• Title, Summary, Keyword: Oligochaeta

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Infection of Oligochaetes, Limnodrilus hoffmeisteri (Annelida: Oligochaeta), in the Nasal Cavity of a Chinese Man

  • Liu, Hongbin;Zhang, Zhenming;Huang, Guangping;Gu, Xiaolong;Wang, Chunmiao;Wang, Yan;Lu, Zhimin
    • The Korean Journal of Parasitology
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    • v.55 no.1
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    • pp.77-79
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    • 2017
  • The infection by Limnodrilus hoffmeisteri $Clapar{\grave{e}}de$, 1862 (Oligochaeta: Tubificinae) in humans is relatively uncommon. The present report is to describe an incidental human infection with oligochaetes in the nasal cavity of a Chinese man, a 25-year-old man residing in Zhangjiakou city, Hebei province, China presenting with nose bleed, severe itching, continuous sneezing, and rhinorrhea. A lot of oligochaete worms were found in the nasal discharge of the patient. The detected worms were identified as Limnodrilus hoffmeisteri (Annelida: Oligochaeta) based on morphological and molecular characteristics. This incidental L. hoffmeisteri nasal infection is the first case in China and indicates that oligochaete worms can be encountered in humans.

Taxonomic Review of the Family Lumbricidae (Oligochaeta) in Korea (한국산 낚시지렁이과 (빈모강)의 분류학적 검토)

  • Hong, Yong
    • Animal Systematics, Evolution and Diversity
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    • v.16 no.1
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    • pp.1-13
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    • 2000
  • Seven species of the Korean Lumbricidae, including a newly recorded species, Aporrectodea tuberculata, are reviewed, with illustrations, descriptions and key of the known species in Korea. Other 3 species of the previously known species of the family were not found in this study.

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Comparison of the habitat distribution characteristics of Aquatic Oligochaeta according to the construction of weirs in four major rivers in South Korea (4대강 보 건설에 따른 실지렁이류(Aquatic Oligochaeta) 서식분포 특성 비교)

  • Wang, Ju Hyoun;Park, Hyung Joon;Park, Jung Ho;Song, Haeng Seop;Kim, Ho Joon;Park, Yeon Jeong;Choi, Jun Kil;Lee, Hwang Goo
    • Korean Journal of Environmental Biology
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    • v.37 no.4
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    • pp.607-617
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    • 2019
  • This study examined the habitat distribution characteristics of Aquatic Oligochaeta according to the construction of weirs in the four major rivers in South Korea. The area was investigated 10 times from March to October in 2018 and a total of 18 species and 35,390 ind. m-2 were sampled. The dominant species by number was Limnodrilus hoffmeisteri(77.1%) and the subdominant species was Branchiura sowerbyi(9.5%). A total of 32.418 g m-2 dry weight was analyzed. The correlation analysis showed that the number of Aquatic Oligochaeta individuals correlated with the sediment depth, clay ratio, silt ratio, sand ratio, cobble ratio, pebble ratio, pH and TOC mg L-1. Specifically, the clay ratio and sediment depth were associated with increases in the number of individuals. The total organic carbon(TOC) increased from March to October and, conversely, the number of individuals tended to decrease.

Four New Earthworms of the Genus Amynthas(Oligochaeta: Megascolecidae) from Korea

  • Hong, Yong;Kim, Tae-Heung
    • Animal cells and systems
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    • v.6 no.3
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    • pp.195-199
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    • 2002
  • Four new species of the genus Amynthas are described from Korea: Amynthas mujuensis sp. nov., Amynthas assimilis sp. nov., Amynthas moakensis sp. nov., and Amynthas sangumburi sp. nov. The intestinal caeca are of simple type and genital markings lacking in all four species. Amynthas mujuensis sp. nov. has male field with large oval papillae, each papilla with longitudinal seminal groove; paired spermathecal pores present in 6/7, 7/8 dorsally. Amynthas assimilis sp. nov. has mare field composed of paired symmetrical pear-shaped pads with broad ends laterally, axes of symmetry diagonally oriented towards posterior; spermathecal pores in 5/6, 6/7. Amynthas moakensis sp. nov. has male pores on small porophores surrounded by swollen concentric furrows, with the spermathecal pores in 6/7, 7/8, 8/9, ventrally. Amynthas sangumburi sp. nov. has male pores centered on 0.8 mm circular flat porophores, with the spermathecal pores in 5/6, 6/7, 7/8, 8/9, laterally.

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

  • Seong Myeong Yoon;Hak Bae Kong;Won Kim
    • Animal Systematics, Evolution and Diversity
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    • v.16 no.2
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    • pp.239-255
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    • 2000
  • Seven freshwater naidid oligochaetes are recorded on the basis of the materials collected from four lowland swamps, Upo-neup, Oisong-neup, Chilnal-neup, and Chunam-ji, in Kyungsnagnam-do, Korea during the period from February 1988 to September 1991 : Chaetogaster diastrophus (Gruithuisen), C. diaphanus (Gruithuisen), Amphichaeta asiatica Liang, Pristina longiseta Ehrenberg, P. biserrata Chen, Stylaria fossularis Leidy, Slavina appendiculata (d'Udekem). These species are redescribed and illustrated with a key to the species and genera of the family Naididae in Korea. This is the first taxonomic record on the freshwater naidid oligochaetes in Korea.

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The Earthworm Fauna from Ulleungdo Island, Korea with One New Species of the Genus Amynthas (Oligochaeta: Megascolecidae) (울릉도 지렁이상 및 왕지렁이속의 1신종)

  • Hong, Yong;Kim, Tae-Heung
    • Animal Systematics, Evolution and Diversity
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    • v.21 no.2
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    • pp.129-136
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    • 2005
  • During the expedition of Uileunsdo Islands, Korea in September 2-4, 2004, a total of seven species were recognized. Of these, one species Amynthas dageletensis sp. nov. is described as new to science. Amynthas degeletensis sp. nov. lacks spermathecal pore, spermathecae, prostates, and male pore. These characteristics are systematically important and unique to the species among Korean members of Amynthas. Description of the new species is provided, including illustrations of ventral view and male pore region.

A New Species of the Genus Pithemera (Oligochaeta: Megascolecidae) from Namat NBCA, Laos

  • Hong, Yong;James, Samuel W.;Inkhavilay, Khamla
    • Animal Systematics, Evolution and Diversity
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    • v.24 no.2
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    • pp.161-164
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    • 2008
  • As a result of a taxonomic study on the earthworm material collected from Namat National Biodiversity Conservation Area (NBCA), Hoaphane Province, Laos, a new species, Pithemera viengthongensis sp. novo is described from near Namchong river, Viengthong district. The new species bearing two pairs of spermathecal pores in 7/8, 8/9 is not assignable to any other species of Pithemera as defined by Sims and Easton (1972). In the new species, the male pore region has kidney-shaped pads extending between XVII-19/20, the male pores and spermathecal pores are 0.31 circumference apart, and genital papillae are lacking. The ventral view of anterior body region and the spermathecae are illustrated.