Parasitological survey reveals six parasite species in squalius squalus, highlighting helminth prevalence and infection intensity.
During a parasitological survey of Squalius squalus from Belčišta Wetland (Republic of North Macedonia), six parasite species found. These were Dactylogyrus sphyrna, Paradiplozoon ergensi, Gyrodactylus sp., Allocreadium isoporum, Proteocephalus torulosus and Pomphorhynchus bosniacus. The total helminth prevalence was 90.91%. The species with the highest prevalence were P. bosniacus (59.09%) and D. sphyrna (54.55%). The average intensity of infection was 6.08, with the highest values of D. sphyrna (7.83) and P. bosniacus (5.92). The present study is the first record of Proteocephalus torulosus in S. squalus in the Republic of North Macedonia. Among the parasite species found, the greatest pathological impact was associated with D. sphyrna, P. ergensi and P. bosniacus.
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Stojanovski et al. (2025) studied this question.
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