국내 명태 Theragra chalcogramma 자연채란과 난황흡수까지의 난 발생 Naturally Collection and Development until Yolk Absorption of Domestic Walleye Pollock Theragra chalcogramma Fertilized Eggs and Larvae원문보기
우리는 자연에서 포획된 명태 어미를 이용하여 자연채란 시험을 하였으며, 이 과정에서 국내 명태 포획과 수정란의 발생 및 부화 후 난황흡수에 대한 정보를 얻는 것이 목적이다. 모든 명태는 삼중자망과 정치망에서 잡혀 당일 해양심층수 수조에 수용하였다. 이 어미 명태는 총 254마리에서 43.0% (86마리)가 2014년 3월에, 57.9%(147 마리)가 고성 남부지역에서 포획되었다. 그리고 주 산란기는 2월이었지만 (91.0% 개체들이 산란기), 6월까지 지속되었다. 포획 후 2015년 2월 4일에서 22일 사이에 12번의 자연채란으로부터 1,640 mL (~820,000개)의 수정란을 확보하였다. 자연채란된 수정란에서 14%(~115,000개)는 발달하지 않고 폐사하였다. 이 살아있던 부유란들은 $5.5{\pm}0.2^{\circ}C$의 해양심층수에서 사육 관리하였다. 이들의 크기는 $1.5{\pm}0.03mm$였다. 자연채취 후 6시간이 경과한 수정란은 2세포기, 24시간 경과 후에는 포배기 단계로 발생하였다. 그리고 자연채란 후 340 시간 경과 시 전장 $5.6{\pm}0.21mm$로 부화하였다. 이들 부화한 자어 길이와 난황의 면적은 $5.2{\pm}0.25mm$와 $9.5{\pm}1.00mm^2$였다. 그리고 4일이 경과하였을 때 난황은 $2.2{\pm}0.53mm^2$ (부화 당시 대비 $23.1{\pm}5.55%$)로 조사되었다. 결과적으로 우리의 연구결과는 국내에서 첫 명태 자연채란 사례로 해양심층수 수조에서 이루어졌다는 것이 매우 의의가 있다고 할 수 있다. 그리고 이를 통한 인공종묘생산과 자원회복의 가능성을 확인하였다고 할 수 있다.
우리는 자연에서 포획된 명태 어미를 이용하여 자연채란 시험을 하였으며, 이 과정에서 국내 명태 포획과 수정란의 발생 및 부화 후 난황흡수에 대한 정보를 얻는 것이 목적이다. 모든 명태는 삼중자망과 정치망에서 잡혀 당일 해양심층수 수조에 수용하였다. 이 어미 명태는 총 254마리에서 43.0% (86마리)가 2014년 3월에, 57.9%(147 마리)가 고성 남부지역에서 포획되었다. 그리고 주 산란기는 2월이었지만 (91.0% 개체들이 산란기), 6월까지 지속되었다. 포획 후 2015년 2월 4일에서 22일 사이에 12번의 자연채란으로부터 1,640 mL (~820,000개)의 수정란을 확보하였다. 자연채란된 수정란에서 14%(~115,000개)는 발달하지 않고 폐사하였다. 이 살아있던 부유란들은 $5.5{\pm}0.2^{\circ}C$의 해양심층수에서 사육 관리하였다. 이들의 크기는 $1.5{\pm}0.03mm$였다. 자연채취 후 6시간이 경과한 수정란은 2세포기, 24시간 경과 후에는 포배기 단계로 발생하였다. 그리고 자연채란 후 340 시간 경과 시 전장 $5.6{\pm}0.21mm$로 부화하였다. 이들 부화한 자어 길이와 난황의 면적은 $5.2{\pm}0.25mm$와 $9.5{\pm}1.00mm^2$였다. 그리고 4일이 경과하였을 때 난황은 $2.2{\pm}0.53mm^2$ (부화 당시 대비 $23.1{\pm}5.55%$)로 조사되었다. 결과적으로 우리의 연구결과는 국내에서 첫 명태 자연채란 사례로 해양심층수 수조에서 이루어졌다는 것이 매우 의의가 있다고 할 수 있다. 그리고 이를 통한 인공종묘생산과 자원회복의 가능성을 확인하였다고 할 수 있다.
We collected and reared Theragra chalcogramma walleye pollock brood-stock for use in natural spawning tests and undertook to obtain domestic pollock via fertilized egg capture, development of fertilized eggs, and absorption of yolk sac after hatching. Whole pollock were caught with trammel and set n...
We collected and reared Theragra chalcogramma walleye pollock brood-stock for use in natural spawning tests and undertook to obtain domestic pollock via fertilized egg capture, development of fertilized eggs, and absorption of yolk sac after hatching. Whole pollock were caught with trammel and set nets and immediately placed in a deep-sea water tank. Adults were the most common pollock age group (43.0%; n = 86) among the 254 pollock captured in March 2014 with 57.9% (n = 147) being captured off Southern Gosung, Korea. The main spawning period of pollock is February (spawning phase of 91% of pollock). From the deep-sea tank, we collected 1640 mL of naturally fertilized eggs (~820,000 eggs) from 12 spawning events occurring between February 4 and 22 2015. The floating/ live eggs were maintained in deep-sea water tanks at $5.5{\pm}0.2^{\circ}C$. Egg size was $1.5{\pm}0.03mm$. Six hours after fertilization the eggs were at the 2 cell stage, and the eggs hatched approximately 340 hours after collection. At hatching, larval length and yolk sac area were $5.2{\pm}0.25mm$ and $9.5{\pm}1.00mm^2$ (100%), respectively. Four days after hatching, the yolk sac area was $2.2{\pm}0.53mm^2$ ($23.1{\pm}5.55%$). This is the first report of collection of naturally fertilized eggs from pollock and their subsequent hatching while held in an indoor deep-sea water tank. The results suggest that such collection could assist in the recovery of pollock resources and the possibility of domestic rearing of cultivated larvae.
We collected and reared Theragra chalcogramma walleye pollock brood-stock for use in natural spawning tests and undertook to obtain domestic pollock via fertilized egg capture, development of fertilized eggs, and absorption of yolk sac after hatching. Whole pollock were caught with trammel and set nets and immediately placed in a deep-sea water tank. Adults were the most common pollock age group (43.0%; n = 86) among the 254 pollock captured in March 2014 with 57.9% (n = 147) being captured off Southern Gosung, Korea. The main spawning period of pollock is February (spawning phase of 91% of pollock). From the deep-sea tank, we collected 1640 mL of naturally fertilized eggs (~820,000 eggs) from 12 spawning events occurring between February 4 and 22 2015. The floating/ live eggs were maintained in deep-sea water tanks at $5.5{\pm}0.2^{\circ}C$. Egg size was $1.5{\pm}0.03mm$. Six hours after fertilization the eggs were at the 2 cell stage, and the eggs hatched approximately 340 hours after collection. At hatching, larval length and yolk sac area were $5.2{\pm}0.25mm$ and $9.5{\pm}1.00mm^2$ (100%), respectively. Four days after hatching, the yolk sac area was $2.2{\pm}0.53mm^2$ ($23.1{\pm}5.55%$). This is the first report of collection of naturally fertilized eggs from pollock and their subsequent hatching while held in an indoor deep-sea water tank. The results suggest that such collection could assist in the recovery of pollock resources and the possibility of domestic rearing of cultivated larvae.
* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.
제안 방법
For the first time in Korea, this paper has examined the pollock’s egg collection process through the naturally spawning for the pollock which were caught in Feb 2013 ~ Jan 2014 and bred at the Fisheries Resource Center for Deep-sea Water of Gangwon province. Also the purposes of this study were confirmed the informations of the domestic pollock capture, development of fertilized eggs and absorption of yolk sac after hatching eggs on the seedlings.
대상 데이터
For the first time in Korea, this paper has examined the pollock’s egg collection process through the naturally spawning for the pollock which were caught in Feb 2013 ~ Jan 2014 and bred at the Fisheries Resource Center for Deep-sea Water of Gangwon province.
The adult fish for the natural spawning were selected from Korean pollock caught during the period February 2014 - January 2015 in Goseong and Donghae, Gangwon Province. The fish were caught using stationary nets and gill nets and transferred live to the Fisheries Resource Center for Deep-Sea Water in Gangwon Province.
The fertilized eggs were transferred to the Marine Biology Center for Research and Education at Gangneung-Wonju National University, the East Sea Fisheries Research Institute of the National Fisheries Research Development Institute, and the Fisheries Resource Center for Deep-Sea Water in Gangwon Province.
The adult fish for the natural spawning were selected from Korean pollock caught during the period February 2014 - January 2015 in Goseong and Donghae, Gangwon Province. The fish were caught using stationary nets and gill nets and transferred live to the Fisheries Resource Center for Deep-Sea Water in Gangwon Province. We used three in dividuals that were caught in 2014 (two males, one female; 45-60 cm total length [TL] ; 450 - 600 g body weight [BW]) and one individual that was captured in January 2015 (female; 55 cm TL; 650 g BW).
The breeding tank was 6 m in diameter and 2 m depth, and was filled with deep-seawater (2-5°C). Their fish were fed squid Todarodes pacificus and sand lance Ammodytes personatus that were cut into pieces. A net (40 natural mesh size 300 μm) was installed in January 2015 at the drain outlet of the breeding tank to collect eggs following spawning (Fig.
참고문헌 (18)
FAO. "The status of world fisheries and aquaculture" p 223, Rome, Italy. 2014.
K. M. Bailey, "An empty donut hole: the great collapse of a North American fishery", Fisheries Society, vol. 16, no. 2, article 28, 2011.
S. Kang, J. H. Park, S. Kim, "Size-class estimation of the number of walleye pollock Theragra chalcogramma caught in the southwestern East Sea during the 1970s-1990s", Korean Journal of Fisheries Aquatic Science, vol. 46, pp. 445-453, 2013. DOI : http://dx.doi.org/10.5657/KFAS.2013.0445
W. S. Kim, S. H. Huh, "Meristic and morphometric observation on Nogari and Alaska pollock", Journal of the Oceanological Society of Korean, vol. 13, pp. 26-30, 1978.
East sea Fisheries Research Institute (EFRI). "Report of the oceanographic observation and fishing condition in the East Sea of Korea in winter", 2000. p. 58, East Sea Regional FRI Oceanography and Marine Fisheries Resources News 32., Gangneung, Republic of Korea. 2000.
Y. Lee, D. Y. Kim, "Measuring surface water temperature effects on the walleye pollock fishery production using a translog cost function approach", Environmental and Resource Economics Review, vol. 19, pp. 897-914, 2010.
C, Loots, S. Vaz, B. Planque, P. Koubbi. "Understanding what controls the spawning distribution of North Sea whiting (Merlangius merlangus) using a multi-model approach" Fisheries Oceanography, vol. 20, no. 1, 18-31, 2011. DOI: http://dx.doi.org/10.1111/j.1365-2419.2010.00564.x
I. R. G. Hislop, A. P. Robb, J. A. Auld, "Observations on effects of feeding level on growth and reproduction in had dock. Melunogrummus ueglefinus (L.) in captivity", Journal of Fish Biology, vol. 13, pp. 85-98, 1978. DOI: https://doi.org/10.1111/j.1095-8649.1978.tb03416.x
R. S. McBride, P. E. Thurman, "Reproductive biology of Hemiramphus brasiliensis and H. balao (Hemiramphidae): Maturation, spawning frequency, and fecundity", Biology Bulletin, vol. 204, pp. 57-67, 2003. DOI: https://doi.org/10.2307/1543496
K. Ganias, "Ephemeral spawning aggregations in the Mediterranea sardine, Sardina pilchardus: a comparison with other multiple-spawning clupeoids" Marine Biology, Vol, 155, pp. 293-301, 2008. DOI: http://dx.doi.org/10.？1007/？s00227-008-1027-7
T. Takita, T. Iwami, S. Kai, I. Sogabe, "Maturation and spawning of the dragonet, Cullionymus enneuctis. in an aquarium", Japanes Journal of Ichthyology, vol. 30, pp. 221-226, 1983.
J. R. Hunter, B. J. Macewicz, "Measurement of spawning frequency in multiple spawning fishes. In: An egg production method for estimating spawning biomass of pelagic fish: application to the northern anchovy (Engraulis mordax)",R. Lasker, ed. U.S. Department of Commerce, National Oceanic and Atmospheric Administration Technical Report National Marine Fisheries Service, Washington DC, U.S.A. vol. 36, pp. 79-94, 1985.
J. R. Hunter, R. Leong, "The spawning energetics of female northern anchovy, Engruulis mordar", Fishery Bulletin, vol. 79, pp. 215-230, 1981.
D. M. Blood, A. C. Matarese, M. M. Yoklavich, "Embryonic development of walleye pollock, Theragra chalcogramma, from Shelikof Strait, Gulf of Alaska", Fishery Bulletin, vol. 92, pp. 207-222, 1994.
T. Nakatani, T. Maeda, "Thermal effect on the development of walleye pollock eggs and their upward speed to the surface", Bulletin of Japanese Society of Scientific Fisheries, vol. 50, pp. 937-942, 1984. DOI: https://doi.org/10.2331/suisan.50.937
I. Yabe, A. Kusaka, T. Hamatsu, T. Azumaya, A. Nishimura, Water mass structure in the spawning area of walleye pollock (Theragra chalcogramma) on the Pacific coast of Southern Hokkaido, Japan, Bulletin of the Japanese Society of Fisheries Oceanography, vol. 75, no. 4, pp 211-220, 2011.
T. I. Smark, J. T. Duffy-Anderson, J. K. Horme, E. V. Farley, C. D. Wilson, J. M. Napp, Influence of environment on walleye pollock eggs, larvae, and juveniles in the Southeastern Bering Sea, Deep-Sea Research II, Vol, 65-70, pp. 196-207, 2012
J. P. Stahl, "Maturation of walleye pollock, Theragra chalcogramma, in the eastern Bering sea in relation to temporal and spatial factors", Master thesis, University of Alaska Fairbanks, U.S.A. 2005.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.