해양환경안전학회지 (Journal of the Korean Society of Marine Environment & Safety)

  • 제25권2호
  • /
  • Pages.220-228
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  • 2019
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  • 1229-3431(pISSN)
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  • 2287-3341(eISSN)
해양환경안전학회 (The Korean Society of Marine Environment and safety)
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2015년 하계 및 추계 동해 남서해역에서 출현하는 살오징어 (Todarodes pacificus) 유생의 분포 양상

Distribution of Common Squid Todarodes pacificus Larvae in the Southwestern Part of the East Sea in Summer and Autumn, 2015

  • 김윤하 (국립수산과학원 연근해자원과) ;
  • 신동훈 (국립수산과학원 수산자원연구센터)
  • KIM, Yoon-Ha (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • SHIN, Dong-Hoon (Fisheries Resources Research Center, National Institute of Fisheries Science)
  • 투고 : 2019.02.19
  • 심사 : 2019.04.26
  • 발행 : 2019.04.30
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초록

동해 남서해역에서의 살오징어 유생 출현 특성을 파악하기 위해 2015년 8, 9, 11월 여수 근해부터 평해 연안까지 총 35개 정점에서 IKMT 네트(망목 : $500{\mu}m$)를 사용하였으며, 초기 생활단계의 주요 해양환경 인자인 수온은 CTD(SBE9plus)로 관측하였다. 유생의 월별 외투장 자료의 통계처리를 위하여 SPSS software(ver. 12.0)를 이용하였다. 채집된 살오징어 유생의 개체수는 총 228개체로 외투장 범위는 1.4 - 21.9 mm였다. 유생밀도 범위는 8월에 $0.2-5.2inds./1,000m^3$, 9월에 $0.1-3.2inds./1,000m^3$, 11월에 $0.3-7.9inds./1,000m^3$로 나타났다. 전반적으로 유생은 연안측 정점보다 조사해역의 동남부인 부산 근해에서 더 높은 밀도를 보였다. 8, 9, 11월의 유생출현률은 각각 64.3 %, 62.9 %, 68.6 %였다. 평균외투장 범위는 5.24 - 5.68 mm였으며, 월별 평균외투장은 유의한 차이를 나타내지 않았다(p > 0.05). 또한 외투장 분포에서 4 - 5 mm 구간의 유생이 최다 출현빈도를 보였다. 유생이 채집된 정점에서 유생의 생존이 가능한 수온대가 8월에는 대부분의 정점에서 표층부터 약 20 m 부근까지 유생이 서식하기에 부적합한 수온대가 존재하였던 반면, 9월과 11월에는 표층부터 유생이 서식하기 적합한 수온대가 형성되었다. 또한 얕은 수심의 연안쪽 정점에서는 표층에서 저층까지 적수온대가 형성되었으며, 100 m 이상의 깊은 수심의 외양쪽 정점에서는 표층부터 수온약층의 상층부까지 유생의 생존가능한 수온대가 형성되었다.

To determine the horizontal and temporal distribution of common squid larvae, Todarodes pacificus (hereafter T. pacificus), we conducted surveys using an IKMT net (mesh size: $500{\mu}m$) with a Fisheries Research Vessel (FRV, TAMGU 21) in the southwestern part of the East Sea in summer (August and September) and autumn (November) 2015. A total of 228 larvae, ranging in mantle length (ML) from 1.4 mm to 21.9 mm, were collected at 35 stations over the research period. The monthly average mantle length of T. pacificus larvae did not differ significantly in August, September and November. (p > 0.05). Catch densities at positive stations ranged between 0.1 and $7.9inds./1,000m^3$ over the research period. Incidence rates of T. pacificus larvae were similar over three months, in the study area (62.9 % - 68.6 %). The 4 - 5 mm mantle length range had the highest frequency in size-frequency distributions for T. pacificus larvae. The larval survival temperature ($15-24^{\circ}C$) at positive stations for catch densities was located below a 20 m depth in August whereas it was located at the surface of the water in September and November. The survival temperature for larvae existed from the bottom to the surface of the water where larvae were sampled larvae in shallow sea areas. However, the larval survival temperature occurred in a shallower location than the upper layer of the thermocline in deep sea areas at a depth below 100 m.

키워드

참고문헌

  1. Bower, J. R., Y. Nakamura, K. Mori, J. Yamamoto, Y. Isoda and Y. Sakurai(1999), Distribution of Todarodes pacificus (Cephalopoda: Ommastrephidae) paralarvae near the Kuroshio off southern Kyushu, Japan, Mar. Biol., Vol. 135, pp. 99-106. https://doi.org/10.1007/s002270050606
  2. Goto, T.(2002), Paralarval distribution of the ommastrephid squid Todarodes pacificus during fall in the southern Sea of Japan, and its implication for locating spawning grounds, Bull. Mar. Sci., Vol. 71, No. 1, pp. 299-312.
  3. Hamabe, M. and T. Shimizu(1966), Ecological studies on the common squid Todarodes pacificus Steenstrup, mainly in the southwestern waters of the Japan Sea, Bull. Japan Sea Natl. Fish. Res. Inst., Vol. 16, pp. 13-55.
  4. Hatanaka, H., S. Kawahara, Y. Uozumi and S. Kasahara(1985), Comparison of life cycles of five ommastrephid squids fished by Japan: Todarodes pacificus, Illex Illecebrosus, Illex argentinus, Nototodarus sloani sloani and Nototodarus sloani gouldi. NAFO Sci. Coun. Studies., Vol. 9, pp. 59-68.
  5. Kidokoro, H., T. Goto, T. Nagasawa, H. Nishida, T. Akamine and Y. Sakurai(2010), Impact of a climate regime shift on the migration of Japanese common squid (Todarodes pacificus) in the Sea of Japan, ICES J. Mar. Sci., Vol. 67, pp. 1314-1322. https://doi.org/10.1093/icesjms/fsq043
  6. Kim, J. J.(2008), Summer occurrence and transport process of common squid (Todarodes pacificus) paralarvae in the East China Sea. M.D. Thesis, Pukyung Nat. Univ., Busan, pp. 1-50.
  7. Kim, J. J., C. H. Kim, J. S. Lee and S. A. Kim(2014a), Seasonal Characteristics of Todarodes pacificus paralarval distribution in the northern east China Sea, Kor. J. Fish. Aquat. Sci., Vol. 47, No. 1, pp. 59-61. https://doi.org/10.5657/KFAS.2014.0059
  8. Kim, J. J., H. H. Lee, S. A. Kim and C. Park(2011), Distribution of larvae of the common squid Todarodes pacificus in the Northern East China Sea, Kor. J. Fish. Aquat. Sci., Vol. 44, No. 3, pp. 267-275. https://doi.org/10.5657/KFAS.2011.0267
  9. Kim, Y. H.(2015), The population ecology of the common squid (Todarodes pacificus) in the northwest Pacific Marginal Seas, Ph.D. Thesis, Pukyung Nat. Univ., Busan, pp. 1-130.
  10. Kim, Y. H., C. H. Moon and C. I. Lee(2014b), Distribution of the common squid Todarodes pacificus Paralarvae in the Southern Coastal Waters in the East Sea in August and September 2013, J. Kor. Soc. Oceanogr., Vol. 19, pp. 215-222.
  11. Kim, Y. H., C. H. Moon, K. H. Choi and C. I. Lee(2010), Relationship between Squid (Todarodes pacificus) catch by sea block and marine envronment in the East Sea, J. Kor. Soc. Mar. Env. Safety, Vol. 16, pp. 259-268.
  12. Kim, Y. H. and C. I. Lee(2016), Distribution of water temperature and common squid Todarodes pacificus Paralavae around Korean Waters in 2013, 2014, J. Kor. Soc. Mar. Env. Safety, Vol. 22, No. 1, pp. 11-19. https://doi.org/10.7837/kosomes.2016.22.1.011
  13. Kim, Y. H., D. H. Shin, J. H. Lee, D. H. Kwon, S. K Kang, K. S. Hwang and H. K. Cha(2017a), Distribution of the Firefly Squid, Watasenia scintillans Larvae in the Southern part of the East Sea during Summer and Autumn, J. Kor. Soc. Mar. Env. Safety, Vol. 23, No. 7, pp. 902-908. https://doi.org/10.7837/kosomes.2017.23.7.902
  14. Kim, Y. H. and H. S. Min(2008), Seasonal and interannual variability of the North Korean Cold Current in the East Sea reanalysis data, Ocean and Polar Research, Vol. 30, pp. 21-31. https://doi.org/10.4217/OPR.2008.30.1.021
  15. Kim, Y. H., K. H. Choi and C. I. Lee(2017b), Migration and Distribution of the Common Squid (Todarodes pacificus) in Korean Waters, J. Env. Sci. Int., Vol. 26, No. 2, pp. 173-181. https://doi.org/10.5322/JESI.2017.26.2.173
  16. Murata, M.(1990), Ocean resources of squids, Mar. Behav. Physiol., Vol. 18, No. 1, pp. 19-71. https://doi.org/10.1080/10236249009378779
  17. Okutani, T.(1983), Todarodes pacificus. Cephalopod life cycles, Boyle PR, ed. Academic Press, London, Vol. 1, pp. 201-214.
  18. Roper, C. F., M. J. Sweeny and C. E. Nauen(1984), Family Ommastrephidae. FAO species catalogue Vol. 3, FAO Fisheries Synopsis, p. 227.
  19. Sakurai, Y.(2006), How climate change might impact squid populations and ecosystems: a case study of the Japanese common squid, Todarodes pacificus. Globec. Rep., Vol. 24, pp. 33-34.
  20. Sakurai, Y., H. Kiyofuji, S. Saitoh, T. Goto and Y. Hiyama (2000), Changes in inferred spawning areas of Todarodes pacificus (Cephalopoda: Ommastrephidae) due to changing environmental conditions, ICES J. Mar. Sci., Vol. 57, pp. 24-30. https://doi.org/10.1006/jmsc.2000.0667
  21. Sakurai, Y., J. R. Bower, Y. Nakamura, S. Yamamoto and K. Watanabe(1996), Effects of temperature on development and survival of Todarodes pacificus embryos and paralarvae, Ame. Malacol. Bull., Vol. 13, pp. 89-95.
  22. Shevtsov, G. A., M. A. Zuev, O. N. Katugin and N. M. Mokrin(2005), Distribution and biology of the Japanese common squid (Todarodes pacificus) in the Pacific Ocean off the Kuril Islands and eastern Kamchatka in summer. Ruthenica 15(2), pp. 99-108.
  23. Shimura, T., J. Yamamoto, Y. Kamei and Y. Sakurai(2005), Possible spawning by the japanese common squid, Todarodes pacificus at Yamato Rise, Sea of Japan, Phuket Mar. Biol. Cen. Res. Bull., Vol. 66, pp. 267-273.
  24. Sweeney, M. J., C. F. E. Roper, K. M. Mangold, M. R. Clark and S. V. Boletzky(1992), "Larval" and juvenile cephalopods: A manual for their identification. Smithsonian Contributions to Zoology, Smithsonian Institution Press, USA, pp. 109-110.
  25. Yamamoto, J., S. Masuda, K. Miyashita, R. Uji and Y. Sakurai(2002), Investigation of the early stage of the ommastrephid Todarodes pacificus near the Oki Islands (Sea of Japan), Bull. Mar. Sci., Vol. 71, No. 2, pp. 987-992.
  26. Yamamoto, J., T. Shimura, R. Uji, S. Masuda, S. Watanabe and Y. Sakurai(2007), Vertical distribution of Todarodes pacificus (Cephalopoda: Ommastrephidae) Paralarvae near the Oki Islands, southwestern Sea of Japan, Mar. Biol., Vol. 153, pp. 7-13. https://doi.org/10.1007/s00227-007-0775-0

피인용 문헌

  1. 동해와 서해의 살오징어(Todarodes pacificus) 회유 및 분포에 관한 고찰 vol.4, pp.1, 2019, https://doi.org/10.23005/ksmls.2019.4.1.14