title: Pygidiopsis cambodiensis n. sp. (Digenea: Heterophyidae) from experimental hamsters infected with metacercariae in mullets from Cambodia.
abstract: Pygidiopsis cambodiensis n. sp. is described based on adult flukes recovered from Syrian golden hamsters experimentally infected with metacercariae from mullets (Liza macrolepis) purchased at a local fish market in Phnom Penh, Cambodia. The specimens were examined by light and scanning electron microscopy. Among the 13 species so far assigned to Pygidiopsis, the new species belongs to the summa-type (including Pygidiopsis pelecani, Pygidiopsis phalacrocoracis, Pygidiopsis piclaumoreli, Pygidiopsis plana, and Pygidiopsis summa) which lack circumoral spines and have vitelline follicles extending posteriorly from the level of the ovary some distance into the post-testicular space and the uterus not exceeding the acetabulum anteriorly. The new species differs from the other five species of the summa-type particularly in the morphology of the ventrogenital complex, including the genital sac, gonotyl, and gonotyl spines (= rodlets). The genital sac is well developed, sucker-like, slightly larger than the ventral sucker, muscular, and equipped with two gonotyls on the ventral side of the sac. Gonotyls are protruding pad-like, and the number of rodlets on the left gonotyl is four to five and that on the right gonotyl is 10-11 in two rows. This is the fifth Pygidiopsis species reported in Asia, following P. summa (Japan, Korea, and Vietnam), P. phalacrocorasis (Japan), P. pelecani (China), and Pygidiopsis marivillai (Philippines).
authors.affiliation: Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.
authors.forename: Woon-Mok
authors.initials: WM
authors.lastname: Sohn
authors.affiliation: Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.
authors.forename: Deok-Gyu
authors.initials: DG
authors.lastname: Kim
authors.affiliation: Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.
authors.forename: Bong-Kwang
authors.initials: BK
authors.lastname: Jung
authors.affiliation: Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.
authors.forename: Jaeeun
authors.initials: J
authors.lastname: Cho
authors.affiliation: Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea. cjy@snu.ac.kr.
authors.forename: Jong-Yil
authors.initials: JY
authors.lastname: Chai
mesh_terms: D000818:Animals; D002160:Cambodia; D006224:Cricetinae; D005260:Female; D005393:Fish Diseases / Q000469:parasitology* / Q000635:transmission; D006578:Heterophyidae / Q000145:classification* / Q000302:isolation & purification / Q000648:ultrastructure; D006801:Humans; D008647:Mesocricetus; D058488:Metacercariae; D008855:Microscopy, Electron, Scanning; D056910:Republic of Korea; D023701:Smegmamorpha / Q000469:parasitology*; D014201:Trematode Infections / Q000469:parasitology / Q000635:transmission / Q000662:veterinary*
keywords: Cambodia; Experimental hamster; Mullet; Pygidiopsis cambodiensis