• 환경생물
• /
• 제20권1호
• /
• pp.1-9
• /
• 2002

요각류는 수서생태계 내에서 1차 소비자로서 매우 중요한 생물이다. Harpacticoida 목에 포함되는 대부분의 저서성 요각류는 중형저서생물에 포함되며, 전세계적으로 3,000여 종 가량의 해산종이 알려져 있다. 저서성 요각류의 다양성을 파악하는 일은 기본적으로 새로운 생물자원과 유전자원의 발굴이라는 측면에서도 중요하다. 해산 저서성 요각류 다양성 연구의 중요성 및 앞으로의 연구 전망에 대해서 논의하였다.

• 환경생물
• /
• 제39권4호
• /
• pp.590-603
• /
• 2021

Benthic harpacticoids were collected from the East Sea of Korea. Specimen were identified as members of the genus Robertgurneya Apostolov & Marinov, 1988 based on the following characteristics: the fourth segment of antennule with aesthetasc, antenna with three-segmented exopod, shape of mandible, and P1-P4 armature formula. Robertgurneya donghaensis sp. nov. is morphologically most closely related to R. simulans (Norman & Scott T., 1905) and R. similis similis (Scott A., 1896). However, R. donghaensis is characterized by the rostrum with a pointed tip, caudal rami about as board as the length of its inner edge, the first segment of the P1 endopod much longer than entire exopod, and the P5 exopod with five setae in male. The genus Robertgurneya is reported from Korean waters for the first time.

• Journal of Species Research
• /
• 제9권4호
• /
• pp.480-488
• /
• 2020

The genus Eurycletodes Sars, 1909 is reported for the first time in Korea. A new species of the genus Eurycletodes was collected from Hansando Island, South Sea of Korea. So far, Eurycletodes comprises 27 species, with no previously recorded species reported in East Asia, including Korea. Eurycletodes (Oligocletodes) vadumus sp. nov. is morphologically most closely related to E. (O.) denticulatus Por, 1967, E. (O.) aculeatus Sars, 1920, and E. (O.) diva Menzel, 2011, but clearly distinguishable from the others based on the following morphological characteristics: absence of A2 exopodal seta, A1 last segment with two inner setae, P4 exp-3 proximal inner seta modified, the ratio of length and of caudal rami (1.6 times), and mandibular palp with three setae. Together with the new species, the number of valid species in this genus has risen to 28. A key to species of the genus Eurycletodes is provided.

• 한국어업기술학회:학술대회논문집
• /
• 한국어업기술학회 2001년도 춘계 수산관련학회 공동학술대회발표요지집
• /
• pp.479-480
• /
• 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
• /
• 제12권3호
• /
• pp.244-257
• /
• 2023

The family Ameiridae Boeck, 1865 (Copepoda; Harpacticoida) consists of about 380 species in 47 genera, but only 10 species have been reported in Korea. A benthic ameirid species was collected from the East Sea of Korea. Specimens were identified as members of the genus Ameiropsis Sars G.O., 1907, and this is the first record of the genus Ameiropsis in the Pacific Ocean. Ameiropsis gyeongjuensis sp. nov. is morphologically similar to A. mixta Sars G.O., 1907 and A. longicornis Sars G.O., 1907 from Norway. However, the new species is clearly distinguishable from the others based on the following morphological characteristics: the proximal segment of antennary exopod with a bulge in the middle, and with one pinnate seta; the distal segment of antennary exopod with a thickened, blade-shaped outer seta; and female P5 baseoendopod with five setae and exopod with six setae. An identification key to species is provided for the 11 valid species of the genus Ameiropsis.

• 한국해양학회지:바다
• /
• 제2권1호
• /
• pp.42-47
• /
• 1997

북동 태평양 심해저 퇴적물에 서식하는 중형저서생물의 군집조성 및 분포양상을 보기 위하여, 다중 주상 시료 채취기(Multiple corer) 및 상자형 시료 채취기(Box corer)를 사용하여 10개 정점에서 시료를 채집하였다. 전 정점에서 18개 분류군이 출현하였다. 각 군집의 비율을 보면 Sarcomastigophora가 가장 우점하여 35.8%, 그 다음 Nematoda가 30.8%, Crustacea의 Naup1ius larvae가 그 다음으로 11.9%의 조성비율을 보였다. 또, benthic Harpacticoida, Ciliophora가 주요 생물군으로 이 5개의 주요 동물군이 전 정점의 중형저서동물 전체의 약 90%를 차지하였다. 총 개체 수는 정점 4(수섬 4960 m)에서 가장 높은 196 inds./10 $cm^2$을 보였고 정점 1(수심 4969 m)에서 가장 낮은 85 inds./10 $cm^2$을 보였다. 각 정점의 평균 개체 수는 $1.34{\times}10^5\;inds./m^2$ 이였다. 수평분포는 수심의 증가에 따라 서서히 감소하는 경향을 보였고, 수직분포는 표층 0~1 cm에서 집중적으로 분포하고 퇴적물내의 심도의 증가에 따라 서서히 감소하는 경향을 보였다.

• Ocean and Polar Research
• /
• 제36권3호
• /
• pp.209-223
• /
• 2014

The community structure of benthic meiofauna was investigated from seasonal surveys at seventeen stations off the Saemangeum area, in 2007. Ten meiofaunal taxa were identified. Nematodes were the dominant faunal group in all seasons and harpacticoids were dominant only at a few stations. The mean density of meiofauna was 383 indiv. $10cm^{-2}$, highest in May and November (434 indiv. $10cm^{-2}$), lowest in February (284 indiv. $10cm^{-2}$). Meiofaunal mean biomass was $80.49{\mu}gC{\cdot}10cm^{-2}$, highest in November ($99.54{\mu}gC{\cdot}10cm^{-2}$), lowest in February ($51.56{\mu}gC{\cdot}10cm^{-2}$). Cluster analysis revealed that the study area was composed of three benthic meiofaunal communities. There were significant correlations between major meiofaunal groups and sediment composition and the concentrations of heavy metals. The abundance of harpacticoids are positively correlated with silt (0.559, p < 0.01) and clay (0.340, p < 0.01), and negatively correlated with sand (-0.548, p < 0.01). Harpacticoids also showed positive correlations with heavy metals. The community structure of meiofauna in the study area varied seasonally in response to the change of sediment composition.