• Korean Journal of Ichthyology
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• v.27 no.2
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• pp.104-115
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• 2015

The species composition of larval fish assemblages in the Nakdong River estuary, Korea, was determined using monthly samples collected between September 2010 and August 2011 at two stations. A total of forty three larval species were collected during the study. Among forty three taxa of fish larvae, summer gobies, Clupea pallasii, Engraulis japonicus, spring gobies, Konosirus punctatus, winter gobies, Sardinops melanostictus, Coilia nasus were dominant taxa, and these eight taxa accounted for 95.0% in the total number of individuals. Species composition and abundance varied greatly spatio-temprally showing the peak abundances of fish larvae in August 2011, and a few fish larvae were occurred in November 2010. Cluster analysis based on the number of individuals of fish larvae showed that 21 month-station sampling units were classified into five groups at the similarity level of 50%, and the results of ANOSIM and SIMPER analysis revealed significant differences in community structure among five groups.

• Korean Journal of Ichthyology
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• v.18 no.2
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• pp.129-140
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• 2006

To find out the seasonal variation of species composition and distribution of fish eggs and larvae in the western part of Jeju Island, investigations were carried out with plankton net during five different months from September 2004 to August 2005. The mean abundance of fish eggs and larvae showed a maximum values in summer (August). During the survey period, total 59 species (51 genus, 26 families and 10 orders) of fish larvae were identified. Among the 10 orders, Perciformes (41 species, 15 families), Scorpaeniformes (7 species, 2 families) and Gasterosteiformes (2 species, 2 families) were the dominant species in this study area. The number of species was higher in high water temperature period than in low one, showing a peak in August as 25 species, and the lowest in May as 6 species. Engraulis japonicus, Scomber japonicus and Scombridae spp. which were migratory fish species occurred abundantly in summer. On the other hand, Sebastiscus marmoratus and Sebastes inermis which were sedentary fish species occurred abundantly in winter.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.27 no.5
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• pp.620-632
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• 1994

To study the distribution of ichthyoplankton in Asan Bay, samples were collected with a Bongo net at 8 stations from April, July and October of 1991, and January of 1992. The dominant fish eggs included the eggs of Nibea spp., Engraulis japonica, Callionymus spp., and others. The eggs of Nibea spp. and Engraulis japonica were $97.70\%$ and $1.30\%$ of the total egg abundance, respectively. Twenty three species of fish larvae were identified. The predominant species were gobiid fishes accounting for $32.84\%$ of the all fish larvae, and followed by Ammodytes personatus($16.69\%$). Other major species were Anguilla japonica, Nibea spp., Pampus echinogaster and Engrualis japonica. These 6 taxa constituted $90.40\%$ of the total larvae collected.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.6
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• pp.759-766
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• 2017

In order to identify the species composition and distribution pattern of larval fish assemblages in the southern coastal waters of Korea, monthly samples were taken using an RN80 net which was towed horizontally in three different regions (Yeosu, Namhae and Tongyoung) between May to September 2016. A total of fifty taxa were collected during the study. Among these, Engraulis japonicus, which accounted for 56.8 % of the total population, was the most dominant species, followed by Sillago japonicus, Parablennius yatabei, Gobiidae Type A, Parablennidae sp., and Omobranchus elegans as dominant taxa, that accounted for 87.5% of the total number of individuals. ANOSIM results revealed that regional groups were not separated, but seasonal groups were clearly divided with statistical significance, and these differences were caused mainly by water temperature variations identified by canonical analysis.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.10a
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• pp.300-301
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• 2000

우리나라 서해안은 조간대가 넓게 발달하여 있고 조차가 매우 크므로 물의 혼합이 잘 이루어져 먹이가 풍부하며, 탁도가 높아 포식의 위험이 적어 어류의 산란장이나 생육장으로 중요한 역할을 하고 있다. 어류는 난에서 부화하여 자치어기를 거쳐 성장하면서 성어가 되고 어업에 가입이 된다. 어류의 초기 발생 시기에는 주변해역의 환경요인에 영향을 가장 많이 받는 시기로 자치어 생존율은 어류 자원의 크기를 결정짓는다(May,1974). 따라서 어류 자원량 추정과 미래 자원량을 예측하기 위해서는 자치어의 출현량과 분포에 관한 연구가 중요한 정보가 된다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.342-343
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• 2000

대부분의 어류는 난과 자치어기를 지나 성어가 되면서 어장에 가입되므로 어란과 자치어의 분포밀도는 성어자원량을 파악하는데 중요하다. 일반적으로 물리적 환경 즉 수온과 해류는 어류 자치어의 분포, 성장 및 생존에 영향을 미치는 주된 요인으로 표층수온은 난의 발달과정을 조절하고 해류는 유영력이 미약한 자치어의 분포와 출현량에 영향을 미친다. (중략)

• Korean Journal of Ichthyology
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• v.36 no.2
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• pp.156-163
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• 2024

This study investigated the temporal patterns of species composition and abundance of larval fish assemblages through seasonal samplings in the coastal waters off Uljin, East Sea from April 2022 to February 2023. A total of 27 taxa of larval fishes were collected in the study area. The dominant fish larvae were Pseudopleuronectes herzensteini, Sebastes inermis, Ammodytes japonicus, Pseudopleuronectes yokohamae, Rudarius ercodes and Parablennius yatabei constituting 86.6% of total larval fish abundance. The number of species, abundance, and diversity index fluctuated according to season, showing the highest species number and abundance in April (spring) and diversity in July (summer). Larval fish assemblages were divided into three seasonal groups, including spring, summer and winter groups based on relative abundance of each fish larvae. Among abundant fish larvae, P. herzensteini predominated during spring, while P. yatabei and R. ercodes were abundant during summer. S. inermis, A. japonicus and P. yokohamae constituted the most abundant larval fish group during winter. These temporal changes in larval fish assemblages were attributed to seasonal changes in surface water temperature. The results from this study may elucidate our understanding of larval fish diversity and contribute to evaluating the nursery function of coastal habitats in the East Sea.

• 한국해양학회지
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• v.22 no.4
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• pp.236-245
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• 1987

Ichthyoplankton were sampled with Bongo net at 13 stations from Chonsu Bay to Keum Estuary from July, 1985 to June, 1986. 19 taxa of pelagic eggs and 45 taxa of larvae were collected. The key to identify the pelagic eggs is based on the number of oil gloubles, the shape of the egg, the sculpture of the chorion, and the size of the egg and the oil globules. The key to the families of fish larvae is based on the morphometric characters such as the body shape, the position of the anus, the pigmentation pattern, and others.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.569-570
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• 2001

민어(Miichthys miiuy)는 농어 목 (Perciformes), 민어과(Sciaenidae), 민어 屬(Miichthys)에 속하고, 우리나라 서남해, 황해, 발해, 일본의 중부이남 및 동중국해에 분포하는 어류이다(Chyung, 1998; 김 등, 1994; Lee and Park, 1992). 민어 과에 대한 연구로는 동갈민어(Nibea mitsukurii)의 자치어 형태발달(Kinoshita and Fujita. 1988), 한국산 민어 科 어류의 분류학적 재검토(Lee and Park, 1992), 수조기(Nibea albiflora)의 초기생활사(Takita, 1974), 동지나해의 조기(Pseudosciaena manchurica)와 부세(Pseudosciaena croea)의 자치어 형태발달(Yamada, 1973) 등의 보고가 있지만 민어의 난 발생과정 및 자치어의 발달에 관한 연구는 아직까지는 없다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.10a
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• pp.231-232
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• 2000

자치어의 소화생리에 대한 연구는 담수어인 잉어, 무지개송어 등과 해산어인 넙치, 혹돔 등의 연구가 있으나 자치어 단계에 서식지의 변화가 큰 어종에 대한 연구는 전무한 실정이다. 따라서, 본 연구는 담수생활의 자어기에서 해수생활의 치어기로 전환하는 황복의 초기단계에 소화효소의 변화과정을 밝히고, 온도ㆍ염분ㆍ빛 등의 환경요인과 소화효소와의 관계를 조사하고자 한다. (중략)