• 한국해양학회지:바다
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• 제1권1호
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• pp.55-57
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• 1996

1995년 11, 12월에 동해안 주문진 어시장에서 구입한 살오징어(Todarodes pacificus) 248개체중 34개체로부터 116개체의 아니사키스 유충이 채집되어 13.7% 의 유충 감염율을 나타내었다. 형태 및 크기를 바탕으로 유충의 종류 및 근육, 내장, 망 등 어체 부위별 감염상황을 조사한 결과 유충의 길이는 13.5-29.5 mm 이었으며 Anisakis type I이 68개체 (58.6%:회수율), Contracaecum type A 5개 체 (4.3%), Anisakis type II 17개체 (14.6%), Contracaecum type D 8개체 (7.0%) 및 불명 18개체 (15.5%)로 분류되었다.

• 환경생물
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• 제19권1호
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• pp.37-42
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• 2001

The biomass of Ulva mats was surveyed in a lower rocky shore of the southern coast of Korea during the 1998-1999 winter. The population selected for the present study was located on the tidal zone ranging from 118 cm to 130 cm below mean sea level (MSL), where abundance of Ulvu species was highest. The biomass of Ulva species increased gradually from December 1998 until February 1999, reaching the maximum of 374 g dry wtㆍm$^{-2}$ in February. The biomass varied little among the sampling quadrats for each sampling time. Over the course of the study a total of 16 taxa were sampled from Ulva mats, of which 5 were macrophytes and 11 were macroinvertebrates. Rodophyta comprised 3 taxa, followed by Phaeophyta of 2 taxa, but there was no Chlorophyta except for Ulva species. The macrofaunal assemblage was consisted of 8 taxa of Mollusca, 2 Arthropoda and 1 Annelida. There was a dramatic increase in Mytilus sp. in February. Moreover, the trend of biomass were similar between some macroinvertebrates and Ulva species. The results suggested that macroinvertebrates may play an important role in nutrient dynamics as well as food web. Further experimental evidence may be necessary to explain the correlation between Ulva mats and abundance of coexisting macroinvertebrates.

• 환경생물
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• 제24권1호
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• pp.19-28
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• 2006

새만금 방조제 공사에 따른 동물 군집변화를 분석하기 위한 기초자료를 얻고자 이 지역에 서식하는 연체동물상을 조사하였다. 생물상 조사는 2003년 8월 3일에서 5일, 8월 21일에서 23일 등 2회에 걸쳐 실시하였다. 조사결과 40과 88종의 연체동물이 채집되었으며, 문헌기록을 포함하여 새만금 지역에 서식하는 연체동물은 모두 48과 109종으로 밝혀졌다. 이 중 금번 조사에서 흰점줄박이고둥(Eurytrochus cognatus)을 포함한 34과 51종이 새만금 지역의 연체동물상에 새로이 추가되었으며, 더욱 정밀한 조사를 한다면 더 많은 종이 추가될 것으로 추측된다. 이 지역에는 희귀종과 상업적으로 중요한 연체동물이 다수 서식하고 있으며, 방조제 공사에 의해 막대한 영향을 받을 것으로 예측된다.

• 한국패류학회지
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• 제13권1호
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• pp.9-19
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• 1997

한국에 분포된 논우렁이과(family Viviparidae)에는 논우렁이(Cipangopaludina chinensis malleata)와 큰논우렁이(C. japonica) 두 종으로 알려져 있으나 그 형태적 차이점을 구별하기는 쉽지 않다. 형태학적 주요 차이점은 논우렁이에서 패각의 봉합이 깊어 나탑이 뚜렸하고 둥글며 spire angle이 약 62。- 66。인데 비해, 큰 논우렁이는 봉합이 깊지 않아 나탑이 뚜렷하지 못하고 밋밋하며 각 나층에 두개씩의 나륵이 있는 점과 spire angle이 약 58。- 61。인 점이다. 소화기관과 생식기관에서는 2종의 암, 수 모두에서 특이할만한 차이점을 찾아 볼 수 없으나 논우러이는 큰논우렁이에 비해 전반적으로 크고 긴 기관들을 갖고 있었다. 논우렁이와 큰노누렁이 모두에서 IM, IOL, ILL, IC, ILL, IOL, IM의 치설 배열을 보였으나 분치(cusp)배열이 다소 상이하였으며, 논우렁이 개체군 사이에도 분치 배열의 상이점이 관찰되었다. 그러나 위의 두 종은 형태적으로 유사성이 높기 때문에 $\beta$-분류 및 $\gamma$-분류로 그 체계를 확실히 구명하여야 할 필요성이 인정된다.

• 한국수산과학회지
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• 제39권1호
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• pp.42-48
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• 2006

Analysis of stomach content for common squid was carried out to investigate the difference in seasonal and ontogenetic feeding behavior. Totals of 1368 common squid were collected monthly off Busan from September 2004 to August, 2005. Size range of common squid was 8.5-31.8 cm mantle length (ML) during the study period. Of the 1368 stomachs examined, 599 specimens (43.8%) were empty. Stomach contents indicated that common squid was carnivore: Large portion of stomach contents consisted of fish and mollusca (mainly common squid). The stomach contents index (SCI) seemed to increase with size, though there was no statistical difference between size classes significantly. Cannibalism was minimum in size range of 15-20 cm ML, but was steadily increased with size. Cephalopods were the major prey during spring and summer when common squid were small, but fish replaced it during autumn and winter when they became large.

• 한국초등과학교육학회지:초등과학교육
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• 제22권1호
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• pp.97-108
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• 2003

The total 4,895 works presented at Science Fairs for the past 17 years(1986∼2002) are classified by subjects and participators, and the 1,277 works in biology section are analyzed by participators, contents, and object materials. The results are as follows: The proportion of exhibits according to sections was the most in Biology(26.1％). The social position of exhibitors and its proportion were 45.7% in students and 54.3% in teachers and popular people. The proportions of students' exhibits by the level of school were elementary school(68.3%). middle school(14.3%), and high school(17.4%). This indicates rapid decrease in the number of exhibits in middle and high schools. The proportion of students' exhibits(55.9%) is higher than that of teachers' exhibits(44.1％) in the section of Biology. In terms of contents, exhibits about Physiology and Ecology were the most(67.6%). The materials used in those exhibits and the proportion were Animalia(50.9%), Plantae(39.9％), Fungi(5.7%), Monera(1.8%), and Protista(1.7%). The proportion of taxa in plants studied in the exhibits were Dicotyledoneae(65.9％) and Monocotyledoneae(17.3％). The proportion of taxa In animals was Arthropoda(60.2％), Vertebrata(24.9%), and Mollusca(11.1％). The species used in those exhibits and its times were pine tree(11 times), dandelion(10 times), and butterfly(11 times).

• 한국환경보건학회지
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• 제23권4호
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• pp.1-8
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• 1997

The aquatic animals of Tan stream were composed of 46 species, 28 families, 11 orders, 6 classes in 4 phyla during the survey period of April, 1996 to December, 1996. They were composed of 31 species in aquatic insecta, 6 species in annelida, 3 species in mollusca, 1 species in crustacea, and 5 species in fishes, respectively. Major dominant species in Tan stream were Chironomidae sp.1, Chironomidae sp.2, Chironomidae sp.3, Tubufucidae sp.1, Physa acuta and hirudo niponica. Dominance indices of benthic macroinvertebrates ranged highly from 95.74 to 100.00% at lower stream(site 4), but ranged 50.00 to 95.85% at site 1 through site 3. The aquatic animals ranged from 25 to 32 species at site 1 through site 3, but they were only 3 species at site 4 for survey period. Tan stream in the light of urban stream ecosystem has a little less riffle areas and hydrophyte areas by cementation of riparian area and channel type of water course. Therefore, the species of aquatic animals in Tan stream decreased because of deterioration of water quality according to reduction of self-purifcation ability and loss of microhabitat according to reduction of hydrophyte areas and riparian areas. The tendency of decreasing species of aquatic animals appeared seriously at lower stream From drive licence test authority at Kangnam-ku, Seoul to conjunction point of the Han river.

• 한국수산과학회지
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• 제25권3호
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• pp.171-175
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• 1992

피조개의 핵형을 구명할 목적으로, 1991년 여름 경상남도 남해산을 온도자극법에 의해 인위적으로 방난방정을 유발하였다. 1. 발생중인 Trochophore 유생을 사용하여 공기건조법에 의해 다수의 명료한 중기분열상을 관찰할 수 있었다. 2. 피조개의 염색체는 2n=38로서, 핵형은 3쌍의 중부동원체형, 2쌍의 중부-차중부동원체형, 10쌍의 차중부동원체형과 4잡의 차단부동원체형으로 구성되었음이 확인되었다.

• 한국환경과학회지
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• 제27권11호
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• pp.1007-1021
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• 2018

Community dynamics of benthic macroinvertebrates and biological evaluation of water quality were investigated at Gigyecheon of Pohang and Gyeongju, Korea. The survey was carried out at 8 sites from May to October, 2017. As a result, total of 104 species under 54 families, 15 orders, 8 classes in 4 phyla with 5,052 individuals were revealed. The number of species was the most abundantly identified in aquatic insects, 76 species under 34 families, 6 orders. Among them, the order Odonata was the most abundant taxon as 21 species(20.2%). The most abundant individuals were collected in the phylum Mollusca as 1,453 individuals(28.8%). Various species appeared dominantly at each site by season, and the most dominant species was Caridina denticulata denticulata belonging to the class Malacostraca with 0.08 of dominance index. According to the results of community structure analyses, the diversity and richness indices were the highest at site II, the evenness index was the highest at site I, and the dominance index was the highest at site IV. The number of species and individuals of gathering collectors were the highest among functional feeding groups. Those of sprawlers were the highest among habitat orientation groups. The ESB showed a tendency to change according to season and site, and it was the highest in May at most surveyed sites. The KSI was also somewhat fluctuated according to season and site. From these indices, average biological water quality was evaluated as class II.

• Animal Systematics, Evolution and Diversity
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• 제38권1호
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• pp.14-19
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• 2022

Leptochiton Gray, 1847 is one of the most ancient chiton groups which includes more than 130 species that occur in cold and deep waters worldwide. Due to their small-sized body, they are often confused as juveniles of other chiton species. Moreover, lack of morphological information makes species identification of this group very challenging. To date, only two Leptochiton species(L. fuliginatus and L. rugatus) have been reported from Korean waters. In this study, we found L. hakodatensis(Thiele, 1909) for the first time in Korea and described microscopic morphological characters of valves (tegmentum sculpture), girdle scale, and radula using a scanning electron microscopy (SEM). Leptochiton hakodatensis is morphologically similar to L. fuliginatus and L. rugatus, but differently characterized by having dorso-ventrally rounded (not carinated) intermediate valves, girdle (perinotum) scales sculptured with 4-7 longitudinal ribs, and bicuspid major lateral teeth of radula. In addition to morphological examination, we determined the partial mitochondrial cytochrome c oxidase subunit I(cox1) as a DNA barcode sequence information. This is the first report that describes microscopic characters (tegmentum of valves, girdle structure, and radula) of L. hakodatensis using a SEM. This study provides a morphological basis for describing Leptochiton species and discovery of a "hidden" species of this genus.