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The life cycle of Pygidiopsis ardeae Køie, 1990 (Digenea, Heterophyidae)
Køie, M. (1990). The life cycle of Pygidiopsis ardeae Køie, 1990 (Digenea, Heterophyidae). J. Parasitol. 76(4): 537-541
In: The Journal of Parasitology. American Society of Parasitologists: Lawrence, Kan., etc.,. ISSN 0022-3395, more
Peer reviewed article  

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Keywords
    Aquatic birds; Biological vectors; Euryhalinity; Hosts; Life cycle; Parasitism; Ardea cinerea Linnaeus, 1758 [WoRMS]; Gasterosteus aculeatus Linnaeus, 1758 [WoRMS]; Hydrobia Hartmann, 1821 [WoRMS]; Limanda limanda (Linnaeus, 1758) [WoRMS]; Platichthys flesus (Linnaeus, 1758) [WoRMS]; Pomatoschistus microps (Krøyer, 1838) [WoRMS]; Pungitius pungitius (Linnaeus, 1758) [WoRMS]; ANE, Denmark [Marine Regions]; Denmark [Marine Regions]; Marine; Brackish water; Fresh water

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  • Køie, M.

Abstract
    Ocellate cercariae, consistent with the description of Cercaria angularis , developing in rediae in Hydrobia ulvae and Hydrobia ventrosa (Prosobranchia, Hydrobiidae) from Denmark, were shown to be larvae of Pygidiopsis ardeae (Heterophyidae, Pygidiopsinae). Euryhaline fishes such as the sticklebacks Gasterosteus aculeatus and Pungitius pungitius , and the common goby Pomatoschistus microps are second intermediate hosts in Danish inlets. These species and the flatfishes Platichthys flesus and Limanda limanda were laboratory infected. Cercariae penetrated the gills where some encysted, but most scattered throughout the body via efferent branchial arteries and the dorsal aorta to encyst mostly in the mesenteries, spleen, and on the surface of other viscera. Twelve-week-old (15 C) metacercariae fed to domestic chickens and pigeons developed to adults of P. ardeae in < 4 days. Grey herons, Ardea cinerea , were naturally infected with P. ardeae , which was not found in gulls or cormorants from the same area and feeding on similar-fishes.

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