• 제목/요약/키워드: Ecological evolution

검색결과 151건 처리시간 0.026초

First Report of Aphelenchoides bicaudatus (Nematoda: Aphelenchoididae) from South Korea

  • Kim, Jiyeon;Kim, Taeho;Park, Joong-Ki
    • Animal Systematics, Evolution and Diversity
    • /
    • 제32권4호
    • /
    • pp.253-257
    • /
    • 2016
  • The genus Aphelenchoides (Fischer, 1894) includes a diverse group of species, some of which are of economic importance. A. bicaudatus (Imamura, 1931) Filipjev and Schuurmans Stekhoven, 1941 is reported for the first time from South Korea, with a detailed redescription of the species. Specimens were collected from chrysanthemum (Chrysanthemum morifolium) leaves and shoot tips in South Korea. The species was identified by morphological traits and molecular sequencing. A bifurcated tail distinguishes A. bicaudatus from its congeneric species. To confirm species identification, we determined the partial 18S ribosomal DNA sequence of the specimens and compared with those obtained from other Aphelenchoides species available on GenBank.

Marine Molluscan Fauna of Jindo Island

  • Lee, Yucheol;Choe, Yeongjae;Shin, Youngheon;Kim, Taeho;Park, Jina;Park, Joong-Ki
    • Animal Systematics, Evolution and Diversity
    • /
    • nspc9호
    • /
    • pp.30-36
    • /
    • 2016
  • As a part of the commemorative joint faunal survey for the 30th anniversary of the Korean Society of Systematic Zoology, the molluscan fauna of Jindo Island was investigated based on sample collection from 6 localities from the 6 to the 8 of Jul 2016. A total of 114 molluscan species from 47 families were collected and identified. Among these, 42 species from 11 families are newly reported from Jindo Island and combining the previous records with the present study totals 157 species from 57 families. Distribution of species records indicates that marine biogeography of Jindo Island represent an overlapping zone for marine organisms which dwell in the Yellow sea and the southern sea areas of Korean waters.

Description of Larval and Pupal Stages of Tipula (Nippotipula) sinica (Diptera, Tipulidae) from South Korea with Ecological Notes

  • Jo, JaeIck
    • Animal Systematics, Evolution and Diversity
    • /
    • 제33권1호
    • /
    • pp.56-59
    • /
    • 2017
  • The external anatomy of the immature stages (last instar larva and pupa) of the crane fly, Tipula (Nippotipula) sinica Alexander, 1935 (Diptera: Tipulidae) is described and illustrated from specimens first collected in Korean peninsula (South Korea). Comments concerning natural history and microhabitats of larvae are provided. This is the first detailed description with illustrations for the last instar larva and pupa of Tipula (Nippotipula) sinica. Pupal characteristics resemble those of most species from advanced lineages within the subfamily Tipulinae. And, also it described with habitats and biological notes of Tipula (Nippotipula) sinica. Crane fly larvae, categorization as found in this survey indicate a taxonomic stream and are expected to help.

From So Simple a Beginning, From So Simple a Theory

  • Choe, Jae-Chun
    • Journal of Ecology and Environment
    • /
    • 제32권4호
    • /
    • pp.217-220
    • /
    • 2009
  • The year of 2009 marks the $200^{th}$ anniversary of Charles Darwin's birth and the 150th anniversary of the publication of his book, On the Origin of Species. Having survived the 150 years of hardening and tempering, Darwin's theory of natural selection is now more comprehensive and powerful than ever. It casts its shadow over nearly all academic disciplines and societal sectors. It truly revolutionized the way we look at the world and ourselves. In the midst of Darwinian revolution, however, Korea remains as a backward country as far as the understanding of Darwin and his theory is concerned. A variety of intellectual activities organized to celebrate the Year of Darwin is helping to narrow the gap. This article summarizes the kinds of such activities held in Korea this year and explains how Darwin made all this possible. To paraphrase the famous quotation by Theodosius Dobzhansky, I now dare to say, "Nothing in life makes sense except in the light of evolution".

Diversity of freshwater Cladoceran species (Crustacea: Branchiopoda) in South Korea

  • Jeong, Hyungi;Kotov, Alexey A.;Lee, Wonchoel;Jeong, Raehyuk;Cheon, Seuk
    • Journal of Ecology and Environment
    • /
    • 제38권3호
    • /
    • pp.361-366
    • /
    • 2015
  • We investigated cladoceran fauna from 71 study areas in South Korea. Sixty-two taxa were found, of which there were 30 planktonic and 25 littoral-benthic cladoceran species. In the present study, taxa of cladocera were identified by biographical traits. Species endemic to the Far East were found in the northernmost areas of South Korea, whereas Palearctic species were found in the southernmost areas. Generally, coexistence of cladoceran species in northern and southern areas was observed, implying possible faunistic complexes of cladocera in various areas of South Korea. We believe that further studies conducted in different habitats will greatly expand our knowledge of the biodiversity of cladocera in South Korea.

비피도박테리아의 분자생물학적인 연구 동향 (Genomic Research of the Genus Bifidobacterium and Its Application)

  • 김근배
    • Journal of Dairy Science and Biotechnology
    • /
    • 제25권2호
    • /
    • pp.21-28
    • /
    • 2007
  • Recently, the field of microbiology has been transformed by huge increasing number of publicly available whole-genome sequences. This sequence information has significantly enhanced our understanding of the physiology, genetics, and evolutionary development of bacteria. Among the gastrointestinal microorganisms, bifidobacteria represent the most important human commensals because of their contribution to maintaining a balanced gastrointestinal tract microbiota. In recent years bifidobacteria have drawn much scientific attention due to their use as live bacteria in numerous food products with various health-related claims. For this reason, these bacteria constitute a growing area of interest with respect to genomics, molecular biology, and genetics. Recent genome sequencing of a number of bifidobacterial species has allowed access to the complete genetic make-up of these bacteria. This review will focus how genomic data has allowed us to understand bifidobacterial evolution, while also revealing genetic functions that explains their presence in the particular ecological environment of the gastrointestinal tract.

  • PDF

A Review of the Genus Grapholita (Lepidoptera, Tortricidae) in North Korea

  • Byun, Bong-Kyu;Lee, Bong-Woo;Bae, Kwan-Ho;Lee, Kyung-Jae
    • Animal Systematics, Evolution and Diversity
    • /
    • 제28권4호
    • /
    • pp.291-296
    • /
    • 2012
  • In North Korea, the first report of the family Tortricidae, comprising 34 species, was made in 1969. It includes three species of the genus Grapholita (G. inopinata, G. molesta, and G. turionana). Among them, G. turionana is now placed under the genus Blastesthia. In the present study, a total of four species of the genus Grapholita are recognized from North Korea, based on material deposited in the Hungarian Natural History Museum, Hungary. Of them, Grapholita molesta (Busck), is reported for the first time from North Korea. In the present study, G. inopinata was not found. All the known species are enumerated with illustrations of adults and genitalia. Also a key for the genus is given.

Precopulatory Mate Guarding, Mating System and Pairing Parental Care in Hyale rubra (Peracarida; Amphipoda; Gammaridae)

  • Kim, Sung-Han
    • Journal of Ecology and Environment
    • /
    • 제31권1호
    • /
    • pp.17-21
    • /
    • 2008
  • Mating behaviour of the gammarid amphipod, Hyale rubra, was observed. H. rubra displayed precopulatory mate guarding: males clasped females with their gnathopods during copulation, forming a pair. Males also participated in embryo care during the incubation period. The population was small, and the sex ratio was almost equal. Energy allocation for mating effort and parental effort in the two sexes appear to be almost equal. The mating system was sequentially polygamous (or promiscuous) and there was conspicuous sexual dimorphism in the size of the gnathopod, which was used for mate guarding. However, there appears to be relatively weak sexual competition for mating opportunities despite conspicuous sexual dimorphism. H. rubra did not display territorial competition or external fertilization. Nevertheless, the male provided paternal care. Since H. rubra inhabit tide pools and live on algae, the polygamous mating system of the species can be explained by the polygyny threshold model. The evolution of mate guarding and parental care may have been favored by the species' low population density and harsh environments, an interpretation consistent with the optimality model.

건축공간의 경험구조로서 지원성 적용 연구 (Application of the Affordance as User Experience Behavior Setting for Architectural Design)

  • 김수진
    • 한국실내디자인학회논문집
    • /
    • 제13권6호
    • /
    • pp.48-56
    • /
    • 2004
  • The Affordance, discussed in the theory of ecological perception of environmental psychology, is the concept of perception that deals with inter-relationship between environment and human. It is a theory seeking for gradual evolution, with the change of user experience behavior and the space, by getting feed-backs from the analysis of perception of characteristics of 3-dimensional space and the user as moving entity. Although there has been many attempts to define the Affordance and apply its concept to the architecture, now there's a need to identify the Affordance in the real architectural space, represent Affordance of space and the user inter-relationship in the architecture and apply its design specifically, Thus, the purpose of this study is to present the methodology of applying Affordance in architectural space design by identifying the Affordance of space concept of human experience behavior in the architectural space and analyze its recognition process.

환경영향평가와 비용편익분석 연계의 유용성- 하천관리사업 및 습지간척사업을 사례로 - (A Study on Linking BCA into the EIA System Based on Two Cases)

  • 최미희
    • 환경영향평가
    • /
    • 제13권3호
    • /
    • pp.103-114
    • /
    • 2004
  • As most of environmental impacts caused by development projects are irrevocable, a thorough review is utmost necessary. Ecological-economic integrated approach inspired by Norgaard's co-evolution theory should be applied to the environmentally adjusted CBA, which plays a decisive role in the feasibility analysis. Based on case studies of NamHan River Management Project and Yeongsangang Wetland Reclamation Project, this paper attempts to show the usefulness of linking basic plan and implimentation design to EIA and suggests to integrate EACBA into the current EIA system institutionally as a more effective policy tool for realizing sustainable development in Korea.