Eimeria portovelhensis, Viana & Motta & Coutinho & Rocha, 2013

Viana, Lúcio André, Motta, Adarene Guimarães da Silva, Coutinho, Marcos Eduardo & Rocha, Carlos Frederico Duarte, 2013, Eimeria spp. (Apicomplexa: Eimeriidae) in Black Caiman Melanosuchus niger (Crocodilia: Alligatoridae) from the Amazon Region, Brazil, with a Description of Two New Coccidian Species, Acta Protozoologica 52 (4), pp. 283-289 : 285

Eimeria portovelhensis n. sp. ( Figs 3–4 )

Description of sporulated oocyst: Oocysts spheroidal, wall composed of two layers (n = 50), ~ 0.9 (0.9– 1.1) thick; outer is slightly sculptured, colorless, inner appears as a slightly dark line. Sporulated oocysts (n = 50) 19.5 × 19.1 (16–21), L/W ratio 1.0 (1.0); M, PG: both absent; OR: spheroidal globule, 9.0 × 7.8 (3–12 × 2–12), composed of globules of different size.

Description of sporocyst and sporozoites: Sporocysts spindle-shaped, (n = 48) 11.0 × 4.0 (8–13 × 2–5), L/W ratio 2.8 (2.6–4.5); SB: apparently double, one at each pole and with one filament curved at each pole; SSB, PSB: both absent; SR: spheroid compact mass composed of tiny granules. Distinctive feature of sporocyst: spindle-shaped and SB with one filament curved. Sporozoite with 2 large refractile bodies spheroid and located in middle and at posterior end.

Figures

Figs 1–6. Nomarski interference micrographs of sporulated coccidia oocysts found in black caimans faeces × 1,000. 1–2 – Eimeria nigeri n. sp.; 3–4 – Eimeria portovelhensis n. sp.; 5–6 – Eimeria paraguayensis. FIL – filament from the area of the Stieda body, OR – oocyst residuum, OW – oocyst wall, RB – refractile body, SB – Stieda body, SR – sporocyst residuum.