한국 연근해 고등어(Scomber japonicus) 알의 비중과 수직분포 = Buoyancy and Vertical Distribution of Mackerel Scomber japonicus Eggs in Korean Waters

다국어 초록 (Multilingual Abstract)

This study simulated the egg vertical distribution of mackerel Scomber japonicus in Korean waters using general numerical models.
All eggs were spawned naturally by raising broodfishes (May-June 2013), and the egg specific gravity was measured by a density-gradient column. CTD surveys provided environmental data (e.g., temperature and salinity) in May near Jeju Island, Korea.
The egg specific gravity during the early stages ranged from 1.0203-1.0211. In general, the fertilized eggs showed a gradual decline in egg specific gravity until full development of the main organs, with a sudden increase just before hatching. Modeled egg vertical distributions were influenced more by wind speed than by egg buoyancy and vertical structure of the sea water. During calm and normal wind speeds, the eggs were distributed from the surface to 25-m depths. Under strong wind conditions (three times higher than the normal speed), the egg concentration on the surface decreased, and the egg distributional depth was deeper (~50 m).

참고문헌 (Reference)

1 김성, "앨퉁이 (Maurolicus muelleri) 난의 발생단계별 밀도변화" 한국어류학회 16 (16): 331-335, 2004

2 김대현, "성숙 유도한 한국산 고등어 (Scomber japonicus)의 난발생과 자치어의 형태 발달" 한국수산과학회 41 (41): 471-477, 2008

3 박충국, "고등어(Scomber japonicus)의 난발생 및 자치어 형태발달" 한국발생생물학회 12 (12): 207-213, 2008

4 황형규, "고등어 Scomber japonicus 난발생 및 자어에 미치는 수온, 염분의 영향" 한국양식학회 21 (21): 234-238, 2008

5 Tanaka Y, "Vertical distributions of Japanese sardine (Sardinops melanostictus) eggs: comparison of observations and a wind-forced Lagrangian mixing model" 17 : 89-100, 2008

6 Ådlandsvik B, "VertEgg: a toolbox for simulation of vertical distribution of fish eggs" Institute of Marine Research 2000

7 Mangor-Jensen A, "The effect of light exposure on buoyancy of halibut eggs" 47 : 18-25, 1995

8 Hiyama Y, "Stock size fluctuations in chub mackerel (Scomber japonicus) in the East China Sea and the Japan⁄East Sea" 11 : 347-353, 2002

9 Choi YM, "Stock assessment and management implications of chub mackerel, Scomber japonicus in Korean waters" Pukyong national university 2003

10 Anderson J, "Stage-dependent density of cod eggs and larvae (Gadus morhua L.) in Newfoundland waters" 198 : 654-665, 1994

11 Coombs SH, "Seasonal and ontogenetic changes in the vertical distribution of eggs and larvae of mackerel (Scomber scombrus L.) and horse mackerel (Trachurus trachurus L.)" 50 : 27-40, 2001

12 Myksvoll MS, "Retention of coastal cod eggs in a fjord caused by interactions between egg buoyancy and circulation pattern" 3 : 279-294, 2011

13 R Development Core Team, "R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0"

14 Watanabe T, "Morphology and ecology of early stages of life in Japanese common mackerel, Scomber japonicus Houttuyn, with special reference to fluctuation of population" 62 : 1-283, 1970

15 KMA, "Monthly report of marine data" Korea meteorological administration 2013

16 Parada C, "Modelling the effect of buoyancy on the transport of anchovy (Engraulis capensis) eggs from spawning to nursery grounds in the southern Benguela: an IBM approach" 12 : 170-184, 2003

17 Myksvoll MS, "Modelling dispersal of eggs and quantifying connectivity among Norwegian coastal cod subpopulations" 2013

18 Cha HK, "Maturation and spawning of the chub Mackerel, Scomber japonicus Houttuyn in Korean waters" 5 : 24-33, 2002

19 Kim JY, "Long-term variations in population biomass of mackerel, Scomber japonicus and environmental factors in Korean waters" 2 : 92-100, 1999

20 "KODC (Korea Oceanographic Data Center)"

21 Sundby S, "Interaction between Cape hake spawning and the circulation in the Northern Benguela upwelling ecosystem" 23 : 317-336, 2001

22 Hirshfield MF, "Genetic differences in physiological tolerances of Amargosa pupfish (Cyprinodon nevadensis) populations" 207 : 999-1001, 1980

23 Yamada U, "Fishes and fisheries of the East China and Yellow Seas" Tokai University Press 2007

24 Sundby S, "Factors affecting the vertical distribution of eggs" 192 : 33-38, 1991

25 Jung KM, "Egg buoyancy variability in local populations of Atlantic cod (Gadus morhua)" 159 : 1969-1980, 2012

26 Nissling A, "Effects of temperature on egg and larval survival of cod (Gadus morhua) and sprat (Sprattus sprattus) in the Baltic Sea – implications for stock development" 514 : 115-123, 2004

27 NFRDI, "Ecology and fishing grounds for some major fish in Korean waters" NFRDI 2010

28 Hunter JR, "Early life history of Pacific mackerel, Scomber japonicus" 78 : 89-101, 1980

29 Kramer D, "Development of eggs and larvae of Pacific mackerel and distribution and abundance of larvae 1952–1956" 174 : 393-438, 1960

30 Ospina-Álvarez A, "Changes in egg buoyancy during development and its effects on the vertical distribution of anchovy eggs" 117-118 : 86-95, 2012

31 Kendall AW, "Buoyancy of walleye pollock (Theragra chalcogramma) eggs in relation to water properties and movement in Shelikof Strait, Gulf of Alaska" 108 : 169-180, 1989

32 Sundby S, "A one-dimensional model for the vertical distribution of pelagic fish eggs in the mixed layer" 30 : 645-661, 1983

33 Coombs SH, "A density-gradient column for determining the specific gravity of fish eggs, with particular reference to eggs of the mackerel Scomber scombrus" 63 : 101-106, 1981