scholarly journals Descriptions of Two Digenean Trematodes Found from a Chinese Sea Snake, Laticauda semifasciata, in Republic of Korea

2020 ◽  
Vol 58 (3) ◽  
pp. 279-285
Author(s):  
Seongjun Choe ◽  
Il-Hun Kim ◽  
Min-Seop Kim ◽  
Hae Rim Lee ◽  
Youngjun Kim ◽  
...  

We intended to describe 2 digenean trematodes found from a Chinese sea snake, Laticauda semifasciata, as the new fauna in the Republic of Korea. The snake was caught offshore of Aewol-eup, Jeju-do, in August 2017. Two species of fluke were found in the lung and intestinal tract of the snake in the process of necropsy. They were identified as Pulmovermis cyanovitellosus Coil and Kuntz, 1960 and Harmotrema laticaudae Yamaguti, 1933, respectively based on the morphological characters. Pulmovermis cyanovitellosus showed elongated body with well-developed and elongated male genital system and compact vitelline. And H. laticaudae was characterized by linguiform body with heavily armed cirrus with excretory system. This is the first time both species have been reported and described off the Korean coast. We provide morphological descriptions with some comments on their biology and geographical distribution. In addition, the taxonomic validity of the genus Hydrophitrema Sandars, 1960 was discussed, in terms of morphological descriptions and host ranges. This study provides novel insight into digenean fluke species existing off the coast of Korea.

Author(s):  
Heung-Chul Kim ◽  
Ju Jiang ◽  
Jun Hang ◽  
Su Yeon Kim ◽  
Seok-Min Yun ◽  
...  

Abstract In a follow-up to the investigations of soft ticks identified from seabird nest soil and litter collected from coastal islands of the Republic of Korea (ROK), Ornithodoros sawaii and Ornithodoros capensis were assessed for the presence and identification of rickettsiae. Ticks collected from samples of 50–100 g of nest litter and soil from seabird nests were identified individually by morphological techniques, and species confirmed by sequencing of the mt-rrs gene. Subsequently, tick DNA preparations were screened for the presence of rickettsiae using a genus-specific nested PCR (nPCR) assay targeting the 17 kDa antigen gene. The amplicons from the 17 kDa assay and two additional nPCR assays targeting the gltA and ompB gene fragments were sequenced and used to identify the rickettsiae. A total of 134 soft ticks belonging to two species, O. sawaii Kitaoka & Suzuki 1973 (n = 125) and O. capensis Neumann 1901 (n = 9), were collected. Rickettsia lusitaniae DNA was detected and identified among O. sawaii ticks (n = 11, 8.8%) collected from nest litter and soil of the Japanese murrelet (Synthliboramphus wumizusume Temminck 1836) at Gugul Island along the western coastal area of the ROK. This study confirmed for the first time the presence of R. lusitaniae associated with O. sawaii collected from migratory seabird nests in the ROK.


Phytotaxa ◽  
2016 ◽  
Vol 286 (2) ◽  
pp. 75 ◽  
Author(s):  
RHIM RYOO ◽  
VLADIMÍR ANTONÍN ◽  
KANG-HYEON KA ◽  
MICHAL TOMŠOVSKÝ

Collections of Gymnopus sect. Impudicae from the Republic of Korea are evaluated. Three recorded species (G. densilamellatus, G. similis, and G. variicolor) are described as new for the science: Gymnopus densilamellatus is macroscopically characterized as having a brown to reddish brown, sometimes pale ochraceous and later whitish pileus and crowded lamellae. Gymnopus similis has an ochraceous-grey, brownish orange or brownish red pileus, and moderately distant, whitish, later dirty yellowish, greyish, or brownish orange or light brown lamellae. Gymnopus variicolor is characterized by a reddish brown, brownish red or violet brown pileus drying-up to light brown or brown, greyish brown or greyish red, later pale brownish orange lamellae, and greyish brown or greyish red pileus, grey-brown, light to reddish brown in upper part. Gymnopus dysodes is recorded for the first time in Korea. The morphological characteristics of the species are provided with a key for their identification. The taxonomic positions of all taxa are confirmed by the DNA sequences of the internal transcribed spacer region and the large subunit of ribosomal rRNA gene.


2020 ◽  
Vol 25 (11) ◽  
pp. 1994-2002
Author(s):  
Sung-Tae Chong ◽  
Heung-Chul Kim ◽  
Sang-Jae Suh ◽  
Terry A. Klein ◽  
Richard G. Robbins

Tick-borne disease surveillance was conducted by tick drag among uncut grasses/herbaceous vegetation and mixed forest habitats from 2018–2020 at US Army Garrison Humphreys, Pyeongtaek, the Republic of Korea (ROK). While identifying ticks collected in the spring of 2020, teratological anomalies were observed in nymphs of Haemaphysalis longicornis (in one specimen, partial twinning of the posterior idiosoma, resulting in 2 anuses; in a second, asymmetry of the idiosoma) and Ixodes nipponensis (7 legs). These teratological observations in H. longicornis and I. nipponensis are reported for the first time in the ROK.


Author(s):  
Jinho Kim ◽  
Seongyoon Lee ◽  
Jaiill Lee ◽  
Seokjung Kang

AbstractThis study was conducted to evaluate the performance of a contracting-out project for military base management in response to recent defense reforms in the Republic of Korea that require military forces to concentrate on operations and combat missions. In this study, the service quality perspective via SERVQUAL was applied to the ROK defense sector for the first time, with the soldiers viewed as customers receiving a service. In addition, to improve the effectiveness of the contracted services, the importance-performance analysis framework was employed to identify the tasks that required urgent attention. We conducted a large-scale survey of 2,112 uniformed members within pilot project units. To avoid problems such as insincere responses or low response rates, we held interviews with the officers managing the units on the subject of the importance and purpose of the questionnaire. As a result, it was found that the outsourcing of cleaning services was the most successful initiative, while mowing/landscaping had the most urgent tasks for improvement, with some respondents believing that reliability and assurance should be improved.


2020 ◽  
Vol 54 (1) ◽  
pp. 243-250
Author(s):  
Yu. S. Mamontov ◽  
T. I. Koroteeva ◽  
E. V. Sofronova ◽  
A. D. Potemkin

Frullania usamiensis is recorded for the first time for Russia from Kunashir Island, the southernmost island of the Greater Kuril Chain. It is the northernmost locality of the species, which was previously known from Japan (Honshu, Shikoku and Kyushu), China (coastal provinces Fujian and Liaoning) and the Republic of Korea. Frullania usamiensis is distinguished by (1) relatively large, emarginate or shallowly bilobed underleaves with obtuse lobes and mostly rounded sinus, (2) characteristic leaf lobules which are transversely elongated (when inflated), about × 1.5–1.9 as wide as long, with incurved rostral portion, and (3) smooth perianth with three keels. Description and photomicrographs of F. usamiensis from Kunashir Island are provided together with discussion on its ecology, variation and differentiation from having much in common F. kagoshimensis and F. taradakensis.


2014 ◽  
Vol 83 (2) ◽  
pp. 131-140 ◽  
Author(s):  
Ewa Pietrykowska-Tudruj ◽  
Marta Krajewska ◽  
Bernard Staniec

Abstract The pupa of Gabrius appendiculatus SHARP, 1910 is described and illustrated for the first time. A key to the known pupae of four Gabrius species applying newly defined morphological characters is provided.


Phytotaxa ◽  
2015 ◽  
Vol 219 (1) ◽  
pp. 78 ◽  
Author(s):  
Vladimir Antonin ◽  
Alfredo Vizzini ◽  
Enrico Ercole ◽  
Marco Leonardi

A new species, Strobilomyces pteroreticulosporus, is described based on two recent collections from the Republic of Korea. This new taxon is well characterized by morphological characters, and proved using rpb1 and ITS2 sequences. The variability of size and basidiospore ornamentation of the common species S. confusus is also discussed.


2014 ◽  
Vol 94 (7) ◽  
pp. 1465-1470 ◽  
Author(s):  
M. Caballer ◽  
J. Ortea

A new Scyllaeidae of the genus Notobryon is described from Guadeloupe, in the Lesser Antilles. Notobryon caribbaeus sp. nov. is characterized by having the anterior pair of body lobes remarkably bigger than the posterior pair, a stomach with eight triangular plates, a black and very wide ampulla, a lemon-shaped bursa copulatrix and a complex and well-differentiated sponge-like prostate. The first Caribbean records of Notobryon were provisionally assigned to the Australian species Notobryon cf. wardi and later transferred to Notobryon panamica. However, the structure of the male genital system is one of the main morphological characters to discriminate species in the genus and the presence of a prostate in N. caribbaeus sp. nov. distinguishes it from N. panamica, which remains confined to the eastern Pacific. Of the remaining four species in the world, only Notobryon bijecurum shares this character, but its external anatomy is different: it lacks a bursa copulatrix and the deferent duct is much shorter. Notobryon caribbaeus sp. nov. was captured in the context of an intensive expedition (‘Karubenthos’) organized by the Muséum National d'Histoire Naturelle, Paris and its description raises the total inventory of sea slugs in Guadeloupe to 150.


2019 ◽  
Vol 57 (6) ◽  
pp. 647-656
Author(s):  
Seongjun Choe ◽  
Ki-Jeong Na ◽  
Youngjun Kim ◽  
Dong-Hyuk Jeong ◽  
Jeong-Jin Yang ◽  
...  

<i>Isthmiophora</i> <i>hortensis</i> (Digenea: Echinostomatidae) is a dominant echinostome in animal reservoir hosts and humans in the Republic of Korea (Korea). We intended to investigate the infection status with this echinostome species in the several species of wild animals and describe the morphological characteristics in the faunistic view point. A total of 175 animal carcasses belonging to 3 families, i.e., Canidae, Felidae and Mustelidae, were collected from the southern regions of Korea from March 2010 to July 2017. <i>Isthmiophora</i> spp. worms were recovered from the small intestines of each animal under a stereomicroscope after washing of intestinal contents. <i>Isthmiophora</i> <i>hortensis</i> was recovered from 4 species of wild carnivores, i.e., <i>Nyctereutes</i> <i>procyonoides</i> (3/107: 2.8%), <i>Mustela</i> <i>sibirica</i> (11/31: 35.5%), <i>Meles</i> <i>lucurus</i> (2/3: 33.3%) and <i>Martes</i> <i>flavigula</i> (1/2: 50%). The other 3 carnivores comprising stray dogs, cat and leopard cat were negative for <i>I</i>. <i>hortensis</i> infection (0/2, 0/10 and 0/12, respectively). Specimens obtained from the <i>Lutra</i> <i>lutra</i> (6/8: 75%) were identified as a distinct species, <i>I</i>. <i>inermis</i>, by morphological comparison. <i>Isthmiophora</i> <i>inermis</i> has thinner body, elongate testes and different anterior limits of vitelline fields. Detailed morphological descriptions and comparisons with the morphological characteristics are provided. Conclusively, it was confirmed for the first time that 3 species of mustelid mammals, i.e., <i>M</i>. <i>sibirica</i>, <i>M</i>. <i>lucurus</i>, and <i>M</i>. <i>flavigula</i>, are to be the new definitive hosts of <i>I</i>. <i>hortensis</i> in Korea. Additionally, <i>I</i>. <i>inermis</i> is to be newly added in the Korean echinostome fauna.


Author(s):  
F. Al-Bagdadi ◽  
D. Hoyt ◽  
P. Karns ◽  
G. Martin ◽  
M. Memon ◽  
...  

The most frequently occuring abnormality of the male genital system in mammals is the failure of one or both testes to descend into the scrotum. The reasons for abdominal or inguinal retention of testes could be anatomic malformation, faulty development or hormone imbalance.Cryptorchidism has been associated with either greatly reduced or absent spermatogenesis (Kaueakami et al, 1984), and being a source of neoplasia. According to Stick (1980), germinal carcinoma cells have been believed to be the cause of teratomas in equine cryptorchid testicles. Neoplasia has been reported in descended testes of unilateral cryptorchid patients (Martin et al, 1981).No distinction has been made in relating the problem of cryptorchid testes to inguinal or abdominal retention. The purpose of this study is to record the morphological differences between inguinal and abdominal cryptorchid testes as an aid in diagnosis and prognosis.


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