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고정락,금지돈,황의욱 한국유전학회 2006 Genes & Genomics Vol.28 No.4
Damselfish (Actinopterygii, Perciformes, Pomacentridae) are a diverse and widespread family consisting primarily of marine fish found throughout tropical oceans, and they are ionships among the pomacentrids are highly controversial due to their dramatic and complicated morphological variations, and there are striking diferences between the traditional phylogeny, which is based on morphologies, and the molecular phylogeny, which is based on DNA sequences. In the present study, the phylogenetic relationships among the pomacentrids were investigated using partial mitochondrial 16S rDNA sequences from 40 species, 19 genera, and 3 subfamilies. The partial 16S rDNAs from the four pomacentrid species (Pomacentrus coelestis, Pomacentrus bankaensis, Chromis fumea a n d Abudefduf vaigiensis) were newly sequenced in this study. the family Pomacentridae (BPP 74%) and the subfamily Amphiprioninae (9%), Dascyllus (90%), Stegastes (10%) and Abudefduf (100%) are monophyletic groups. However, this study also shows that the subfamily Pomacentrinae may be divided into a primitive Asemblage I and an advanced Assemblage II. e grouped together (96%), and Assemblage II apears to be paraphyletic to the subfamily Amphiprioninae. Mecaenichthys immaculatus and Acanthochromis polyacanthus, which have traditionally ben considered putative chromine members, appear with Chromis cyanea within Asemblage I and so reveals that Chromis, Amphiprion a n d Chrysiptera may not be monophyletic groups. These results are generally coincident with previous molecular findings. It is very likely that the traditional pomacentrid classification scheme needs to be thoroughly re-examined.
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돌돔, Oplegnathus fasciatus(Temminck et Schlegel)의 卵發生 및 仔稚魚期의 形態
高正樂,金容億 釜山水産大學校 1992 釜山水産大學 硏究報告 Vol.32 No.2
1991年 7月 6日에 제주도 한림 水産振興院 水産種苗 培養場과 1991年 6月 19日 경남 통영군 산양면에서 自然産卵하여 얻은 受精卵의 卵發生過程과 仔稚魚의 成長에 따른 外部形態와 내부골격의 骨化過程을 調査한 結果를 要約하면 다음과 같다. 受精卵은 1개의 油球를 가지는 分離浮性卵으로서 卵徑은 0.85±0.03 ㎜(n=20)였으며, 油球徑은 0.20±0.01 ㎜(n=20)이고, 水溫이 22.2℃에서 受精卵은 약 36時間만에 孵化하였다. 孵化直後의 仔魚는 全長이 平均 1.75㎜로 卵黃을 가지고 등쪽 막지느러미에 4∼6개의 黑色素胞가 있으며, 體表에는 黑色素胞와 黃色素胞가 골고루 분포한다. 孵化後 27日째 全長이 平均 10.42㎜에 달하면 기條數가 D.ⅩⅠ∼ⅩⅡ, 18,A. Ⅲ - 11, Ⅴ.4,C.9+9,P.14로 定數에 달하여 稚魚期로 移行하다. 頭蓋骨 및 內臟骨의 骨化는 孵化後 6日째(全長 3.74㎜)부터 처음으로 骨化가 시작되며 孵化後 34日째(全長 14.53㎜) 稚魚期에 달하면 대부분의 골격이 완성된다. 脊椎骨의 椎體는 後期稚魚期때가 되어서야 骨化가 일어나며, 腹椎骨의 중앙부에서 腹部 앞으로, 그리고 尾部로 骨化가 진행되며, 神經棘이 血管棘보다 먼저 骨化가 일어난다. 일반적으로 어류에 있어서 골격의 발달은 攝餌와 呼吸에 關聯된 部位부터 먼저 骨化가 일어 나는데, 돌돔의 경우에는 攝餌物이 미소하여 呼吸器 보다는 顎骨 부위의 骨化가 늦었다. 後期仔魚期에서 부터 빠른 속도로 骨化가 되어져 孵化後 35日째(全長 15.51㎜)에 달하면 골격이 完成된다. In July 6, 1991, the summary of the result of investigation of embryonic development, morphology, and ossification of skeleton process according to growth of larvae and juveniles of naturally spawned eggs at Che Ju island and Chung Mu is shown. A mature eggs with oil globule has a diameter of 0.85�0.03 ㎜(n=20), the oil globule diameter of 0.20�0.01 ㎜(n=20). Hatching takes 36hrs at 22.2�. The newly hatched larvae reached 3.75 ㎜ in total length, approximately, and possess yolk sac, about 4�6 melanophore at dorsal memberanous fin and distributed melanophore and xanthophore on body surface. Twenty seven days after hatching, the juveniles measured 10.42 ㎜ in mean total length, and each fin ray was identical with the juveniles, D.ⅩⅠ~ⅩⅡ, 18,A. Ⅲ-11, Ⅴ.4,C.9+9,P.14. Six days after hatching(T.L. 3.74㎜), ossification of cranium and visceral skeleton have occured and reached the juvenile stage, thirty four days after hatching(T.L. 14.53㎜), all bone was ossified. Ossification of vertebrae of centrum have occured in post larva stage. At first, ossification of skeleton occuring at the parts of related respiration, so that ossification of respiratory organ is faster than maxilla because the size of food is very small. From the post larvae skeleton development, after thirty five days of hatching(T.L. 15.51㎜), skeleton formation was completed.
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Ni₁-xCdxFeAlO₄계의 Mossbauer 스펙트럼 연구
고정대(Jeong-Dae Ko),홍성락(Sung-Rak Hong),백승도(Seung-Do Baek) 한국자기학회 1998 한국자기학회지 Vol.8 No.4
The Mossbauer spectra of the Ni_(1-x)Cd_xFeAlO₄ system were investigated with the Cd content x at room temperature. The spectra of the samples exhibit various patterns as follows 1) superparmagnetic relaxation for 0≤x≤0.2, 2) ferrimagnetic sextet for 0.3≤x≤0.5, 3) ferromagnetic relaxation for x=0.6, 0.7, 4) paramagnetic doublet for 0.8≤x≤1, with the Cd content x. In the samples with x values from 0 to 0.2, the substituted Cd²+ ions transfer the Al³+ ions from A-site to B-site mainly. The superparamagnetic relaxation effect and the ferromagnetic relaxation effect are derived from the Al³+, Cd²+ respectively. The magnetic structure of the Ni_(1-x)Cd_xFeAlO₄ system was explained by the Yafet-Kittel model.
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Mossbauer spectroscopy에 의한 제주 토기의 물리적 특성 연구
고정대,강애신,최원준,윤태건,홍성락 濟州大學校 基礎科學硏究所 1999 基礎科學硏究 Vol.12 No.1
In this study we are reporting the results of measurement of the X-ray diffraction and ?? Mossbauer spectrum for the four plain coarse pottery sherds, Which are unearthed from the Gosanli, Sangmoli and Bukchonli district in Cheju Island. By the X-ray diffraction spectrum at room temperature, the principal minerals of the four plain coarse pottery sherd samples are silicate minerals which are equal to SiO₂, including a little Magnetite, Hematite, Goethite, and Maghemitite. The result of analysis by Mossbauer spectroscopy shows ?? at three regional neolithic era pottery, it is presumed to come out by magnetic hyperfine splitting. For four plain coarse pottery sherd samples taken from three region, the ratio of ?? by Mossbauer spectrum at room temperature is zero therefore we presume that the plain coarse pottery sherds were fired in the atmosphere.
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