scholarly journals Influence of Triaenophorus nodulosus invasion on morphobiological parameters of European perch (Perca fluviatilis L.) in Shatsk National Nature Park reservoirs

2020 ◽  
Vol 10 (4) ◽  
pp. 250-256
Author(s):  
N. Vovk ◽  
R. Kononenko ◽  
A. Shvets
Keyword(s):  
Morphometric Analysis ◽  
Perca Fluviatilis ◽  
European Perch ◽  
Reproductive Ability ◽  
Perch Perca Fluviatilis ◽  
Significant Difference ◽  
Nature Park ◽  
Field And Laboratory Conditions ◽  
The Impact ◽  
Triaenophorus Nodulosus

It was conducted comprehensive ichthyological and ichthyopatological research of European perch (Perca fluviatilis L.) populations in lakes of Shatsk National Nature Park and the impact of Triaenophorus nodulosus invasion on its size, weight and reproductive ability. Morphometric analysis, absolute and relative fecundity of fish were determined by the methods generally accepted in ichthyology. Clinical examination of fish (2,225 specimens, including European perch -1650 specimens) was performed during control catches. Simultaneously, the weight, size, and age of the fish were determined. Morphometric analysis was performed on 120 specimens of perch with the length of 104.4-194.8 mm and the weight of 16.4-177.6 g. Pathoanatomic autopsy of the fish was performed in the field and laboratory conditions. Parasitological studies were performed by the method of incomplete parasitological analysis. The extent and intensity of the invasion were determined. When conducting research on the parasitofauna of native fish species in the lakes of the Shatsk National Nature Park, it was found their infestation with helminths of various systematic positions (Triaenophorus nodulosus, Khawia sinensis, Raphidascaris. acus, and Philometroides lusiana). Perch was the most infected with the helminths. The invasion caused by the plerocercoid of Cestoda T. Nodulosus was the most intensive (18.2-56.3%, depending on the reservoir). There was a significant difference in the measurements of non-infested and infested with T. nodulosus fish individuals of the same age, we also registered significant lag in growth and a decrease in body weight among the infested specimens. A steady trend towards a decrease in fecundity parameters was also observed in infested fish. Thus, in non-infested individuals of 4-year perch, the highest individual absolute fecundity (IAF) was 6.7 thousand eggs against 3.1 thousand eggs in the infested perch (Lucimer lake). The lowest IAF – 3.9 thousand eggs against 2.0 thousand eggs in the infested perch specimesn was found in Chorne Velyke lake. In non-infested individuals of 5-year perch, the highest IAF index was 9.4 thousand eggs when compared to 6.8 thousand in the infested perch (Pulemetske lake). The lowest IAF was 6.3 thousand eggs (Chorne Velyke lake). The highest IAF was recorded in perch from Pulemetske lake (34.6 thousand eggs in non-infested versus 10.3 thousand eggs in infested specimens). The lowest IAF was observed in perch from Chorne Velyke lake (9.1 and 6.6 thousand eggs, respectively). There was decrease in fish size, weight and fecundity in perch infested with Tr. nodulosus, but it did not affect the reproductive fish ability.

Influence ofTriaenophorus nodulosusplerocercoids (Cestoda: Pseudophyllidea) on the occurrence of intestinal helminths in the perch (Perca fluviatilis)

2017 ◽  
Vol 91 (6) ◽  
pp. 711-717 ◽  
Author(s):  
N.J. Morley ◽  
J.W. Lewis
Keyword(s):  
Perca Fluviatilis ◽  
Helminth Species ◽  
Intestinal Helminths ◽  
European Perch ◽  
Perch Perca Fluviatilis ◽  
Wide Range ◽  
Concurrent Infections ◽  
Acanthocephalus Lucii ◽  
The Mean ◽  
Triaenophorus Nodulosus

AbstractConcurrent infections of helminths in vertebrates are widespread and may demonstrate synergistic, antagonistic or negligible levels of interactions between species that share a common site. However, indirect interactions between species that occur in different organs of a host are poorly documented, particularly in fish. Plerocercoids ofTriaenophorus nodulosusare common liver infections of European perch (Perca fluviatilis). These larval cestodes cause extensive liver damage, resulting in systemic pathologies that include alteration of the physiochemical environment of the intestine. Perch harbour a wide range of intestinal helminths whose occurrence may be potentially influenced by the concurrent presence ofT. nodulosusplerocercoids. The present study, using an existing dataset, investigated the effects ofT. nodulosuson the infection levels of four common perch helminths –Acanthocephalus lucii, Camallanus lacustris, Proteocephalus percaeandBunodera luciopercae. The prevalences ofA. luciiandC. lacustriswere significantly reduced in fish infected byT. nodulosus, although the mean intensity of infections remained unaffected for any helminth species, while the mean abundance ofC. lacustriswas significantly reduced in plerocercoid-affected perch. Differences in site selection and individual interactions between the four helminth species in the intestine ofT. nodulosus-infected and non-infected perch were rarely observed.

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

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.

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

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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