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Song, Ho-Bok; Kwon, Oh-Kil
- Korean Journal of Ichthyology
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- v.7 no.1
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- pp.18-24
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- 1995
The spawning condition was investigated of the bitterling, Acheilognathus yamatsutae Mori in aquariums. Sexual responses in male and female bitterlings were very sensitive to the mussel rather than the other sex. But spawning behavior was shown ouly when all of the male, the female and the mussel were present. And the sexual response was not shown at all when there was no direct contact with the live mussel.
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YANG Hong Jun
- Korean Journal of Fisheries and Aquatic Sciences
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- v.4 no.2
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- pp.66-74
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- 1971
The general morphological characteristics of scales on the body surface in Cyprininae fishes can be summarized as follows: 1) The lentic and lotic habitats have no relation to the phase of scales. 2) The scales in the anterior body parts have transverse diameters longer than their longi-tudinal diameters: in the posterior body parts, the opposite holds true. 3) The scales having the largest diameters, both longitudinal and transverse, are the lateral line scales. 4) The position of the focus on each scale move posteriorly as the scale grows. In other words, the forward growth of the scales exceeds the backward. 5) The number of ridges in each scale is in proportion to longitudinal diameter. 6) In Cyprinus, the scales on the middle part of the body surface have more grooves than those on the other parts. All scales on this species commonly show incompleted grooves on the anterior and posterior areas, but the lateral area lacks grooves entirely. 7) In Carassius, there are more completed grooves than incompleted grooves. All grooves are arranged in radial patterns on the scales.
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Byung-Soo Chae;Hong-Jun Yang
- Animal cells and systems
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- v.3 no.1
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- pp.17-21
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- 1999
A new species of gudgeon, Microphysogobio rapidus is described from 25 specimens collected from the Naktong River system, Korea. The new species is similar to Microphysogobio yaluensis but is distinguished from the latter and congeners by the combination of the following characteristics: number of papilla on the upper lip, 4.5 scales above the lateral line, short distance from the anus to the origin of the anal fin, wide scaleless area of the abdomen, nuptial colour consisting of a longitudinal green stripe on the lateral side of the body and bright blue colour of the suborbital region and operculum. A key to the species of Microphysogobio from Korea is also included.
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Park, In-Seok
- Development and Reproduction
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- v.25 no.1
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- pp.25-32
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- 2021
The main purpose of the current study was to obtain nuclear DNA content data among the representatives of the families and subfamilies of 31 endemic fishes that inhabit river of Korea. DNA contents of 31 endemic species were observed to rang from 1.5 to 4.8 pg DNA/nucleus. In Cyprinidae, DNA content of Abbottina springeri (1.5±0.03 pg DNA/nucleus) was the lowest value and DNA content of Carassius cuvieri (4.5±0.32 pg DNA/nucleus) was the highest value in all experimental groups. In Cobitidae, DNA content of Iksookimia longicorpa (3.9±0.17 pg DNA/nucleus) was the highest value and DNA content of Orthrias toni (1.5±0.18 pg DNA/nucleus) was the lowest value in all experimental groups. This study provides new information for a better understanding of the process of genomic evolution in 31 endemic species in river of Korea.
https://doi.org/10.12717/DR.2021.25.1.25 인용 PDF KSCI