http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Anodonta arcaeformis와 Cristaria plicata 유생의 미세구조적 연구
박갑만 關東大學校 醫科大學 醫科學硏究所 2002 關東醫大學術誌 Vol.6 No.1
Two species of freshwater mussels in Korean, Anodonta araceformis and Cristaria plicata, were compared in regard to the vaious texononmical characteristics of glochildian. The out-demibranchs of all females of species have served as marsupial pouch. The breeding season of these two species was the winter breeder. The glochidia of A. arcaeformis and C. plicata were separated one by with the mucous strings. The shape of the glochidium of A. arcaeformis and C. plicata is apparently sub-triangular and is average size is 250 μm in 240 μ in height and 230×310 μm, respectively. Two glochidial shell valves are of same size, kept together by ligament of 235 μm and 220 μm in width. Each of the glochidial shell valves has studded with many spines on the superior face. a large area at the apex of the valve surrounding the base of the hook is provided with numerous small spines which become progressively smaller towards the periphery of the area. A larval thread of A. arcaeformis and C. plicata, without any accessory structure and 2.6 μm and 2.4 μm in diameter, emerges from a canal located at center of ventral plate of the mantle. The results indicated that the glochidial morphology be reveal characters useful for the classification of different species and for the interrelations between genera.
권오길,박갑만,이준상,송호복 江原大學校 附設 環境硏究所 1991 環境硏究 Vol.8 No.-
This study was carried out to determine the attachment parts and rates on the host fish and the successive stages of the glochidial encystment. A scanning electron microscope observation of the glochidia, the larvae of freshwater brivalve, Anodonta arcaeformis flavotincta, on the host fish, Carassius auratus, was conducted. The attachment rates on the host fish were 30.1%, 22.3% on the pectoral, the caudal, and the pelvic and anal fin, respectively. Glochidia, once attached to the host, have become encysted within 27 hours. The glochidia in fish tissues have sloughed between 13 days and 15 days when the water temperature was 16℃ in laboratory. During encystment, the epithelial cells of the host fish migrated actively toward the attached glochidia and covered them. In the encystment process, the encysted tissues in the host have become loose in seven days and exposured a pat of the glochidium in eight days after infection. No changes of the glochidial size have found before attachment and after sloughing.
Park, Gab-Man,Chung, Ee-Yung,Hur, Sung-Bum 한국유전학회 2002 Genes & Genomics Vol.24 No.1
Geographical isolates of the shortnecked clam Ruditapes philippinarum in Korea were examined at the molecular level for genetic divergence. Sequences from both nuclear and mitochondrial genomes were selected as markers of evolutionary divergence. Sequence analysis of the second internal transcribed spacer region (ITS2) within the rDNA repeat and the mitochondrial cytochrome c oxidase I (mtCOI) gene were performed. Very slight variation of intra-species in R. philippinarum was detected from the mtCOI sequence (2 bp) and ITS2 sequence (4 bp). The mtCOI and ITS2 also exhibited no intra-individual variation from color patterns. The three populations of R. philippinarum employed in this study showed very slight variation in the nucleotide sequences of the mtCOI and ITS2 genes. Phylogenetic analysis of mtCOI sequence data confirmed R. philippinarum to be a member of the Veneroida.
Karyotypes of Korean Endemic Land Snail, Koreanohadra koreana (Gastropoda: Bradybaenidae)
Park, Gab-Man The Malacological Society of Korea 2011 The Korean Journal of Malacology Vol.27 No.2
The karyotypes of Korean endemic land snail, Koreanohadra koreana, using air-drying method wereinvestigated. Somatic cells of this species had 2n = 58. Karyotypes were also analysed with 16 metacentric, 12 submetacentric and one subtelocentric chromosome pairs. Observed chromosomes ranged from 2.6 to $8.9{\mu}m$ and the total length was $122.3{\mu}m$. This is the second report on the chromosome numbers and the karyotype of K. koreana.
Park, Gab-Man,Kim, Yeon-Ho,Kim, Eun-Jong,Choi, Ki-Ho The Malacological Society of Korea 2006 The Korean Journal of Malacology Vol.22 No.1
The gonadosomatic index (GSI), oogenesis and reproductive cycle in female Neptunea (Barbitonia) afhritica cumingii were investigated by light and electron microscope observations. In the early vitellogenic oocyte, the Golgi complex and mitochondria were involved in the formation of glycogen, lipid droplets and yolk granules. Late in the vitellogenic oocytes, the rough endoplasmic reticulum and multivesicular bodies were involved in the formation of proteid yolk granules in cytoplasm. In particular, compared with the results of other gastropods, it showed a different result that appearances of cortical granules at the cortical layer and microvilli on the vitelline envelope, which is associated with heterosynthetic vitellogenesis, were not observed in vitellogenic oocytes during oogenesis. A mature yolk granule was composed of three components: main body (central core), superficial layer, and the limiting membrane. Monthly changes in the gonadosomatic index in females studied in 2004 and 2005 were closely associated with ovarian developmental phases. Spawning occurred between May and August in 2004 and 2005 and the main spawning occurred between June and July when the seawater temperature rose to approximately $18-23^{\circ}C$. The female reproductive cycle can be classified into five successive stages: early active stage (September to October), late active stage (November to February), ripe stage (February to June), partially spawned stage (May to August), and recovery stage (June to August).
Limnoperna coreana n. sp.(Bivalvia: Mytiloidea: Mytilidae) from Baengnyong Cave, Gangweon-do, Korea
Park, Gab-Man,Choi, Yong-Gun The Malacological Society of Korea 2008 The Korean Journal of Malacology Vol.24 No.2
A new species of the mytiloidean freshwater bivalve is described from Baengnyong Cave, Pyeongchang-gun, Gangweon-do. Limnoperna coreana n. sp. belongs to the genus Limnoperna Rochebrune, 1882 with the byssus. This species has a small shell with the glossy surface and rounded-triangular and differs morphologically from all of its congeners.
Gab-Man Park,Oh-Kil Kwon 江原大學校 附設 環境硏究所 1992 環境硏究 Vol.9 No.-
Chromosome numbers are reported for 11 species 5 families of Korean freshwater Gastropoda snails. A cytotexanomic study was observed during spermatogenesis, as well as during cogenesis and mitovic divisions. The chromosome preparations were made on gonad by the usual air-drying method of Kligerman and Bloom(1997) slightly modified by the present author. The results obtained in the present study are summaried as follows: In Viviparidae, C. chinensis malleata chromosome numbers of 18(2n) was counted. The chromosome complement of C. chinensis malleata consists of two pairs of metacentric and seven pairs of submetacentric chromosomes. In Bithyniidae. P. manchuricus chromosome numbers of 34(2n) was counted and the mototic chromosome complement showed three pairs of meta-, ten pairs of submata- and four pairs of telocentric chromosomes. In Pleurocaridae, chromosome numbers of six species containing genus Semisulcospira were counted 18 pairs, The mitotic chromosome complement of S.livertina consists of nine pairs of meta-, eight pairs of submeta- and one pair of telocentric. six pairs of meta-, eleven pairs of submeta- and one pair of telocentric in S. gottschei, nine pairs of meta- and nine pairs of submeta-chromosomes in S. forticosta and S. tegulata, seven pairs of meta-, ten pairs of submeta- and one pair of telocentric chromosomes in S. coreana, eight pairs of meta-, six pairs of sumeta- and four pairs of telocentric chromosomes in S, sp. In Lymnaeidea, 17 pairs of chromosomes were observed in R. auricularia coreana and 16 pairs in A. ollula. The chromosome complement of R. auricularia coreana consists of five pairs of meta- and twelve pairs of submetacentric chromosomes. The chromosome complement of A. olluia consists of five pairs of meta-, nine pairs of summeta- and two pairs of telocentric chromosomes. In Planorbidae, chromosome numbers of II. cantori was 36(2n) counted. The chromosome complement of II. cantori consists of fourteen pairs of meta- and four pairs of submetacentric chromosomes.