• Title/Summary/Keyword: Pilumnus minutus

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The Zoeal Stages of Pilumnus minutus De Haan, 1835 (Decapoda ; Brachyura: Pilumnidae) in the laboratory (애기털보부채게(갑각강, 단미목, Pilumnidae)의 zoea 유생)

  • Hyun Sook Ko
    • Animal Systematics, Evolution and Diversity
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    • v.10 no.2
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    • pp.145-155
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    • 1994
  • The zoeal development of the pilumnid crab, Pilumnus minutus De Haan, 1835 consisted of 4 zoeal stages. The duration of the zoeal stages was at least 15 days at $25^{\circ}C$. The morphology of the zoeal stage is described in detail, and comparisons are made with the known larvae of other species of the family pilumnidae. The Pilumnus minutus zoea strongly resembles zoeae of other species of the genus Pilumnus in the mouthpart setation and the carapace spines, but shows some differences in the abodominal lateral knobs. the Pilumnus minutus zoea has some affinities with the Parapilumnus trispinosus zoea by having the abodominal lateral knobs on somites 2, 3, 4 and 5.

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Larval Development of Pilumnopeus granulata Balss, 1933 and Pilumnus minutus De Haan, 1835(Crustacea: Brachura: Pilmnidae), with a Key to the Known ilumnid Zoeae

  • Ko, Hyun-Sook
    • Animal cells and systems
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    • v.1 no.1
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    • pp.31-42
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    • 1997
  • The larval stages of Pilumnopeus granulata and the megalopal stage of Pilumnus minutus are described in detail. Comparisons are made with the known larvae of other species of the pilumnid genera, and the provisional key is provided for the pilumnid zoeae. The brachyuran genera Heteropanope, Heteropilumnus, Actumnus, Pilumonopeus, Pilumnus, Parapilumnus, and Benthopanpe are clearly classified on the basis of the zoeal characteristics, such as the lateral carapace spine, dorsal carapace spine, maxillule, and abominal lateral knobs.

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Zoeal Stages of Harrovia japonica (Decapoda: Brachyura:Pilumnidae) with a Key to the Known Eumedoninid Zoeae from the Indo-Pacific

  • Lee, Seok-Hyun;Ko, Hyun-Sook
    • Animal cells and systems
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    • v.13 no.2
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    • pp.213-222
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    • 2009
  • We obtained four zoeal stages of Harrovia japonica from laboratory-hatched material. They are described, illustrated in detail, and compared with those of other known species in the family Pilumnidae. The general zoeal morphology of H. japonica coincides well with those of other known species of the Eumedoninae (excluding Echinoecus pentagonus) and Pilumnus minutus of the Pilumninae. In order to facilitate the study of planktoncollected material, we provide a key for the identification of seven known zoeae of the Eumedoninae from the IndoPacific.

The Brachyuran Crabs (Crustacea ; Decapoda) of Chindo Island , Korea (진도의 게류(갑각상강: 십각목))

  • Won Kim;Sa Heung Kim
    • Animal Systematics, Evolution and Diversity
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    • v.11 no.4
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    • pp.497-508
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    • 1995
  • The ten species , Nobilum japonicum japonicum , Paradorippe granulata, Pilumnus minutes, Carcinoplax vestitus, Eucrate crenata, Uca lactea. Ilyoplax pingi, Nanosesarma gordoni, Achaeus tuberculatus, Parthenope validus, are added to the brachyuran fauna of the Chindo Island and its adjacent islets. With the previsouly known 36 species , total 46 speices from the Chindio I. and its adjacentislets are listed and two grapsid species, Hemigrapsus longitarsis and Sesarma erythrodactyla , are redescribed with illustrations.

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Variation of Community Structure of Decapods by Season and Depth near Oryuk Islets off Busan, Korea (오륙도 주변해역 십각류의 계절별 수심별 종조성과 군집구조)

  • PARK, Hyun-Jung;PARK, Won-Gyu;CHOI, Jung-Wha;LEE, Bo-Ram
    • Journal of Fisheries and Marine Sciences Education
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    • v.29 no.1
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    • pp.257-269
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    • 2017
  • The occurrence variations of decapods by season and depth off Oryuk Islets, Busan were investigated at seven stations in April and October 2009, July 2010 and January 2011. Decapods were collected by SCUBA diving at 5 m and 10 m depths. 46 species belonging to 18 families in 3 orders were identified. Pilumnus minutus, Pugettia intermedia, Pachycheles stevensii, and Paguristes japonicus were dominant species, comprising 73.0% of total decapods. P. minutus and P. intermedia were abundant in all seasons (except summer) while P. stevensii and P. japonicus were abundant in fall and summer. Dominant species were divided into three groups (resident species, seasonal species and temporary species) on the basis of their occurrence patterns. P. minutus and P. intermedia were resident species while P. stevensii, P. japonicus were temporary species. The species number, density and biomass of decapods were fluctuated by seasons. They were highest in fall and lowest in winter. This study implied that the variations of species number and density of decapods were significantly related with seasonal change of water temperature.