• Title/Summary/Keyword: isopoda

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New Report of Two Species of Genus Pentias (Crustacea: Malacostraca: Isopoda) from South Korea

  • Song, Ji-Hun;Min, Gi-Sik
    • Korean Journal of Environmental Biology
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    • v.33 no.2
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    • pp.177-181
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    • 2015
  • Two marine isopods, Pentias hayi Richardson, 1904 and P. thompsoni Collinge, 1916 were verified as unrecorded species in South Korea. The genus Pentias is reported for the first time in South Korea. These two isopods were collected from Heuksan-do Island and Ulleung-do Island from South Korea, respectively. We provide descriptions of the diagnostic characteristics, illustrations of two species and their partial sequences of the mitochondrial cytochrome c oxidase subunit 1 (CO1) for molecular characteristics.

Two New Species of the Genus Nesodillo (Isopoda, Oniscidea, Armadillidae) from Philippines

  • Jeon, Dae-Soo;Kwon, Do-Heon
    • Animal Systematics, Evolution and Diversity
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    • v.25 no.2
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    • pp.189-195
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    • 2009
  • Two new species of the genus Nesodillo Verhoeff, 1926, N. kimi and N. philippinensis, are described from Philippines. For the shape of frontal shield, Nesodillo kimi resembles N. monticola (Vandel, 1973) from New Guinea, but differs from it in the shape of male pleopod 1 exopod. N. philippinensis is distinguished from N. kimi by the shape of frontal shield not depressed in the middle of upper border, and of telson with broadly rounded distal margin.

Diets of the Rock Trout, Agrammus agrammus, in the Shore Area of Tongbaeksom, Pusan (부산 동백점 연안에 서식하는 노래미 Agrammus agrammus의 먹이생물)

  • KIM Chong Kawn;KANG Yong Joo
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.19 no.5
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    • pp.411-422
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    • 1986
  • Diets of the rock trout, Agrammus agrammus, in the shore area of Tongbaeksom, Pusan over the period of July 1981 to June 1982 were studied. Specimens were sampled by angling. Stomach analysis showed that the rock trout fed mainly on epibenthic food in the littoral zone along the coast of Tongbaeksom. The food organisms of the enviornment were studied by means of underwater sampling around the angling area for this study. Although the food items of the fish changed slightly with season and age-group, main food items were Amphipoda (Gammaridae, Caprellidae) and Isopoda (Sphaeromidae, Idotheidae). This suggests that the diets of A. agrammus mainly comprised epibenthic food. Food diversity increased with age. The fish almost consummed on smaller food in size, but had selective predation according to food size, i. e. on larger food as age increases. These data provide additional support for the importance of the detritus-benthos-consummer type food chain.

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A New Report of Anthurid Isopod (Crustacea, Isopoda, Anthuridae) from Korea

  • Kim, Sung Hoon;Yoon, Seong Myeong
    • Animal Systematics, Evolution and Diversity
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    • v.34 no.3
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    • pp.174-180
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    • 2018
  • In this study, Caenanthura engimatica (Kensley and Reid, 1984) is newly reported from Korea along with detailed description and illustrations. This species can be characterized by the following features: cephalon has a rostrum extending as long as anterolateral lobes; pereonites 4-6 have shallow middorsal pits; the mandible palp has 2 articles; article 1 of the mandible palp is twice longer than article 2; and the maxillipedal palp has 1-3 fused and 4-5 fused articles. This is the first report of C. engimatica beyond Arabian Gulf, the type locality, and Indian Ocean. Additionally, we proposed a revised key to known species of the genus Caenathura Kensley, 1978.

Species composition and community structure of benthic crustacean assemblage around Oryukdo in southeastern waters off Korea (오륙도 주변해역 저서 갑각류 (Crustacea)의 종조성과 군집구조)

  • Heo, Yu-Sim;Choi, Jung-Hwa;Kim, Jung-Yun;Lee, Dong-Woo
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.50 no.4
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    • pp.604-613
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    • 2014
  • Community structures and species composition in benthic crustacean around Oryukdo of Busan was investigated using a SCUBA diving in 2011. A total 115 species, 51 families, and 4 taxa were collected during the sampling periods. Species were included 52 species in amphipoda, 49 in decapoda, 8 in isopoda and 6 in thoracica. On cluster analysis, the benthic crustacea community was classified into three groups based on the species composition: group A occurred in spring, group B in autumn and winter and group C in summer. Species composition in benthic crustacean corresponded with the water temperature.

Noneffective Results of Steinernematid and Hoterorhabditid Nematodes Agains Pill bug, Armadillidium vulgare (Isopoda : Armadillidae) (Steinernematid와 Heterorhabditid 선충의 쥐며느리에 대한 비효용적결과)

  • 추호렬;이동운;허은영;김준범
    • Korean journal of applied entomology
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    • v.35 no.1
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    • pp.91-93
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    • 1996
  • Steinemematid and heterorhabditid nematodes were not effective to control the piU bug, Armadillidium vulgare although these nematodes were able to infect pill bugs. Steinernema carpocapsae Pocheon strain and S. glaseri Dongrae strain were more effective than S. carpocapsae AU strain or Heterorhabditis bacteriophora. Nematode concentration was more important factor than host density to develop infectivity.

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A New Species of the Genus Burmoniscus (Isopoda, Oniscidea, Philosciidae) from Ko Phuket, Thailand

  • Jeon, Dae-Soo;Kwon, Do-Heon
    • Animal Systematics, Evolution and Diversity
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    • v.25 no.2
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    • pp.183-187
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    • 2009
  • A new species, Burmoniscus phuketensis, is described from Ko Phuket, Thailand. The new species belongs to the group characterized by male pereopods 1 and 2 with enlarged and flattened carpi, including B. coecus (Budde-Lund, 1895), B. ferrarai (Schumalfuss, 1983), B. mossambicus (Ferrara and Taiti, 1985), B. rowei Taiti and Manicastri, 1988, and B. rakataensis Green, Ferrara and Taiti, 1990. Among them, this new species resembles B. coecus and B. rakataensis in the pigmentless body and the shape of pereonite 7 epimeron with acute postero-lateral corner, but is easily distinguished from both specie by the shape of telson. While the eyes are absent in B. coecus, they are present in this new species.

Ianiropsis (Isopoda, Asellota, Ianiridae) from Korea, with Description of a New Species (한국산 수염갯가좀속 등각류 (물좀아목, 바다좀과) 의 기재 및 1 신종)

  • 장인권;권도헌
    • Animal Systematics, Evolution and Diversity
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    • v.6 no.2
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    • pp.193-208
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    • 1990
  • Ianiropsis material collected from 11 localities of the Korean coasts were studied . Six species including one new species were identified to be new to Korea ; Ianiropsis derjugini Gurjanova, I.setifera Gurjanova, I. epilittoralis Menzies , I. tridens Menzies, I. serricaudis Gurjanova and I.koreaensis n.sp. All species are described and figured with a key to the Korean species of the Ianiropsis.

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New Records of Gnathiid and Limnoriid Species (Malacostraca, Peracarida, Isopoda) in Korean Fauna

  • Kim, Sung Hoon;Yoon, Seong Myeong
    • Animal Systematics, Evolution and Diversity
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    • v.36 no.3
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    • pp.202-211
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    • 2020
  • Two isopods, Elaphognathia lucanoides Monod, 1926 and Limnoria saseboensis Menzies, 1957, are newly recorded in Korean fauna. Elaphognathia lucanoides can be distinguished from its congeners by the following characteristics combined: the cephalon is strongly excavated on the anterior margin; the paraocular ornamentation is forming a ridge distinctly; and the mandible is longer than cephalon. Limnoria saseboensis differs from the related species by the following features: pleonite 5 has two parallel longitudinal carinae; the pleotelson has one or two pairs of tubercles and two carinae; and the tubercles are present on the posterior margin of the pleotelson. In this paper, detailed descriptions and figures of these two species are provided.

DNA Barcoding of Eurydice longiantennata (Isopoda, Cymothooidea, Cirolanidae) from South Korea

  • Kim, Sung Hoon;Choi, Hyun Ki;Kim, Jong Guk
    • Animal Systematics, Evolution and Diversity
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    • v.37 no.4
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    • pp.354-357
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    • 2021
  • In Korean waters, the cirolanid isopod, Eurydice longiantennata Nunomura and Ikehara, 1985 has been reported only from the subtidal zone of Jeju island. We obtained the mitochondrial cytochrome c oxidase subunit I (COI) sequences of this species and determined the DNA barcoding data of E. longiantennata based on a genetic comparison of E. longiantennata and its congeners. The intra-specific genetic distance between the three COI sequences of E. longiantennata ranged from 0 to 0.6%. The inter-specific distances between E. longiantennata and other cirolanid isopods ranged from 24 to 33.2%. In this study, we provided the DNA information of E. longiantennata with a morphological diagnosis and images of the species.