Lanceolaria acrorhyncha의 生活史에 關한 硏究 : 姙卵期와 幼生附着에 관하여 On the breeding season and glochidia infection

崔信錫,鄭惠珠 충남대학교 자연과학연구소 1982 忠南科學硏究誌 Vol.9 No.1

The life cycles of the fresh water bivalve, Lanceolaria acrorhyncha, was treated in this thesis. We have investigated the phenomena such as the maturation of the gonads, breeding season, early development of the eggs, glochidia infection of fish, etc. The samples were collected from the tributaries of the Geum River during the period from February in 1980 through September in 1981, and the experimental observation was carried out under the natural conditions. The main results of present study may be summarized as: 1. The breeding seasons of Lanceolaria acrorhyncha, judged from gonad maturation, occurred twice annually, i.e. during the period of middle March-late April and middle July-middle August. The marsupium infection of certain species of fish is believed to occur during the May-June period with relatively higher rate in June. 2. The glochidia infection of certain species of fish is believed to occur during the May-June period with relatively higher rate in June. 3. The fresh water fish to be infected by the glochidia were the five species of Pungtungia herzi, Acheilognathus intermedia, Pseudogobio esocinus, Zacco platypus and Pseudobagrus emarginatus, among which the Zacco platypus showed the highest infection rate of 3.7%. 4. For most species of the infected fish, the pectoral fin showed a relatively higher rate of infection compared with other parts of the body.

금강산 감돌고기 ( Pseudotungianigra M. ) 의 난 발생에 관하여

최신석,홍영표,안광국,김재구 한국하천호수학회 1989 생태와 환경 Vol.22 No.4

금강과 삽교천의 담수어 군집에 관한 연구

최신석,안광국 한국하천호수학회 1988 생태와 환경 Vol.21 No.3

Limnoperna fortunei 의 개체군 분석에 관한 연구

최신석,김정섭 한국하천호수학회 1985 생태와 환경 Vol.18 No.1·2

Limnoperna fortunei 의 난 발생 및 유생의 성장에 관한 연구

최신석,김정섭 한국하천호수학회 1985 생태와 환경 Vol.18 No.1·2

錦江 淡水二枚貝의 棲息地 土性에 關한 硏究

崔信錫,辛昌男 충남대학교 자연과학연구소 1981 忠南科學硏究誌 Vol.8 No.1

The attempt to investigate the relationship between the soil texture of habitat and fresh-water clam was conducted from March to November 1980 in eight stations of Geum River. 1. Unio douglusial, Inversidens reiniana and corbicula Huminea were mainly distributed in the mid-down stream and Anodonta woodiano fukudai, Lanceolaria acrorhyncha and Lamprotula gottschei in the upstream, but Solenaia triangulanis was overall found in abundance. 2. The soil types of fresh-water clam nabitat were divided into three types by analyzing the soil texture; sand (st 1,2,7,8), loamy sand(st 3,4) and sandy loam(st 5,6). 3. The correlation analysis of soil texture and fresh-water clams was significant in Anodonta woodiana fukudai, Inversidens reiniana and corbicula fluminea, but 4 species were not.

중석광산지역의 (重石鑛山地域) 수질과 (水質) plankton 상에 관한 연구

최신석,신창남 ( Shin Sok Choi,Chang Nam Shin ) 한국하천호수학회 1976 생태와 환경 Vol.9 No.1·2

Chemical conditions and plankton fauna in the polluted and clear waters were comparatively investigated at the upper stream of the south Han-river situated in Yung-wol, Kangwon-Do during the period of August 1 and August 30, 1969. The results obtained are as follows: 1. Water temperature, pH, NH₃,-N, NO₂-N, NO₃,-N, PO₄^(---), Cl^- was found to be similar both in the polluted and clear waters. And the contents of dissolved oxygen in both waters were statistically very significant. 2. In the polluted water 11 species were appeared especially two species among them were clearly dominant: Cymbella tumida and Filinia longiseta. The frequent appearance of the two species was statistically very significant. 3. In the clear water were found various plankton ranging from 25 to 28 species, especially Gyrosigma accuminata and Ceratium hirundinella were dominant. The frequent appearance of these two species was statistically less significant. Plankton at the confluence of the waters were similar to those in the clear water. 4. Plankton fauna in the polluted and clear waters was affected by the dissolved oxygen called limiting factor which had resulted from the polluted water of tungsten mine.

海水汚染 指標種으로서의 Heminerita japonica에 關하여

崔信錫,辛昌男,吳炅煥 충남대학교 자연과학연구소 1980 學術硏究誌 Vol.7 No.2

Gastropoda communities were examined to determine the indicators as sea-water pollution in the tidal zone of Inchon and Yongyoudo. Among the factors of sea-water qualities, BOD was 22.42±8.77 ppm and showed higher values than the limiting values of pollution, 5-10 ppm in Inchon Individual number of Heminerita japonica was negatively correlated to the values of BOD.

미천산 (美川産) 담수어의 미세분포상에 관하여

崔信錫,金泳鎬 충남대학교 자연과학연구소 1981 忠南科學硏究誌 Vol.8 No.1

The microdistribution pattern of fresh-water fishes in the Mi stream was studied from May 8 to July 18 in 1977. 1. Total 32 species were identified, including 9 species known to live at survey area. 2. The common species were Zacco temmincki, Coreoper ca herzi, Puntungia herzi, Acheilognathus signifer, Gnathopogon majinae at station 1. Gnathopogon majimae, Zacco tennincki, Z. platypus at station 2, Pungtungia herzi, Acheilognathus signifer, Coreoperca herzi, Zacco temmincki at station 3, Coreoperca herzi, Zacco temmincki, Z.platypus at stations4. 3. Acheilognathus signifer, Carassius auratus, Cobitis rotundicaudata, C. taenia were recognized to inhabit mainly in the pool. Zacco platypus, Z.temmincki, Coreoleuciscus spendidus, Mmogurnda obscura and Liobagrus mediadiposalis were recongnized to in habit mainly in the rapid. 4. The species diversity of the studied stations were comparatively high (Mean = 2.9285), and the equitability was high, too(Mean = 0.6970). The species diversity of the pool and rapid did not show the significant difference(P>0.05), and the eauitability of them did not eithed(P>0.05).

대합(Meretrix lusoria) 과 가무락(Cyclina sinensis) 의 초기발생 및 성장에 관한 비교연구

최신석 한국수산학회 1975 한국수산과학회지 Vol.8 No.3

1. 本 論文은 1969年부터 1974年에 이르기까지 仁川 松島, 安眠島, 扶安 近海에서 採集한 대합 M.lusoria와 가무락 C.sinensis의 産卵 誘發, 初期 發生 및 幼生 成長에 關한 硏究를 한 것이다. 2. 대합은 4/100와 5/100N의 NH₄OH 海水鎔液은 卵巢에 直接 注射하여 25.0∼33.3%의 産卵誘發이 可能했고, 가무락에서는 1/100, 1/80, 3/100 N의 NH₄OH의 海水溶液으로 12.5∼19.0%의 産卵 誘發을 할수있었다. 그러나 가무락의 境遇는 反復溫度 刺載에 依해서 40.0%까지 旅卵 및 放精 誘發을 可能하게 했다. 3. 대합과 가무라에 있어서의 最高의 受精率 및 發生率은 1/1000N NH₄OH의 海水溶液에서 各各 26.9%와 39.3%였다. 4. 1/1000N NH₄OH 海水溶液에 依한 대합과 가무락의 初期 發生過程에서는 受精後 50分에 極體가 出現하고 5時間 40分이 經適되면 擔輸子 幼生으로 되고 2時間이 지나면 D型 被面子 幼生이 됨을 觀察하였다. 5. 두 種의 幼生을 飼育한 結果 대합은 受精 後 1日이 지나면 平均 殼長이 109.5±0.7μ인 初期 D型期에, 11日 經過하면 14.6±1.3μ인 殼頂期에, 207이면 208. 0±0.0μ인 變態期에 달하였고, 가무락은 1日이 지나면 平均 穀長이 110μ5±0.6μ인 初期 D型期에, 10日이면 147.8±1.7. 인 殼頂期에, 20日이면 235.0±0.0μ의 變態期에 達함을 觀察하였다. 6. 初期 D型으로부터 變態期까지의 殼長(L)과 殼高(H)의 相對成長 關係는 대합이 H=0.77L+6.82이고, 가무락은 H=0.75L+8.50의 式으로 나타낼 수 있다. The comparative studies Were conducted with respect to the artificial spawning early embryonic development, metamorphosis and growth of two species Meretrix lusoria and Cycling sinensis collected from Inchon, Anmyon island and Buan areas from 1969 to 1974. The highest rate of artificial spawning of M. lusoria, which treated with a dilute ammoniun hydroxide(4/100-5/LOON)-seawater solutions, was 25.0-33.3%, whereas in C. sinensis the rate of spawning was lower than that of M, lusorira under the similar experimental conditions(12.5-19.0%). However, the rate of artificial spawning of C. sinensis increased 40% by repeated thermal stimulation The rate of artificial fertilization of M. lusoria and C. sanensis showed highest value from those individuals which were treat ed with 1/1000N NH₄OH solution. Their fertilized eggs, then, showed a normal develo pment in the 1/1000N NH₄OH solution. In the early embryonic development of M. lusoria and C. sinensis, the appearance of each of polar body, trochophore and D-shaped veliger ware observed around 50min. 5-6 hours, and 23 hours after artificial fertilization respectively. The larval shell lengths of M. lusoria reached to 109.5±0.7μ, 144.6±1.3μ, and 208.0±0.0μ around 1, 11 and 20 days, after fertilization respectively. The larval shell lengths of C. sinensis reached to 110.5±0.6μ, 147.8±1.7μ,and 235.0±0.0μ. around 1, 10 and 20 days, after fertilization respectively. The correlations of relative growth rate between the shell length(L) and shell height(H) found by the following simple formula from D-shaped veliger to metamorphosing stage. H=0.77L+6.82 for M. lusoria H=0.75L+8.50 for C. sinensis