First Report of Gammaherpesvirus Skin Infection in Narrow-ridged Finless Porpoise (Neophocaena asiaeorientalis) in Korea
학위논문(석사) -- 서울대학교대학원 : 수의과대학 수의학과, 2022.2. 박세창. Narrow-ridged finless porpoise (Neophocaena asiaeorientalis) is one of the endemic and dominant cetacean species in Korean seawater. However, the population of the species has been decreased sharply in for the last 10 years. Accordingly, narrow-ridged...
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| Other Authors: | , , , |
| Format: | Doctoral or Postdoctoral Thesis |
| Language: | English |
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서울대학교 대학원
2022
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| Online Access: | https://hdl.handle.net/10371/181362 https://dcollection.snu.ac.kr/common/orgView/000000169169 |
| Summary: | 학위논문(석사) -- 서울대학교대학원 : 수의과대학 수의학과, 2022.2. 박세창. Narrow-ridged finless porpoise (Neophocaena asiaeorientalis) is one of the endemic and dominant cetacean species in Korean seawater. However, the population of the species has been decreased sharply in for the last 10 years. Accordingly, narrow-ridged finless porpoise was included as Endangered in the red list of the International Union for the Conservation of Nature (IUCN) in 2017. Despite the risk of extinction, pathological research of the porpoise has rarely been reported yet. To prevent population declines of the species, conservation medicine should be studied more for the health of wildlife, ecosystem, and human. In this study, I examined and detected a viral pathogen from infected skin of a narrow-ridged finless porpoise. A carcass of female narrow-ridged finless porpoise was stranded on the beach located at Jeju Island, South Korea. Twelve dermatitis lesions were spread on various sites of the body. The results of histopathological examination of the skin lesions indicated moderately to markedly thickened epidermis with accentuated rete pegs, amorphous eosinophilic material in the vacuoles, eosinophilic intranuclear inclusion bodies in the epidermal cells, and marked infiltrates of predominantly mononuclear cells within the dermis. Extracted DNA from the skin lesions and mammary gland were amplified respectively with multiple primers of herpesvirus, papillomavirus, Lacazia loboi, and poxvirus to do rule out diagnosis. Consequently, gammaherpesvirus was detected in the molecular analysis. The viral sequence contains same parts with the partial DNA polymerase gene of Balaenoptera acutorostrata gammaherpesvirus 2, dwarf sperm whale gammaherpesvirus, and Blainvilles beaked whale gammaherpesvirus. Gammaherpesvirus has been usually reported as the pathogen of genital and oral mucosae infections in cetaceans, and the skin infection has been rarely reported. This study is the first report of gammaherpesvirus infection in narrow-ridged finless porpoise in the ... |
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