• 제목/요약/키워드: sea stars

검색결과 14건 처리시간 0.019초

Two newly recorded sea stars of genus Henricia(Asteroidea: Spinulosida: Echinasteridae) from the East Sea, Korea

  • Michael Dadole Ubagan;Sook Shin
    • 환경생물
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    • 제41권4호
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    • pp.364-369
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    • 2023
  • Two newly recorded sea stars, Henricia densispina (Sladen, 1879) and H. reniossa asiatica Djakonov, 1958, collected from the East Sea of Korea using fishing nets, were described in this study. Morphologically, H. densispina is characterized by the shape (sub-triangular) similarity of the intermarginal plates to the superomarginal plates. Henricia reniossa asiatica Djakonov, 1958, has long and slender arms (R/r=7.2-9.1); clustered abactinal paxillae with 3-13 abactinal spinelets; a denuded abactinal skeleton made up of crescentic, elongated cross-shaped, the presence of small ossicles that divided the papular areas; and an adambulacral armature comprised of 14-17 spinelets. This study provides the first occurrence of H. densispina and H. reniossa asiatica in the Korean fauna and a detailed morphological description of these species' key characteristics is provided.

한국산 불가사리에 공생하는 요각류 2 종 (Two Species of Copepoda (Poecilostomatoida . Siphonostomatoida) assoicated with Asteroida in Korea)

  • 김일회
    • Animal Systematics, Evolution and Diversity
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    • 제8권1호
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    • pp.57-68
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    • 1992
  • 불가사리에 공생하는 요각류가 북태평양에서는 단 4종이 기록되어 있을 뿐이다. 공생성 요각류를 채집하기 위하여 한국산 불가사리를 조사한 결과 요각류 2종이 채집되었다. 이들은 Synstellicola 속에 속하는 1신종과 Scottomyzon gibberum으로서 이들을 기재 또는 재기재한다. S. gibberum은 북대서양에서만 발견되어지던 종으로서, 한국 해역에서는 여러가지 불가사리에 공생하고 있으며 한국내 분포범위가 넓은 것으로 밝혀졌다.

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A New Record of Stephanasterias albula (Asteroidea: Forcipulatida: Asteriidae) from the East Sea, Korea

  • Lee, Taek-Jun;Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • 제26권3호
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    • pp.345-347
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    • 2010
  • A sea star was collected with fishing nets at a depth of approximately 100-160 m in the East Sea and was identified as Stephanasterias albula (Stimpson, 1853) belonging to the family Asteriidae of the order Forcipulatida. This species characterized by having the capability of asexual reproduction by self-division turned out to be new to the Korean fauna. Its morphological characteristics are redescribed with illustrations. Thirty one species of sea stars including S. albula are now recorded from the East Sea of Korea.

A Newly Recorded Sea Star (Asteroidea: Forcipulatida: Asteriidae) from the East Sea, Korea

  • Lee, Taek-Jun;Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • 제27권2호
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    • pp.180-182
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    • 2011
  • Sea stars were collected with fishing nets between depths of 40-150 m from the Gangwon-do coastal region, East Sea. Specimens were identified as Evasterias echinosoma Fisher, 1926 belonging to the family Asteriidae, which is new to the Korean fauna. This species was characterized by strong external spines and a general size of more than 200 mm, thus the largest sea star identified in Korea to date. Its morphological characteristics are described here with photos. Thirty two asteroid species including E. echinosoma have been reported from the East Sea of Korea.

A New Record of Sea Star (Asteroidea: Phanerozonia) from Jejudo Island, Korea

  • Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • 제23권2호
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    • pp.251-253
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    • 2007
  • Some sea stars were collected from the coast of Seogwipo, Jejudo Island by using the fishing net at April 2003, and were identified on the basis of their morphological characteristics. Among them, Paragonaster ctenopes Sladen, 1889 belonging to family Goniasteridae, order Phanerozonia is newly recorded from Korea. Twenty two species of asteroids are reported to be distributed in the Jejudo Island of Korea.

New record of a sea star, Henricia perforata(Asteroidea: Spinulosida: Echinasteridae), in the East Sea, Korea

  • Ubagan, Michael Dadole;Shin, Sook
    • 환경생물
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    • 제38권3호
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    • pp.388-391
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    • 2020
  • Sea stars were collected from the adjacent waters of Jukbyeon and Jumunjin, Korea, using fishing nets at depths of 70-100 m. The specimens were identified as Henricia perforata (O.F. Müller, 1776) in the family Echinasteridae and order Spinulosida, with worldwide species distribution. H. perforata can be distinguished from some morphologically related Henricia species by its long, slender, and pointed adambulacral spines. The abactinal skeleton of H. perforata has wide papular areas resembling those of H. pachyderma, but the former has more papulae (two to seven). Previously, two genera of Echinasteridae, Aleutihenricia and Henricia, with a total of 12 echinasterid species, have been reported in Korea. The morphological characteristics of H. perforata are described and photographs are provided.

Two newly recorded species of genus Henricia (Asteroidea: Spinulosida: Echinasteridae) from the East Sea, Korea

  • Michael Dadole Ubagan;Jinho Lee;Taekjun Lee
    • 환경생물
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    • 제41권4호
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    • pp.550-556
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    • 2023
  • Henricia specimens were collected using a dual approach of trimix scuba diving and fishing nets. This inclusive collection encompasses the discovery of two species highlighted in this study and introduces and provides comprehensive descriptions for Henricia kinkasana and Henricia longispina aleutica. The descriptions offered in this study were derived from the thorough examinations of external morphological characteristics. The documentation provides detailed insight into key traits related to the abactinal and actinal skeletons and spines of these newly recorded species in Korea. This comprehensive examination contributes to our understanding of the distinct morphological characteristics defining each species within the genus Henricia.

Developmental Duration and Morphology of the Sea Star Asterias amurensis, in Tongyeong, Korea

  • Paik, Sang-Gyu;Park, Heung-Sik;Yi, Soon-Kil;Yun, Sung-Gyu
    • Ocean Science Journal
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    • 제40권3호
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    • pp.177-182
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    • 2005
  • The process of embryogenesis and larval development of the asteroid sea star Asterias amurensis $(U{\ddot{u}}tken)$ was observed, with special attention paid to morphological change and larval duration. In reproductive season, mature sea stars were collected under floating net cages, located in Tongyeong, southern Korea. The mature eggs are $138\;{\mu}m$ in average diameter, semi-translucent and orange in color, sperms in good condition appear light cream to white-gray in color. Embryos develop through the holoblastic equal cleavage stage and a wrinkled blastula stage that lasts about 9 hours after fertilization. Gastrulae bearing an expanded archenteron hatch from the fertilization envelope 22 hours after fertilization. At the end of gastrulation, rudiments of the left and right coelom are formed. By day 2, larvae possess complete alimentary canal and begin to feed. At this stage, the larva is called early bipinnaria. In 6-day-old larvae, the pre- and post- oral ciliated bands form complete circuits and the bipinnarial processes start to develop. By day 12, the lateral and anterior projection of the larval wall processes along the ciliated bands begins to thicken and curl, and the ciliated bands become more prominent. By day 32, early brachiolaria are presented with three pairs of brachiolar arms. Advanced brachiolaria with a well-developed brachiolar complex (three pairs of brachia and central adhesive disc) occur 6 weeks after fertilization. In the field, spawning of the sea star was observed in April to May, settlement form larvae and just settlements seem to occur from June to July, and early juveniles occur from August to September. Although we had not described the end of brachiolaria stage, it can be tentatively estimated that the duration of the pelagic stage of A. amurensis is 40 to 50 days.

A Study on the Hair style by Occupation - Focused on Korean Entertainers -

  • Sea, Yun-Kyeong;Kim, Seong-Nam
    • 패션비즈니스
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    • 제11권3호
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    • pp.124-132
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    • 2007
  • This study aims at inquiring into the image and characteristics of suitable hair style by occupation between movie actresses, TV talents, fashion models, singers and MCs who undergo the biggest influence on the management of international image and the inclination of appearance. For this, it made a survey of the image and characteristics on 177 women in their twenties to thirties living in Seoul city, providing photos of entertainers' six hair styles by image. The results of this study were as follows: First, it showed that movie stars or TV talents shone into one work of movie or TV become accustomed to natural, casual and romantic image. Second, it showed that singers or fashion models become accustomed to ethnic and unique style, as they follow an occupation that adjusts to their concept to show their clothes.