• Title/Summary/Keyword: marine fishes

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Current status of anisakid nematode larvae infection in marine fishes caught from the coastal area of Korea between 2010 and 2012 (2010~2012년 연안에서 서식하는 해산어에서 아니사키스 유충의 감염현황)

  • Kim, Wi-Sik;Jeon, Chan-Hyeok;Kim, Jeong-Ho;Kim, Do-Hyung;Oh, Myung-Joo
    • Journal of fish pathology
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    • v.25 no.3
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    • pp.189-197
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    • 2012
  • A survey was conducted to investigate infection of anisakid nematode larvae in 243 wild marine fishes caught from the southern coastal area of Korea between 2010 and 2012. The samples comprised fishes from 9 orders, 30 families and 50 species. Total infection rate of anisakid nematode larvae was 10.7% (26/243 fish), which comprised from Yeosu, 7.4% (7/95) in 2010 and 22.7% (5/22) in 2011; from Jeju, 8.2% (5/61) in 2011; from Wando, 40.9% (9/22) in 2012. Anisakid nematode larvae were not detected in Tongyoung and Wando samples in 2011. Molecular identification of the 89 worms from 26 fish was conducted by PCR-RFLP and/or sequence analysis of internal transcribed spacer (ITS) region of ribosomal DNA. From the results, 6 kinds of anisakis species were identified: Anisakis pegreffii (infection rate: 53.9%, 48/89 worms), Hysterothylacium aduncum (38.2%, 34/89), H. fabri (3.4%, 3/89), hybird (A. simplex X A. pegreffii) (2.4%, 2/89), A. simplex (1.1%, 1/89) and Raphidascaris lophii (1.1%, 1/89). The rate of single infection was 80.8% (21/26 infected fish), while 19.2% (5/26) showed mixed infection with 2 to 3 different anisakis species.

Seasonal variation and species composition of fishes communities in artificial reef unit at marine ranching area in the coastal waters off Jeju island, Korea (제주바다목장 해역 내 인공 어초군에 서식하는 어류군집의 종조성 및 계절변동)

  • Oh, Taeg-Yun;Cha, Hyung-Kee;Chang, Dae-Soo;Hwang, Choul-Hee;Nam, Yun-Ju;Kwak, Seok-Nam;Son, Min-Ho
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.46 no.2
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    • pp.139-147
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    • 2010
  • This study monitored a variety of marine fish communities in artificial reefs unit of the total 5 types (Dice type, Octagonal turtle type, Two-stage tube type, Gazebo type, Tetrapod type) which are located in the marine ranching at Jeju island by scuba diving in May, July, October and December 2009. Underwater photographing was accomplished at total 3 phases (condition of artificial reefs photographing, concentric circle movement photographing and line transect photographing). The preservation condition of artificial reefs facility was very good, and the dominant species were Chromis notatus, Sebastes thompsoni, Oplegnathus fasciatus and Halichoeres poecilopterus. Fish abundance was high in May and June, and low in October and December, 2009. Chromis notatus was dominant at the all types of artificial reefs, Halichoeres poecilopterus for Gazebo type and Tetrapod type of artificial reefs, and Sebastes thompsoni for Dice type, Octagonal turtle type and Two-stage tube type of artificial reefs.

Effects of Underwater Noise on Fishes (수중소음이 어류에 미치는 영향)

  • Yoon, Jong-Rak;Lee, Seong-Wook;Ahn, Soo-Yong;Park, Ji-Hyun;Bae, Jong-Woo;Ahn, Myung-Seog
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2006.11a
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    • pp.739-746
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    • 2006
  • Anthropogenic underwater sound such as ship radiated noise, pile driving noise. underwater explosive blast and so on, affects marine animals. This study describes the effects of underwater noise on fishes. The characteristics of noise, fish hearing and response, and sound propagation loss are analysed based on existing results and measured data in marine construction site. Finally, the safety zone range of fish on man made underwater noise is derived.

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Two Copepod Species of Nothobomolochus (Poecilostomatoida, Bomolochidae) Parasitic on Marine Fishes from Yosu Bay, Korea (한국산 어류에 기생하는 Nothobomolochus (Poecilostomatoida, Bomolochidae)속 2 종)

  • CHOI Sang-Duk;HONG Sung Yun;SUH Hae-Lip
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.27 no.6
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    • pp.794-802
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    • 1994
  • Two species of the parasitic copepod were recovered from two Korean fishes, Lateolabrax japonicus (Cuvier and Valenciennes) and Pampus argenteus (Euphrasen) taken from Yosu Bay, Korea. The present paper contains redescription of two species of Nothobomolochus of Bomolochidae. Both species, N. lateolabracis (Yamaguti and Yamasu) and N. triceros (Basset-Smith), are newly recorded from the Korean water. N. lateolabracis and N. triceros were found on the L. japonicus and P. argenteus, respectively.

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Four Species of Copepoda (Poecilostomatoida) Parasitic on Marine Fishes of Korea (한국산 해산어류에 기생하는 요각류 4종)

  • SUH Hae-Lip;SHIM Jae-Duk;CHOI Sang-Duk
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.25 no.4
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    • pp.291-300
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    • 1992
  • Four known species of the copepod parasite were recovered from three marine fishes of Korea. It contains redescription of three species of Acanthochondria(A. brevicorpa Yu, A. tchangi Yu and A. yui Shiino) and Anchistrotos kojimensis Do & Ho. All of these species are newly recorded from the Korean waters.

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Distribution Characteristics of Fishes by a Bottom Trawl in the Jointly Controlled Waters of the East China Sea (동중국해 한일공동수역에서 저서 어획물의 분포특성)

  • Kim, Min-Seok;Kim, Dong-Su
    • Journal of Fisheries and Marine Sciences Education
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    • v.22 no.3
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    • pp.330-340
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    • 2010
  • This study was investigated the species composition of demersal fishes by a bottom trawler GAYA, in order to be used basic data for resources management of fishery in the jointly controlled waters of the East China sea. We caught 52 species, 1,167 individuals and 186.171kg in biomass in summer, and 1,924 individuals and 200.871kg in biomass in winter The first dominant species in individuals in summer was Glossanodon semifasciatus, and in biomass was Dentex tumifrons. But that in winter was Ovalipes punctatus in both individuals and biomass. It was a special phenomenon that crustacea was to be the first dominant species compared with general offshore fishery in Korea. Catch per unit effort (kg/hr) of bottom trawl in winter was higher than that in summer. There was also big difference by station in the diversity index, the evenness index and the dominant index.

Optimal Growth Conditions for Carotenoid Pigment Production from marine Microorganism (해양미생물로부터 카로테노이드 색소의 생산을 위한 최적조건)

  • 정영기;김태수;정명주;류병호;주우홍;박정욱
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.6
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    • pp.1239-1243
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    • 1999
  • The optimal medium composition for the production of carotenoid pigment from Haloarcular sp. EH 1 as a dietary for fishes were 1.0% sucrose, 1.0% yeast extract, 25% sodium chloride, 0.3% sodium citrate, 0.2% potassium chloride, 2.0% magnesium sulphate, 0.002% ferric sulphate(pH 7.0). The incubation temperate, aeration rate and agitation speed were 40oC, 100ml medium/500ml vol. shaking flask, and 180 rpm/min. The carotenoid pigment production was highest after 5 days of incubation with the light.

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9th Indo-Pacific Fish Conference Review

  • Gwak, Woo-Seok
    • Korean Journal of Ichthyology
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    • v.25 no.3
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    • pp.182-184
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    • 2013
  • The 9th Indo-Pacific Fish Conference (IPFC9) was held in Okinawa, Japan from 24th to 28th June 2013. Five hundred and thirty two delegates from 36 countries/regions around the world attended. The Conference took place with a welcome address by Dr. Keiichi Matsuura in the Laguna Garden Hotel next to the Okinawa Convention Center in the evening of 23rd June 2013, one day before the official start of the IPFC9. The winners of the two IPFC9 Bleeker Awards, Jeffrey M. Leis (Ecology) and Gerald R. Allen (Systematics) provided excellent talks on "Change in the early life-history of Indo-Pacific Fishes" and "The center of Indo-Pacific reef fish diversity". A total of 462 papers were presented, including 328 oral and 134 poster presentations. The main themes of IPFC9 included systematics, evolution, zoogeography and phylogeography, biodiversity, ecology, behavior, and conservation. There were 14 symposia, which included topics such as "Top predatory fish in the Indo-Pacific ecosystems", "Fish diversity across environmental extremes", "Ontogeny and systematics of Indo-Pacific fishes", and "Phylogenetics and diversification of the Percomorpha". IPFC10 will be held in Papeete, Tahiti.

Vitellogenin Production of Marine Fishes Exposed to E2 (17$\beta$-estradiol 처리에 따른 해산 어류의 vitellogenin 생성)

  • 황인영;박정규;이은경
    • Environmental Analysis Health and Toxicology
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    • v.16 no.1
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    • pp.21-28
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    • 2001
  • A common used endpoint in bioassays testing the estrogenicity of chemicals including endocrine disruptors is the induction of egg yolk Precursor vitellogenin in male fish. Two marine fishes (Sebastes schlegeli and Paralichthys olivaceus) were exposed to the 17$\beta$-estradiol(E2) to determine the vitellogenin production. Vitellogenin was measured in fish blood using SDS-PAGE and Densimetry. Results showed that exposure to E2 caused vitellogenin in male fish. Especially, vitellogenin levels in young fish were about 4 times higher than in adult fish, which means young fish are more sensitive to E2 exposure. And plasma vitellogenin in fish increased related to E2 concentration and exposure duration.

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New Records of the Labrid fishes, Cheilio inermis and Labroides dimidiatus from Korea (한국산 놀래기과(科) 어류 2미기록종)

  • Koh, Jeong-Rack;Kim, Yong-Uk;Myoung, Jung-Goo
    • Korean Journal of Ichthyology
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    • v.7 no.1
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    • pp.1-7
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    • 1995
  • Labrid fishes, Cheilio inermis and Labroides dimidiatus were collected around Cheju Island, between April-August, 1993, and described herewith as new to the Korean fish fauna. Labroides dimidiatus was originally described as Cossyphus dimidiatus by Cuvier and Valenciennes(1839), then reclassified as genus Labroides by Randall(1958). Underwater observations of Labroides dimidiatus have revealed the unusual food habit of removing ectoparasites from other fishes. Cheilio inermis was originally described by Forssk${\aa}$l(1775). It is distinguished from the other labrid fishes by the continuous lateral lines and elongated body form.

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