The combined effect of body size and temperature on oxygen consumption rates and the size‐dependency of preferred temperature in European perch Perca fluviatilis

2021 ◽  
Vol 98 (6) ◽  
pp. 1556-1556
Keyword(s):  
Oxygen Consumption ◽  
Body Size ◽  
Perca Fluviatilis ◽  
Combined Effect ◽  
European Perch ◽  
Preferred Temperature ◽  
Size Dependency ◽  
Perch Perca Fluviatilis ◽  
Consumption Rates

scholarly journals Adult female European perch (Perca fluviatilis) from the Baltic Sea show no evidence of thiamine deficiency

2021 ◽  
pp. 102081
Author(s):  
Johan Gustafsson ◽  
Karin Ström ◽  
Linus Arvstrand ◽  
Lars Förlin ◽  
Lillemor Asplund ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Adult Female ◽  
Thiamine Deficiency ◽  
Perca Fluviatilis ◽  
The Baltic Sea ◽  
European Perch ◽  
Perch Perca Fluviatilis ◽  
The Baltic

The Relation of Oxygen Consumption to Body Size and to Temperature in the Larvae of Chironomus Riparius Meigen

1958 ◽  
Vol 35 (2) ◽  
pp. 383-395
Author(s):  
R. W. EDWARDS
Keyword(s):  
Oxygen Consumption ◽  
Body Size ◽  
Dry Matter ◽  
Larval Instar ◽  
Weight Ratio ◽  
Dry Weight ◽  
Chironomus Riparius ◽  
Consumption Rates ◽  
Rate Of Oxygen Consumption ◽  
Wet Weight

1. The oxygen consumption rates of 3rd- and 4th-instar larvae of Chironomus riparius have been measured at 10 and 20° C. using a constant-volume respirometer. 2. The oxygen consumption is approximately proportional to the 0.7 power of the dry weight: it is not proportional to the estimated surface area. 3. This relationship between oxygen consumption and dry weight is the same at 10 and at 20° C.. 4. The rate of oxygen consumption at 20° C. is greater than at 10° C. by a factor of 2.6. 5. During growth the percentage of dry matter of 4th-instar larvae increases from 10 to 16 and the specific gravity from 1.030 to 1.043. 6. The change in the dry weight/wet weight ratio during the 4 larval instar supports the theory of heterauxesis. 7. At 20° C., ‘summer’ larvae respire faster than ‘winter’ larvae.

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.

Monitoring of the ecological state of the city lake of Chita

2021 ◽  
pp. 52-57
Author(s):  
Vladimir V. Zvyagintsev ◽  
Olga Yu. Zvyagintseva ◽  
Vadim K. Chernyshov
Keyword(s):  
Heavy Metals ◽  
Fluctuating Asymmetry ◽  
Aquatic Ecosystem ◽  
Perca Fluviatilis ◽  
Gibel Carp ◽  
European Perch ◽  
Lake Kenon ◽  
Perch Perca Fluviatilis ◽  
The City

Introduction. The paper presents the results of the studies on assessing the quality of the aquatic ecosystem of a lake located within the city. The European perch (Perca fluviatilis L.) and the Gibel carp (Carassius gibelio) were used as an indicator for determining the quality of the aquatic ecosystem by the method of fluctuating asymmetry. Problem Statement. The aim of the work was to conduct monitoring with the subsequent assessment of the quality of the ecosystem of the city lake using the method of fluctuating asymmetry (hereinafter FA). Theoretical and Practical Part. The quality of the urban lake aquatic ecosystem was assessed using the FA method (indicators: the European perch (Perca fluviatilis L.), 1758 and the Gibel carp (Carassius auratus Bloch), 1783). To identify the reasons for the high PFA values, a chemical analysis (in an accredited laboratory) of the gills of the Gibel carp for heavy metals was performed. Conclusions. As a result of the research, the FA indicators values for these indicators were obtained. According to the results of a laboratory study of the content of heavy metals in the gill arches of the Gibel carp, an excess of the maximum permissible concentration of 8 out of 10 analyzed elements was revealed. It has been established that the ecosystem of the city lake Kenon is experiencing a significant anthropogenic load (5 points — the critical quality of the aquatic environment) and it continues to increase towards the deterioration of the habitat.

Size-related oxygen consumption and ammonia excretion of Eurasian perch (Perca fluviatilis L.) reared in a recirculating system

2009 ◽  
Vol 41 (1) ◽  
pp. 135-142 ◽  
Author(s):  
Vlastimil Stejskal ◽  
Jan KouÅ™il ◽  
Olga Valentová ◽  
Jitka Hamáčková ◽  
Tomáš Policar
Keyword(s):  
Oxygen Consumption ◽  
Ammonia Excretion ◽  
Perca Fluviatilis ◽  
Eurasian Perch ◽  
Perch Perca Fluviatilis

Endohelminths of European Perch (Perca fluviatilis) from Selected Localities in Poland with an Emphasis on Search of the Broad Fish Tapeworm Dibothriocephalus latus

2019 ◽  
Vol 64 (3) ◽  
pp. 544-550
Author(s):  
Alžbeta Radačovská ◽  
Eva Bazsalovicsová ◽  
Angelika Linowska ◽  
Marta Kołodziej-Sobocińska ◽  
Ivica Králová-Hromadová
Keyword(s):  
Perca Fluviatilis ◽  
European Perch ◽  
Perch Perca Fluviatilis

scholarly journals Size-dependent foraging niches of European Perch Perca fluviatilis (Linnaeus, 1758) and North American Yellow Perch Perca flavescens (Mitchill, 1814)

2017 ◽  
Vol 101 (1) ◽  
pp. 23-37 ◽  
Author(s):  
Stefan M. Linzmaier ◽  
Laura A. Twardochleb ◽  
Julian D. Olden ◽  
Thomas Mehner ◽  
Robert Arlinghaus
Keyword(s):  
North American ◽  
Yellow Perch ◽  
Perca Flavescens ◽  
Perca Fluviatilis ◽  
European Perch ◽  
Size Dependent ◽  
Perch Perca Fluviatilis

Nutritional quality and safety of European perch (Perca fluviatilis) from three lakes of Central Italy

2007 ◽  
Vol 100 (2) ◽  
pp. 482-490 ◽  
Author(s):  
Elena Orban ◽  
Teresina Nevigato ◽  
Maurizio Masci ◽  
Gabriella Di Lena ◽  
Irene Casini ◽  
...  
Keyword(s):  
Nutritional Quality ◽  
Central Italy ◽  
Perca Fluviatilis ◽  
Quality And Safety ◽  
European Perch ◽  
Perch Perca Fluviatilis
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