• Ocean and Polar Research
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• 제33권3호
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• pp.265-280
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• 2011

The temporal dynamics of the meiofauna community in Marian Cove, King George Island, Antarctica were observed from March 7 to December 21 2007. Nine meiofauna taxa were found, with nematodes the most dominant group, making up 92.97% of the total meiofauna density, followed by harpacticoid copepods (3.18%). Meiofauna abundance ranged from 123 to 874 individuals per 10 $cm^2$ (mean 464 inds.10 $cm^{-2}$), which is lower than that found in some polar and temperate regions. The lowest meiofauna abundance was found in the 26th April sample (III) and the highest meiofauna abundance was found in the March 23rd sample (II). There was no correlation between meiofauna abundance and season. The seasonal changes were likely caused by meltwater runoff, and there were the physical disturbances on the bottom sediment by huge iceberg. Biomass of meiofauna varied between 20.36 and 101.02 ${\mu}gC{\cdot}10\;cm^{-2}$, and overall mean biomass was 54.17 ${\mu}gC{\cdot}10\;cm^{-2}$ during the study periods. More than 80% of meiofauna was concentrated in the upper 2 cm of the sediment, and density decreased with depth. The mean diversity index was 0.37, and the ratio between the abundance of nematodes: and harpacticoids (N/C) ratio ranged from 7.31 to 95.04 (mean 26.39). NMDS analysis divided the community into three groups: A (III, IV, V, VII, VIII), B (II, IX, XI, XII) and C (I, V, X). The results of ANOSIM and SIMPER analysis revealed significant differences in community structure among three groups and major contributed meiofauna taxon in grouping were nematodes and copepods. No significant correlations were observed between major meiofauna taxon and environmental factors. Thirteen species in 12 genera representing nine families of harpacicoids were recorded. Ancorabolidae was the most diverse family, and Heteropsyllidae was the most abundant. The correlation analysis between benthic harpacticoid copepods and environmental factors showed that some species were affected by water temperature, sediment temperature, salinity, chlorophyll a concentration, grain size of the sediments and heavy metal contents of the sediments. These data describe the usefulness of benthic harpacticoid copepods as biological indicator species in Antarctic regions.

• Animal Systematics, Evolution and Diversity
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• 제21권1호
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• pp.31-43
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• 2005

한국의 육수역에 서식하는 발톱갈고리노벌레속 (Onychocamptus)의 3종, 가시 발톱갈고리 노벌레 (O. vitiospinulosa), 돌출발톱갈고리노벌레 (O. mohammed) 및 벵갈발톱갈고리노벌레 (O. bengalensis)을 보고한다. 이중 가시발톱갈고리노벌레와 돌출발톱갈고리노벌레는 한국미기록종이다. 가시발톱갈고리노벌레를 재기재하였다. 이들 3종의 미세 형태학적 형질과 종내변이성에 대한 분류학적 검토를 수행하였고, 그림과 함께 검색표를 작성하였다.

• Animal Systematics, Evolution and Diversity
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• 제13권2호
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• pp.141-172
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• 1997

동해 및 남해의 22종의 해조류에 서식하는 Procellidium 속의 요각류 6종을 기재하였다. 이 중에서 Porcellidium ofunatense Harris and lwasaki와 Porcellidium gamoi(harris and Iwasaki)는 한국내 미기록종이다. 나머지 4종은 신종으로 기재하였으며, 이들은 1종의 해조에서 발견된 Procellidium bipartitum n. sp., 10종의 해조에서 발견된 P.wandoensis n. sp., 5종의 해조에서 발견된 P. acutum n. sp., 그리고 2종의 해조에서 발견된 P. brevicacum n. sp.이다. Porcellidium 속의 종과 해조류 사이의 특이성은 낮게 나타났다.

• Animal cells and systems
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• 제16권1호
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• pp.57-68
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• 2012

Two new harpacticoid species belonging to the genera $Microarthridion$ Lang, 1944 (Tachidiidae) and $Nitocra$ Boeck, 1864 (Ameiridae) are recorded from underground caves in the karst area of Ninh Binh Province, North Vietnam. $Microarthridion$ $thanhi$ n. sp. is distinguished from congeneric species by the number of setae on the antennary exopod, the structure of leg 5 in both sexes, and the finger-like process modified from an outer distal pinnate seta of the third endopodal segment of leg 2 in the male. $Nitocra$ $vietnamensis$ n. sp. has the character combination of six setae on the ellipsoidal exopod of leg 5 in both sexes, the first endopodal segment of leg 1 shorter than the whole exopod, the seta/spine armature of an inner seta of P2-P4 enp-1 and four elements on P2 enp-3, and the reduction of the proximal endite to a seta on the maxillary syncoxa.

• Ocean and Polar Research
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• 제36권2호
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• pp.199-208
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• 2014

Copepods are a major food source for marine fish larvae in nature. Many studies on copepods culture have been conducted to develop a new live food for the seedling production of marine fish larvae. But fish farmers still depend on rotifer and Artemia nauplii. This study was carried out to find suitable copepods as live food for the larvae in hatchery. Eight species of copepods (1 calanoid, 2 cyclpoid, 5 harpacticoid) that were fed Isochrysis galbana were examined in terms of the size of nauplii, fecundity, amino acids, and fatty acids contents. These species were divided into small (nauplii length 46-86 ${\mu}m$) and large (nauplii length 120-188 ${\mu}m$) size group. Nitokra spinipes in the small group and Tigriopus japonicus in the large group showed the highest fecundity with 151.1 and 139.6 nauplii production per gravid female, respectively. With regard to nutrients, essential amino acids were the highest with 21.2% in cyclopoid Paracyclopina nana in the small group and n-3 HUFA were the highest in calanoid Pseudodiaptomus inopinus (8.5 ${\mu}g/mg$) in the large group and P. nana (8.8 ${\mu}g/mg$). In terms of the size, fecundity, and nutritional value of copepods examined in this study, N. spinipes and P. nana seem to be suitable copepod species to develop as a new live food for small mouth fish larvae.

• Ocean Science Journal
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• 제42권4호
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• pp.255-267
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• 2007

Three brackish-water harpacticoid species belonging to the family Cletodidae are reported from the salt marshes in South Korea: Limnocletodes behningi Borutzky, 1926, L. angustodes Shen and Tai, 1963 and Kollerua longum (Shen and Tai 1979). Two genera, Limnocletodes and Kollerua, and the three species are newly added to Korean fauna. This paper deals with the redescription and systematic accounts of them, with detailed illustrations.

• Animal cells and systems
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• 제13권2호
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• pp.169-178
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• 2009

Two subterranean harpacticoid species are recorded from cavern and interstitial waters in South Korea: Parastenocaris ondali n. sp. and P brevipes Kessler, 1913. Parastenocaris ondali n. sp. resembles P nipponensis Chappuis, 1955 from Japan, but differs from it by shorter caudal rami, armature of leg 5, and short endopodal processes of leg 4 in both sexes. Herein, the new species is described, and systematic accounts of both species are provided with detailed illustrations.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.479-480
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• 2001

Harpacticoid copepods are one of the most important components in the benthic meiofaunal community. In spite of their numerical significance the study of harpacticoids in Korea, as distinct from meiofauna in general (Kim et al., 1998, 2000a, b), has been limited. During the course of investigation on ecological significance of harpacticoids in the intertidal sandy shore, a new species of the genus Rhizothrix was determined and described here. (omitted)

• Journal of Species Research
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• 제8권3호
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• pp.268-282
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• 2019

Recent integrative taxonomic research demonstrated a high endemism of Korean copepods, with closest relatives usually in neighboring countries. Although Korean fauna could be considered well-studied, some marginal habitats still provide unexpected discoveries of copepods described from distant parts of the world. Here I report three such examples. Two belong to the family Tetragonicipitidae: Phyllopodopsyllus thiebaudi santacruzensis Mielke, 1989 and Laophontella horrida dentata Mielke, 1992; one to the family Ancorabolidae: Laophontodes norvegicus George, 2018. Scanning electron microscope photographs are provided for the first time for all three species, revealing unknown details of complex three-dimensional structures and ornamentation of somites. Phyllopodopsyllus thiebaudi santacruzensis was described from the Galapagos Islands, while Laophontella horrida dentata was described from the Pacific Coast of Costa Rica; for both this is the second record, which extends their range into the Western Pacific. Laophontodes norvegicus was described from Norway; this Korean record is its first in the Pacific. The first species is represented in my samples by numerous males, females, and juveniles. However, the second one is represented by one adult male and one juvenile female, while the third is represented by a single adult male, which might suggest that the marine interstitial is not their preferred habitat in Korea.

• 한국수산과학회지
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• 제23권6호
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• pp.439-442
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• 1990

우리나라 양식미역에 바늘구멍을 뚫는 요각류 유생을 동정하기 위하여 남해안의 양식미역에 서식하는 요각류를 조사하고 미역에 바늘구멍을 뚫는 요각류 유생을 실험실에서 직접사육했다. 남해안의 양식미역 엽체에 서식하고 있는 요각류는 여러 종이 있는데, 이들 중 Ho와 Hong이 기술한 Amenephia orientalis와 다른 미동정종인 Scutellidium sp.가 이번 연구중 미역엽체 세척액속에 계속적으로 많은 양이 출현하였다. 이 두 종에 속하는 암컷중에는 포난개체가 많았다. 사육실험 결과를 보면, $15^{\circ}C$에서 구멍을 뚫는 유생은 15일만에 성체 또는 성체에 가까운 미성체까지 성장했다. 이들 성체 혹은 미성체는 모두 Amenephia orientalis로 동정되었다. 그러므로 우리나라 양식미역에 기생하면서 미역엽체에 구멍을 뚫는 종은 Amenephia orientalis로 밝혀졌다.