• 한국수산과학회지
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• 제55권6호
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• pp.967-972
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• 2022

We investigated the molecular and morphological traits of 338 individual macrourids collected from the Southern Ocean (FAO area number, 88.1 and 88.3) between 2021 and 2022 by Korean bottom trawls. We first identified them as Macrourus caml and Macrourus whitsoni based on morphological traits, such as the number of pelvic fin rays (PF) and the rows of lower jaw teeth (LJT). However four individuals showed uncategorizable morphological characteristics such as PF and LJT numbers that overlapped between the two species. Subsequently, we obtained and analyzed 509 bp of the mtDNA COI sequences of 49 individuals, including the four unidentified individuals, and found only one single nucleotide polymorphism (SNP) that distinguished the two species. Finally, using our molecular identification key, we confirmed that each two individuals were misidentified as M. whitsoni and M. caml reversely. Our results suggest that the number of PF and LJT should be investigated together to accurately identify the two species.

• 환경생물
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• 제41권2호
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• pp.145-166
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• 2023

Parrots have been threatened by global trade to meet their high demand as pets. Controlling parrot trade is essential because parrots play a vital role in the ecosystem. Accurate species identification is crucial for controlling parrot trade. Parrots have been traded as eggs due to their advantages of lower mortality rates and more accessible transport than live parrots. A molecular method is required to identify parrot eggs because it is difficult to perform identification using morphological features. In this study, DNAs were obtained from 43 unidentified parrot eggs using a non-destructive sampling method. Partial cytochrome b (CYTB) gene was then successfully amplified using polymerase chain reaction (PCR) and sequenced. Sequences newly obtained in the present study were compared to those available in the GenBank by database searching. In addition, phylogenetic analysis was conducted to identify species using available sequences in GenBank along with sequences reported in previous studies. Finally, the 43 parrot eggs were successfully identified as seven species belonging to two families and seven genera. This non-destructive sampling method for obtaining DNA and molecular identification might help control the trade of parrot eggs and prevent their illegal trade.

• Parasites, Hosts and Diseases
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• 제38권1호
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• pp.37-39
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• 2000

Many Koreans usually eat raw pond smelts, Hypomesus olidus, in the winter. This study was performed to evaluate the infection status with trematode metacercariae in pond smelts from January 1998 through February 1999. Among 1,305 fish collected, 459 were purchased from wholesale dealers in Chinchon-gun, Chungchongbuk-do, and the rest of them were caught with a casting net in Soyangho (Lake), Taehoman (Bay) and Paekkokchosuchi(Pond). Seven species of trematode metacercariae including two unidentified ones were detected from 1,305 pond smelts. The number of detected trematode metacercariae according to the species are as follow: Clonorchis sinensis 8, Holostephanus nipponicus 7, Cyathocotvle orientalis 24, DipLostomum sp. 14, and Metorchis orientalis 7. From the above results, it was confirmed that H. olidus plays a role as the second intermediate host of some kinds of trematode including C. sinensis in Korea. Our report shows possible clonorchiasis caused by eating raw pond smelts.

• Journal of Ecology and Environment
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• 제37권4호
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• pp.257-270
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• 2014

In a survey of periphytic and benthic diatoms in Korea, diatoms of genus Stauroneis were found to be widely distributed over freshwaters, rivers and streams, lakes and reservoir, wetlands in lowland and mountain areas, and even subaerial terrestrial habitats. However, it is clear that Stauroneis diatoms prefer peatlands, which can be more or less acidic or oligotrophic environments in freshwaters. In this study, Staurones diatoms were collected mainly from mountain peatlands. Twenty five taxa were confirmed to be species, while some specimens remain unidentified. Approximately twenty species have been reported in Korea in the past, but these are largely S. anceps Ehremberg sensu lato, S. phoenicenteron (Nitzsch) Eherenberg sensu lato, and their infraspecies variety or forma. Sixteen of the twenty five Stauroneis taxa found in this survey are reported for the first time in Korea.

• 한국균학회지
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• 제9권3호
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• pp.147-151
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• 1981

During the period of June 15, 1978 to February 28, 1979 fungi were isolated from 101 public and home telephones in 6 different cities and classified. Total 203 isolates were obtained and classified into 8 genera and 6 species, however 44 of the isolates were unidentified. Penicillium spp. were frequently found. Forty isolates were derivated from coffee shops, 51 from street public telephones, 35 from stores, 26 from offices and 19 from homes. Also 27 were from Seoul, 30 from Daegu, 46 from Gunsan, 82 from Chunju and 18 from Jaeju. Twenty-seven were isolated in summer and 174 in winter. From the above observations, it is concluded that the transimitters are heavily colonized with various species of fungi and some of them are pathogens. The rates of colonization appeared to be various by locations and seasons.

• ALGAE
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• 제22권2호
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• pp.69-85
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• 2007

From six reservoirs in Gyeonggi-do, we have collected the distribution and standing crop of phytoplankton since Nov. 2005 through Sep. 2006. As a result, the phytoplankton appeared totally 340 taxa belong to 7 classes, 15 orders, 5 suborders, 32 families, 4 subfamilies, 84 genera, 283 species, 43 varieties, 9 forms and 5 unidentified species. The standing crop was shown as minimum was 0.3 × 106 cells and maximum was 5,950 × 106. The relation of standing crop with TN, TP and Chl-a showed as positive. Total 12 taxa including 2 taxa of blue-green algae occurred to every seasons at six lakes, and it was thought that they distributed in mesotrophic state. Also, Achnanthes minutissima, Aulacoseira granulata, Eudorina elegans, Gloeocystis ampla, Pandorina morum, Pediastrum simplex var. duodenarium, Scenedesmus ecornis were regarded as the indicators of eutrophic state. From the estimation of LTSI and TSI, it was shown that the rest of lakes except for Idong reservoir of winter were eutrophic states.

• Applied Microscopy
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• 제34권4호
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• pp.271-276
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• 2004

Biscogniauxia속에 속한 대다수의 종들은 목재를 분해균으로 알려져 있으며, 목질내지는 탄소질이며 암갈색의 자좌를 가진 Xylariales에 속하여 있다. Daldinia concentrica와 Biscogniauxia에 속한 목재부후균이 심하게 부후된 활엽수에서 분리되었으며 이는 광학현미경 및 전자현미경을 이용하여 고찰하였다. Daldinia concentrica는 국내 최초의 전자현미경을 이용한 미세구조학적 고찰이다. 또한, Biscogniauxia속 미동정 부후균은 $11.4\;15.6{\times}9.6\;12.0{\mu}m$ 크기의 자낭포자를 가지고 있으며, 국내에서 발견된 비슷한 종들과 비교 분석하였다.

• 한국토양동물학회지
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• 제4권2호
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• pp.69-73
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• 1999

강원도 철원일대 비무장지대의 거미상을 조사한 결과 14과, 54속, 70종이었다. 이중 처음으로 한국에서 발견된 2미동정종, Evarch sp(C)., Helicius sp. (A)과 屬을 전환시킨 Asianellus festivus을 재기재한다.

• Mycobiology
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• 제33권2호
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• pp.104-108
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• 2005

Genus Phellinus taxonomically belongs to Aphyllophorales and some species of this genus have been used as a medicinal ingredients and Indian folk medicines. Especially, P. linteus and morphological-related species are well-known medicinal fungi that have various biological activities such as humoral and cell-mediated, anti-mutagenic, and anti-cancer activities. However, little is known about the rapid detection for complex Phellinus species. Therefore, this study was carried out to develop specific primers for the rapid detection of P. linteus and other related species. Designing the species-specific primers was done based on internal transcribed spacer sequence data. Each primer set detected specifically P. linteus (PL2/PL5R) and P. baumii (PB1/PB4R). These primer sets could be useful for the rapid detection of specific-species among unidentified Phellinus species. Moreover, restriction fragment length polymorphism analysis of the ITS region with HaeIII was also useful for clarifying the relationship between each 5 Phellinus species.

• 수산해양기술연구
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• 제56권3호
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• pp.213-222
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• 2020

Species composition and seasonal variations of fish in the Five West Sea Islands in Korea, were investigated by using otter trawls and bongo nets from 2014 to 2015. During the surveyed period using an otter trawl, a total of 53 species, 147,253 ind./㎢ and 2,721,296 g/㎢ of fish were collected by otter trawls. The individual dominant species were Chaeturichthys stigmatias (30.3%), Coilia nasus (18.2%), Engraulis japonicus (12.3%), and Setipinna tenuifilis (12.2%). Moreover, the biomass dominant species in biomass were Liparis tanakae (21.3%), Beringraja pulchra (18.5%), Engraulis japonicus (8.3%) and Okamejei kenojei (8.1%). Eggs by bongo nets included 1,748 ind./1,000 ㎥ of Engraulis japonicus and 64,691 ind./1,000 ㎥ of unidentified species. A total of 15 species and 2,015 ind./1,000 ㎥ of fish larvae were collected, and the dominant species were Johnius belengerii and Pholis fangi.