• 제목/요약/키워드: wild animals

검색결과 328건 처리시간 0.03초

Mercury poisoning in Eurasian river otter (Lutra lutra)

  • Gyurae Kim;Sangjin Ahn;Sang-Joon Lee;Ba-Ra-Da Koh;Soo-Young Choi;Ho-Seong Cho;Yeonsu Oh
    • Journal of Ecology and Environment
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    • 제47권2호
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    • pp.42-48
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    • 2023
  • An adult male Eurasian river otter (Lutra lutra) with ataxia and lethargy was rescued. Through the necropsy of this otter with neurological symptoms, a broad range of vascular damage caused by mercury toxicity in several organs, hepatocellular necrosis, and vacuolation in the brain. In mercury examination, liver, kidney, and hair showed values of 0.878 ± 0.027, 1.807 ± 0.049, and 5.712 ± 0.102 ㎍/g, respectively. Compared with certified reference material, it was confirmed that the concentration of mercury were 6.7 times, 13.7 times, and 43.3 times higher, respectively. When the symptoms and diagnosis results were comprehensively reviewed, this otter's demise was revealed due to mercury poisoning. The mercury concentration in the liver does not exceed the lowest observed effect level of 3.4 ㎍/g. However, even at low concentrations, long-term accumulation can cause symptoms including neuropathy, and the possibility that these heavy metals have accumulated in other wild animals cannot be ruled out. It seems that continuous monitoring using sentinel animals is necessary.

서울지역 사육 소의 큐열 및 톡소포자충 항체 보유율 조사 (Seroprevalence of Coxiella burnetii and Toxoplasam gondii in cattle in Seoul, Korea)

  • 김능희;김혜라;박형숙;김영섭;이주형
    • 한국동물위생학회지
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    • 제38권4호
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    • pp.233-239
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    • 2015
  • Both Q-fever and Toxoplasmosis are zoonosis. Q-fever occurs due to intracellular bacteria, while Toxoplasmosis is created by protozoan. Both of them have a wide range of host including livestock and wild animals and occur sporadically all over in the world. In this study, seroprevalence of Q-fever and Toxoplasmosis was investigated on cows bred in the area of Seoul where there was a fairly high possibility to occur, while vaccine was not used in Korea. As for experiment materials, cattle blood collected from 190 cows from February to September in 2014 was used ELISA. According to the result, there was a positive reaction on Q-fever from 18 cows out of total 190 cows (9.5%) and on Toxoplasmosis from 32 cows (16.8%). Seroprevalence of both diseases per age was turned out to be negative for those aged less than 2. In addition, it was shown to be positive on 4 cows out of 87 (4.6%) cows aged from 3 to 5, on 7 cows out of 30 cows (23.3%) aged from 6 to 7. Finally, it was shown to be positive on 7 cows out of 17 cows (41.2%) aged 8 or above. Toxoplasmosis was turned out to be positive on 1 cow out of 56 cows (1.8%) aged less than 2, on 6 cows out of 87 cows (6.9%) aged from 3 to 5, on 17 cows out of 30 cows (56.7%) aged from 6 to 7. In addition, it was turned out to be 8 cows out of 17 cows (47.1%) aged 8 or above. Seroprevalence of both diseases was turned out to be higher as age increased. Therefore, it seems that a wide range of investigation on the entire disease spreaders as well as livestock is required since infection of Q-fever and Toxoplasmosis, types of zoonosis, has continuously occurred, and the number of insects, wild animals, and stray animals serving as a role of spreading diseases by changes in seasons and environments has been gradually increasing in Korea.

여러 가지 비빔밥의 섭취가 생쥐의 각종 면역 활성에 미치는 효과 (The Effects of Several Types of Bibimbabs on Immune Activities in Mice)

  • 김남석;조문구;오석흥;최동성;정문웅;우자원;권진;김동훈;오찬호
    • 동아시아식생활학회지
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    • 제23권1호
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    • pp.23-30
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    • 2013
  • The purpose of this study was to evaluate the effects of several types of bibimbab (a Korean traditional meal of mixed rice with assorted vegetables), on various immune activities. Compared to control animals in a mouse model (given hamburgers), the oral administration of a portion of bibimbab containing wild plants significantly increased splenic B/T, thymic Th lymphocyte subpopulations, serum IFN-${\gamma}$ production, and enhanced hemagglutination titers up to 300%. Also, a consumption of mushroom-bulgogi bibimbab and Jeonju-style bibimbab markedly decreased compound 48/80-induced systemic anaphylaxis (immediate hypersensitivity), while bibimbab with wild plants inhibited SRBC-induced delayed type hypersensitivity. These results suggest that bibimbab with wild plants both up-regulate on immune activities and have anti-allergenic properties.

한(韓).중(中).일(日)의 식생활문화(食生活文化) 비교연구(比較硏究) (II) - $14{\sim}19$세기, 일상식품(日常食品)을 중심(中心)으로- (A Study on the Comparison Among Korea, China and Japan Food Cultures (II) - From 14C to 19C, on the Daily foods -)

  • 안명수
    • 한국식생활문화학회지
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    • 제12권3호
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    • pp.353-364
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    • 1997
  • A study was carried out to compare the daily foods which were eaten during $14{\sim}19$ century among Korea (Chosun dynasty), China (Ming, thing dynasty), and Japan (Muromachi, Edo era). Specially, in Ming, Ching dynasty, Noodles and dumpling were cooked very often and in Muromachi, Edo era, many kinds of beans were used so much, and there were many kinds of steamed rice to compare with Korea and China. Also, in Japan at these era Woodong, Morisoba, and Somyen were used as favorite foods harbitually. 1. The crops were used as staple foods in three countries such as steamed rice, gruel, noodle, dumpling, rice cake etc. commonly. 2. In Chosun, a roe deer, deer, antelope, and wild boar were more favoite dishes than cow, chicken, and dog, generally people enjoyed to eat pork and chicken. In Ming Ching, pork, chicken, goose, dove, lamb, ass, and duck were used as food materials, also wild animals such as deer, rabbit, and monkey etc. were used. In Muromach era, wild animal as racoon dog, otter, deer, antelope, bear, were used as food materials, in early Edo era (Yayoi and Momoyama), beef and pork were used as daily foods but they were eaten decreasingly in Edo era. So in Japan at those era, the dishes prepared of fishes were more than those of meats. For example, Sushi was made from that time, people all over the world are enjoying to have Sushi at present time. 3. Also in these era, many kinds of vegetables and fruits were used in three countries, and new kinds of vegetables and fruits were introduced from foreign countries, for example, red pepper, pumpkin, sweet potato, potato in Korea, corn, sweet potato, red pepper in China, and water melon, pumpkin, corn, red pepper, marmellow, sweet potato, sugar beet in Japan.

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한국에 서식하는 조류와 다람쥐의 Hantavirus 감염에 대한 생태학적 연구 (Ecologic Study of Hantavirus Infection in Avians and Squirrels in Korea)

  • 이연태;박철희;조규봉;송재옹;박은병;최승구
    • 대한바이러스학회지
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    • 제26권1호
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    • pp.101-106
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    • 1996
  • Hantavirus is the etiologic agent of hemorrhagic fever with renal syndrome (HFRS). It has been known that the natural reservoirs of Hantavirus are not only field mice but also other animals in parts of the world. In this study, to research on the host range of Hantavirus, immunofluorescent antibody against Hantavirus was investigated in wild birds from 1991 to 1992, duck from 1991 to 1992 and squirrels (Tamias sibiricus) in 1990 in Korea. The results were as follows: 1. Of total 179 wild birds of 14 species, Emberiza elegans elegans and Passer montanus dy-bowsky were antibody positive. The positive rates were 3.92% (2 out of 51) and 1.64% (1 out of 61), respectively. 2. The antibody titers of wild birds were 1:16 and 1:64 in Emberiza elegans elegans, 1:16 in Passer montanus dybowsky. 3. The positive rate of antibody in ducks was 2.3% (3 out of 129). 4. The positive rate of antibody in squrrels was 48.10% (38 out of 79). According these results, we newly showed that passer montanus dybowsky, domestic ducks and Tamias sibiricus possessed the antibody against Hantavirus.

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2016년 소양호에서 채집한 자연산 잉어과 어류와 갑각류의 법정전염병 및 기생충성 질병 모니터링 (Monitoring Pathogen Infection of Freshwater Cyprinid Fish and Crustacean in Soyang Lake in 2016)

  • 문성희;허준욱;차승주;황성돈;손맹현;권준영;권세련
    • 한국수산과학회지
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    • 제51권1호
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    • pp.47-53
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    • 2018
  • The presence of pathogens in wild fish is a potential threat to the fish being raised nearby fish farm. Surveillance of these pathogens in the wild is, thus, highly important to keep fish in the farm safe from serious communicable diseases. Fish and crustacean were sampled 4 times at Soyang Lake in 2016. Pathogens for five reportable communicable diseases including KHVD (koi herpesvirus disease), SVC (spring viraemia of carp), EUS (epizootic ulcerative syndrome) and WSD (white spot disease), and parasites were investigated. In Soyang Lake, pale chub Zacco platypus was the most abundant. Forty seven pale chub, 8 Korea piscivorous chub Opsarichthys uncirostris, 3 oily shiner Sarcocheilichthys variegatus wakiyae and 2 crucian carp Cyprinus carassius were investigated for detection of target diseases of fish. Seventeen Caridina denticulata denticulata, 12 Oriental river prawn Macrobrachium nipponense and 1 Chinese mitten crab Eriocheir sinensis were used for detection of WSD. As the result, reportable communicable diseases were not detected in all the freshwater animals. Dactylogyrus was detected in Korea piscivorous chub. Copepoda was also detected in pale chub and Korea piscivorous chub. Metacercaria was detected in the pale chub sampled in September and October. Those were not metacercaria of liver fluke Clonorchis sinensis.

Gene expression profiles of skin from cyclin dependent kinases 5-knockdown mice

  • Shanshan Yang;Dingxing Jiao;Tao Song;Ping Rui;Ruiwen Fan;Zengjun Ma
    • Animal Bioscience
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    • 제37권4호
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    • pp.567-575
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    • 2024
  • Objective: This study aimed to identify genes regulated by cyclin dependent kinases 5 (CDK5) that participate in hair pigmentation in mice. Methods: The mRNA expression profiles of skin samples from CDK5-knockdown mice were constructed using high-throughput RNA sequencing and compared with those of wild-type mice. Results: In total, 8,002 known genes were differentially expressed between CDK5-knockdown and wild-type mice. Of these, 3,658 were upregulated and 4,344 were downregulated in the skin of CDK5-knockdown mice. An additional 318 previously unknown genes were also differentially expressed, with 171 downregulated and 147 upregulated genes in the skin of CDK5-knockdown mice. Of the known genes expressed in mouse skin, 80 were associated with hair color, with 61 showing lower expression and 19 exhibiting higher expression in skin of CDK5-knockdown mice. Importantly, the expression of the tyrosinase-related protein 1 (TYRP1) and the calcium signaling pathway were also found to be regulated by CDK5, suggesting that pigmentation is regulated by CDK5 via the calcium signaling pathway and TYRP1. Conclusion: The transcriptome profiles obtained from the skin of CDK5-knockdown mice compared to wild-type mice provide a valuable resource to help understand the mechanism by which CDK5 regulates melanogenesis in mice and other animals.

외상 장애를 가진 반달가슴곰의 야생에서의 출산과 양육 특성 (Childbirth and rearing characteristics of an Asiatic black bear (Ursus thibetanus ussuricus) with trauma disorder in the wild)

  • 김정진;김태욱;최주열;채승훈;문광선;오홍식
    • 환경생물
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    • 제37권4호
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    • pp.467-473
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    • 2019
  • 야생동물의 신체부위의 절단은 야생에서 활동에 영향을 미칠 수 있으며, 특히 겨울철 동면기간에 새끼를 출산하는 반달가슴곰의 경우 겨울철 생존과 양육활동에 영향을 미칠 수 있다. 지난 2017년 지리산국립공원에 서식하는 반달가슴곰이 올무에 걸려 오른쪽 앞발 절단 수술을 하여 같은 해에 야생에 방사되어 2개체의 새끼를 출산하였다. 이 개체와 함께 같은 해에 출산한 암컷 5마리의 출산 및 양육기간 동안 계절별로 행동권을 분석한 결과, 활동 시기에는 다른 개체들에 비해 넓은 행동권과 많은 이동거리를 나타냈다. 이는 신체장애로 인한 먹이 활동과 새끼 양육에 따른 영향으로 추정된다. 다른 개체들에 비해 불리한 환경에서 자라난 반달가슴곰 새끼가 현재는 문제를 일으키지 않지만 지속적인 모니터링을 통해서 어미의 양육 학습의 성공여부를 파악할 수 있을 것이다. 이 연구결과는 여러 관점에서의 사람과의 갈등에 대한 장기적인 관리 방향을 설정하고 계획을 수립하는 데 활용될 수 있을 것이라 판단된다.

동.서양의 복식에 표현된 동물문양의 상징성에 관한 비교 연구 - 유교적 불교문화권과 그리스도교 문화권과의 비교를 중심으로 - (An analysis of symbols of animal patterns in oriental and occidental clothing - focusing on comparison of Buddhism- Confucianism and Christian cultural area -)

  • 이윤정
    • 한국생활과학회지
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    • 제15권3호
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    • pp.469-480
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    • 2006
  • Patterns in clothing symbolize some specific meaning that differs across cultures and religions, although patterns have been mostly used to realize human desires to overcome natural hazards in every culture or religion. This research aims to compare animal patterns of Korea (Confucian/Buddhism culture) with those of Byzantine (Christian culture), based upon a research method of literature survey. It is found through the research that both cultures used common patterns, such as dragon, butterfly, bat, honeybee, peacock, fish, and chicken. In the case of dragon patterns, Korea used it to symbolize emperor, dignity, or authority, while Byzantine used it for devil. Bat patterns had different symbolic meanings in both cultures: they mean happiness, longevity, prosperity or many off-springs in Korea while they mean misfortune or unhappiness in Byzantine. On the other hand, the rest of animal patterns, including butterfly, honeybee, peacock, chicken, had quite a similar symbolic meaning. Butterfly means change of life or beginning of new life in Korea, whereas it means resurrection in Byzantine. Honeybee symbolizes diligence, order, and cooperation. Many animal patterns were used in both cultures at the same time. Another difference can be found in terms of the kind of animals; for example, Korea used wild goose, pheasant, giraffe, deer, mandarin duck & turtle, while Byzantine used eagle, snake, pigeon. Of course, each and every animal has its own meaning, mostly positive. Except dragons and bats, both cultures have a similar meaning in most of animal patterns. Generally speaking, Korea used imaginary animals to pray for human happiness, but Byzantine used real animals to pray for resurrections.

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Impact of inland waters on highly pathogenic avian influenza outbreaks in neighboring poultry farms in South Korea

  • Ahmad, Saleem;Koh, Kyeyoung;Yoo, Daesung;Suh, Gukhyun;Lee, Jaeil;Lee, Chang-Min
    • Journal of Veterinary Science
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    • 제23권3호
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    • pp.36.1-36.14
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    • 2022
  • Background: Since 2003, the H5 highly pathogenic avian influenza (HPAI) subtype has caused massive economic losses in the poultry industry in South Korea. The role of inland water bodies in avian influenza (AI) outbreaks has not been investigated. Identifying water bodies that facilitate risk pathways leading to the incursion of the HPAI virus (HPAIV) into poultry farms is essential for implementing specific precautionary measures to prevent viral transmission. Objectives: This matched case-control study (1:4) examined whether inland waters were associated with a higher risk of AI outbreaks in the neighboring poultry farms. Methods: Rivers, irrigation canals, lakes, and ponds were considered inland water bodies. The cases and controls were chosen based on the matching criteria. The nearest possible farms located within a radius of 3 km of the case farms were chosen as the control farms. The poultry farms were selected randomly, and two HPAI epidemics (H5N8 [2014-2016] and H5N6 [2016-2017]) were studied. Conditional logistic regression analysis was applied. Results: Statistical analysis revealed that inland waters near poultry farms were significant risk factors for AI outbreaks. The study speculated that freely wandering wild waterfowl and small animals contaminate areas surrounding poultry farms. Conclusions: Pet birds and animals raised alongside poultry birds on farm premises may wander easily to nearby waters, potentially increasing the risk of AI infection in poultry farms. Mechanical transmission of the AI virus occurs when poultry farm workers or visitors come into contact with infected water bodies or their surroundings. To prevent AI outbreaks in the future, poultry farms should adopt strict precautions to avoid contact with nearby water bodies and their surroundings.