Digestibility of microbial and mussel meal for Arctic charr (Salvelinus alpinus) and Eurasian perch (Perca fluviatilis)

2014 ◽  
Vol 22 (2) ◽  
pp. 485-495 ◽  
Author(s):  
M. Langeland ◽  
A. Vidakovic ◽  
J. Vielma ◽  
J.E. Lindberg ◽  
A. Kiessling ◽  
...  
Keyword(s):  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Perca Fluviatilis ◽  
Eurasian Perch ◽  
Perch Perca Fluviatilis

scholarly journals Factors determining parasite abundance in European perch, Perca fluviatilis, European whitefish, Coregonus lavaretus, and Arctic charr, Salvelinus alpinus, in an oligotrophic lake, southern Norway

2020 ◽  
Vol 40 ◽  
pp. 109-129
Author(s):  
Tom Robin Olk ◽  
Ann-Cecilie Henriksen ◽  
Solveig Irene Dolven ◽  
Mathias Leithe Haukø ◽  
Espen Lydersen ◽  
...  
Keyword(s):  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Perca Fluviatilis ◽  
Coregonus Lavaretus ◽  
Host Age ◽  
European Perch ◽  
Parasite Abundance ◽  
Perch Perca Fluviatilis ◽  
Southern Norway ◽  
Benthic Animals

Time and spatial variations in macroparasite status were investigated in European perch, Perca fluviatilis, European whitefish, Coregonus lavaretus, and Arctic charr, Salvelinus alpinus in Lake Norsjø (Southern Norway), based on gillnet fishing in three locations in the spring, summer, and fall 2018. In addition, length, weigth, age, sex, δ13C, and δ15N were determined. Parasite abundance was modelled using negative binomial generalized linear models in relation to fish metrics, season, and sampling location. The most prevalent parasite species were determined by the diet and habitat of the host. European perch was mainly infected by acanthocephalans, European whitefish mainly infected by acanthocephalans and cestodes, and Arctic charr mainly infected by cestodes. The most prevalent parasites in European perch are transmitted by benthic animals. Parasites in European whitefish are transmitted by both benthic animals and copepods, while the most prevalent parasites in Arctic charr are copepod transmitted. This corresponds well with the δ13C signatures in the three species, indicating that European perch primarily fed in the littoral zone (δ13C: -24.9 ± 2.5 ‰), Arctic charr in the pelagic and profundal zone (δ13C: -29.4 ± 1.1 ‰), while European whitefish both fed in the littoral and pelagic zone (δ13C: -28.3 ± 2.3 ‰) of Lake Norsjø. Individual abundances of parasites depended on host age, length, sex, δ15N, and season. Positive correlations between parasite abundance and host age, length, or trophic level measured as δ15N were most common, and occurred in all three host species. Many parasites accumulate with age, and larger hosts provide more diverse habitats for parasites.

scholarly journals Arctic charr (Salvelinus alpinus) squeezed in a complex fish community dominated by perch (Perca fluviatilis)

2013 ◽  
Vol 33 (0) ◽  
Author(s):  
Odd Terje Sandlund ◽  
Eivind Haugerud ◽  
Sigurd Rognerud ◽  
Reidar Borgstrøm
Keyword(s):  
Fish Community ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Perca Fluviatilis ◽  
Perch Perca Fluviatilis

Oocyte quality indicators in Eurasian perch, Perca fluviatilis L., during reproduction under controlled conditions

Aquaculture ◽  
2011 ◽  
Vol 313 (1-4) ◽  
pp. 84-91 ◽  
Author(s):  
Daniel Żarski ◽  
Katarzyna Palińska ◽  
Katarzyna Targońska ◽  
Zoltán Bokor ◽  
László Kotrik ◽  
...  
Keyword(s):  
Quality Indicators ◽  
Perca Fluviatilis ◽  
Oocyte Quality ◽  
Eurasian Perch ◽  
Controlled Conditions ◽  
Perch Perca Fluviatilis

Effect of different activating solutions on the fertilization ability of Eurasian perch, Perca fluviatilis  L., eggs

2012 ◽  
Vol 28 (6) ◽  
pp. 967-972 ◽  
Author(s):  
D. Żarski ◽  
Á. Horváth ◽  
L. Kotrik ◽  
K. Targońska ◽  
K. Palińska ◽  
...  
Keyword(s):  
Perca Fluviatilis ◽  
Eurasian Perch ◽  
Perch Perca Fluviatilis
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