Enteric Helminths of Perch (Perca fluviatilis L.) and Yellow Perch (Perca flavescens Mitchill): Stochastic or Predictable Assemblages?

1999 ◽  
Vol 85 (5) ◽  
pp. 785 ◽  
Author(s):  
J. P. Carney ◽  
T. A. Dick
Keyword(s):  
Yellow Perch ◽  
Perca Flavescens ◽  
Perca Fluviatilis ◽  
Perch Perca Fluviatilis

Ontogenetic Changes in the Distribution of Larval and Juvenile Yellow Perch (Perca flavescens): A Response to Prey or Predators?

1988 ◽  
Vol 45 (10) ◽  
pp. 1820-1826 ◽  
Author(s):  
John R. Post ◽  
Donald J. McQueen
Keyword(s):  
Yellow Perch ◽  
Perca Flavescens ◽  
Perca Fluviatilis ◽  
Distribution Patterns ◽  
Nearshore Zone ◽  
Ontogenetic Changes ◽  
European Perch ◽  
Perch Perca Fluviatilis ◽  
Selective Forces ◽  
Predator Abundance

Distribution of larval and juvenile yellow perch (Perca flavescens) in Lake St. George, Ontario, changed during development as follows: (1) early in development, the larvae were distributed exclusively offshore, both day and night; (2) larger larvae and juveniles migrated nearshore to offshore at dusk, returning the the nearshore zone at dawn; (3) the extent of this migration weakened as the fish grew, and they spent a greater porportion of their time nearshore and did not migrate as far at night; and (4) by the time juveniles reached approximately 30 mm total length, they were distributed exclusively in the nearshore habitat both day and night. Analysis of published reports on distribution patterns of larval and juvenile yellow perch and the European perch (Perca fluviatilis) suggests that the ontogenetic distribution patterns observed in Lake St. George are typical for the two Perca species. This regularity amongst lakes in ontogenetic distribution pattern occurred despite variation in the selective forces of prey and predator abundance in nearshore and offshore habitats. We conclude that the changes in distribution throughout early development are not in response to the proximate selective forces of prey abundance or predation risk

Some remarks on the ecology of Echinorhynchus salmonis Muller 1784

1970 ◽  
Vol 48 (2) ◽  
pp. 317-321 ◽  
Author(s):  
Shibru Tedla ◽  
C. H. Fernando
Keyword(s):  
Yellow Perch ◽  
Rapid Development ◽  
Perca Fluviatilis ◽  
Early Summer ◽  
Late Winter ◽  
Breeding Cycle ◽  
Intermediate Hosts ◽  
Egg Maturation ◽  
Perch Perca Fluviatilis ◽  
Bodies Of Water

The acanthocephalan Echinorhynchus salmonis showed a marked seasonality of occurrence in the yellow perch Perca fluviatilis in the Bay of Quinte, Lake Ontario. The incidence of the parasite started increasing in autumn and reached a peak in late winter. It started decreasing in March and fell to zero in August or September. Such seasonality has been previously observed for acanthocephalans in bodies of water which freeze, as does the Bay of Quinte. There is a single egg maturation period for the parasite in early summer, after which the parasites die. Infestation of intermediate hosts occurs in spring when the population of the hosts is high. The subsequent warm period ensures rapid development of the parasite. Within the fish the parasite is less affected by the lower temperatures prevailing in winter. No influence was apparent between the maturity and seasonality of the parasite and the food and breeding cycle of the fish.

Aggregations of Spottail Shiners and Yellow Perch

1969 ◽  
Vol 26 (6) ◽  
pp. 1672-1676 ◽  
Author(s):  
J. R. Nursall ◽  
Morley E. Pinsent
Keyword(s):  
Shallow Water ◽  
Yellow Perch ◽  
Perca Fluviatilis ◽  
Northern Pike ◽  
Total Length ◽  
Perch Perca Fluviatilis ◽  
Fish Predators ◽  
Beaver Lake

Spottail shiners (Notropis hudsonius (Clinton)) and immature yellow perch (Perca fluviatilis Linnaeus), ranging in size from 30 to 110 mm, total length, aggregate in shallow water in Beaver Lake, Alberta. The ratio of number of shiners to that of perch is about 1.5:1. Perch larger than 110 mm leave the aggregation. Eventually they will prey on it from below. Other predators include northern pike and walleye, which lie below the aggregation, and terns and gulls from above. Shiners in the aggregation are 10 times more likely to be taken by fish predators than are perch.

Consumption of plant material by perch (Perca fluviatilis)

2016 ◽  
Vol 65 (2) ◽  
pp. 95-97 ◽  
Author(s):  
Tomáš Zapletal ◽  
Zdeněk Adámek ◽  
Pavel Jurajda ◽  
Kevin Roche ◽  
Lucie Všetičková ◽  
...  
Keyword(s):  
Plant Material ◽  
Perca Fluviatilis ◽  
Perch Perca Fluviatilis
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