• Journal of Species Research
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• v.10 no.3
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• pp.276-286
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• 2021

We performed a taxonomic study on Korean Pacificincolidae (Bryozoa: Cheilostomata) with the materials collected from 39 localities(ports, intertidal and subtidal zones) in the coastal seas of South Korea from 1981 to 2020. Korean Mucronella perforata reported by Rho and Seo (1985) turned out to be not Pacificincola perforata, but Primavelans glabricollaris n. sp. based on morphological data. Pacificincola perforata, which was transferred from Mucronella perforata (Okada and Mawatari, 1937), is also added to the Korean fauna. This study is the first to use mitochondrial 16S rRNA gene sequences to study the family Paficincolidae. The NJ analysis also reconfirmed the validity of the genus Primavelans, established on the basis of the early astogeny by De Blauwe in 2006, with the mitochondrial 16S rRNA sequences. The inter-genetic distance among two species belong to the Pacificincolidae was in the range of 13.39±1.83 mm. Primavelans glabricollaris n. sp. is thus distinguished from Pacificincola perforata with both morphological and molecular data. A new species, Primavelans glabricollaris, and a new record, Pacificincola perforata from Korea are herein described in detail and illustrated by scanning electron microscopy.

• Animal Systematics, Evolution and Diversity
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• v.15 no.2
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• pp.221-229
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• 1999

Watersipora subovoidea (d'Orbigny, 1852) from Korea is synonymous with Watersipora subtorquata (d'Orbigny, 1842), which shows a wide range of variation in the width of zooecium and orifice. Watersipora platypora n. sp. which was previously known as Dakaria bidentata and Watersipora arcuata in Korea is reported to be new species.

• Journal of Species Research
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• v.6 no.spc
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• pp.125-128
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• 2017

Three species in the genus Aetea (Bryozoa: Cheilostomata: Aeteidae) are described: Aetea anguina (Linnaeus, 1758), A. ligulata Busk, 1852, and A. truncata (Landsborough, 1852). Aetea ligulata Busk, 1852 and A. truncata (Landsborough, 1852) are new records of Korean bryozoan fauna. Four of the 17 species in the genus Aetea Lamouroux, 1812 are cosmopolitan or widespread. Three of these species (Aetea sica (Couch, 1844) was not observed) are reported in this study.

• Journal of Species Research
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• v.6 no.3
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• pp.232-236
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• 2017

The first occurrence of the genus Hornera (Bryozoa, Cyclostomata) is reported from waters around Jeju Island, Korean Peninsula. Hornera jeongsangi n. sp. differs from all known species of the genus Hornera in having very prominent spiny protrusions around the autozooidal apertures, which are not arranged in fascicles, the gonozooidal ooeciopore facing frontally and nonporous zooidal walls around the ooeciopore.

• Animal Systematics, Evolution and Diversity
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• v.40 no.1
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• pp.35-41
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• 2024

Two species belonging to the genus Gregarinidra Barroso, 1949 (Bryozoa: Gymnolaemata: Flustridae) were first found in this study from Korean waters. Gregarinidra furcula n. sp. is new to science, and G. incrustans (Silén, 1941) is newly added to the Korean fauna. Species belonging to this genus are primarily distinguished by two characteristics: interzooidal avicularia and marginal spines. The pitchforked spines clearly distinguish G. furcula n. sp. from the other Gregarinidra species, and G. incrustans shows the difference by having blunt spines and short-triangular avicularia. Gregarinidra incrustans was known to be distributed only in Japan until this species was reported from the South Sea, Korea, in the present study. This study provides descriptions of two species with detailed illustrations by scanning electron microscopy, distributional data, and a taxonomic key to the Korean Gregarinidra species. With the addition of two species reported herein, four Korean Gregarinidra are recorded: G. corbula Seo, 1996, G. furcula new species, G. incrustans(Silén, 1941), and G. serrata (MacGillivray, 1869). Finally, Gregarinidra totals 10 species worldwide.

• Animal Systematics, Evolution and Diversity
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• v.40 no.1
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• pp.73-78
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• 2024

A taxonomic study of the family Electridae Stach, 1937 (Bryozoa: Cheilostomatida) was carried out using materials collected from six localities of Korea from 1984 to 2021. Aspidelectra melolontha (Landsborough, 1852) is newly added to the bryozoan fauna of Korea, and Electra jindoica n. sp. is new to science. European A. melolontha is known to occur in brackish water of low salinity, but the species is found in New Zealand and Argentina seawater. This species is also reported as a fouling bryozoan from China and New Zealand. Electra jindoica n. sp. is distinguished by smaller zooid, larger kenozooid, and developed cryptocyst from E. asiatica Grischenko, Dick and Mawatari, 2007. With the addition of two species reported herein, six species and four genera of Electridae from Korea have been recorded: Aspidelectra melolontha, Arbopercula tenella, Conopeum hexagonum, C. reticulum, C. seurati, and Electra jindoica n. sp. Furthermore, the genera Aspidelectra and Electra are new to the Korean bryozoan fauna based on this study.

• Animal Systematics, Evolution and Diversity
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• v.40 no.1
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• pp.42-46
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• 2024

Two species from the genus Escharoides Milne Edwards, 1836, E. biseriatata and E. buffonellarioides n. sp. Were first found in Korean waters in this study. Their colonies were collected from two locations in the South Sea, Korea: Tongyeong Marine Ranch in 2004 and Daebyeon Port in 2009. Escharoides biseriatata shows a difference in the position of avicularia from the Chinese specimens. While avicularia are lateral to the orifice in Chinese specimens, the ones in Korean specimens seem to be located more latero-proximally. Since Escharoides biseriatata was reported as fouling bryozoans in China in 2001, this species first occurred at Daebyeon Port in Korea in this study. Escharoides buffonellarioides n. sp. is similar to E. adeonelloides in morphological features of zooids but is clearly distinguished by having the erect colonial form of small masses. With the addition of two species reported herein, four Korean Escharoides are recorded: E. biseriatata, E. buffonellarioides, E. excavata, and E. sauroglossa.

• Journal of Species Research
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• v.9 no.3
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• pp.280-287
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• 2020

In the family Crisiidae (Bryozoa: Cyclostomata), 90 species have been recognized worldwide in seven genera: Bicrisia d'Orbigny, 1853, Crisia Lamouroux, 1812, Crisidia Milne Edwards, 1838, Crisiella Borg, 1924, Crisiona Canu & Bassler, 1928, Filicrisia d'Orbigny, 1853 and Unicrisia d'Orbigny, 1853. Four species in Crisiidae are described from 11 localities from 2008 to 2014, resulting in two new distributional records and two new species in Korea. The new additions to the fauna are: Crisia cuneata Maplestone, 1905, C. elongata Milne Edwards, 1838, C. jejuensis n. sp. and Filicrisia cygnus n. sp. A total of seven Korean crisiids with the addition of four species reported herein are recorded and distributed in three genera: Bicrisia, Crisia and Filicrisia. Accordingly, the Korean cyclostomatous bryozoans come to be 12 species, in eight genera, and five families. All of Korean Crisia eburneodenticulata specimens needed to be reexamined, thus this species is tentatively deleted from the Korean bryozoan fauna.

• Animal Systematics, Evolution and Diversity
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• v.39 no.1
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• pp.27-33
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• 2023

The specimens collected from five localities during the period from 2004 to 2022 were observed. As a result of this study, Jellyella eburnea was found to be new to the Korean fauna and three membraniporids were reviewed. Two species, Jellyella eburnea and Biflustra grandicella, were redescribed and illustrated with the collected specimens in this study. Membranipora perfragilis from Korea is changed into Biflustra grandicella. Jellyella eburnea is new to the Korean fauna and first reported outside subtropical and tropical seas of the South Pacific and Indo-Pacific Ocean. This fact proves that the seas in Korea are warming. Additionally, Biflustra crenulata reported from the West Sea, South Sea and Jejudo waters of Korea is synonymized into Biflustra okadai. Membranipora irregulata is transferred into the genus Biflustra. Five of Korean membraniporids, Biflustra grandicella, Biflustra irregulata, Biflustra okadai, Jellyella eburnea, and Jellyella tuberculata, are reported in the Korean fauna as a result of this study. The photos taken in the field and by Scanning Electron Microscopy of two species, Biflustra grandicella and Jellyella eburnea, are provided herein.

• Journal of Microbiology
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• v.38 no.4
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• pp.224-229
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• 2000

Chitin-degrading marine bacterial strain 98CJ11027 was isolated from bryozoa from the coastal area of Cheju Island, Korea, and identified as a member of the genus Vibrio. The molecular mass of the main extracellular chitinase (chitinase I), purified from strain 98CJ11027, was estimated to be 98 kDa. The optimal condition for chitinase I activity is pH 6.0 and 45$^{\circ}C$. The activity was inhibited by Fe$\^$+2/ and Cu$\^$+2/. Chitinase I displayed the hydrolysis type of chitobiosidase and catalyzed reversed hydrolysis leading to the synthesis of tetraacetylchitotetraose.