On some cestodes parasitizing freshwater fish in Italy

Area of Science:

• Helminthology
• Ichthyoparasitology
• Freshwater Ecology

Background:

• Cestodes are common tapeworm parasites of fish.
• Understanding fish parasite fauna is crucial for aquatic ecosystem health.
• Previous surveys of freshwater fish cestodes in Italy are limited.

Purpose of the Study:

• To conduct a systematic survey of cestodes parasitizing freshwater fish in Italy.
• To document the species composition and distribution of tapeworms.
• To provide detailed descriptions and figures of recovered cestodes.

Main Methods:

• Systematic collection of fish from various freshwater bodies in Italy.
• Parasitological examination for cestode identification.
• Morphological analysis and detailed description of collected tapeworm specimens.

Main Results:

• Eight cestode species were identified: Monobothrium wageneri, Cyathocephalus truncatus, Triaenophorus nodulosus (plerocercoids and adults), Bothriocephalus acheilognathi, B. claviceps, Ligula intestinalis (plerocercoids), Schistocephalus sp. (plerocercoids), and Proteocephalus percae.
• Proteocephalus percae was recorded from Perca fluviatilis, representing a new record for Italian freshwater fish.
• All recovered tapeworms were described and illustrated.

Conclusions:

• The study expands the known cestode fauna of Italian freshwater fish.
• The findings contribute to the understanding of parasite biodiversity in Italian aquatic ecosystems.
• Regular monitoring of fish parasites is recommended to assess ecosystem health.