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"testis"

Original Articles

Three Echinostome Species from Wild Birds in the Republic of Korea
Seongjun Choe, Dongmin Lee, Hansol Park, Mihyeon Oh, Hyeong-Kyu Jeon, Youngsun Lee, Ki-Jeong Na, Youngjun Kim, Hang Lee, Keeseon S. Eom
Korean J Parasitol 2014;52(5):513-520.
Published online October 22, 2014
DOI: https://doi.org/10.3347/kjp.2014.52.5.513

Three echinostome species, i.e., Patagifer bilobus, Petasiger neocomense, and Saakotrema metatestis, are newly recorded in the trematode fauna of the Republic of Korea. They were recovered from 3 species of migratory birds (Platalea minor, Podiceps cristatus, and Egretta garzetta), which were donated by the Wildlife Center of Chungbuk (WCC) and the Conservation Genome Resource Bank for Korean Wildlife (CGRB). Only 1 P. bilobus specimen was recovered from the intestine of a black-faced spoonbill (P. minor), and characterized by the bilobed head crown with a deep dorsal incision and 54 collar spines. Twenty P. neocomense were recovered from the intestine of a great crested grebe (P. cristatus), and they had a well-developed head crown with 19 spines and 2 testes obliquely located at the posterior middle of the body. Total 70 S. metatestis were collected from the bursa of Fabricius of 1 little egret (E. garzetta). It is characterized by stout tegumental spines covered in the entire leaf-shaped body, posterior extension of the uterus, presence of the uroproct and a well-developed head crown with 12 pairs of collar spines on each side. By the present study, these 3 echinostome species are newly added to the trematode fauna in Korea.

Citations

Citations to this article as recorded by  Crossref logo
  • Filling the void: Morphological and molecular phylogenetic analyses of helminths assemblage from the Egyptian egret Bubulcus ibis
    Nada A. Ibrahim, Ismail M. Shalaby, Mahi A. Ghobashy, Azza A. Taeleb, Elham A. Elkhawass
    Parasitology International.2025; 104: 102972.     CrossRef
  • The Nuclear Ribosomal Transcription Units of Two Echinostomes and Their Taxonomic Implications for the Family Echinostomatidae
    Yu Cao, Ye Li, Zhong-Yan Gao, Bo-Tao Jiang
    Biology.2025; 14(8): 1101.     CrossRef
  • First record of Patagifer bilobus (Rudolphi, 1819) Dietz, 1909 (Digenea: Echinostomatidae), with a morphological and molecular characterization from two threskiornithid species in Mexico
    Ana Lucia Sereno-Uribe, Marcelo Tonatiuh González-García, Mirza Patricia Ortega-Olivares, Alejandra López-Jiménez, Martín García-Varela, Leopoldo Andrade-Gómez
    Parasitology Research.2022; 121(7): 1921.     CrossRef
  • EXAMINATION OF HELMINTH PARASITES IN THE FECAL SAMPLES OF MAGPIES (Pica pica), JACKDAWS (Corvus monedula), AND ROOKS (Corvus frugilegus) IN THE VICINITIES OF VAN PROVINCE/TURKEY
    Ali Bilgin YILMAZ, Erkan AZİZOĞLU, Özdemir ADIZEL
    Commagene Journal of Biology.2020;[Epub]     CrossRef
  • Infections with Digenetic Trematode Metacercariae in Freshwater Fishes from Two Visiting Sites of Migratory Birds in Gyeongsangnam-do, Republic of Korea
    Woon-Mok Sohn, Byoung-Kuk Na
    The Korean Journal of Parasitology.2019; 57(3): 273.     CrossRef
  • Infections of Two Isthmiophora Species (Digenea: Echinostomatidae) in Wild Mammals from Republic of Korea with Their Morphological Descriptions
    Seongjun Choe, Ki-Jeong Na, Youngjun Kim, Dong-Hyuk Jeong, Jeong-Jin Yang, Keeseon S. Eom
    The Korean Journal of Parasitology.2019; 57(6): 647.     CrossRef
  • Echinochasmus swabiensis n. sp. (Digenea: Echinostomatidae) from Black Kite (Milvus Migrans Migrans) in Swabi District, Pakistan
    S. Suleman, M. S. Khan, X. Q. Zhu, A. M. Dharejo, E. C. Uwalaka, M. Shah, O. A. Adediran
    Folia Veterinaria.2018; 62(2): 5.     CrossRef
  • New Definitive Hosts and Differential Body Indices of Isthmiophora hortensis (Digenea: Echinostomatidae)
    Woon-Mok Sohn, Byoung-Kuk Na, Sung-Shik Shin
    The Korean Journal of Parasitology.2017; 55(3): 287.     CrossRef
  • Echinostoma macrorchis (Digenea: Echinostomatidae): Metacercariae in Cipangopaludina chinensis malleata Snails and Adults from Experimental Rats in Korea
    Woon-Mok Sohn, Byoung-Kuk Na
    The Korean Journal of Parasitology.2017; 55(5): 541.     CrossRef
  • Two Echinostome Species, Pegosomum bubulcum and Nephrostomum ramosum (Digenea: Echinostomatidae), from an Eastern Cattle Egret, Bubulcus ibis coromandus, in Republic of Korea
    Seongjun Choe, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Youngsun Lee, Eunju Kim, Ki-Jeong Na, Keeseon S. Eom
    The Korean Journal of Parasitology.2016; 54(4): 485.     CrossRef
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Ultrastructure of Spermatogenesis in the Testis of Paragonimus heterotremus
Nongnut Uabundit, Pipatphong Kanla, Phongphithak Puthiwat, Channarong Arunyanart, Kowit Chaiciwamongkol, Wanchai Maleewong, Pewpan M. Intapan, Sitthichai Iamsaard, Wiphawi Hipkaeo
Korean J Parasitol 2013;51(6):669-676.
Published online December 31, 2013
DOI: https://doi.org/10.3347/kjp.2013.51.6.669

Lung fluke, Paragonimus heterotremus, is a flatworm causing pulmonary paragonimiasis in cats, dogs, and humans in Southeast Asia. We examined the ultrastructure of the testis of adult P. heterotremus with special attention to spermatogenesis and spermiogenesis using scanning and transmission electron microscopy. The full sequence of spermatogenesis and spermiogenesis, from the capsular basal lamina to the luminal surface, was demonstrated. The sequence comprises spermatogonia, spermatocytes with obvious nuclear synaptonemal complexes, spermatids, and eventual spermatozoa. Moreover, full steps of spermatid differentiation were shown which consisted of 1) early stage, 2) differentiation stage representing the flagella, intercentriolar body, basal body, striated rootlets, and electron dense nucleus of thread-like lamellar configuration, and 3) growing spermatid flagella. Detailed ultrastructure of 2 different types of spermatozoa was also shown in this study.

Citations

Citations to this article as recorded by  Crossref logo
  • Molecular identification of the trematode P. ichunensis stat. n. from lungs of siberian tigers justified reappraisal of Paragonimus westermani species complex
    Anastasia N. Voronova, Konstantin S. Vainutis, Tatiana V. Tabakaeva, Mikhail V. Sapotsky, Nadezhda N. Kakareka, Yury G. Volkov, Irina V. Galkina, Mikhail Yu. Shchelkanov
    Journal of Parasitic Diseases.2022; 46(3): 744.     CrossRef
  • 10,766 View
  • 116 Download
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Brief Communication
Feminization and reduction of testicular weight in mouse sparganosis
Hyun-Jong Yang
Korean J Parasitol 2006;44(2):167-169.
Published online June 20, 2006
DOI: https://doi.org/10.3347/kjp.2006.44.2.167

After infection of male mice with the plerocercoids (spargana) of Spirometra mansoni, serum levels of estrogen and testicular weight were analyzed by enzyme-linked immunosorbent assay (ELISA) and weighing machine, respectively. The serum level of estrogen increased progressively in infected mice compared with normal controls, whereas the testicular weight of infected mice decreased significantly (P < 0.05). These results suggest that certain substances from spargana change the steroid hormone metabolisms in the host by unknown pathways, and chronic infection may contribute to change of the function of steroid hormone target organ, i.e., testis, in male mice.

Citations

Citations to this article as recorded by  Crossref logo
  • Changes of Serum Adiponectin Levels in Murine Experimental Sparganosis
    Hyun-Jong Yang
    The Korean Journal of Parasitology.2008; 46(2): 91.     CrossRef
  • 7,358 View
  • 73 Download
  • Crossref