A new species of Isospora (Apicomplexa: Eimeriidae) from eastern coachwhip, Coluber flagellum flagellum (Reptilia: Ophidia) from Oklahoma

作者：McAllister Chris T^*; Seville R Scott; Connior Matthew B

来源：Acta Parasitologica, 2015, 60(3): 466-470.

DOI：10.1515/ap-2015-0065

• Apicomplexa
• Coccidia
• taxonomy
• oocysts
• Reptilia
• Ophidia
• Isospora kiamichiensis
• Oklahoma
• Coluber flagellum flagellum

Between June 2013 and August 2014, four eastern coachwhips, Coluber flagellum flagellum were collected from Arkansas (n = 2) and Oklahoma (n = 2) and their faeces examined for coccidian parasites. One (25%) harboured an isosporan that we describe here as new. Oocysts of Isospora kiamichiensis sp. n. were spheroidal to subspheroidal with a uni-layered wall and measured (length x width, L x W) 25.0 x 22.2 mu m, with an L/W ratio of 1.1. A micropyle, oocyst residuum and polar granule were absent. Sporocysts were ovoidal, 13.9 x 9.4 mu m, with an L/W ratio of 1.5. A pronounced, button-like Stieda body was present as well as a substieda body. A sporocyst residuum was present as dispersed granules. This is the first isosporan and fourth coccidian reported from eastern coachwhip snakes. In addition, a single oocyst of an unknown choleoeimerian was recovered from this host.

• 出版日期2015-9