title: The prevalence of helminth parasites in Pelophylax nigromaculatus (Anura: Ranidae) from Shanghai, China.
abstract: Parasites are ubiquitous members of biotic communities. To investigate the infective status of helminth parasites in Pelophylax nigromaculatus from Shanghai, 90 frogs were collected from July 2013 to July 2014 and examined for the presence of internal parasites. Of these, 86.67% (78/90) of frogs were infected with parasites, the total helminth intensity within infected frogs ranged from 1 to 367, and the mean intensity was 28.49. The infection rates and intensities were 78.89% and 22.89 for trematodes, 50.00% and 5.24 for nematodes, 13.33% and 3.92 for cestodes, and 41.11% and 8.49 for acanthocephalas, respectively. The majority (60.04%) of parasites were parasitic in the intestine, followed by urinary bladder (24.8%) and lungs (7.38%). Based on morphological features, 13 different species of helminth, including 9 undetermined species, were identified. The infective status of different species was significantly different. The most prevalent species were Diplodiscus nigromaculati (64.44%), Diplodiscus sp. (37.78%), Pomphorhynchus sp. (35.56%), Strongyloides sp. (33.33%). The mean infection intensity of Diplorchis nigromaculatus (139.25) was higher than the others' species ranged from 3.57-14.63. This is the first reported discovery of Pomphorhynchus sp. (Pomphorhynchidae Yamaguti, 1939) in frogs from China. These data provide the foundation for further analyses of parasites in this and other species of amphibians.
authors: Qifei
authors: Q
authors: Men
authors: Hongyu
authors: H
authors: Han
authors: Qiping
authors: Q
authors: Zhao
authors: Weili
authors: W
authors: Xia
authors: Hui
authors: H
authors: Dong
authors: Shunhai
authors: S
authors: Zhu
authors: Ziwen
authors: Z
authors: Wang
authors: Cong
authors: C
authors: Li
authors: Xuelong
authors: X
authors: Zhu
authors: Bing
authors: B
authors: Huang
mesh_terms: D000818:Animals; D002681:China / Q000453:epidemiology; D006374:Helminthiasis, Animal / Q000453:epidemiology / Q000469:parasitology*; D006376:Helminths / Q000145:classification / Q000302:isolation & purification*; D011898:Ranidae / Q000469:parasitology*