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A New Coccidian Parasite, Isospora samoaensis, from the Wattled Honeyeater (Foulehaio carunculata) from American Samoa
並列摘要
A new species of Isospora is described from the feces of the wattled honeyeater, Foulehaio carunculata from American Samoa. Numerous oocysts of similar morphology were found in a single adult wattled honeyeater. Sporulated oocysts are ovoid, 28.9×26.1 (25-32×23-30) μm, with a smooth, colorless, bilayered wall; the inner wall is slightly thicker and darker than the outer wall. The average shape index is 1.1. No micropyle or oocyst residuum are present but the oocyst contains one or two ovoid polar granules. Sporocysts are ovoid, 17.1×10.9 (16-18×10-11) μm with a smooth single layered wall and an average shape index of 1.6. The Stieda body is broad, dome-like with a rather rectangular-shaped substieda body. Within the sporocyst is a large amorphous residuum composed of coarse granules and 4 randomly arranged, sausage-shaped sporozoites with a subspherical, posterior refractile body and a centrally located nucleus.
延伸閱讀
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