• Title/Summary/Keyword: 선충류

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Studies on the Important Nematodes in Korea 1. Some Nematodes Found in the Soil around the Root of Floral Plants in the Green-house (우리나라 농업상 중요한 선충류에 관한 연구 (I) 온실화훼류의 근부에서 발생되는 수종의 선충에 관하여)

  • CHOI YOUNG EYUN
    • Korean journal of applied entomology
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    • v.2
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    • pp.27-37
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    • 1963
  • 최근 농작물에 대한 각종 선충류의 피해가 주목되어 있는 실성에 비추어 필자는 선충류연구의 기초적 과제로서 온실내의 화훼류 근부에서 발견되는 선충류 중 농업상 비교적 중요하다고 인정되는 종류와 그밖에 몇 종류에 대하여 형태적인 특징을 기술하였다. 즉 취급된 종류들은 다음과 같다. 1. Meloidogyne arenaria Chitwood 2. Scutellonema coheni Andrassy 3. Paurodontus gracilis Thorne 4. xiphinema americaum Cobb 5. Rhabditis sp 6. Cephalobus sp 7, Diplogaster sp 그리고 이상 7종류의 기주식물 및 기생정도를 보면 Meloidogyne arenaria Chitwood는 Begonia에 만 기생하였고 그밖에 화훼류에는 기생을 볼수 없었다. Scutellonema choeni Andrassy는 꽃치자, 소펄, 이마리 리스, 제브리나에 가장 많이 발견되었고, Paurodonthus gracilis Thorne는 동백나무, 청목. 지내고사리, 카네이션, 충에서 가장 많이 발견되었다. 그리고 Xiphinema americanum Coob는 산호수, 서향, 코피나무, 시크라맨, 용설란, 동백 등에서만 발견되었으나 그중에 용설란, 동백에서 가장 많이 볼 수 있었다. Rhabditis sp.는 초본류 화훼류의 대부분에서 발견되었으나 그중에도 산세배리아에서 가장 많았다 Diplogaster sp는 대부분의 화훼류에서 발견되었으며 그중에 크로톤에 비교적 많았다. Cephalobus sp.는 전반적으로 발견되었으며 발견정도는 모두 비슷하였다. Monhystera app. , Mononchus spp. , Dorylaimus app. 등도 조사란 과반수의 화훼류들에서 발견되었으나 특히 많이 발견되는 화훼류는 없었다. 이상 선충류중 근류를 형성하여 피해가 가장 주목되는 Mceloidogyne arenaris Chitwood에 대해서 온실내에서 그의 유일한 기주식물인 Begonia의 품종별 기생정도를 비교조사한 결과 semperflorens 품종에 가장 기생률이 높았고 metarica 품종은 중정도였으며 erytholopylla와 argento-guttata 품종들에는 기생이 없었다. 이 점은 매우 의의있는 사실로서 앞으로 더욱 연구할 과제로 삼았다. 끝으로 Sanceberia에서 많이 발견되는 Rhabditis sp를 $18^{\circ}C$, $25^{\circ}C$, $30^{\circ}C$, $35^{\circ}C$의 동온도별의 incubator에서 사육한 결과 본 종의 생육적온이 $30^{\circ}C$라는 사실을 알았다.

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Taxonomic Study of Marine Nematodes from the Philippines I. Genus Tenuidraconema (Desmodorida: Draconematidae) (필리핀산 해양 선충류의 분류학적 연구 I. 가는도마뱀선충속 (Desmodorida목: 도마뱀선충과))

  • Rho Hyun Soo;Kim Won
    • Animal Systematics, Evolution and Diversity
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    • v.21 no.1
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    • pp.57-66
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    • 2005
  • Tenuidraconema philippinensis, a new species of free-living marine nematode, collected from the shallow subtidal coarse sediments of the Philippines, is described. The new species differs from T. fiersi Decraemer, 1989 and T. koreensis Rho and Kim, 2004, by the following characteristics: the position of 12 cephalic adhesion tubes in both sexes (all 12 cephalic adhesion tubes inserted on the body annules), the number of posterior sublateral adhesion tubes (12 in male and 11 in female) and posterior subventral adhesion tubes (16 in male and 17 in female), and the absence of the intermingled somatic setae in male. This is the first discovery of the genus Tenuidraconema in the Philippines.

Studies on the Avian Nematodes in Korea(I) (한국산(韓國産) 야조(野鳥)에 기생(寄生)하는 선충류(線蟲類)에 관한 연구(硏究)(제1보(第一報)))

  • Kim, Ki-Hong;Rim, Han-Jong
    • Journal of agricultural medicine and community health
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    • v.15 no.1
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    • pp.9-14
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    • 1990
  • From five species of wild birds which were collected in the period of January, 1990~March, 1990, three species of nematodes were identified. The three species were Dispharynx nasuta(Rudolphi, 1819) in Spiruridae and Diplotriaena manipoli Chu, 1931 in Fillaridae. They are the first recording species in Korea and the morphological characters of each species(male & female) are described.

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Sutdy of Appropriate Media Selection and Early Life Cycle of Marine Free-Living Nematodes, Enoplolaimus sp. (Enoplida: Thoracostomopsidae) and Bathylaimus sp. (Enoplida: Tripyloididae) (해양 자유생활형 선충류 Enoplolaimus sp. (Enoplida: Thoracostomopsidae)와 Bathylaimus sp. (Enoplida: Tripyloididae)의 배양용 적합배지 선정 및 초기 생활사 연구)

  • SHIN, AYOUNG;KIM, DONGSUNG;KANG, TEAWOOK;OH, JE HYEOK;LEE, JIMIN;HONG, JAE-SANG
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.23 no.3
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    • pp.109-124
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    • 2018
  • In order to find the optimum culture condition for marine free-living nematoda in the laboratory, various agar media were developed and experiments were carried on nematodes. Nematodes have collected from the bottom of the sandy sediments' surface layer (about 5cm sediment) of Taean Mallipo beach's intertidal zone. Especially, with regard to agar medium, Killian medium was transformed slightly, density of agar had made a difference and this agar medium(height 2.0 mm on diameter 60 mm Petri dish) was divided. It was mixed with 5 different species of microorganism as nematodes' live food and added each culture medium. Five individuals of Enoplolaimus sp. on each culture medium were grown in a culture medium which was set on $20^{\circ}C$ and light blocked. Moreover, as a result of the optimum culture condition, 1.0% density of agar showed the highest survival rates (the average time of survival is 246.8 hours). On the other hand, the 0.4% density of agar adding Killian medium, bacto peptone and beef extract showed the lowest survival rates, which indicates the average time of survival is 27.6 hours. About Bathylaimus sp., on Killian medium's 1.0% density of agar(no feeding amount) showed the highest survival rates, which connects that the hatching rate 94.7% after 99.5 hours and it laid 7 eggs averagely on the spawning amount and the hatching rate experiment.

Plant Parasitic Nematodes in Soybean in Korea and Their Importance Rating (국내 콩 기생성선충의 중요도 등급)

  • Kim, Donggeun;Choi, Insoo;Ryu, Younghyun;Huh, Changseok;Lee, Younsu
    • Korean journal of applied entomology
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    • v.52 no.4
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    • pp.327-333
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    • 2013
  • Plant parasitic nematodes were isolated from 274 soil samples collected from soybean fields in Korea. Nematode importance rating in soybean is proposed based on this study and by reviewing other reports. Soybean cyst nematode, Heterodera glycines is the most important nematode species and rated as $1^{st}$ because it detected from 38%(range 25-51%) of soil samples with high density except Jeju province. Root-knot nematode, Meloidogyne spp. is rated $2^{nd}$ and is more widely distributed in southern provinces, Gyeongnam, Jeonnam, and Jeju province (detection rate ranged 16-44%). Pratylenchus is rated $3^{rd}$ and is more frequently detected from northern provinces such as Gyeonggi and Gangwon (detection rate ranged 10-13%). Helicotylenchus is rated $4^{th}$ and is particularly important in Jeju province (detection rate is 62% and numbers averaged 571 nematodes/$300cm^3$ soil), which is the main production area for sprouting soybean in Korea. Tylenchorhynchus, Paratylenchus, Criconema, Criconemoide, Mesocriconema, Ogma, Xiphinema, Paratrichodorus, and Trichodorus occur in low frequency and density, thus they are rated to $5^{th}$. We propose to delete following nematode genus from the list of soybean parasitic nematode in Korea because their parasitism on soybean is unconfirmed or negligible; Tylenchus, Aphelenchus, Aphelenchoides, Ditylenchus, Hirschmanniella immamuri, Basiria graminophila, Psilenchus, and Pseudhalenchus. Therefore, we revised 30 species in 16 genera as soybean parasitic nematodes in Korea. Importance rating is $1^{st}$ Heterodera glycines, $2^{nd}$ Meloidogyne spp., $3^{rd}$ Pratylenchus spp. and $4^{th}$ Helicotylenchus spp. especially in Jeju province.

Utilization of meiobenthos for pollution monitoring in the Gamak Bay, Korea (가막만의 중형저서생물을 활용한 오염모니터링)

  • KIM Dong-Sung;JE Jong-Geel;SHIN Sang-Ho
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.33 no.4
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    • pp.307-319
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    • 2000
  • Community structure (seasonal fluctuation), taxon diversity, nematodes/benthic harpacticoids and nematodes/kinorhynchs ratios of meiobenthos were studied in the Gamak Bay, Korea. A series of samplings were carried out from April 1997 to May 1999. Meiobenthic organisms was collected by van Veen grab and three subcores of 34 mm in internal diameter were taken from each sediment sample. The total density of meiobenthos in each seasons was found to be the highest in May 1999, and the lowest in December 1998. Total density of meiobenthos at each station was the highest at Station 9 in May 1999 ($2,218 inds./10 cm^2$) and the lowest at Station 3 in December 1998 ($2 inds./10 cm^2$). The Gamak Bay seemed to have an individual number increased from the inner toward the outer stations. The highest number of meiobenthos was observed on 0.125 and 0.063 mm mesh size. In every season, over $80{\%}$ of the meiobenthos was composed of only four groups: nematodes, benthic harpacticoids, sarcomastigophorans and nauplius larvae of crustaceans. Seasonal fluctuation of meiobenthos was also studied. The nematodes/benthic harpacticoids(nematodes/kinorhynchs) ratios were studied as an index of pollution monitoring for benthic ecosystem at each station in each season. The value of nematodes/benthic harpacticoids ratio was the highest at the inner stations and the lowest at the outer stations in the Gamak Bay. Taxon diversity (H') was the highest at the outer stations and the lowest at the inner stations in the Gamak Bay. The value of nematodes/benthic harpacticoids ratio significantly increased from the outer toward the inner stations, whereas the taxon diversity (H') significantly increased from the inner toward the outer stations in Gamak Bay.

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식물 기생선충 어떤 피해를 주나?

  • 최영연
    • The Bimonthly Magazine for Agrochemicals and Plant Protection
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    • v.10 no.3 s.90
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    • pp.28-33
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    • 1989
  • 농산물의 증산에 따른 재배기술의 급격한 발달에 따라 식물기생선충의 방제대책이 점차로 절실히 요구되고 있다. 최근에 문제시되고 있는 몇몇 선충류에 대하여 생태와 방제법을 알아본다.

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