title: Polystoma okomuensis n. sp. (Monogenea: Polystomatidae) from Boulenger's striped frog, Phlyctimantis boulengeri (Perret, 1986) in Nigeria.
abstract: Polystoma okomuensis is described as a new species of the Polystomatidae parasitic in the urinary bladder of Boulenger's striped frog Phlyctimantis boulengeri in the Okomu National Park, Edo State, Nigeria. Although other African polystomes have been reported from Nigeria, this is the first to be described from the country and the first from Phlyctimantis. It is distinguished from other African Polystoma species by a combination of characters, including the body size, size and shape of the hamuli, size and shape of marginal hooklets and intestinal location. Phlyctimantis boulengeri was found to be infected in two of four seasonal lakes where specimens were caught with prevalences and mean intensities ranging from 14.3 to 22% and 1.0 to 1.5, respectively. Of the total number of 45 frogs examined, the prevalence was 15.6% and mean intensity 1.4.
authors.affiliation: Laboratory of Parasitology Research, Department of Animal and Environmental Biology, Faculty of Life Sciences, University of Benin, P.M.B. 1154, Benin City, Nigeria.
authors.forename: M S O
authors.initials: MS
authors.lastname: Aisien
authors.affiliation: School of Environmental Sciences and Development, Potchefstroom Campus, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa.
authors.forename: L H
authors.initials: LH
authors.lastname: Du Preez
authors.affiliation: Laboratory of Parasitology Research, Department of Animal and Environmental Biology, Faculty of Life Sciences, University of Benin, P.M.B. 1154, Benin City, Nigeria.
authors.forename: A A
authors.initials: AA
authors.lastname: Imasuen
mesh_terms: D000825:Animal Structures / Q000033:anatomy & histology; D000818:Animals; D001001:Anura / Q000469:parasitology*; D008853:Microscopy; D009549:Nigeria; D010986:Platyhelminths / Q000033:anatomy & histology / Q000145:classification* / Q000302:isolation & purification*; D015995:Prevalence; D014201:Trematode Infections / Q000453:epidemiology / Q000662:veterinary*; D001743:Urinary Bladder / Q000469:parasitology