• Journal of Marine Life Science
• /
• v.3 no.2
• /
• pp.87-95
• /
• 2018

To investigate effects of starvation on physiological changes, stress response, and survival of cobitid loach (Misgurnus anguillicaudatus) exposed to sodium nitrite (NaNO₂), a 4-week experiment was conducted. Fewer fish survived in the starved group than those in the fed group during the experiment. Starvation resulted in growth retardation, leading to differences in body length and body depth between fed and starved groups. The fed gorup continued to grow and remained in good condition. Blood chemical analysis (plasma cortisol and glucose) showed significant differences in stress response to nitrite exposure between fed and starved groups (p < 0.05). These results suggest that all parameters employed in this study to assess effects of starvation with NaNO₂ stress are useful information for researching nutritional status in cobitid loach.

• Animal Systematics, Evolution and Diversity
• /
• v.3 no.1
• /
• pp.57-62
• /
• 1987

잔라북도 부안군의 백천에 서식하는 기름종개속 어류의 표본을 조사한바, 종검색의 기준이 되는 수컷 가슴지느러미 기부에 출현하는 골질반은 참종개 Cogbitis koreensis 와 비슷하지만, 조골수역의 기름종개 속 모든 표본은 체측반문의 모양이 특이하고, 척추골수가 37-40개로 적으며 체장범위가 85m 이하인 소형인 점이 참종개와는 잘 구별되어 신아종 C.koreensis pumilus n. subsp.(부안종개, 신칭)로 명명 기재한다.

• Korean Journal of Ichthyology
• /
• v.11 no.2
• /
• pp.172-176
• /
• 1999

Chromosome of cobitid fishes, Iksookimia yongdokensis collected from the 4 streams flowing to the eastsouthern coast of Korea was studied using chromosome of gill and kidney cells prepared by flame drying technique. The results obtained were as follows: the chromosome number was 100 composed of 44 meta-submetacentric and 56 subtelo-telocentric chromosomes, and the fundamental number (FN) was 144. It was remarked that Iksookimia yongdogensis was distinguishable from its congeners in the karyotype. The above evidences may suggest that Iksookimia yongdokensis was one of the tetraploid species of cobitid fishes.

• Korean Journal of Ichthyology
• /
• v.2 no.2
• /
• pp.203-210
• /
• 1990

The cobitid hybrid complex of C. sinensis and C. longicorpus occurs commonly in the upper streams of the Nakdong River, Korea where it is sympatric with the bisexual species, C. sinensis and C. longicorpus.The specimens of hybrid complex which are all females accounted for approximately 40% of all cobitid fish observed. These cobitid complex having the unique cloudy specks on body sides appeared to be morphologically intermediate between C. sinesis and C. longicorpusus. The chromosomes of hybrid complex were composed of both diploid form of 49 and triploid form of 73. This forms are tentatively presumed to be a unisexual complex originating from hybrid between C. sinensis and C. longcorpus.

• The Korean Journal of Ecology
• /
• v.6 no.4
• /
• pp.10-20
• /
• 1983

Morphological and ecological comparions are made between specimens of Cobitis koreensis KIM and the geographically restricted population of the Cobitid fish which is found along the Begchon stream, Puangun, Cholla-bugdo province over a 12-month period of 1982 and 1983. The Begchon population is tentatively identified as Cobitis koreensis, but the color patterns and two morphometric proportions differ widely fromthose reported previously for this species. In addition to these character, it is easily distinguished from C. koreensis by the smaller body size, by having the larger egg size and the less egg number in female during the breeding season. As the differentiation of this population is primarily due to geographically isolation, it is supposed that Begchon cobitid population may be an undescribed distinct subspecies of K. koreensis or above the conventional subspecies level.

• The Korean Journal of Zoology
• /
• v.38 no.2
• /
• pp.212-219
• /
• 1995

Through the histolosical observation of ovary in the nine species of the genus Cobitis, we found that specific adhesive membranes were attached to the outer zone radials during the vitellosenesis. These adhesive membranes could be classified into four forms as follows: 1) granular form of Colitis lutheri, C. striate, and C. sinensis, 2) villous form of C. longicorpus, C. konensis koreensis, C. k. pumilus, and C. granoei, 3) saw-like form of C. rotundicaudata, and 4) filamentous form of C. chou. The various forms of adhesive membrane of egg in the cobitid fishes are showed a species specificitv with reference to their habitats and spawning property.

• The Korean Journal of Zoology
• /
• v.19 no.4
• /
• pp.171-178
• /
• 1976

A new species of Cobitid fish, Cobitis longicorpus is described, based upon many specimens from several tributaries of the Seomjin River situated in the south western part in Korea. Cobitis longicorpus was previously reported as the crossband type of C. taenia by all ichthyologists in Korea. This is distributed in the Seomjin River and characterized by the distinctive cross-band color pattern, the black spots at the back of its opercula, and the structure of lamina circularis in male.

• Proceedings of the Zoological Society Korea Conference
• /
• 1998.04a
• /
• pp.17-17
• /
• 1998

No Abstract, See Full Text

• Proceedings of the Zoological Society Korea Conference
• /
• 1996.10a
• /
• pp.62.1-62
• /
• 1996

No Abstract, See Full Text

• Proceedings of the Zoological Society Korea Conference
• /
• 1997.10b
• /
• pp.92.2-92
• /
• 1997

No Abstract, See Full Text