Agonistic Behavior of Young Perch Perca fluviatilis: The Effects of Fish Size and Macroparasite Load

— The paper reports the study of macroparasite load and aggressiveness of the European perch Perca fluviatilis juveniles of different size captured in the Rybinsk Reservoir (Volga River). A total of 13 macroparasite species have been identified with the Tylodelphys sp . and Ichthyocotylurus sp. trem...

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Bibliographic Details
Published in:Journal of ichthyology 2021-05, Vol.61 (3), p.476-481
Main Authors: Slivko, V. M., Zhokhov, A. E., Gopko, M. V., Mikheev, V. N.
Format: Article
Language:English
Subjects:
Aggressive behaviour
Agonistic behavior
Agonistic behaviour
Biomedical and Life Sciences
Disease transmission
Fish
Fish parasites
Ichthyocotylurus
Juveniles
Life Sciences
Parasites
Perca fluviatilis
Statistical analysis
Triaenophorus nodulosus
Tylodelphys
Zoology
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Summary:— The paper reports the study of macroparasite load and aggressiveness of the European perch Perca fluviatilis juveniles of different size captured in the Rybinsk Reservoir (Volga River). A total of 13 macroparasite species have been identified with the Tylodelphys sp . and Ichthyocotylurus sp. trematodes and the Triaenophorus nodulosus cestode being the most abundant ones. A statistically significant correlation between the invasion intensity and fish size and aggressiveness has been found only for T. nodulosus . The possible mechanisms underlying T. nodulosus plerocercoid effects on the size and behavior of their fish hosts, the parasite transmission to the final host, and phenotypic differentiation in perch populations are discussed.
ISSN:0032-9452
1555-6425
DOI:10.1134/S0032945221030127