• ALGAE
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• 제28권4호
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• pp.297-305
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• 2013

There is increasing interest in the relationships between marine bacteria and red tide organisms. Some bacteria are known to kill red tide organisms, and may be responsible for accelerating the termination of red tides. Thus, certain algicidal bacteria have been proposed for the control of red tides. Meanwhile, many red tide organisms are known to feed on marine bacteria. The roles of marine bacteria and red tide organisms are therefore reversible. In Korean waters, the killing of red tide organisms by algicidal bacteria, and also the feeding of red tide organisms on marine bacteria have been extensively investigated. The findings of such studies may influence the conventional view of red tide dynamics, and also planktonic food webs. Here, we review the species and concentrations of algicidal bacteria that kill red tide organisms in Korean waters, as well as the ingestion rate and grazing impact of red tide organisms on marine bacteria. Furthermore, we offer an insight into the ecological roles of these 2 components in marine planktonic food webs.

• 한국양식학회:학술대회논문집
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• 한국양식학회 2005년도 춘계학술발표대회 논문요약집
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• pp.80-81
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• 2005

To investigate the food organisms of the Acanthogobius hasta during the juveniles stage, the stomach contents of fish, captured in the intertidal zone of Chungchong- nam-do Sochon-gun Su-myon Dodun-ri (Fig. 1) between on early June from end of May 2003, were observed. Total length of the juveniles of A. hasta was 5.5 mm ${\sim}$ 8.9 mm size, and the participation rate of feeding was 69.6%. Main food organisms were such as copepods, decapods, polychaete larvae, amphipods and these occupied more than dry weight 3.9%. Copepods among them dominated the most quantitys by average 62.7%, and next, food organisms appeared much by order of decapods, polychaete larvae and amphipods etc.. Therefore, most important food organisms of juvenile stage of A. hasta were copepods, decapods, polychaete larvae, amphipods etc.

• 한국양식학회:학술대회논문집
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• 한국양식학회 2005년도 춘계학술발표대회 논문요약집
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• pp.82-83
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• 2005

To investigate the food organisms of the Chaenogobius mororanus during the juveniles stage, the stomach contents of fish, captured in the intertidal zone of Chungchong- nam-do Sochon-gun Su-myon Dodun-ri (Fig. 1) between on early June from end of May 2003, were observed. Total length of the juveniles of C. mororanus was 5.0 mm ${\sim}$ 8.4 mm size, and the participation rate of feeding was 71.4%. Main food organisms were such as copepods, decapods, polychaete larvae, amphipods and these occupied more than dry weight 3.9%. Copepods among them dominated the most quantitys by average 62.0%, and next, food organisms appeared much by order of decapods, polychaete larvae and amphipods etc.. Therefore, most important food organisms of juvenile stage of C. mororanus were copepods, decapods, polychaete larvae, amphipods etc.

• 한국양식학회:학술대회논문집
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• 한국양식학회 2003년도 추계학술발표대회 논문요약집
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• pp.93-94
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• 2003

To investigate the food organisms of the Acentrogobius elongata during the juveniles stage, the stomach contents of fish, captured in the intertidal zone of Chungchongnam-do Sochon-gun Su-myon Dodun-ri between on early in June from the end of May 2000, were observed. Total length of the fingerings of A. elongata was 1.0~3.0cm size, and the participation rate of feeding was 68.6%. Main food organisms were such as copepods, shrimp larvae, polychaete larvae, and these occupied more than dry weight 4%. Copepods among them dominated the most quantitys by average 64.6%, and food organismsms appeared by order of polychaete larvae and shrimp larvae etc.. Therefore, most important food organisms of fingerlings stage of A. elongata were copepods, polychaete larvae, shrimp larvae etc.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2002년도 춘계 수산관련학회 공둥학술발표회
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• pp.359-360
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• 2002

To investigate the food organisms of the Tridentiger trigonocephalus during the juveniles stage, the stomach contents of fish, captured in the intertidal zone of Chungchongnam-do Sochon-gun Su-myon Dodun-ri between on early June from end if may 1999, were observed. Total length of the juveniles of T. trigonocephalus was 5.5mm∼9.0mm size, and the participation rate of feeding was 68.5%. Main food organisms were such as copepods, amphipods, shrimp larvae, polychaete larvae, and these occupied more than dry weight 2%. Copepods among them dominated the most quantitys by average 67.5%, and next, food organismsms appeared much by order of polychaete larvae and shrimp larvae etc.. Therefore, most important food organisms of juvenile stage of T. trigonocephalus were copepods, polychaete larvae, shrimp larvae etc.

• 한국양식학회:학술대회논문집
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• 한국양식학회 2002년도 춘계 한국양식학회 학술대회 발표요지
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• pp.225-226
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• 2002

To investigate the food organisms of the Tridentiger trigonocephalus during the juveniles stage, the stomach contents of fish, captured in the intertidal zone of Chungchongnam-do Sochon-gun Su-myon Dodun-ri getween on early June from end of May 1999, were observed. Total length of the juveniles of T. trigonocephalus was 5.5mm∼9.0mm size, and the participation rate of feeding was 68.5%. Main food organisms were such as copepods, shrimp larvae, polychaete larvae, and these occupied more than dry weight 2%. Copepods among them dominated the most quantitys by average 67.5%, and next, food organismsms appeared much by order of polychaete larvae and shrimp larvae etc.. Therefore, most important food organisms of juvenile stage of T. trigonocephalus were copepods, polychaete larvae, shrimp larvae etc.

• 한국수산과학회지
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• 제28권3호
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• pp.247-252
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• 1995

멸치의 초기 먹이생물을 조사하기 위하여 1990년 6월 광양만에서 채집된 멸치의 장내용물을 조사하였다. 멸치는 난황의 흡수를 끝낸 척색장 3.0mm부터 먹이를 먹기 시작하였다. 멸치 자어의 먹이는 요각류의 난과 nauplius 유생, 유종류 등으로 구성되어 있었다. 척색장 3.0-3.8mm의 자어에서는 요각류 난과 요각류 nauplius 유생이 주요 먹이생물이었으나, 척색장 3.8mm 이상에서는 요각류 nauplius 유생만이 관찰되었다.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.565-566
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• 2001

To investigate the food organisms of the Chasmichthys dolichognathus during the juveniles stage, the stomach contents of fish, captured in the intertidal zone of Chungchongnam-do Sochon-gun Su-myon Dodun-ri between on early June from end of May 1998, were observed. Total length of the juveniles of C. dolichognathus was 6.5mm ∼10.0mm size, and the participation rate of feeding was 67.7％. Main food organisms were such as copepods, amphipods, shrimp larvae, polychaete larvae, and these occupied more than dry weight 2％. Copepods among them dominated the most quantitys by avergage 65.5％, and next, food organismsms appeared much by order of polychaete larvae and shrimp larvae etc. Therefore, most important food organisms of juvenile stage of C. dolichognathus were copepods, polychaete larvae, shrimp larvae etc.

• 한국수산과학회지
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• 제2권1호
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• pp.47-62
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• 1969

풀망둑 Synechogobius hasta(TEMMINCK et SCHLEGEL)의 식성 조사와 먹이생물 상호간의 생물학적 변화를 조사하기 위하여 낙동강 유역의 선암, 가락, 성산, 하단의 4개 지점에서 총 1,295개체의 풀망둑을 월별로 채집하였다. 위 내용물은 3가지 방법에 의해 구분하였으며, 이 방법은 수정된 Nilsson의 방법(Dahl 1962)을 다시 약간 수정하여 사용하였다(Table 2). 1) 위 내용물의 각 먹이종목별 수를 계산하여 한 계절동안 전체 풀망둑이 먹은 먹이생물의 총 개체수에 대해 Percentage를 낸 것을 Table 2에 "N"(Numerical)로 표시하였다. 2) 한 계절동안 채집한 풀망둑 수에 대한 각 먹이종목(Food Item)이 발생하는 풀망둑 수의 출혈빈도수를 Table 2에 "O"(Frequncy of Occurrence)로 표시하였다. 3) Predominant한 먹이종목을 선택하여 그것의 총 개체수에 대한 각 Predominant한 먹이수의 Percentage를 "D" (Dominance)로 표시하였다. 먹이생물은 50개의 먹이종목으로 되고 이것을 13가지의 Main Group로 나누고 (Fig. 2-1), 이것을 다시 먹이 생물을 제공하는 Habitat내의 Animal Community의 조건에 따라 Obligatory Bottom Animal, Organic Drift 와 Actively Swimming Form로 나누었다. 풀망둑의 식성은 Table 2에서 보는 것과 같이 먹이생물의 평균 $94.6\%$가 Obligatory Bottom Animal인 것으로 보아 풀망둑은 전형적인 Bottom Feeder였다. 그리고, 이들의 먹이생물은 일반적으로 이들이 살고 있는 Habitat 내의 Benthic Fauna의 Local Composition에 의해 Dominant Food Organism이 결정되고, 계절별로 먹이생물들 사이에 생물학적 상호 작용으로 인한 Seaeonal Rhythm을 나타내고 있었다. 선암 지역과 가락 지역은 동일한 먹이생물들 사이에 Habitat의 종적 구분에 의해 그 Population의 천이가 반대 현상으로 나타나는 Locality Variation을 보이며, 성산, 하단 지역은 먹이생물의 계절적 변화와 하구성 생물상이 동일한 점으로, 동일한 조건의 Habitat로 생각된다. 이상의 것을 간추려 보면, 1) 풀망둑은 주로 저생동물을 먹이로 하며, 그 먹이생물은 Habitat 내의 Food Composition에 의해 결정된다. 2) 먹이생물의 계절적 변화는 Population내의 생물학적인 변화의 상호 작용에 의해 Seasonal Rhythm을 나타낸다. 3) 풀망둑의 식성은 비편식성이고 먹이생물의 종류 변화가 많다. 4) 가장 중요한 먹이생물은 Polychaeta, Palaemon modestus, Isopoda, Gammaridea, Insecta (nymphs and larvae), Ilyoplax deschampsi, Paratye compressa로 나타난다. 5) 성산, 가락, 선암의 Community내에서 먹이생물은 종적천이 (Longitudinal Succession) 현상이 나타난다 6) 풀망둑은 수은이 상승($20^{\circ}C$이상)하는 4월경부터 하구로 이동하고, 9월부터 상류로 이동하는 Seasonal Movement를 하는 어류이다.

• Journal of Microbiology and Biotechnology
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• 제23권12호
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• pp.1717-1725
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• 2013

Traditional soybean paste from Shandong Liangshan and Tianyuan Jiangyuan commercial soybean paste were chosen for analysis and comparison of their bacterial and fungal dynamics using denaturing gel gradient electrophoresis and 16S rRNA gene clone libraries. The bacterial diversity results showed that more than 20 types of bacteria were present in traditional Shandong soybean paste during its fermentation process, whereas only six types of bacteria were present in the commercial soybean paste. The predominant bacteria in the Shandong soybean paste were most closely related to Leuconostoc spp., an uncultured bacterium, Lactococcus lactis, Bacillus licheniformis, Bacillus spp., and Citrobacter freundii. The predominant bacteria in the Tianyuan Jiangyuan soybean paste were most closely related to an uncultured bacterium, Bacillus licheniformis, and an uncultured Leuconostoc spp. The fungal diversity results showed that 10 types of fungi were present in the Shandong soybean paste during the fermentation process, with the predominant fungi being most closely related to Geotrichum spp., an uncultured fungal clone, Aspergillus oryzae, and yeast species. The predominant fungus in the commercial soybean paste was Aspergillus oryzae.