Diagnosis and Prevention of Important Parasitic Diseases in Large Freshwater Fish (Part 2)
Abstract：8. Dactylogyrus Disease
(1) Main Symptoms. Dactylogyrus belongs to the class Monogenea of the phylum Platyhelminthes, order Dactylogyridea. The infected fish show darkened body color, slow movement, reduced appetite, and weakness; there is an increase in mucus on the gill filaments, and the gill plates appear grayish-white, causing breathing difficulties. Dactylogyrus generally measures 0.1–2 mm, and moves like a leech, with its head divided into four lobes. The anterior part of the body has four black eye spots, and the posterior end has a swollen, disc-shaped attachment organ containing one pair of central hooks, a connecting bar, and seven pairs of marginal hooks.
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Publication Date：2025-01-09
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 1-3 )