Seasonal differences in infestation of the perch Perca fluviatilis L. from Lake Constance with digenean trematodes

1997 ◽  
Vol 83 (8) ◽  
pp. 789-792 ◽  
Author(s):  
Thomas E. Balling ◽  
Wolfgang Pfeiffer
Keyword(s):  
Perca Fluviatilis ◽  
Lake Constance ◽  
Seasonal Differences ◽  
Perch Perca Fluviatilis

Percids of Lake Constance, a Lake Undergoing Eutrophication

1977 ◽  
Vol 34 (10) ◽  
pp. 1670-1677 ◽  
Author(s):  
J. Hartmann ◽  
W. Nümann
Keyword(s):  
Growth Yield ◽  
Perca Fluviatilis ◽  
Lake Constance ◽  
Review Of Literature ◽  
Limited Data ◽  
Age Composition ◽  
Perch Perca Fluviatilis ◽  
The Status ◽  
Stizostedion Lucioperca ◽  
Growth Distribution

A review of literature suggested that yield of Eurasian perch, Perca fluviatilis, in Lake Constance was greatest with moderate eutrophication. During eutrophication (1950–76), changes also took place in food, growth, distribution, and diseases of perch. Differences in perch between Lake Constance and other German or Alpine lakes of various degrees of eutrophy were found with respect to growth, yield, the relation of growth to yield, food, and the relation of food to growth. Similarities were apparent for perch in these lakes in terms of their age composition, age at maturity, and mortality. Only limited data were available for pikeperch, Stizostedion lucioperca, mainly on stocking success, yield, and growth. The status of percids in Lake Constance indicates that eutrophication has led to conditions favoring percids. Key words: Percidae, Lake Constance limnology, eutrophication, yield, Perca fluviatilis, food, growth, distribution, disease, Stizostedion lucioperca

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