• Journal of Fisheries and Marine Sciences Education
• /
• v.24 no.6
• /
• pp.781-792
• /
• 2012

Seasonal variation of species composition in marine organisms around Oryukdo of Busan was investigated using a gill net between 2009 and 2011. A total of 82 species, 52 families, and 6 taxa were collected during the sampling periods. Species were included two species in Cnidaria, one in Urochordata, 12 in Mollusca, 12 in Crustacea, seven in Echinodermata, and 48 in Pisces. The dominant species were Crepidula onyx, Asterina pectinifera, Ceratostoma burnetti, Asterias amurensis, Anthocidaris crassispina, and Trachurus japonicus. These six species accounted for 48.4% in the total number. Diversity indices were highest in spring 2009 (2.77) and lowest in spring 2011 (1.66). Seasonal variation of species composition and abundance in marine organisms corresponded with the water temperature.

• Korean Journal of Environment and Ecology
• /
• v.29 no.2
• /
• pp.221-227
• /
• 2015

This study was carried out to measure seasonal changes in the community structure and species composition of marobenthos in the intertidal area of Dokdo. The macrobenthos identified during this study was comprised of 36 species: predominately 25 species of mollusks(69.4 %), 6 species of arthropods(16.7 %), 3 species of echinodermata(8.3 %) and 1 species of cnidaria (5.6 %). The number of marobenthos species ranged from 27 in Spring to 33 in Autumn. In terms of the top 10 dominant species, there were 7 species of mollusks and 3 species of arthropods in the this study. After analyzing the bray-curtis similarity, it was divided into two large groups(A, B). Such group classification matched the SIMPROF(Similarity Profile Analysis) and the one-way ANOSIM(Analysis of similarities) analysis.

• Animal Systematics, Evolution and Diversity
• /
• v.11 no.3
• /
• pp.343-358
• /
• 1995

To clarify the taxonomy and the distribution on subclass Aspidochirotacea and Apodacea, the authors examined the materials which were collected from 48 localities during the period from 1962 to 1995 . As a result, the specimens of holothurians are classified into 3 orders, 5 families and 8 specie. Among them , the following 4 species are found to be new to the Korean fauna : Molpaida oolitica, Paracaudina chilensis, Acaudina molpadioides and Caudina similis.

• Animal Systematics, Evolution and Diversity
• /
• v.18 no.1
• /
• pp.157-163
• /
• 2002

Some cirnoids collected by scuba divers from Jeju Island are identified. Of which two species, Cyllometra manca(Carpenter, 1888) and Decametra tigrina (A. H. Clark,1907) belonging to the family colobometridae and order Comantulida, turned out to be new to the Korean fauna. The Colobometridae is reported in Korea for the first time.

• Animal Systematics, Evolution and Diversity
• /
• v.14 no.3
• /
• pp.193-205
• /
• 1998

The echinoderms collected from 20 localities of Geojedo Island and its adjacent sea waters during the period from February 1995 to May 1998 turned out to be 47 species in 37 genus, 25 familes, 11 orders, three classes. Of which one echinoid species, Prionocidaris baculosa (Lamarck, 1816) is newly added to the Korean fauna of Geojedo Island with 25 previously known species and total 47 species are described in this report.

• Animal Systematics, Evolution and Diversity
• /
• v.19 no.1
• /
• pp.103-109
• /
• 2003

Presynaptiphilus poraminutus is described as a new species in association with the ophiuroid Ampioplus ancistrotus (H. L. Clark) collected from an intertidal sand beach in the Yellow Sea. The new species is closely related to P. minutus in having the identical leg structure, but may be differentiated from the latter by the larger body, the longer genital double-somite and caudal rami, and the shorter pre-anal semite.

• Animal Systematics, Evolution and Diversity
• /
• v.19 no.1
• /
• pp.125-131
• /
• 2003

Taxonomic study for the comatulid crinoids collected from the Korea Strait and Jeju Island was conducted. Two species of comatulids, Captoptometra rubroflava belongs to the family Zygometridae and Gephyrometra versicolor belongs to the family Calometridae, were identified and both of them were turned out to be new to the Korean fauna. The family Zygometridae is newly reported in Korea.

• Animal Systematics, Evolution and Diversity
• /
• v.16 no.2
• /
• pp.219-226
• /
• 2000

Some echinoids were collected at about 20m depth of the sea in Moseulpo of Jejudo Island. Among them two species, Diadema setosum (Leske, 1778) and Toxopneu-stes pileolus(Lamarck, 18716), turned out to be new to the Korean fauna. They were redescribed on the morphological characteristics with illustrations. The order Diadematoida is new to Korea. Fourteen echinoids species so far have been report-ed from the sea around Jejudo Island in Korea.

• Animal Systematics, Evolution and Diversity
• /
• v.36 no.3
• /
• pp.264-267
• /
• 2020

Thaumatometra tenuis (A. H. Clark, 1907), an unstalked crinoid that lives on the muddy bottoms of the deep sea, is re-described with images in this study. This species distributes in the cold water zone of the northwestern Pacific and had been reported at the end of 1800s from South Korea but had not been found thereafter. So we thought that this species was no longer living in Korea. In March 2019, a large number of T. tenuis were found near the Sokcho-si, Gangwon-do, Korea. So the presence of T. tenuis in Korea is reconfirmed. This species, markedly fragile overall, is characterized by long segments of cirri and pinnules, and P₁ composed of 35 segments.

• Animal Systematics, Evolution and Diversity
• /
• v.35 no.2
• /
• pp.84-90
• /
• 2019

The brittle star, Amphistigma minuta H.L. Clark, 1938, was collected from Munseom Island, Jeju-do, Korea, by SCUBA diving. This species has distinct morphological features, as follows: a small disk with large papillae on the disk margin; slender arms and four arm spines at proximal; and oral parts the same as those of the genus Amphipholis. Additionally, we obtained partial sequences of the cytochrome c oxidase subunit I gene (COI) (513 bp) and compared them with sequences from Australian A. minuta and 13 other species of Amphiuridae. As a result, intraspecific pairwise distance was 0.4% between two Korean individuals and intraspecific distance between the Australian and the Korean populations was 2.6-2.8%, which indicates they should be considered as the same species. Ultimately, 15 species of the family Amphiuridae have currently been recorded in Korea, including A. minuta.