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. 2019 Oct;57(5):461-467.
doi: 10.3347/kjp.2019.57.5.461. Epub 2019 Oct 31.

Urogonimus turdi (Digenea: Leucochloridiidae) from the White's Thrush, Zoothera aurea, in the Republic of Korea

Hyeon Cheol Kim  1 , Eui Ju Hong  2 , Si Yun Ryu  2 , Jinho Park  3 , Do Hyeon Yu  4 , Joon Seok Chae  5 , Kyoung Seong Choi  6 , Cheolho Sim  7 , Bae Keun Park  2
Affiliations

Urogonimus turdi (Digenea: Leucochloridiidae) from the White's Thrush, Zoothera aurea, in the Republic of Korea

Hyeon Cheol Kim et al. Korean J Parasitol. 2019 Oct.

Abstract

Avian trematodes, Urogonimus turdi (Digenea: Leucochloridiidae), were collected from the intestine of wild birds, Zoothera aurea, 2013-2017 in the Daejeon Metropolitan City, Korea. The body was ellipsoidal, attenuated and/or round ends, 1,987-2,120 long and 819-831 µm wide. The oral sucker was subterminal, rounded anteriorly, and 308- 425×351-432 µm in size; the prepharynx and esophagus were almost lacking; pharynx was well-developed, 142- 179×78-170 µm in size; intestine narrow, bifurcating just after pharynx, ascending to the oral sucker before looping posteriorly and terminating near the posterior end; ventral sucker larger, in almost median, 536-673×447-605 µm and approximately 1.5 times larger than oral sucker. A phylogenetic tree constructed with 18S ribosomal RNA showed inter- and intraspecific relationships. Based on these morphological and molecular findings, we report here a U. turdi from White's thrushes in Korea.

Keywords: Korea; Urogonimus turdi; White’s thrush; Zoothera aurea.

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Conflict of interest statement

CONFLICT OF INTEREST

The authors declare no conflict of interest related to this study.

Figures

Fig. 1
Fig. 1
Adult worm of U. turdi. (A) Unstained. The intestine ascends at level of pharynx before looping posteriorly (circles). (B and C) Adult worm of Stained with Semichon’s aceto-carmine. U, uterus; LT, left testis; O, ovary; OS, oral sucker; OT, ootype; P, pharynx; RT, right testis; V, vitellaria; VS, ventral sucker. Vitellaria extend to level of right testis.
Fig. 2
Fig. 2
Posterior part of U. turdi adult. (A) Stained with Semichon’s aceto-carmine. (B) A cross sectioned posterior part stained with hematoxylin and eosin. (A) Note the cirrus (circle). (B) Posterior arrangement of genital organs. Arrow indicates cirrus.
Fig. 3
Fig. 3
Scanning electron micrographs of U. turdi. (A) Ventral view, evaginated cirrus (square). Note the size and location of the ventral sucker. (B) Higher magnification of evaginated cirrus. (C) Higher magnification of Laurer’s canal. (D) Dorsal view, Laurer’s canal (circle) is opened dorsally.
Fig. 4
Fig. 4
Phylogenetic tree (Neighbor Joining) based on sequence analysis.
See this image and copyright information in PMC

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