• Title/Summary/Keyword: Amphipoda

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Caprellid Fauna (Amphipoda: Caprellidae) of Goheung Peninsula, Korea

  • Lee, Kyung-Sook;Hong, Soon-Sang
    • Animal Systematics, Evolution and Diversity
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    • v.25 no.3
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    • pp.317-323
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    • 2009
  • Seventeen caprellid species are reported from adjacent waters, of the Goheung Peninsula, Jeollanam-do in June, 2008. Among them Paracaprella crassa Mayer, 1903 is newly added to the Korean fauna. We described this species with illustrations and mentioned some differences from the original description and subsequent redescriptions. As a result, Korean caprellid fauna consists of 34 species in 6 genera.

Newly Recorded Lysianassid Species, Orchomene japonicus (Crustacea: Amphipoda) from Korea

  • Jung, Jong-Woo;Kim, Won
    • Animal Systematics, Evolution and Diversity
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    • v.24 no.1
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    • pp.139-142
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    • 2008
  • A lysianassid species, Orchomene japonicus (Gurjanova, 1962) associated with sea squirts collected from Geojedo Island located in the South Sea of Korea, is described and illustrated. Present specimens conform to that of Gurjanova's except some morphological variation in mandibular palp.

Two Newly Recorded Species of Pareurystheus (Crustacea: Amphipoda: Corophiidae) from Korea

  • Kim, Young-Hyo;Lee, Kyung-Sook
    • Animal Systematics, Evolution and Diversity
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    • v.24 no.1
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    • pp.107-114
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    • 2008
  • Two species of Pareurystheus belonging to the family Corophiidae are added to the Korean fauna: Pareurystheus latipes Tzvetkova, 1977 and P. anamae (Gurjanova, 1952). P. latipes is similar to the P. anamae in the most of morphological characteristics. However, two species differ in the forms of antenna 1, gnathopod 2, pereopods 5-7 and telson. This genus Pareurystheus is reported for the first time from Korea. They are described and figured in detail.

One New Species of Freshwater Jesogammaws (Crustacea, Amphipoda, Anisogammaridae) from South Korea (한국 담수산 Jesogammarus(Crustacea, Amphipoda, Anisogammaride)의 1신종)

  • 이경숙;서인순
    • The Korean Journal of Zoology
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    • v.35 no.3
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    • pp.344-349
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    • 1992
  • The anisogammaridean specimens urere collected in a swamp near the lake in Kangnung, Kang-won-do province in South Korea in June 1986 and November 199G. The examined specimens were identified as a new species belongs to Jesogqmmaws (Jesogammows). It was fully described ann illustrated under the name of Jesogummaws (Jesogommows) ilhoii.

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Two New Records of Dexaminidae (Crustacea: Amphipoda) from Korea

  • Kim, Young-Hyo;Eun, Ye;Lee, Kyung-Sook
    • Animal Systematics, Evolution and Diversity
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    • v.22 no.1
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    • pp.37-49
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    • 2006
  • Two species of the family Dexaminidae, Paradexamine fraudatrix Tzvetkova, 1976 and Paradexamine gigas Hirayama, 1984 are newly recorded from the Korean fauna. They are redescribed and figured in detail. The genus Paradexamine is reported from Korea for the first time.

A newly record species Orientomaera incisa (Crustacea, Amphipoda, Maeridae) from East Sea, Korea

  • Jae-Hong Choi;Young-Hyo Kim
    • Journal of Species Research
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    • v.12 no.4
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    • pp.294-298
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    • 2023
  • A newly recorded species Orientomaera incisa Ariyama, 2020, belonging to the family Maeridae Krapp-Schickel, 2008, was collected from the sublittoral waters of the East Sea, Korea. Previously, only one species, O. brevispina (Kim and Kim, 1991), was reported in Korea. This species morphologically similar to O. brevispina however, the species can be easily distinguished from the O. brevispina by having two distinct teeth on palm of gnathopod 2. The newly recorded species is described and fully illustrated in the present study.

Marine Prey Selectivity of Released Juvenile Chum Salmon (Oncorhynchus keta) During arly Marine Migration in Korean Waters (방류 연어, Oncorhynchus keta 치어의 해양 먹이선택성)

  • Kwon, O-Nam;Kim, Ju-Kyoung;Yoon, Moon-Geun;Kim, Doo-Ho;Hong, Kwan-Eui
    • Journal of Fisheries and Marine Sciences Education
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    • v.26 no.2
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    • pp.421-429
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    • 2014
  • We investigated the feeding ecology of juvenile chum salmon (Oncorhynchus keta) during the critical early life stage prey selectivity of juvenile chum salmon during early marine migration in Korean waters at spring 2011. Salmon juveniles and zooplanktons were collected to draw with $20m{\times}5m$ gill net and $300{\mu}m$ mesh zooplankton net at each station on 11th-13th April n 2011. Collected zooplanktons were classified to 5 Phylum, 6 Class, 9 Order 17 Species in this study. Almost 76.4-100% species were classified to Phylum Arthropoda, dominant species was a species out of Hyperia galba of Order Amphipoda, Acartia spp and Paracalanus parvus of Order Calanoida. Collected salmon juveniles were grew up to average 4.7-5.4 cm fork length and average 1.0-1.5 g wet weight in whole station. Fish stomach content (mg/salmon) was heaver to 97.4, 82.4 and 63.2 mg wet weight/salmon in ST 2, 3, 4 than 20.4, 18.9 mg/salmon of ST 1, 5, because there are fish (sand eel, Hypoptychus dybowskii) and Krill (Euphausia) as prey in salmon stomach in ST 2, 3, 4. And ST 2, 3, 4 and 5 were dominated by Amphipoda as Hyperia galba, Themisto japonica and Gammarus sp., but ST 1 was dominated by copepod, because of absence of Amphipoda in the station. Therefore small Amphipoda as Hyperia galba was good prey for just released salmon juvenile in nature.

Caprellids (Amphipoda, Caprellidae) from the East Sea in Korea (한국 동해 해역의 바다대벌레류 (단각목))

  • 이경숙;이창목
    • The Korean Journal of Zoology
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    • v.36 no.3
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    • pp.353-366
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    • 1993
  • This study on Korean capreilids (Amphipoda, Capreiiidae) was based on the materlais collected from 23 locailties in the coast of the East Sea and the Ulrung Island. 17 species of genus Caprella were identified. Among them, 3 species are newly reported from Korea: Caprella cristibrachium Mayer, 1903, C. linearis (Linnaeus, 1767) and C. mixta Mayer, 1903. 6 species are new records from the East Sea: Caprella brevirostris Mayer, 1903, C. decipiens Mayer, 1890, C. equilibra Say, 1818, C. gigantochir Mayer, 1903, C. tsugarensis Utinomi, 1947 and C. verrucosa Boeck, 1872. As a result, Korean caprellid fauna consists of 5 genera, 30 species.

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Feeding Habits of Hexagrammos otakii off the Yoesu Coast of Korea (여수 연안에서 서식하는 쥐노래미(Hexagrammos otakii)의 식성)

  • Jung, Jin Ho;Kim, Heeyong;Moon, Seong Yong
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.55 no.5
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    • pp.705-713
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    • 2022
  • The feeding habits of Hexagrammos otakii were studied by analyzing the stomach contents of 508 specimens collected from July 2009 to December 2010 off the Yeosu coast of Korea. The total length of the H. otakii specimens ranged from 10.7 to 41.5 cm. H. otakii was found to be a bottom-feeding carnivore that mainly consumed brachyura, amphipoda, but also sonsumed cephalopoda, pisces, anomura, polychaeta, and gastropoda. It was shown through relative importance analysis that the benthic share was 58.1% for brachyura, 24.5% for amphipoda, 7.5% for caridea, and 7.3% for pisces. Brachyura was the main prey item for H. otakii, occupying 35% of the stomach contents. The proportion of brachyura and amphipoda decreased with the growth of H. otakii, and their decrease paralleled the increased consumption of pisces. The shift in feeding habits to larger prey organisms with increasing fish size seems to be one of survival strategies to maximize net energy gain.