• Title/Summary/Keyword: Decapoda

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Early zoeal stages of edible crab Erimacrus isenbeckii (Brandt, 1848) (Crustacea: Decapoda: Brachyura: Cheiragonidae) and a comparison with other cheiragonid zoeae

  • Lee, Chu;Ko, Hyun-Sook
    • Animal cells and systems
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    • v.14 no.4
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    • pp.323-331
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    • 2010
  • Ovigerous crabs of Erimacrus isenbeckii were collected from the northeastern coast of South Korea and their larvae were reared in the laboratory. Two zoeal stages were described and illustrated in detail. The first zoeal characteristics between the present material and Sasaki and Mihara's (1993: J Crust Biol. 13:511 522) were different especially in the setations of the endopods of the maxillipeds. The zoea of Erimacrus isenbeckii strongly resembled those of two Telmessus species in the Cheiragonidae, but the former could be distinguished from the latter by having spinulate carapace spines, a lateral process on the abdominal somite 3, and longer lateral spines on the telson fork.

Complete larval development of Pyromaia tuberculata (Crustacea: Decapoda: Majoidea: Inachoididae)

  • Oh, Seong-Mi;Ko, Hyun-Sook
    • Animal cells and systems
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    • v.14 no.2
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    • pp.129-136
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    • 2010
  • The introduced spider crab Pyromaia tuberculata was collected from Korea in 2005 and it was ovigerous. After hatching, larvae were reared in the laboratory at $20^{\circ}C$. The larval stage of the species consists of two zoeal and one megalopal stages. The larvae of the Korean species differ somewhat from those from New Zealand described by Webber and Wear (1981; N Z J Mar Freshwat Res. 15:331-383) and from Brazil described by Fransozo and Negreiros-Fransozo (1997; Crustaceana. 70:304-323.) in the setal presence of the antennule, the maxillule, the maxilla and the maxillipeds, and the abdomen. It is found that Fransozo and Negreiros-Fransozo have overlooked some setae on the basis of the zoeal maxillipeds and that re-examination of their larvae is needed. Also, it is found that the Inachoididae is heterogeneous based on the zoeal morphology because two distinct groups exist in the family.

Larval development of Scyra acutifrons (Crustacea: Decapoda: Epialtidae) with a key from the northern Pacific

  • Oh, Seong-Mi;Ko, Hyun-Sook
    • Animal cells and systems
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    • v.14 no.4
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    • pp.333-341
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    • 2010
  • The larvae of Scyra acutifrons are described and illustrated for the first time. The larval stage consists of two zoeal and a megalopal stages. The zoea of S. acutifrons is compared with those of other known species of the Epialtidae from the northern Pacific. The zoea of Scyra acutifrons can be easily distinguished from that of S. compressipes by having a longer rostral carapace spine and an endopod of maxillule with three setae. It is found that the genus Scyra (Pisinae) shows a great similarity to Pisoides bidentatus (Pisinae) and the genus Pugettia (Epialtinae) in the family Epialtidae; especially, S. acutidens coincides well with two Pugettia species (Pugettia incisa and P. gracilis) in the characteristics of the zoeal mouthpart appendages. To facilitate the study of plankton-collected material, a provisional key to the known zoeae of the Epialtidae from the northern Pacific is provided.

Redescription of the First Zoea of Microcassiope orientalis (Crustacea: Decapoda: Xanthidae)

  • Lee, Seok Hyun
    • International Journal of Advanced Culture Technology
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    • v.8 no.2
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    • pp.277-282
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    • 2020
  • The first zoea of Microcassiope orientalis is described and illustrated from laboratory hatched materials. Comparisons with previous studies of the first zoeal stages in the Xanthidae from Korean waters, revealed that some former studies were incorrected. The first zoea of M. orientalis described by Ko was identical to the first zoea of Macromedaeus distinguendus described by Terada. In addition, zoeal stages of Nanocassiope granullipes described by Ko & Clark was revealed the zoeal stages of M. cassiopes. So, the first zoea of M. orientalis is redescribed and illustrated in detailed with color photo herein, and compare its morphological characteristics with previous described zoea of N. granulipes by Ko & Clark.

The first record of Conchodytes nipponensis (De Haan, 1844) (Crustacea: Decapoda: Palaemonidae) associated with pen shell Atrina pectinata (Linnaeus, 1767) (Mollusca: Bivalvia) from Korea

  • Lee, Seok Hyun;Ko, Hyun Sook
    • Journal of Species Research
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    • v.2 no.1
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    • pp.1-6
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    • 2013
  • Conchodytes nipponensis (De Haan, 1844), a caridean shrimp living in the mantle cavity of a pen shell (Atrina pectinata) is reported for the first time from Korea. It was collected from a depth of 15 m depth. Its morphology is described and illustrated, and a color image of a living specimen is provided. This is at the same time the first record of the genus Conchodytes, and the first record of a bivalve mollucs associated shrimp, from Korea.

First Zoea of Rhynchocinetes uritai(Decapoda: Caridea: Rhynchocinetidae) (끄덕새우 (갑각강 : 생이하목 : 끄덕새우과)의 제1조에아 유생)

  • Yang, Hoi-Jeong;Park, Jong-Bum
    • Animal Systematics, Evolution and Diversity
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    • v.20 no.1
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    • pp.1-8
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    • 2004
  • The first zoea of R. uritai is described in detail, based on laboratory-hatched material. The first zoea of R. uritai can be distinguished from that of R. conspiciocellus and R. durbanensis by the rostrum downwards, overreaching distal margin of the outer flagellum of the antenna, the endopod of the antenna with short seta as well as long plumose seta distally, and the scale of the antenna six-segmented. The shape of the telson can be a distinguishing character of the first zoea of Rhynchocinetes from that of Cinetorhynchus.

New Reports of Snapping Shrimps, Alpheus paralcyone and A. spongiarum (Decapoda: Caridea: Alpheidae) from Korea (한국미기록 원통발딱총새우와 해면원통발딱총새우(십각목 : 생이절 : 딱총새우과) 의 보고)

  • Hyeyoung Koo;Kim, Won
    • Animal Systematics, Evolution and Diversity
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    • v.20 no.1
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    • pp.21-29
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    • 2004
  • As a result of continuous taxonomic study on shrimps collected from Korean waters, two alpheid shrimps, Alpheus paralcyone and A. spongiarum, are newly reported from Korean waters. These species belong to the crinitus group of the genus Alpheus. Korean Alpheidae fauna now consists of 18 species of six genera.

First Record of Snapping Shrimp, Automate dolichognatha(Decapoda: Caridea: Alpheidae) in Korea (한국미기록 나안딱총새우 (십각목: 생이절: 딱총새우과)의 보고)

  • Hyeyoung Koo;Kim, Won
    • Animal Systematics, Evolution and Diversity
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    • v.20 no.1
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    • pp.39-44
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    • 2004
  • The alpheid shrimps collected from Jeju-do turned out to belong to the genus Automate unreported from Korean waters. Automate dolichognatha is recorded for the first time in Korean waters. Korean Alpheidae fauna now consists of 19 species of seven genera.

New Records of Hippolytid Shrimps(Crustacea: Decapoda: Caridea) from Korea (한국미기록 꼬마새우류 (갑각강 : 십각목 : 생이하목))

  • Yang, Hoi-Jeong;Kim, Jung-Nyun
    • Animal Systematics, Evolution and Diversity
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    • v.20 no.1
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    • pp.9-19
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    • 2004
  • Three hippolytid shrimps, Hippolyte acuta, Latreutes acicularis, and Latreutes laminirostris are reported from Korean waters. The former two species represent new records for the Korean marine fauna. L. laminirostris, previously known from Korea, is redescribed. A key to Latreutes species from Korean waters is given. The Korean Hippolytidae consists now of 19 species of nine genera.

The Marine Decapod Crustaceans of Geojedo Island and Its Adjacent Islets, Korea (거제도의 해산 십각류)

  • Sa Heung Kim;Won Kim
    • Animal Systematics, Evolution and Diversity
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    • v.14 no.3
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    • pp.293-309
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    • 1998
  • A taxonomic study for clarifying the decapod fauna of Gejedo Island, Korea was performed. Seventy nine species in 28 families were identified through the present investigation and of which 9 species of shrimps, 7 species of anomurans, and 39 species of crabs are newly added to the decapod fauna of this area. With the previously known 40 species, a total of 93 decapod species from this island and its adjacent islets are listed, and Pugettia quadridens intermedia Sakai, 1939 is redescribed with illustrations. The zoogeographical aspects of Geojedo Island are also discussed based on the composition of geographical forms of brachyuran decapods.

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