• Korean journal of applied entomology
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• v.60 no.3
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• pp.323-329
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• 2021

This study investigated the seasonal distribution of ticks in Boeun, Chungbuk, South Korea, from 2016 to 2020. Over the five-year period, ticks were collected annually from four different sites. A total of 17,704 ticks belonging to three tick species (Haemaphysalis longicornis, Haemaphysalis flava, and Ixodes nipponensis) were collected. H. longicornis was the dominant species across all four sites with the highest density of 68.40% of the total collected specimens, followed by H. flava (3.53%) and I. nipponensis (0.06%). The larvae of unidentified species were also collected: 11.81 T.I. (28.01%). The H. longicornis population peaked during the spring season (May-June), whereas the larval population peaked during August and September. H. longicornis was collected the most from four sites (coniferous forest, broad-leaf forest, mountain path, and copse), with the exception of the larvae, which was collected the most in grassland and grave. H. flava was collected from all sites, but in a small proportion. The SFTS virus was not found in any of the 828 pools of ticks during 2016-2020. Based on the results of this study, the continuous surveillance of the tick population is recommended to mitigate the spread of diseases by these vectors.

• Korean journal of applied entomology
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• v.61 no.1
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• pp.91-100
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• 2022

Ticks are the arthropod vector capable of transmitting diverse pathogens, which include bacteria, viruses, protozoan and fungi. Ticks are able to survive under stressful environmental conditions. One of evolutionary outcomes of these obligatory hematophagous arthropods is the survival for extended periods of time without a blood meal during off-host periods. Water conservation biology and heat tolerance have allowed ticks to thrive even under high temperatures and low relative humidity, thus they have become highly successful arthropods as they are distributed globally. Tick osmoregulatory physiology is a complex mechanism, which involves multiple osmoregulatory organs (salivary glands, Malpighian tubules, hindgut and synganglion) for the acquisition and excretion of water and ions. Blood feeding and water vapor uptake have been early reported as the primary passages for ixodid tick to acquire water. Recently, we have learned that ticks can actively drink environmental water allowing hydration. The acquired water can be traced to the salivary glands (type I acini) and the midgut diverticula. This opens new avenues for tick management through the delivery of toxic agents into their drinking water, in addition to an alternative strategy for the study of tick physiology. Here we address the osmoregulatory physiology in the ixodid ticks as a potential target physiological mechanism for tick control. We discuss the implications of water drinking behavior for tick control through the delivery of toxic agents and discuss the dermal excretion physiology as an additional pathway to induce tick dehydration and tick death.

• KOREAN POULTRY JOURNAL
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• v.34 no.12 s.398
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• pp.126-127
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• 2002

닭에서 진드기(mite)와 이(lice)는 가장 일반적인 외부기생충이다. 이(lice)는 닭의 피, 깃털, 피부, 비듬 등을 영양분으로 살아간다. 미국 캘리포니아 대학(University of Califonia)에서의 실험에 의하면 이(lice)를 효과적으로 퇴치하기 위해서는 이(lice)종류를 정확히 확인한 후 그에 알맞은 약제를 선택해야 효과를 볼 수 있는 것으로 나타났다. 조류에 기생하는 진드기들은 모두가 동일 종(種)인 반면, 이(lice)는 닭, 칠면조, 꿩, 비둘기, 메추리에 기생하는 종이 모두 다르다. 이들외부 기생충들은 감염정도가 심할 경우 축체의 건강을 해치고 생산성을 저하시킬 뿐만아니라 폐사까지도 가져 올 수 있다. 이(lice)와 진드기를 퇴치하기 위해서는 닭뿐만 아니라 시설물에까지 살충제를 살포 해야한다. 우선 이들 외부기생충의 종을 알아낸 후 약제 선택을 해야 하는데. 예를 들면, 이(lice)와 진드기 모두에 효과적인 약제를 사용 할 수 있으나 진드기의 생활 주기는 이(lice)보다 짧기 때문에 사용시기를 달리 해야 한다.

• Parasites, Hosts and Diseases
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• v.35 no.1
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• pp.1-8
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• 1997

A total of 135 hard ticks consisting of 2 species of 2 genera, 117 Hasmcphvsnlis filava and 18 Ixones tcnuki, were collected from a Korean raccoon dog (Nwctereutes procvonoines koreenis) caught at the Moaksan (Mt.), Chollabuk-do, Korea in March 1995. It is the first record that I. tnnuki appears in the Korean fauna.

• The Korean Journal of Zoology
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• v.12 no.2
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• pp.39-40
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• 1969

韓國産 鳥類에 寄生하는 진드기에 關하여서는 지금까지 硏究된바 없다. 著者는 韓國産 鳥類 진드기를 採集 同定한 結果 Ixodes signatus 가 韓國未記錄種임이 밝혀졌으므로 이에 發表한다.

• Korean Journal of Veterinary Research
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• v.21 no.2
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• pp.65-72
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• 1981

Amblyomma testudinarium Koch', 1844, previousely known to occur in India, Sri Lanka, Burma, Thailand, Malaysia, Indonesia, Indochina, the Philipines, Taiwan and Japan, is here firstly discovered and recorded in Korea. A male specimen was collected from grazing Frisian cattle of the Dae Weon Farm on Jeju Island by a local veterinary official on the 28th June in 1981. The specimen was examined at the institute of Veterinary Research in Anyang and was identified as A. testudinarium. The morphological characteristics of the male specimen were redescribed. A tota1 of 18 species of ticks belonging to 7 genera, such as, Argas, Amblyomma, Boophilus, Dermaccntor, Haemaphysalis, Hyalomma and Ixodes, has now been recorded to occur in Korea.

• Biomedical Science Letters
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• v.4 no.2
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• pp.113-120
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• 1998

To investigate the distribution of Borrelia burgdorferi and human granulocytic ehrlichiosis (HGE) agent in ticks, adult ixodid ticks of Ixodes spp. and Haemaphysalis spp. were collected from the high mountain areas of Kangwon Province. Using DNAs extracted and purified in the collected ticks, polymerase chain reaction (PCR) was performed to amplify the specific nucleotide sequences of both agents. Of the 516 ticks, a total of 68 (13.2%) ticks was positive for Borrelia burgdorferi sensu lato with PCR analysis (2 for B. burgdorferi sensu stricto； 1 for B. afzelii；33 for B. garinii； 8 for B. tanukii；4 for B. turdae). However a little more than half of PCR-positive ticks (37/68) was found to be positive in the southern blot analysis with Bl6S oligonucleotide probe. One hundred and one (19.2%) ticks were positive for Ehrlichia spp. in PCR, and a quarter of them (25/101) was positive in southern blot with El6S oligonucleotide probe. But none of them was found to be the DNA of HGE agent. And 0.6% (3/516) ticks were positive for both of B. burgdorferi sensu late and Ehrlirhia spp. These findings might implicate the possibility of the outbreak of Iyme borreliosis and ehrlichiosis in Korea, and more extensive studies may be need for the diagnosis of multiple tick-borne diseases.

• Korean Journal of Poultry Science
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• v.50 no.4
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• pp.267-272
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• 2023

This study was conducted to investigate the effect of integrated pest management (IPM) with 3point 5score microscopic monitoring method for laying farms infected with poultry red mites. A total of 8 laying farms infected with poultry red mites were divided into two treatments: 1) integrated pest management with 3point 5score microscopic monitoring method and 2) normal pest management with 3point 5score microscopic monitoring method. The results revealed that there is no significant difference between the groups with respect to the score of poultry red mites not only regardless of disinfection for the laying farms but also from week 4 to week 20 (P>0.05). However, the farm with IPM had a lower (P<0.05) score than those with the normal pest management method on week 24. Based on the result of the present study, controlling the presence of poultry red mites using IPM, along with consistent monitoring and supplementation using the 3point 5score microscopic monitoring method, is deemed effective in reducing the ultimately targeted infection rate of poultry red mites.

• Korean Journal of Clinical Laboratory Science
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• v.48 no.3
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• pp.242-246
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• 2016

The distribution and population density of rodents and chigger mites were investigated between April 2013 and November 2013 in the Gokseong-gun of Jeollanam-do, Korea. A total of 79 rodents were collected using Sherman collapsible traps, and among them, 73 were Apodemus agrarius (92.4%), 4 were Crocidura lasiura (5.0%), and 2 were Microtus fortis (2.5%). Sixty-eight out of the 79 rodents were parasitized by chiggers, showing an infestation rate of 86.0% and a chigger index of 74.5; the chigger index of A. agrarius was 75.4. From the trapped field rodents, 5,063 chigger mites were collected and identified with 6 species of 2 genera. Leptotrombidium scutellare was the dominant species with 3,535 chiggers (69.8%), followed by L. pallidum with 777 chiggers (15.3%). This results showed that the distribution of chigger mites differ in dominant species according to seasons. L. pallidum was the predominant chigger collected in April (34.3%), May (70.0%), and June (55.1%); whereas L. scutellare was the predominant chigger collected in September (75.5%), October (71.8%), and November (74.2%).

• The Korean Journal of Zoology
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• v.9 no.2
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• pp.10-11
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• 1966

한국산 Haemaphysalis 속 진드기는 Ogura and Takada (1927), Akasawa (1938), Jishida(1936), Itagaki Noda, Yamaguchi (1944) 등에 의하여 Haemaphysalis bispinosa, H. campamulata, H. flava의 3 종이 보고되었다. 저자가 1963년 6월 이후 채집한 진드기류를 정리한 결과 Haemaphysalis cornigera , H. Kutchensis 가 한국미기록종임이 밝혀졌으므로 이에 발표하는 바이다.