• 제목/요약/키워드: Oligochaeta

검색결과 61건 처리시간 0.039초

경남 자연늪에 서식하는 담수 빈모류 (빈모강, 실지렁이목, 물지렁이과) (Freshwater Oligochaetes(Oligochaeta, Tubificida, Naididae) from Several Swamps in Kyungsangnam-do, Korea)

  • Seong Myeong Yoon;Hak Bae Kong;Won Kim
    • Animal Systematics, Evolution and Diversity
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    • 제16권2호
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    • pp.239-255
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    • 2000
  • 1988년 2월부터 1991년 9월까지 경상남도 우포늪, 외송늪, 질날늪 및 주남지에서 채집된 표본들을 동정하여 7종의 물지렁이류를 보고한다. Chaetogaster diastrophus (Gruithuisen), C. diaphanus (Gruithuisen), Amphichaeta asiatica Liang, Pristina longiseta Ehrenberg, P. biserrata Chen, Stylaria fossularis Leidy, Slavina appendiculata (d'Udekem). 저자들은 7종에 대하여 재기재하였고 도판을 작성하였으며, 한국산 물지렁이과 종들에 대한 검색표를 제시하였다. 본 연구는 한국 담수산 물지렁이류에 관한 최초의 분류학적 기록이다.

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Movement Responses of Sludge Worm Tubifex tubifex (Annelida, Oligochaeta) in Three Different Copper Concentrations

  • Hyejin Kang;Mi-Jung Bae;Young-Seuk Park
    • 생태와환경
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    • 제55권3호
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    • pp.251-257
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    • 2022
  • Monitoring and assessing aquatic ecosystems using the behavior of organisms is essential for sustainable ecosystem management. Oligochaetes, which inhabit various freshwater ecosystems, are frequently used to evaluate the environmental conditions of freshwater ecosystems. Tubifex tubifex (Müller, 1774) (Oligochaeta, Tubificidae) is tolerant to organic pollution and has been used to evaluate the toxicity of toxicants, including heavy metals. We studied the behavioral responses of T. tubifex to three different copper concentrations (0.1, 0.5, and 1.0 mg L-1). The specimens were exposed to copper in an observation cage containing 150 mL of dechlorinated water. Movement behavior (diameter, speed, acceleration, meander, and turning rate) was continuously observed for two hours before and after the copper treatments. After the treatments, the diameter shrank and showed rapid twisting movement under all the copper conditions. The turning rate had a positive correlation with meander and acceleration both before and after treatment at all three concentrations, whereas speed and meander had a negative correlation. Length and turning rate also showed a negative correlation. The correlation coefficient between speed and acceleration in the highest copper concentration changed from positive before treatment (r=0.64) to negative (r= -0.52) after treatment. Our results present the possibility of using behavioral parameters to detect copper contamination in freshwater ecosystems.

Two New Eisenia Species from South Korea Similar to E. koreana and Comparable to Eisenoides from USA (Oligochaeta: Lumbricidae)

  • Blakemore, Robert J.;Park, Tae Seo
    • Animal Systematics, Evolution and Diversity
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    • 제28권4호
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    • pp.297-303
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    • 2012
  • New Korean lumbricids are described: Eisenia gaga Blakemore sp. nov. from remote Gageodo Island and E. sindo Blakemore, sp. nov. from an island at Incheon. Both are comparable to Eisenia koreana (Zicsi, 1972) from near Pyongyang, North Korea. A remarkable yet previously unrecognized similarity to American earthworm Eisenoides carolinensis (Michaelsen, 1910) is discussed, but synonymy is rejected on tenuous morphological grounds (form of nephridial vesicle bladders) with taxonomy supported by objective molecular data (mtDNA cytochrome c oxidase subunit 1 barcodes).

Amynthas carnosus (Goto & Hatai, 1899) redescribed on its neotype (Oligochaeta: Megadrilacea: Megascolecidae)

  • Blakemore, Robert J.
    • Journal of Species Research
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    • 제1권1호
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    • pp.35-43
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    • 2012
  • Japanese/Korean Amynthas carnosus (Goto & Hatai, 1899) is redescribed from a newly designated Neotype (Tokyo NSMT An435). An annotated synonymy is presented that nominally includes: kyamikia Kobayashi, 1934, monstrifera Kobayashi, 1936, sangyeoli, youngtai, kimhaeiensis, sinsiensis and baemsagolensis - all Korean names by Hong & James, 2001, and Taiwanese monsoonus James et al., 2005. However, Chinese A. pingi (Stephenson 1925) (syn. fornicata Gates, 1935) is maintained separately, at least for the present, until its comprehensive review, possibly extending to DNA barcode differentiation.

Naidid oligochaetes (Annelida: Clitellata) from the Seokhyeoncheon and Changreungcheon Streams with New Record of Nais variabilis

  • Jung, Jong-Woo
    • 생태와환경
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    • 제44권4호
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    • pp.407-410
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    • 2011
  • Aquatic Oligochaeta is a notable animal group in freshwater environment such as streams, rivers and lakes in view of its biomass and species richness. Taxonomic studies of this group, however, have hardly been performed in Korea. Here five naidid oligochaete species are reported - Slavina appendiculata, Pristina longiseta, Pristina biserrata, Chaetogaster diaphanus and Nais variabilis - from the Seokhyeoncheon Stream in Yangju and from the Changreungcheon Stream in Goyang, Gyeonggi-do. Aquatic oligochaetes attaching on aquatic vegetations were collected with a plankton hand net. An image and description on Nais variabilis new to Korea are provided.

유기성 슬러지 급이에 따른 크롬과 망간의 줄지렁이 (Eisenia andrei (Annelida; Oligochaeta)) 체내 생물축적 (Bioaccumulation of Chromium and Manganese in the Earthworm Eisenia andrei (Annelida; Oligochaeta) in Relation to the Supply of Organic Sludges)

  • 배윤환;최석순
    • 유기물자원화
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    • 제24권3호
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    • pp.101-108
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    • 2016
  • 경기도 포천시 하수처리장에서 수처리후 탈수된 몇 가지 유기성 슬러지내 크롬과 망간 농도에 대하여 조사하였다. 또한, 슬러지 급이량 변화에 따른 줄지렁이(Eisenia fetida) 체내 크롬과 망간의 생물축적에 대하여 고찰하였다. 유기성 슬러지내의 크롬과 망간 농도는 각각 0.0~0.3 mg/kg, 3.6~17.6 mg/kg를 나타내었기에, 이러한 중금속 농도들은 지렁이 개체군에 대하여 급성독성을 유발시키지 않는 것으로 판단되었다. 그리고, 슬러지 급이량 증가에 의하여 지렁이 체내에 크롬의 생물축적이 이루어졌으나 슬러지 공급량에 비례해서 크롬 농도가 증가하지 않았으며, 일정한 농도로 유지되다가 감소하는 경향을 나타내었다. 한편, 망간에 대해서는 생물축적이 거의 일어나지 않았다. 본 실험으로부터 60 g의 슬러지를 공급하였을 때, BAF 값은 망간의 경우 0.00~0.12이었으며, 인분슬러지를 주입하였을 때 BAF 값은 크롬의 롬 경우 19.33를 나타내었다.