• Title/Summary/Keyword: sublittoral

Search Result 30, Processing Time 0.021 seconds

Systematic Studies on the Cirripeds (Crustacea) from Korea: I. Balanomorph Barnacles (Cirripedia, Thoracica, Balanomorpha)

  • Kim, Il-Hoi;Kim, Hoon-Soo
    • The Korean Journal of Zoology
    • /
    • v.23 no.3
    • /
    • pp.161-194
    • /
    • 1980
  • The authors examined intertidal and sublittoral balanomorph barnacles which were collected from 38 localities in South Korea during the period from 1963 to 1978. 2. Identified and classified materials are composed of 15 species and 2 subspecies, all of which are described, under 10 genera and 5 damilies, of which 2 species and 1 subspecies are new to Korea as follows: Chelonibia patula, Chirona (Striatobalanus) amaryllis, Solidobalanus (Hesperibalanus) hesperius hesperius. 3. As dominant species, Chthamalus challengeri and Tetraclita squamosa japonica are widely distributed in Korea through East Sea, South Sea and Yellow Sea. 4. Balanus albicostatus and B. kondakovi are commonly found in intertidal brackish waters of Yellos Sea and South Sea, whereas, B. trigonus and Megabalanus rosa are typical sublittoral forms.

  • PDF

Four unrecorded species of free-living nematodes from the sublittoral zone in the East Sea, Korea

  • Jung-Ho Hong;Kichoon Kim;Seunghan Lee;Kanghyun Lee
    • Journal of Species Research
    • /
    • v.13 no.2
    • /
    • pp.147-158
    • /
    • 2024
  • Four species of the free-living nematodes were collected from marine sediments in the sublittoral zone in the East Sea, Korea and were identified, described, and illustrated. Paranticoma tricerviseta Zhang, 2005, originally described from the Bohai Sea, China, is recorded for the first time in the East Sea, Korea; only in body length and thickness (1902-2282 ㎛ compared to 2472-3300 ㎛, 50-62 ㎛ compared to 57-82 ㎛, respectively). Specimens of Parodontophora marina Zhang, 1991, from East Sea, Korea largely agrees with the original description of Zhang (1991) of nematodes from the Bohai Sea, except for differences in body length and thickness (1190-1345 ㎛ compared to 1235-1408 ㎛, 40-44 ㎛ compared to 42-72 ㎛). Terschellingia longicaudata de Man, 1907 is reported for the first time in Korea, but was previously considered a cosmopolitan species of nematodes with a widespread distribution from the North Sea, Belgium to the Exclusive Economic Zone of New Zealand; it differs from the original description in body thickness(30-38 ㎛ vs. 40-62 ㎛). Vasostoma brevispicula Huang & Wu, 2011, originally described from the subtidal muddy sediment in the Yellow Sea, China, is newly reported in Korea; apart from a few minor morphological differences, body length and thickness (2009-2425 ㎛ vs. 2119-2906 ㎛, 41-48 ㎛ vs. 37-58 ㎛). The present study on unrecorded species improves our understanding of nematode species diversity in Korean waters.

Two New Thalestrid Harpacticois (Copepoda, Harpacticoida, Thalestridae) from Korea

  • Chang, Cheon-Young;Song, Sung-Joon
    • Animal cells and systems
    • /
    • v.1 no.2
    • /
    • pp.297-304
    • /
    • 1997
  • Two new harpacticoid species of family Thalestridae are described on the basis of the specimens collected from the shallow sublittoral sand bottom or seagrasses of rocky shore in South Korea. Dactylopusia pauciarticulata n. sp. is discernible from its 19 congeners by the 6-articulated antennule. Paradactylopodia koreana n. sp. most resembles P. striata Kunz, 1973 of its seven congeners, but obviously distinguished from it by the shape of male leg 2 endopod.

  • PDF

UNRECORDED MARINE ALGAE FROM KOREA IV

  • LEE Ki-Wan
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.22 no.1
    • /
    • pp.9-18
    • /
    • 1989
  • Six species of marine algae new to Korea are described. Among them, five species belong to the Rhodophyta: Calaxaura clavigera Kjellman, G. hystpix Kjellman, Chrysymenia grandis Okamura, Delisea okadai (Yamada) Chihara et Yoshizaki and Webrella micans Hauftfleisch, and one to Phaeophyta: Saundersella saxicola Inagaki. Chrysymenia grandis and Delisea okadai are collected on the seashore after heavy storm, while the other four are from the upper part of sublittoral zone.

  • PDF

Marine Gastrotrichs of the Genus Diplodasys (Macrodasyida: Thaumastodermatidae) from Korea

  • Lee, Ji-Min;Chang, Cheon-Young
    • Animal Systematics, Evolution and Diversity
    • /
    • v.22 no.1
    • /
    • pp.109-115
    • /
    • 2006
  • Two marine gastrotrich species are reported from sublittoral sand bottom of Korea: Diplodasys ankeli Wilke, 1954 and D. meloriae Todaro, Balsamo and Tongiorgi, 1992. Both species are redescribed in detail, with the discussion on the intraspecific variability between Korean specimens and the original description or among Korean specimens. The genus Diplodasys is newly recorded from Korea as well as the Northwest Pacific.

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

  • Jae-Hong Choi;Young-Hyo Kim
    • Journal of Species Research
    • /
    • v.12 no.4
    • /
    • pp.294-298
    • /
    • 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.

Distributions of Organic Matter and Trace Metals in Surface Sediments around a Manila Clam Ruditapes phillippinarum Farming Area in Gomso Bay, Korea (곰소만 바지락(Ruditapes phillippinarum) 양식장 주변 퇴적물 내 유기물과 미량금속 분포특성)

  • Choi, Minkyu;Lee, In-Seok;Kim, Chung-Sook;Kim, Hyung-Chul;Hwang, Dong-Woon
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.48 no.4
    • /
    • pp.555-563
    • /
    • 2015
  • Organic matter and trace metals were investigated in surface sediments of Gomso Bay, where there is dense Manila clam Ruditapes philippinarum farming activity, to evaluate contamination of sediments in intertidal shellfish farming area. We measured mean grain size (Mz), chemical oxygen demand (COD), ignition loss (IL), acid volatile sulfide (AVS), total organic carbon (TOC), and total nitrogen (TN), and trace metals (As, Cd, Cr, Cu, Fe, Hg, Mn, Pb and Zn) in intertidal and sublittoral sediments. The intertidal sediments were mainly composed of coarser sediments (sand, silty sand, and sandy silt), with Mz values ranging from 2.61 to 4.79 Ø. Mz and the content of organic matter in sediments were lower in the intertidal zone than in the sublittoral zone. The mean metal concentrations in surface sediments decreased in the order Fe > Mn > Zn > Cr > Pb > Cu > As > Cd > Hg. The metal concentrations in surface sediments showed a significant positive correlation with Mz and organic matter content, indicating that metal concentrations in the surface sediments of Gomso Bay are controlled by Mz and organic matter. The concentrations of organic matter and trace metals in the study region were lower than or similar to those in other intertidal zones in western coast and much lower than those reported in other shellfish farming areas in Korea. Our results suggest that intertidal Manila clam farming sediments from Gomso Bay are not contaminated by organic matter and trace metals.

Two New Marine Tardigrades from Palawan Island, the Philippines

  • Chang, Cheon-Yeong;No, Hyeon-Su
    • Animal cells and systems
    • /
    • v.1 no.3
    • /
    • pp.419-423
    • /
    • 1997
  • Two new marine tardigrades, florarctus kwoni n. sp. and Batillipes philippinensis n. sp. belonging to Halechiniscidae and Batillipedidae, respectively, are described on the basis of the specimens sieved from sublittoral coral sands and shell gravels of Palawan Island, the Philippines. florarctus kwoni n. sp. is characterized by the rocket-shaped aliform expansion, with the distal margin of posterior ala flattened. Batillipes philippinensis n. sp. closely resembles B. similis Schulz, 1955 and B. annulatus De Zio, 1962. However, it is clearly discernible from the former by the shape of lateral body projection between leg III and leg IV, and the relative length of cirrus E and the spine on leg IV, and from the latter by the shape of the lateral body projection and the clavar shape. This is the first report of the marine tardigrades from the Philippines.

  • PDF

Pseudostomella Gastrotrichs (Macrodasyida, Thaumastodermatidae) from South Korea, with o Brief Review of the Genus

  • Lee, Ji-Min;Chang, Cheon-Young
    • Animal cells and systems
    • /
    • v.6 no.3
    • /
    • pp.207-213
    • /
    • 2002
  • Two new marine gastrotrichs of the genus Pseudostomella, P. longifurca and P. koreana, are described from the shallow sublittoral sand bottoms of South Korea. Pseudostomella longifurca n. sp. is characterized by the cuticular armature with tetrancres, five dorsal papillae on the prebuccal apparatus, four dorsolateral adhesive tubes, and elongated pedicle. Pseudostomella koreana n. sp. is distinguished from its congeners by the small body, tetrancres, two pairs of dorsolateral adhesive tubes, and tube-shaped copulatory organ. A brief review of the genus is prepared, with the character comparison table for all congeners currently recognized, and a revised key to the species of Pseudostomella. This is the first record of the genus Pseudostomella from East Asia.

Four New Records of Holaxonia (Anthozoa: Octocorallia: Alcyonacea) from Korea

  • Kim, Min-Sun;Song, Jun-Im
    • Animal Systematics, Evolution and Diversity
    • /
    • v.30 no.2
    • /
    • pp.95-102
    • /
    • 2014
  • The four species of the suborder Holaxonia, Anthogorgia japonica Studer, 1889 of family Acanthogorgiidae, Astrogorgia rubra (Thomson & Henderson, 1906), Euplexaura attenuata (Nutting, 1910), and E. erecta (Kukenthal, 1908) of family Plexauridae have been newly recorded in Korea. They were collected from intertidal and sublittoral zones in the western and southern coasts and Jeju-do Island of Korea by SCUBA diving and fishing nets from 1969 to 2010. This study approaches holaxonians by focusing on external and internal morphologies including size, form, and color of colonies, branches, polyps, coenenchyme, axis, and spicules. Anthogorgia japonica is characterized by its planar growth form, dichotomously branched form, non-retractile polyps, and Astrogorgia rubra by arrangement of calyxes being situated in lateral side at stems and alternately in all sides at branches. Euplexaura attenuata is sparsely and laterally branched colony, and has straight wand-like stems. Euplexaura erecta has branches which run parallel to the main stem.