논 생태계에서 영농방법에 따른 미꾸라지개체군의 변동 요인 분석 = Variation in Population Size of Mudfish by Agricultural Practices in Paddy Fields

다국어 초록 (Multilingual Abstract)

Research Article : BACKGROUND: This study was carried out to compare population size of mudfish (Misgurnus mizolepis) between the agricultural practices and to investigate the causes of its differences. We also provided basic information for sustainable use of mudfish population in paddy fields. METHODS AND RESULTS: Mudfish and benthic invertebrates which are diet of mudifish were investigated from 8 sites of organic and conventional rice paddy fields in South Korea. Total number of mudfish were 1,882 individuals in survey sites. Mudfish population were 2.4 times larger in organic paddy fields (1,333 individuals) than in conventional paddy fields (549 individuals). The population size of mudfish was larger in Mungyeong-si, Gyeongsangbuk-do and Anseong-si, Gyeonggi-do with relatively better environmental conditions than the other 5 sites including Suwon-si, Gyeonggi-do, Cheongyang-gun, Chungcheongnam-do, Gunsan-si, Jeollabuk-do, Gimje-si, Jeollabuk-do, Hwasun-gun, Jeollanam-do, Hamyang-gun, Gyeongsangnam-do. Benthic invertebrates collected from survey sites were 74 species, 68 genera, 46 families, 19 orders, 6 classes and 3 phyla. According to agricultural practices, benthic invertebrates were identified 66 species, 62 genera, 41 families, 17 orders, 6 classes and 3 phyla in organic paddy fields while there were 66 species, 60 genera, 42 families, 18 orders, 6 classes and 3 phyla in conventional paddy fields. Dominant invertebrates were Chironomidae sp., Branchiopoda sp., Ostracoda sp., and Copepoda sp. There were no differences in dominant species between organic and conventional paddy fields. Population size of mudfish tended to increase with the population size of Chironomidae sp., Branchiopoda sp., Ostracoda sp., and Copepoda sp. But, only population of Chironomidae sp. and Copepoda sp. statistically related to population size of mudfish. The number of individuals of mudfish (Misgurnus mizolepis) was higher at the low rate of urban area than any other surveyed region and was affected by appearance ratio of main preys such as Chironomidae sp. and Ostracoda sp. CONCLUSION(S): The population size of mudfish in rice paddy fields could be affected by environmental conditions and agricultural practices such as organic and conventional methods.

참고문헌 (Reference)

1 김익수, "줄종개 Cobitis tetralineata(Pisces; Cobitidae)의 개체군 생태" 한국생태학회 29 (29): 277-286, 2006

2 홍양기, "자호천에 서식하는 멸종위기어류 얼룩새코미꾸리 Koreocobitis naktongensis (Cobitidae)의 서식환경과 번식, 섭식생태" 한국어류학회 23 (23): 234-241, 2011

3 김종선, "유기농업 논에서 저서성대형무척추동물의 다양성" 한국유기농업학회 17 (17): 193-209, 2009

4 최준길, "연곡천에 서식하는 북방종개 Cobitis pacifica (Cobitidae)의 생태적 특성" 한국하천호수학회 42 (42): 26-31, 2009

5 김익수, "섬진강에 서식하는 왕종개 Iksookimia longicorpa (Cobitidae)의 생태" 한국어류학회 17 (17): 112-122, 2005

6 김익수, "미꾸리과 어류 남방종개 Iksookimia hugowolfeldi (Cobitidae)의 핵형" 한국어류학회 15 (15): 8-129, 2003

7 고명훈, "만경강에 서식하는 참종개 Iksookimia koreensis와 점줄종개 Cobitis lutheri의 서식환경과 섭식생태" 한국어류학회 21 (21): 253-261, 2010

8 김종길, "농업생태계 내 수서곤충류의 생태분석 및 환경평가" 한국응용곤충학회 46 (46): 335-341, 2007

9 김재옥, "논 중간 낙수기에 미꾸라지 피난처로서 둠벙의 기능 평가" 한국환경농학회 30 (30): 37-42, 2011

10 변화근, "내린천에 서식하는 새코미꾸리 Koreocobitis rotundicaudata (Cobitidae)의 생태" 한국어류학회 19 (19): 299-305, 2007

11 Choi, B. G., "Vegetation of Ulleungdo" Keimyung University 2007

12 Shannon, C. E., "The Mathematical Theory of Communication" University of Illinois Press 1949

13 Oh, M. K., "Study on respiratory system of Misgurnus mizolepis (Cobitidae) related to environmental change of rice field" Chonbuk National University 2012

14 Kim, H. S., "Studies on nutrient composition of loach; 2. Seasonal variations in heavy metal contents of loach in various area" 18 : 167-172, 1985

15 Saitoh, K., "Movement and spawning of several freshwater fishes in temporary waters around paddy fields" 38 : 35-47, 1988

16 Shin, L. S., "Morphorgenetic charateristics of Chinese muddy loach(Misgurnus mizolepis) and Muddy loach(M. anguillicaudatus)" Chonnam National University 2012

17 Nam, K. C., "Intestinal respiration and oxygen consumtion of mud loach(Misgurnus mizolepis)" Pukyong National University 2007

18 Surdick, R. F., "Environment requirements and pollution tolerance of Plecoptera. EPA-600/ 4-77-062"

19 Uchida, S., "Distribution of Plecoptera in the Tamagawa river system. central Japan" Kluwer Academic publishers 1990

20 Kim, I. S., "Diploid-triplod hybrid complex of the spined loach Cobitis sinensis and C. longicorpus (Pices, Cobitidae)" 2 : 203-210, 1990

21 Lim, H. S., "Characterization and DNA Structure Analysis of Replication Origin of Misgurnus mizolepis" 9 : 93-100, 1996

22 Choi, E. K., "Biology of the Southern Spined Loach, Iksookimia hugowolfeldi (Pisces, Cobitidae)" Chonbuk National University 2003

23 Han, M. S., "Aquatic invertebrates in paddy ecosystem of Kore" National Academy of Agricultural Science 1-529, 2008

24 Yoon, I. B., "An illustration of Korean aquatic insects" Jeonghaengsa 1-262, 1995

25 Nalbant, T. T., "A study of the genera of Bottiinae and Cobitidae(Pisces, Ostariophysi, Cobitidae)" Trav. Mus. Hist. nat 347-379, 1963

26 Jeong, M. R., "A study of habitat environmental characteristics of mudfish inhabited in rice field" Korea National University of Education 2010