TY - JOUR TI - Redescription of Polyplastron alaskum Dehority, 1974 (Ciliophora, Entodiniomorphida), a Rare Rumen Ciliate Species from Domestic and Wild Sheep AU - Cedrola, Franciane AU - D'agosto, Marta AU - Martinele, Isabel AU - Júnio Pedroso Dias, Roberto TI - Redescription of Polyplastron alaskum Dehority, 1974 (Ciliophora, Entodiniomorphida), a Rare Rumen Ciliate Species from Domestic and Wild Sheep AB - The present study redescribes the species Polyplastron alaskum based on morphological characterization and provides, for the first time, data on its infraciliary bands pattern. Polyplastron alaskum was described in Alaskan dall montain sheep (Ovis dalli), and registered again only in the present study, 45 years later, inhabiting the rumen contents of domestic sheep (Ovis aries) in northeastern Brazil. All the taxonomic characters observed in the original description was observed in the present study. The infraciliary pattern in Polyplastron alaskum is slightly different of Diplodinium-type, observed in some ophryoscolecids belonging to the subfamily Diplodiniinae. VL - 2020 IS - Volume 59, Issue 2 PY - 2020 SN - 0065-1583 C1 - 1689-0027 SP - 61 EP - 65 DO - 10.4467/16890027AP.20.005.12673 UR - https://ejournals.eu/en/journal/acta-protozoologica/article/redescription-of-polyplastron-alaskum-dehority-1974-ciliophora-entodiniomorphida-a-rare-rumen-ciliate-species-from-domestic-and-wild-sheep KW - Trichostomatia KW - Brazilian domestic sheep KW - ophryoscolecid ciliate