (123). Iowa darter and pumpkinseed were taken only as prolarvae (yolk-sac larvae) and postlarvae, but yellow perch, from 5 to 33 mm total length, were attracted. Common carp and bluntnose minnow entered traps almost exclusively as prolarvae (6–13 mm and 6–12 mm total length, respectively). Perch had the shortest emergence period, May 6–12 (15–17 °C), followed by darters. May 9–31 (15–21 °C). Pumpkinseed and carp emerged over a 6-week period from June 3 to July 23 (16–25 °C). Perch prolarvae preferred shallow, high-density macrophyte areas; their postlarvae preferred deep, low-density macrophyte zones. All stages of larval darter selected shallow, macrophyte-dense regions, as did the young of pumpkinseed.

Spatial and environmental correlates of fish community structure in Canadian Shield lakes

2006 ◽  
Vol 63 (12) ◽  
pp. 2780-2792 ◽  
Author(s):  
Andrea Bertolo ◽  
Pierre Magnan
Keyword(s):  
Community Structure ◽  
Fish Community ◽  
Castor Canadensis ◽  
Canadian Shield ◽  
Coregonus Clupeaformis ◽  
Fish Community Structure ◽  
Piscivorous Fish ◽  
Environmental Correlates ◽  
Beaver Dam ◽  
Shield Lakes

We used data on fish species biomass from 38 lakes of the Canadian Shield (Québec) to determine the contribution of environmental (lake and watershed morphometry) and spatial (e.g., hydrographic connectivity and geographic coordinates) variables on fish community structure. By using a combination of multivariate analyses, we show that nearly half of the variation in the fish community structure is explained by the independent contributions of spatial and environmental factors. Walleye (Sander vitreus) and lake whitefish (Coregonus clupeaformis) were significantly associated with the absence of beaver (Castor canadensis) dams, whereas northern pike (Esox lucius) was positively correlated with beaver dam presence. Altitude and longitude, but not current patterns in lake connectivity, were the main explanatory spatial variables accounting for the observed pattern in fish community structure. Large piscivorous fish were associated with a reduced richness and biomass of small prey, suggesting that predation is a structuring factor in these lakes. By showing that geographic coordinates and altitude are better descriptors of fish community structure than hydrographic connections, our study suggests that past colonization routes are relatively more important than current ones in structuring fish communities at the landscape level. This interpretation is supported by recently published genetic data.

Logging-induced variations in dissolved organic carbon affect yellow perch (Perca flavescens) recruitment in Canadian Shield lakes

2007 ◽  
Vol 64 (2) ◽  
pp. 181-186 ◽  
Author(s):  
Andrea Bertolo ◽  
Pierre Magnan
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Yellow Perch ◽  
Perca Flavescens ◽  
Larval Survival ◽  
Canadian Shield ◽  
Lake Volume ◽  
Secondary Productivity ◽  
Shield Lakes ◽  
Positive Effect

There is increasing interest in the effects of allochthonous carbon on lake food webs. By temporarily increasing levels of dissolved organic carbon (DOC) in lakes, logging can help us understand how carbon from the watershed could affect lake biota. The goals of this study were to determine whether (i) logging has a significant effect on the abundance of young-of-the-year (YOY) yellow perch (Perca flavescens) in Canadian Shield lakes and (ii) any changes in yellow perch recruitment could be related to increases in nutrients (N and P) and (or) DOC following logging. To do this, we examined 22 Canadian Shield lakes: the watersheds of 13 were not impacted, while 9 underwent logging (1%–78% of the watershed area). We found that the relative abundance of YOY yellow perch increased after logging in proportion to the ratio between the area of the logged watershed and the lake volume. We show that this effect is likely explained by an increase in DOC following logging. This might be related to (i) an increase in secondary productivity due to a positive effect of terrestrial carbon on the microbial loop and (or) (ii) an increased hatching success and (or) larval survival due to a greater protection from UV radiation by DOC.

Cadmium concentrations of crustacean zooplankton of acidified and nonacidified Canadian Shield lakes

1990 ◽  
Vol 24 (9) ◽  
pp. 1367-1372 ◽  
Author(s):  
Norman D. Yan ◽  
Gerald L. Mackie ◽  
Peter J. Dillon
Keyword(s):  
Canadian Shield ◽  
Crustacean Zooplankton ◽  
Shield Lakes

scholarly journals Larval Fish Community in the Northwestern Iberian Upwelling System during the Summer Period

Oceans ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 700-722
Author(s):  
Sonia Rábade Uberos ◽  
Alba Ruth Vergara Castaño ◽  
Rosario Domínguez-Petit ◽  
Fran Saborido-Rey
Keyword(s):  
Community Composition ◽  
Fish Community ◽  
Larval Fish ◽  
Life Stages ◽  
Early Life Stages ◽  
Summer Period ◽  
Specific Composition ◽  
Larval Production ◽  
High Diversity ◽  
Northwestern Iberian Peninsula

The Galician shelf (northwestern Iberian Peninsula) is a highly dynamic area with an important multi-species fisheries industry that exploits resources from several habitats, characterized by being not only highly diverse, rich, and productive but also seasonally and interannually variable. Early life stages of different species are distributed throughout the year, with fluctuating abundances and community composition. Likewise, the influence of environmental factors and processes on larval production and survival remains unknown. Sampling was carried out in July 2012, and all the larvae obtained were identified to establish the specific composition of the community in a summer upwelling scenario. The results show no zonation in the species distribution, a consequence of the mixing effects of the upwelling and eddies, with high diversity but low abundance, which render in a slight predominance of a few species. Due to the dependence of planktonic populations on upwelling events, which was not highly pronounced in 2012, we cannot conclude that this was a typical conformation of the Galician summer larval fish community, but it is a first approach to comprehend the community composition.

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