Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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The Distribution and Migration Boundary Lines of Oncorhynchus keta in the Milyang River

연어(Oncorhynchus keta)의 밀양강 분포 및 소상 한계선 파악

  • Hong, Donghyun (Department of Integrated Biological Science, Pusan National University) ;
  • Seong, Ki Baik (Waterco) ;
  • Ko, Eui-Jeong (Department of Integrated Biological Science, Pusan National University) ;
  • Jung, Eunsong (Department of Integrated Biological Science, Pusan National University) ;
  • Jo, Hyunbin (Department of Integrated Biological Science, Pusan National University) ;
  • Joo, Gea-Jae (Department of Integrated Biological Science, Pusan National University)
  • Received : 2020.11.20
  • Accepted : 2020.12.14
  • Published : 2020.12.31
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Abstract

In this study, we carried out a distribution and migration boundary lines of chum salmon (Oncorhynchus keta) in the Milyang River. We measured the total length of dead chum salmons. As a results, 40 chum salmons were found during the study period, 25 dead salmons and 15 alive individuals. The ratio of female was 64%. We verified the migration boundary lines of chum salmons based on a sighting survey until detecting a structure that chum salmons are not able to migrate upstream. We discovered that chum salmons were not able to migrate up to 13 km in a mainstream of the Milyang River and up to 12 km in the Danjang stream (a tributary of the Milayang River) from upstream of the Yerim Bridge. Therefore, our results indicate that Milyang River should improve a river connectivity by demolishing weirs that disturb chum salmon's migration or installing appropriate fishways. Also, effective legislations are needed to retain naturality in spawning ground and micro-habitats to increase the survival rate of parrs and smolts.

본 연구는 낙동강지류인 밀양강에 소상한 연어를 대상으로 소상, 산란 분포를 최초로 파악하고 소상 한계선을 확인하였다. 2020년 10월 25일부터 11월 28일까지 확인된 개체들 중, 사체는 전장을 측정하고 암-수 구별을 하였다. 조사 결과 총 40개체의 연어를 발견하였으며 이 중 사체는 25마리, 살아있는 개체는 15마리였다. 대부분 산란장으로 판단되는 지점 인근 수변부에서 살아있는 개체와 사체가 발견되었다. 연어의 소상 한계선 파악의 경우 연어가 소상할 수 없는 형태의 보가 등장할 때까지 상류방향으로 이동하여 확인하였으며, 밀양강 본류의 경우 예림교 기준 상류 13 km, 지천인 단장천의 경우 밀양강 합류부에서부터 12 km까지 연어의 소상이 가능할 것으로 확인하였다. 따라서 연어가 소상하기 위한 보의 철거 및 어도설치와 같은 하천연결성 확보가 필요한 것으로 판단되며, 연어의 치어생존률을 높이기 위한 산란장 및 미소서식처 자연성 확보 방안이 필요할 것으로 판단된다.

Keywords

Acknowledgement

이 과제는 부산대학교 기본연구지원사업(2년)에 의하여 연구되었음

References

  1. Barton, L.H. 1992. Tanana River, Alaska, fall chum salmon radio telemetry study. Alaska Department of Fish and Game, Division of Commercial Fisheries, Fishery Research Bulletin No.92-01, Juneau.
  2. Battin, J., M.W. Wiley, M.H. Ruckelshaus, R.N. Palmer, E. Korb, K.K. Bartz and H. Imaki. 2007. Projected impacts of climate change on salmon habitat restoration. Proceedings of the National Academy of Sicences of the United States of America 104(16): 6720-6725. https://doi.org/10.1073/pnas.0701685104
  3. Bilby, R., E.W. Beach, B.R. Fransen, J.K. Walter and P.A. Bisson. 2003. Transfer of Nutrients from Spawning Salmon to Riparian Vegetation in Western Washington. Transactions of the American Fisheries Society 132(4): 733-745. https://doi.org/10.1577/T02-089
  4. Chae, B.S., H.B. Song and J.Y. Park. 2019. A Field Guide to the Freshwater Fishes of Korea. LG Evergreen Foundation, Seoul.
  5. Esteve, M. 2005. Observations of spawning behavior in Salmoninae: Salmo, Oncorhynchus and Salvelinus. Reviews in Fish Biology and Fisheries 15: 1-21. https://doi.org/10.1007/s11160-005-7434-7
  6. Fukuwaka, M. and T. Suzuki. 2001. Early sea mortality of chum salmon juveniles in the open coastal waters of the Japan Sea. North Pacific Anadromous Fish Commission. Bulletin. Technical Report 2: 7-8.
  7. Gleick, P.H. 2001. Making every drop count. Scientific American 284(2): 40-46. https://doi.org/10.1038/scientificamerican0201-40
  8. Groot, C. and L. Margolis. 1991. Pacific Salmon Life Histories. University of British Columbia Press, Vancouver.
  9. Kim, G.E., C.G. Kim and Y.H. Lee. 2007. Genetic similarity-dissimilarity among Korea Chum salmons of each stream and their relationship with Japan salmons. The Sea: Journal of the Korean Society of Oceanography 12: 94-101.
  10. Kim, I.S. and J.Y. Park. 2002. Freshwater fishes of Korea. KyoHak Publishing, Seoul.
  11. Kim, S.J., M.S. Shin, J.K. Kim, J.Y. Lee, K.J. Jeong, B.Y. Ahn and B.C. Kim. 2012. Oxygen fluctuation monitored with high frequency in eutrophic urban stream (the Anyang Stream) and the effect of weather condition. Korean Journal of Ecology and Environment 45: 34-41.
  12. Kulmala, S., P. Haapasaari, T.P. Karjalaien, S. Kuikka, T. Pakarinen, K. Pakkila, A. Romakkaniemi and P.J. Vuorinen. 2012. Ecosystem services provided by Baltic salmon: a regional perspective to the socio-economic benefits associated with a keystone migratory species. In Socio-economic Importance of Ecosystem Services in the Nordic Countries: Synthesis in the Context of The Economics of Ecosystems and Biodiversity (TEEB). pp. 266-276.
  13. Kwon, O.N., J.K. Kim, M.G. Yoon, D.H. Kim and K.E. Hong. 2014. Marine prey selectivity of released juvenile chum salmon (Oncorhynchus keta) during early marine migration in Korean waters. Journal of Fisheries and Marine Sciences Education 26: 421-429. https://doi.org/10.13000/JFMSE.2014.26.2.421
  14. Lee, H.S., K.B. Seong and C.H. Lee. 2007. History and Status of the Chum Salmon Enhancement Program in Korea. The Sea: Journal of the Korean Society of Oceanography 12: 73-80.
  15. Lim, J.Y. 1990. A study on the production and the effect of sea ranching fingerling of anadromous chum salmon, Oncorhynchus keta (WALBAUM) in the eastern coast of Korea. Department of Aquaculture, Graduate School of Industry National Fisheries University of Pusan, Pusan.
  16. McCornick, S.D. 2008. Smolt Physiology and Endocrinology. Fish Physiology 32: 199-251. https://doi.org/10.1016/B978-0-12-396951-4.00005-0
  17. McNeil, W.J. 1962. Mortality of pink and chum salmon eggs and larvae in southeast Alaska streams. Ph.D. dissertation, University of Washington, Seattle.
  18. Nakdong River Flood Control Office. 2020. http://www.nakdongriver.go.kr/main.do. Accessed in 2020.11.19.
  19. National Fishway Information System. 2020. http://www.fishway.go.kr. Accessed in 2020.12.01.
  20. Park, H.Y., J.M. Yoon, G.N. Jang and H.T. Hur. 1995. Fish biology. Jungmunkag, Seoul, p. 50.
  21. Powers, P.D. and J.F. Orsborn. 1985. New Concepts in Fish Ladder Design: Analysis of Barriers to Upstream Fish Migration, Volume IV of IV, Investigation of the Physical and Biological Conditions Affecting Fish Passage Success at Culverts and Waterfalls, 1982-1984 Final Report. Washington State University, Albrook Hydraulics Laboratory.
  22. Schuett-Hames, D.E., N.P. Peterson, R. Cornad and T.P. Quinn. 2000. Patterns of Gravel Scour and Fill after Spawning by Chum Salmon in aWestern Washington Stream. North American Journal of Fisheries Management 20(3): 610-617. https://doi.org/10.1577/1548-8675(2000)020@@<@@0610:pogsaf@@>@@2.3.co;2
  23. Seeb, L.W., P.A. Crane, C.M. Kondzela, R.L. Wilmot, S. Urawa, N.V. Varnavskaya and J.E. Seeb. 2004. Migration of pacific rim chum salmon on the high seas: insights from genetic data: insights from genetic data. Environmental Biolology of Fishes 69: 21-36. https://doi.org/10.1023/B:EBFI.0000022900.82523.63
  24. Smith, A.K. 1973. Development and application of spawning velocity and depth criteria for Oregon salmonids. Transactions of the American Fisheries Society 102(2): 312-316. https://doi.org/10.1577/1548-8659(1973)102@@<@@312:daaosv@@>@@2.0.co;2
  25. Seung, K.B. 1997. Biological characteristics and population genetics of salmonid species from Korea. Department of Biotechnology, Graduate School, Pukyong National University.
  26. Urawa, S., S. Sato, P.A. Crane, B. Agler, R. Josephson and T. Azumaya. 2009. Stock-specific ocean distribution and migration of chum salmon in the Bering Sea and North Pacific Ocean, North Pacific Anadromous Fish Commission, Bulletin 5. npafc.org/new/pub_bulletin.html.(June 2010).
  27. Van den Berghe, E.P. and M.R. Gross. 1984. Female size and nest depth in coho salmon (Oncorhynchus kisutch). Canadian Journal of Fisheries and Aquatic Science 41: 204-206. https://doi.org/10.1139/f84-022