https://repository.kopri.re.kr/handle/201206/14811 Fri, 03 Apr 2026 21:35:20 GMT 2026-04-03T21:35:20Z https://repository.kopri.re.kr/handle/201206/14943 Title: Metagenomic Analysis of Antarctic Penguins Gut Microbial Dynamics by using Fecal DNA of Adelie (Pygoscelis adeliae) and Emperor (Aptenodytes forsteri) Penguins in Ross Sea, Antarctica Authors: 최소윤; 이승재; 조민주; 최은경; 김진무; Kim, Jeong-Hoon; 김현우; 박현 Abstract: 본 연구에서는 남극 로스해 연안에 서식하는 아델리펭귄(Pygoscelis adeliae)과 황제펭귄(Aptenodytes forsteri)의 분변 시료를 기반으로 펭귄 장내 미생물 메타지놈 연구를 수행하였다. Taxonomy 분석 결과, 아델리펭귄과 황제펭귄의 장내 미생물에는 주로 7개의 문(phylum), 18개의 과(family)가 존재하는 것으로 나타났다. 또한 미생물 다양성을 평가하기 위해 Alpha diversity 및 OTU abundance 분석을 수행한 결과, 전반적으로 아델리펭귄의 장내 미생물 다양성이 황제펭귄보다 높은 것을 확인하였고, PCoA를 기반으로 한 Beta diversity 분석을 통해 두 개체군 간 장내 미생물 군집에 차이가 존재함을 확인하였다. PICRUSt를 활용한 기능적인 차원의 KEGG pathway 분석을 통해서는 아델리펭귄과 황제펭귄 시료에서 nucleoside and nucleotide biosynthesis pathway가 가장 많이 존재하는 것을 확인하였다. 본 연구를 통해 남극 아델리펭귄과 황제펭귄의 장내미생물 구성과 다양성을 비교분석 할 수 있었다. 본 연구 결과는 향후 펭귄의 먹이 섭식 관련 연구에 활용될 수 있으며, 더 나아가 다양한 남극 생물의 장내미생물 메타지놈 분석에 대한 기초가 될 수 있을 것이다. Sun, 01 Jan 2023 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/14943 2023-01-01T00:00:00Z https://repository.kopri.re.kr/handle/201206/14944 Title: A chromosome-level reference genome of the Antarctic blackfin icefish Chaenocephalus aceratus Authors: Lee Seung Jae; Kim Jinmu; Choi Eun Kyung; Jo Euna; Cho Minjoo; Kim, Jeong-Hoon; Park, Hyun Abstract: The blackfin Icefish (Chaenocephalus aceratus) belongs to the family Channichthyidae and the suborder Notothenioidei which lives in the Antarctic. We corrected the mis-scaffolds in the previous linkage map results by Hi-C analysis to obtain improved results for chromosome-level genome assembly. The final assembly analysis resulted in a total of 3,135 scaffolds, a genome size of 1,065.72 Mb, and an N50 of 33.46 Mb. 820.24 Mb, representing 88.88% of the total genome, is anchored to 24 chromosomes. The final gene set of 38,024 genes, including AFGPs, was annotated using RNA evidence, proteins, and ab-initio predictions. The complete percentage of BUSCO analysis is 92.7%. In this study, we aim to contribute to the study of polar fishes by improving the genome sequences of the blackfin icefish with the AFGP genes belonging to the Notothenoidei. Sun, 01 Jan 2023 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/14944 2023-01-01T00:00:00Z https://repository.kopri.re.kr/handle/201206/14839 Title: Antarctic Ecosystem Recovery Following Human-Induced Habitat Change: Recolonization of Adelie Penguins (Pygoscelis adeliae) at Cape Hallett, Ross Sea Authors: 김종우; 김유민; 오영근; Kim, Hyun-cheol; Kim, Jeong-Hoon Abstract: The human-induced disturbances in Antarctica have caused changes in the structure and function of ecosystems. The Cape Hallett station was established in 1957 and abandoned in 1973. The station was built inside a penguin colony, and during its operation, many penguins were deported. Herein, we compared the number of breeding pairs across different time periods after station decommission and environmental remediation. The station occupied 4.77 ha within the Adelie penguin breeding area, and 349 nests were identified inside the station border in 1960. In 1983, the station's territory decreased to 4.2 ha; meanwhile, 1683 breeding pairs were counted in the old station area. The past station area re-inhabited by Adelie penguins had 6175 nests in 2019. We assumed that recolonization might be particularly related to artificial mounds. The results of the present study confirm the recolonization of Adelie penguins at Cape Hallett for the first time, with visual analysis of spatial-temporal changes. Additionally, we suggest that reconstruction of the artificial or enhanced habitat may be required for successful restoration. Furthermore, continuous species monitoring with specific notes are needed with management interventions to protect Antarctic ecosystems, as well as the Ross Sea region MPA. Sun, 01 Jan 2023 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/14839 2023-01-01T00:00:00Z https://repository.kopri.re.kr/handle/201206/14931 Title: Rare Observation of a Living Southern Elephant Seal (Mirounga leonina) at Terra Nova Bay, Victoria Land Coast, Ross Sea, Antarctica Authors: 김종우; 오영근; 김유민; Kim, Jeong-Hoon Sun, 01 Jan 2023 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/14931 2023-01-01T00:00:00Z