Flukes (Monogenean Parasites)

Flukes (Monogenean Parasites)

Basic Information image

Clinical Presentation

Etiology and Pathophysiology

• Monogeneans of the genera Dactylogyrus and Gyrodactylus commonly affect freshwater fish. Dactylogyrus predominantly affects the gills, whereas Gyrodactylus is more commonly found on the skin.

• Monogeneans affecting marine fish include the capsalids; species such as Benedenia and Neobenedenia can infest the skin and gills.

• Life cycles: Monogeneans may be oviparous (egg laying) or viviparous (live bearers). Transmission of monogeneans from fish to fish occurs primarily via direct contact. Most monogeneans have direct life cycles. Oviparous monogeneans (Dactylogyridae) release eggs into the water, which hatch into a free-swimming stage (oncomiracidium) that seeks out a fish host. Viviparous monogeneans (Gyrodactylidae) release live larvae that are immediately parasitic.

• Viviparous monogeneans can achieve rapid increases in population with doubling times as short as 24 hours.

Diagnosis image

Initial Database

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Jul 28, 2016 | Posted by in EXOTIC, WILD, ZOO | Comments Off on Flukes (Monogenean Parasites)

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