• Animal Systematics, Evolution and Diversity
• /
• v.2 no.2
• /
• pp.59-66
• /
• 1986

1971년과 1978년에 제주도의 서귀포 앞 , 수심 50-60m 인곳에서 채집된 거미불가사리류를 동정한 결과, 폐사미 목, 침거미불가사리 과에 속하는 1 신종으로 확인되어 Ophiacantha linea, 선침거미불가사리로 명명하여 기재한다. 본종은 복완판과 측완판의 복면에 줄무늬가 있는 것이 특징이다.

• Development and Reproduction
• /
• v.10 no.1
• /
• pp.33-39
• /
• 2006

Gonadal development and reproductive cycle of the North Pacific seastar, Asterias amurensis captured from the Gosung, Gyeongsangnamdo, between November 2003 and February 2005, was investigated monthly changes of gonadosomatic index(GSI), gonadal development and oocyte size-frequency distribution. Monthly changes of GSI values showed similar trends in female and male. GSI values were reached the maximum in March($3.88{\pm}3.04$ in female, $0.87{\pm}0.57$ in male), and then gradually decreased. Based on the monthly changes of GSI, histological observation of gonadal development, reproductive cycle was divided into following successive stage: growing stage(October to January), mature stage(February to March), spent stage(March to April), degeneration and resorption stage(April to May), recovery stage(July to September). based on these result, this species seemed to have a synchronous oocyte development and one spawning season a year.

• Journal of the Korean Society of Fisheries and Ocean Technology
• /
• v.50 no.4
• /
• pp.530-541
• /
• 2014

The dredge gear is dragged along the bottom of the sea to catch targeted edible bottom dwelling species. Species composition and ecological index of the catches of dredge were estimated around Gangneung coastal fishing ground by dredge with different mesh size and tooth space from July to December 2013. Eight different types of dredge including four different tooth space (24.7 mm, 29.9 mm, 34.9 mm, 40.1 mm) and four different mesh size(15.5 mm, 32.7 mm, 51.1 mm, 60.0 mm) were used in the experiment. During the experiment, total catches were collected 31 species as sipunculida 1 species, mollusca 13 species, annelida 3 species, arthropoda 8 species, echinodermata 4 species and others 2 species. The dominant genus were mollusca and echinodermata while the dominant species were Megangulus venulosus, Pseudocardium sachalinensis, Schaphechinus brevis. The richness index was ranged 1.29-1.72, evenness index was 0.6-0.65 and diversity index was 1.65-1.83 according to the tooth space and mesh size of dredge. Richness index, diversity index were high at tooth space 34.9 mm dredge and ecological index showed decreasing tendency with the increasing of mesh size of dredge. Cluster and MDS analysis, based on a Bray-Curtis and similarity matrix of fourth root transformed data of number of species and wet weight, showed division into four different groups as four different tooth space (Group A), four different mesh size Group B (51.1 mm, 60.0 mm), Group C (32.7 mm) and Group D (15.5 mm).

• Animal Systematics, Evolution and Diversity
• /
• v.29 no.1
• /
• pp.1-17
• /
• 2013

Micronesia is an island nation located north of Papua New Guinea in the Pacific Ocean. A survey was executed on Kosrae, which is one of the four main islands of Micronesia, during January 23-30, 2011 and January 8-15, 2012. The echinoderms were collected at eight intertidal areas and at 12 SCUBA diving points at depths of 10-50 m in the subtidal zone. They were identified based on morphological characteristics. In total, 50 species from 276 individuals were identified: three crinoids, 11 asteroids, seven ophiuroids, 10 echinoids, and 19 holothuroids. Among them, two crinoids, five asteroids, three ophiuroids, four echinoids and two holothuroids were newly recorded from Kosrae.

• Animal Systematics, Evolution and Diversity
• /
• v.18 no.2
• /
• pp.245-252
• /
• 2002

Some crinoids collected by scuba divers from Jeju Island, Geomundo Island and Yokjido Island were identified. Of which two species, Oligometra chinensis A. H. Clark, 1918 belonging to the family Colobometridae and Neometra multicolor (A. H. Clark, 1907) belonging to the family Calometridae, order Comantulida, turned out to be new to the Korean fauna. The Calometridae was reported in Korea for the first time.

• Animal Systematics, Evolution and Diversity
• /
• v.30 no.2
• /
• pp.108-118
• /
• 2014

Micronesia is an island nation located north of Papua New Guinea in the Pacific Ocean. A survey was conducted on Chuuk, which is one of the four main islands of Micronesia, from 11-25 Nov 2012. Echinoderms collected at one intertidal area as well as at 16 SCUBA diving points of 10-40 m depths in the subtidal zone were identified based on morphological characteristics. In total, 35 species from 165 individuals were identified: two crinoids, eight asteroids, four ophiuroids, seven echinoids, and 14 holothuroids. Among them, one asteroid, one ophiuroid, one echinoid, and two holothuroids were newly recorded from Micronesia.

• Animal Systematics, Evolution and Diversity
• /
• v.16 no.1
• /
• pp.23-30
• /
• 2000

Some asteroids were collected at a depth of 30 m in Chejudo Island. Of which two species were identified as Luidia maculata Muller et Troschel, 1842 and Linckia laevigata Linne, 1758. These species are turned out to be new to the Korean fauna and redescribed on the morphological characteristics with illustrations. Eighteen species of asteroids are reported to be distributed in the Chejudo Island of Korea.

• Animal Systematics, Evolution and Diversity
• /
• v.17 no.2
• /
• pp.251-262
• /
• 2001

The crinoids collected at the subtidal zone in Geomundo Island were identified. Four species belonging to the family Comasteridae, order Comantulida turned out to be new to the Korean fauna. They are Comantheria intermedia, Comanthus japonicus, C. solaster and C. parvicirrus which are redescribed on the morphological characteristic with illustrations. The class Crinoidea is new to Korean fauna.

• Animal Systematics, Evolution and Diversity
• /
• v.9 no.2
• /
• pp.123-149
• /
• 1993

The present study is to examine the taxonomy and distribution of holothurians (especially Subclass Dendrochirotacea) as a part of study on marine invertevrate of Korea. The materials were collected at 10 localities in the coastal seas and islands of Korea from April, 1971 to September, 1992. As a result, 16 dendrochirotida species belonging to 13 genera, 4 families were identified, of which 11 species have not been recorded in Korean fauna before.

• Journal of Species Research
• /
• v.9 no.3
• /
• pp.273-279
• /
• 2020

We describe a newly recorded brittle star to South Korea, Amphiura (Amphiura) digitula (H.L. Clark, 1911), that was collected from Geoje Island, at a depth of 47 m. The species is characterized by a small disk, covered by numerous fine scales, small radial shields that are wider than long, a small stumpy hook at the distal end of the radial shield, two tooth papilla, two adoral shield spines, 2nd adoral shield spine longer than other, tapered dramatically toward dull tip, five arms with four proximal arm spines, and two tentacle scales. We also obtained a 657 bp sequence from COI gene and the amplified sequence matched the general DNA barcoding region. The NJ and ML phylogenetic analyses revealed A. (A.) digitula as monophyletic in the Amphiura clade. This species is clearly distinguished from other Amphiura species by morphological characteristics and the mitochondrial COI sequence, and thus represents the sixth Amphiura species reported to occur in Korea.