• The Plant Pathology Journal
• /
• 제31권2호
• /
• pp.186-191
• /
• 2015

Diatoms are a major component of the biological community, serving as the principal primary producers in the food web and sustaining oxygen levels in aquatic environments. Among marine planktonic diatoms, the cosmopolitan Skeletonema costatum is one of the most abundant and widespread species in the world's oceans. Here, we report the basic characteristics of a new diatom-infecting S. costatum virus (ScosV) isolated from Jaran Bay, Korea, in June 2008. ScosV is a polyhedral virus (45-50 nm in diameter) that propagates in the cytoplasm of host cells and causes lysis of S. costatum cultures. The infectivity of ScosV was determined to be strain- rather than species-specific, similar to other algal viruses. The burst size and latent period were roughly estimated at 90-250 infectious units/cell and <48 h, respectively.

• 한국동물학회지
• /
• 제24권1호
• /
• pp.1-7
• /
• 1981

초파리 自然集團의 逆位多型現象을 硏究하기 爲하여 全州近郊의 포도원에서 年間隔으로 三回 採集한 總 969 마리의 암컷을 分析한 結果 19個型의 異型接合逆位를 觀察했다. 19逆位中 全世界分布型 6個를 除外하고 나머지는 모두 地域型이었으며, 本集團의 平均逆位頻度는 38.9%였다.

• Mycobiology
• /
• 제41권4호
• /
• pp.248-251
• /
• 2013

Ganoderma is a cosmopolitan wood-rot basidiomycete that has been extensively studied for its pathogencity and medicinal properties. Identification of Ganoderma based on macro-microscopic features led to large number of synonyms which resulted in 250 taxonomic names. A Ganoderma species collected from Courtallam, Tamil Nadu was identified as G. cupreum. Phylogenetic analysis inferred from internal transcribed spacer rDNA region resolved the Indian isolate MYC1 as Ganoderma cupreum which clustered with Australian and Asian "cupreum" clade with 85% bootstrap support BS and shared 99% and 98% nucleotide similarity with Malaysian and Australian 'cupreum' respectively. This study represents the first molecular evidence of G. cupreum from Asian origin.

• Journal of Species Research
• /
• 제1권2호
• /
• pp.151-155
• /
• 2012

Spider fauna of Oksunbong located in Jecheon City, Chungcheongbuk-do, was surveyed provisionally from May to September in 1998. A total of 58 species of 40 genera in 18 families from 301 individuals of spiders were identified. Species richness of each family, there were 10 Araneid species (17.2%), followed by 9 Theridiid species (15.5%), and 8 Tetergnathid speices (13.8%). Zoogeographically, spider fauna of Oksunbong represented 1 cosmopolitan species (1.7%), 2 holarctic region species (3.4%), and 7 palearctic region species (12.1%). However, Korean endemic species were not collected during this survey. Thus it is suggested that spider fauna of Oksunbong was under northern regional influence.

• Journal of Species Research
• /
• 제2권2호
• /
• pp.127-144
• /
• 2013

An earthworm survey of Busan metropolitan area unearthed a dozen taxa in four families (including Enchytraeidae). Members of mostly common, cosmopolitan earthworm species-complexes were: Drawida cf. koreana Kobayashi, 1938, Amynthas cf. corticis (Kinberg, 1867), Aporrectodea trapezoides (Dug$\grave{e}$s, 1828) and Eisenia fetida (Savigny, 1826). Also found were Amynthas hupeiensis (Michaelsen, 1895), A. masatakae (Beddard, 1892) and Metaphire ryunome Blakemore, 2012 - the latter a new Korean record. New taxa are: moniligastrid Drawida songae yeongdo subsp. n.; megascolecid Amynthas carnosus roki subsp. n. which is compared to nominal taxon A. carnosus (Goto and Hatai, 1899) from Japan, to A. carnosus monstriferus (Kobayashi, 1936) stat. n. from Korea and to A. lichuanensis Wang and Qiu, 2005 stat. n. from China; plus lumbricid Eisenia japonica vaga subsp. n. deemed an objectively-based molecular taxon on its unique DNA COI gene barcode. Restoration of Eisenia xanthurus (Templeton, 1836) for E. andrei is mooted (in Appendix).

• Animal Systematics, Evolution and Diversity
• /
• 제14권3호
• /
• pp.279-291
• /
• 1998

1997년 8월에 거제도의 거미상을 조사하였다. 그 결과 20과 56속 92종을 채집하였으면 꼬마거미과, 왕거미과 그리고 늑대거미과 등이 우점종이고 일반적으로 일본산과 공통적인 종이 82종 (90.1%), 중국산과 공통적인 종이 75종(82.4%)으로 조사되었다. 또한 거제도와 덕적군도, 제주도, 울릉도, 진도, 백령도, 고금도의 거미상과 비교하여 그 유사성을 조사하였다.

• Parasites, Hosts and Diseases
• /
• 제51권1호
• /
• pp.43-49
• /
• 2013

Three species of tapeworms infect humans in their adult stage (Taenia solium, Taenia saginata and Taenia asiatica). The 3 are flat, opaque white or yellowish, and exceptional long segmented parasites, measuring 1 to 12 m in their adult stage. In this review, the development of the knowledge regarding the first species, mainly focused on understanding how the larval stage or cysticercus is transmitted to humans, is described. The second species is a cosmopolitan parasite that only causes taeniosis and not cysticercosis; therefore, it will not be included. Information on the third species, which is presently being produced, since this species was recognized as such only at the end of the 20th century, will be discussed at the end of this review.

• ALGAE
• /
• 제36권2호
• /
• pp.123-135
• /
• 2021

The taxonomy of green microalgae relies traditionally on morphological traits but has been rapidly changing since the advent of molecular methods. Stichococcus Nägeli is a cosmopolitan terrestrial algal genus of the class Trebouxiophyceae that has recently been split into seven lineages, which, along with Pseudostichococcus, comprise the Stichococcuslike group; there is a need to further characterize these genera, since they are morphologically enigmatic. Here we used organic osmolytes as chemotaxonomic marker to verify the phylogenetic position of Stichococcus-like strains and were also able to exclude a strain hitherto identified as Gloeotila contorta from this group. Stichococcus-like organisms, including those recently revised, were characterized by the production of the polyol sorbitol and the disaccharide sucrose in high amounts, as is typical of Prasiola-clade algae. The results demonstrate that organic osmolyte chemotaxonomy can support green algal taxonomic designations as fundamental research.

• Animal Systematics, Evolution and Diversity
• /
• 제37권4호
• /
• pp.345-348
• /
• 2021

The genus Eucephalobus Steiner, 1936, belonging to the family Cephalobidae Filipjev, 1934 (Cephalobomorpha), represents a group of bacterial feeding nematodes. Although this group is cosmopolitan and species-rich, only two species have been reported from South Korea. Eucephalobus iaculocaudatus Bostrom and Holovachov, 2011 was collected from natural forest in Chungcheongbuk-do, South Korea. This species shows typical morphological characters of the genus Eucephalobus, including a bicornuate labial probolae, cephalic probolae absent and three lateral incisures. However, E. iaculocaudatus is distinguished from other Eucephalobus species by conoid tail with a harpoon-shape mucro in female and ragged mucro in male. In this study, detailed morphological characters and morphometrics of E. iaculocaudatus are described and illustrated based on optical microscopy.

• Animal Systematics, Evolution and Diversity
• /
• 제36권4호
• /
• pp.309-315
• /
• 2020

The common rough woodlouse Porcellio scaber Latreille, 1804 is newly reported from South Korea with following diagnostic characteristics: the presence of distinct tubercles on body; the strongly developed lateral lobes of head; the presence of notch on tracheal field of pleopod 1 exopod; and distinctly short exopod of uropod. This species is reported to be cosmopolitan, but there were no taxonomic records of it in South Korea. All voucher specimens were collected from humid shaded areas adjacent to the eastern coast of South Korea. Organismal ecology and scanning electron microscope photographs are provided. In addition, the results of CO1 analysis of individuals representing the different color and morphological variations are provided.