Occurrence and Spatial Distribution of Dibothriocephalus Latus (Cestoda: Diphyllobothriidea) in Lake Iseo (Northern Italy): An Update

International Journal of Environmental Research and Public Health
Vasco MenconiMarino Prearo

Abstract

Dibothriocephalus latus (Linnaeus, 1758) (Cestoda: Diphyllobothriidea; syn. Diphyllobothrium latum), is a fish-borne zoonotic parasite responsible for diphyllobothriasis in humans. Although D. latus has long been studied, many aspects of its epidemiology and distribution remain unknown. The aim of this study was to investigate the prevalence, mean intensity of infestation, and mean abundance of plerocercoid larvae of D. latus in European perch (Perca fluviatilis) and its spatial distribution in three commercial fishing areas in Lake Iseo (Northern Italy). A total of 598 specimens of P. fluviatilis were caught in 2019. The total prevalence of D. latus was 6.5%. However, there were significant differences between areas (10.2% North; 7.3% Center; 1.5% South) (Chi-square test, p = 0.0018). The mean intensity of infestation ranged from 1 larva in southern area to 1.2 larvae in both the central and northern (Pisogne) areas. In addition, the mean abundance ranged from 0.02 in the southern area to 0.26 in the northern area (Pisogne). The total number of larvae (anterior dorsal-AD = 21; anterior ventral-AV = 1; posterior dorsal-PD = 15; posterior ventral-PV = 5) differed significantly between the four anatomical quadrants (Kruskal-Walli...Continue Reading

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Feb 27, 2020·International Journal of Environmental Research and Public Health·Vasco MenconiMarino Prearo

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Datasets Mentioned

BETA
MT479180

Methods Mentioned

BETA
PCR
electrophoresis

Software Mentioned

GraphPad
GraphPad Prism
MEGA BLAST

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