• Title/Summary/Keyword: 펭귄

Search Result 15, Processing Time 0.024 seconds

Metagenomic Analysis of Antarctic Penguins Gut Microbial Dynamics by using Fecal DNA of Adélie (Pygoscelis adeliae) and Emperor (Aptenodytes forsteri) Penguins in Ross Sea, Antarctica (남극 로스해 지역의 아델리펭귄과 황제펭귄 분변 유전자를 활용한 남극 펭귄 장내 미생물의 메타지놈 분석)

  • Soyun Choi;Seung Jae Lee;Minjoo Cho;Eunkyung Choi;Jinmu Kim;Jeong-Hoon Kim;Hyun-Woo Kim;Hyun Park
    • Journal of Marine Life Science
    • /
    • v.8 no.1
    • /
    • pp.43-49
    • /
    • 2023
  • This study applied a metagenomic analysis of the penguins' gut microbiome from fecal samples of Adélie Penguin (Pygoscelis adeliae) and Emperor Penguin (Aptenodytes forsteri) living along the Ross Sea, Antarctica. As a result of taxonomic analysis, 7 phyla and 18 families were mainly present in the gut microbiome of Adélie and Emperor penguins. To assess microbial diversity, we performed alpha diversity and OTU abundance analyses. It was confirmed that the Adélie Penguin's gut microbial species had a higher diversity than Emperor Penguin's. Based on the Beta diversity analysis using PCoA, differences were observed in the clustering between Adélie and Emperor penguins, respectively. Through the KEGG pathway analysis using PICRUSt, the nucleoside and nucleotide biosynthesis pathway was the most prevalent in Adélie and Emperor penguins. This study enabled a comparison and analysis of the composition and diversity of the gut microbiome in Adélie and Emperor Penguins. It could be utilized for future research related to penguin feeding habits and could serve as a foundation for analyzing the gut microbiomes of various other Antarctic organisms.

펭귄사 마케팅 이사 "북셀러"지 통해 새로운 판매전략 제언

  • Yu, Eun-Yeong
    • The Korean Publising Journal, Monthly
    • /
    • s.138
    • /
    • pp.22-23
    • /
    • 1993
  • 출판업은 다른 매체로부터 점점 더 강력한 메시지를 받게 될 소비자들의 요구와 기대에 부합하여야 한다. 펭귄(Penguin)사의 마케팅 이사인 앤드류 웰험(Andrew Welham)은 출판인들과 서적상들이 그들의 마케팅 방법을 가능한 한 빨리 바꿔야 한다고 촉구한다. 이번 호에는 웰험이 "북셀러"지 최근호를 통해 발표한 출판계의 새로운 마케팅 과제에 관한 글을 요약 정리한다.

  • PDF

The Species of Penguins and Penguins Occurring in the Vicinity of King Sejong Station (남극 세종기지 부근에 출현하는 펭귄)

  • Chang, Soon-Keun
    • Ocean and Polar Research
    • /
    • v.21 no.2
    • /
    • pp.137-147
    • /
    • 1999
  • Penguins are one of the key constituent organisms in the Antarctic ecosystem. A total of 18 species of penguins occur only in the southern hemisphere from the Galapagos Archipelago to southern area off Australia and New Zealand, South Africa, South America, and the islands scattered in the Southern Ocean to the coast along the Antarctic Continent. In the Antarctic Treaty area, there are only 5 species of penguins such as Emperor (Aptenodytes forsteri), Gentoo (Pygoscelis papua ellsworthi), Adelie (P. adeliae), Chinstrap (p. antarctica), and Macaroni (Eudyptes chrysolophus) penguins. Two additional species, the King (Aptenodytes patagonicus patagonicus) and Rockhopper (Eudyptes chrysocome) penguins, however, are distributed within the Antarctic Convergence. In the vicinity of king Sejong Station located in King George Island, the South Shetland Islands off the Antarctic Peninsula, 5 species are observed, among which 2 Pygoscelis species such as the Gentoo and Chinstrap penguins hatch their eggs and raise their chicks at the rookery 2km south offing Sejong Station in summer. Adelie penguins hatch their chicks in other place in King George Island. One Emperor penguin roamed on the frozen Maxwell Bay which has been frozen every two or three years with the approximate thickness of 60cm. And one Macaroni penguin also visited the rookery in summer. We should carry out researches on the penguins occurring in the vicinity of King Sejong Station to monitor the environmental changes around King Sejong Station and the South Shetland Islands.

  • PDF

Preliminary Report on the Ecology of the Penguins Observed in the Cold Years and a Less Cold Year in the Vicinity of King Sejong Station, King George Island off the Antarctic Peninsula (남극 세종기지에서 추운 해와 덜 추운 해에 관찰된 펭귄들의 생태에 관한 1차보고)

  • Chang, Soon-Keun
    • Ocean and Polar Research
    • /
    • v.26 no.1
    • /
    • pp.87-101
    • /
    • 2004
  • This paper delineated the ecology including movement (departure from the rookery and returning to the rookery), egg-laying, and hatch of the penguins occurred in the cold years and a less cold year in the vicinity of King Sejong Station, King George Island off the Antarctic Peninsula. The years of 1988, 1991, 1992, and 1995 were selected as cold years and the year of 2001 was selected as a less cold year based on the mean annual temperature of the years. Gentoo Penguin (Pygoscelis papua) left their rookery in May, meanwhile some remained around the station. They returned in middle-September in the less cold .year, and returned in late-September to early-October in the cold years. Chinstrap Penguin (Pygoscelis antarctica) left their rookery in early-April in the cold years as well as in the less cold year without exception. They returned to the rookery in late-October to early-November in cold years, meanwhile in early-October in the less cold year. This difference in the returning of this bird seems to be related with the exposed sea water, i.e., sea ice condition to feed in the sea. The global warming will lead to the appearance of birds which breed in the Sub-Antarctic. For example, one pair of King Penguin (Aptenodytes patagonicus) was observed in the Maxwell Bay in austral summer. And a pair of snide-like bird was recently observed for the first time in November 2001 at the penguin rookery located in the Barton Peninsula, King George Island. And it will also lead to the disappearance of an Emperor Penguin (Aptenodytes forsteri) which appeared in the full winter when Maxwell Bay and Marian Cove were frozen. It seems that the behaviour of the penguins observed around the station shows the complex effects of the ecology of the birds in combination with the natural environments, which include feeding strategy and areas, animal Instincts, exposed terrain related to weather conditions, and globa1 warming. It is necessary to take further observation and carry out systematic researches on the birds including penguins around the station which show the ecology of the birds as well as the environmental changes.

A Study on Robot Design for the Protection of Children (어린이 보호 로봇디자인 연구)

  • Mun, keum-Hi;Han, hye-suk
    • Proceedings of the Korea Contents Association Conference
    • /
    • 2013.05a
    • /
    • pp.143-144
    • /
    • 2013
  • 어린이들은 어른에 비해 신체조건이나 정신조건이 연약해 특별한 보호가 필요하다. 어른이 돌보아주는 것이 마땅하지만 경제적 여건 등으로 혼자 남겨질 수 밖 에 없는 경우 이를 대신할 로봇이 필요하다. 어린이를 위협하는 위험요소들 중 환경오염과 안전사고에 대한 문제를 파악한 후 해결방안을 제시하였다. 로봇의 대상으로 어린이들이 선호하는 펭귄을 선정하였고 아이디어스케치, 3D 렌더링을 진행하여 최종모델을 제작하였다. 가상 시나리오를 통해 로봇의 사용 사례를 제시하였다.

  • PDF

남극 남쉐틀란드 군도 주변 해역의 크릴 분포 및 자원량

  • 강돈혁;이윤호;신형철;나정열
    • Proceedings of the Korean Society of Fisheries Technology Conference
    • /
    • 2001.05a
    • /
    • pp.391-392
    • /
    • 2001
  • 남극 크릴(Antarctic krill, euphausia superba)은 남극해의 생태계 피라미드의 하위부분을 차지하고 있지만 동물플랑크톤과 고래, 어류, 펭귄, 조류 등의 상위 포식자들을 연결하는 중요한 연결고리의 역할을 하고 있다. 많은 생체량과 남극해 전체에 골고루 분포하고 있는 크릴은 생태계 자체의 연구뿐만 아니라 수산자원 연구의 중요한 부분을 차지하고 있으므로 분포 위치, 자원량에 대한 연구가 최근 들어 활발히 진행되고 있다. (중략)

  • PDF