가온사육에 의한 새꼬막, Scapharca subcrenata의 성 성숙 및 난 발생 = Effect of Heating on the Sex Maturation and Egg Development of the Ark Shell, Scapharca Subcrenata

국문 초록 (Abstract)

인위적인 가온만으로도 새꼬막의 성숙 및 정상적인 난 발생이 이루어지는지 알아보기 위해 생존율, 성비, 비만도, 생식소발달빈도, 생식소지수, 수정률, 부화율 및 D형 유생까지의 발생소요시간을 조사하였다. 생존율은 대조구에 비해 가온구에서 낮았으며, 성비는 암컷의 비율이 높았다. 비만도는 대조구와 가온구가 유의한 차이를 보이는 가운데 수온 17℃ 이상부터 증가폭이 높게 나타났다. 생식소발달빈도는 암․수 모두 대조구의 경우 발달이 느렸으며, 가온구는 수온 20℃인 사육 21일부터 28일 사이에 성숙기에 도달한 개체들이 80%이상 관찰되었다. 생식소지수는 대조구에 비해 수온이 높을수록 증가하는 경향을 보였다. 새꼬막의 수정률은 82.17 ± 3.55% 였으며, 부화율은 63.57 ± 2.36%로 나타났다. D형 유생의 발생소요시간은 약 15시간으로 나타났다.

다국어 초록 (Multilingual Abstract)

The investigated of survival rate, sex ratio, condition index, gonad development frequency, gonad index, fertilization rate, hatching rate and time required development of D shape larvae of the ark shell, Scapharca subcrenata. Survival rate was lower in heating group compared with control group(P < 0.05). Sex ratio(female:male) observed 1:0.97 in control group, 1:0.62 in heating group. Condition index was significantly higher in heating group than control group(P < 0.05) and higher increased more than water temperature 17℃ of heating group. Gonad development observed slow in control group but more than ripe stage 80% in heating group(21-28 day, 20℃). Gonad index was higher in heating group compared with control group(P < 0.05). Fertilization rate and hatching rate of the ark shell was observed 82.17 ± 3.55% and 63.57 ± 2.36%, respectively. The time required development of D shape larvae of the ark shell was observed 15 hour after fertilization. The suggested that results of the ark shell by heating were effective sex maturation and normal egg development.

참고문헌 (Reference)

1 위종환, "홍합, Mytilus coruscus의 성 성숙과 생식주기" 한국양식학회 16 (16): 245-251, 2003

2 김성연, "여자만 새꼬막 Scapharca subcrenata의 생식소 발달과 생식주기" 한국양식학회 21 (21): 252-258, 2008

3 임종윤, "순천만과 보성만의 새고막 Anadara subcrenata의 채묘와 성장 비교" 한국수산과학회 43 (43): 223-230, 2010

4 Park, J.J., "gonadal development and gametogenic cycle of the equilateral venus, Gomphina veneriformis (Bivalvia:Veneridae)" 36 : 213-218, 2003

5 Kinne, O., "The effects of temperature and salinity on marine and brackish water animals. II. Salinity and temperature-salinity combinations. Oceanography and Marine Biology" 2 : 281-339, 1964

6 Nakamura, Y., "Suspension feeding of the ark shell, Scapharca subcrenata as a function of environmental and biological variables" 71 : 875-883, 2005

7 Lee, J.H., "Studies on the gonadal development and gametogenesis of the granulated ark, Tegillarca granosa (Linne)" 13 : 55-64, 1997

8 Nakanishi, I., "Studies of the effect of the environment on the heart rate of shellfishes. I. Effect of temperature salinity and hypoxia on the heart rate of scallops" 42 : 65-73, 1977

9 Moon, T.S., "Spawning inducement, egg development and early larval rearing of ark shell, Tegillarca granosa" 37 : 485-491, 2004

10 Fang, J., "Preliminary studies on the effects of pH and ammonia on growth and survival to Scapharca subcrenata juveniles" 27 : 281-285, 2008

11 Boolootian, R.A., "On the reproductive cycle and breeding habits of two western species of Haliotis" 122 : 183-193, 1962

12 Wang, H., "On technique for industrial seed-rearing of Arca granosa" 14 : 13-15, 1997

13 Zheng, Y., "On promoting maturity of ark shell by controlling water temperature" 11 : 7-9, 1994

14 Kwon, O.K., "Korean mollusks with color illustration" Hanguel Press 332-, 2001

15 Lee, J.H., "Histological studies on the gametogenesis and reproductive cycle of the hard clam, Tegillarca granosa (Linne)" 13 : 131-141, 1997

16 Chung, E.Y., "Histological and ultrastructural studies on gonadal development and germ cell development of the purplish Washington clam, Saxidomus purpurats (Sowerby)" Kunsan National University 6 : 1-15, 1994

17 이정식, "Germ Cell Aspiration (GCA) Method as a Non-fatal Technique for Sex Identification in Two Bivalves (Gomphina veneriformis and Tegillaca granosa)" 한국발생생물학회 14 (14): 7-11, 2010

18 Eversole, A.G., "Gametogenesis of Mercernaria mercenaria, M. campechiensis and their hybrids" 110 : 107-110, 1997

19 Chung, E.Y., "Gametogenesis and sexual maturation of the surf clam, Mactra venerifomis on the west coast of Korea" 42 : 149-163, 2000

20 MIFAFF (Ministry of Food, Agriculture, Forestry and Fisheries), "Food, Agriculture" Forestry and Fisheries Statistical Yearbook 301-302, 2008

21 Yoo, S.K., "Food and growth of the larvae of certain important bivalves" 9 : 65-87, 1969

22 Shin, Y.K., "Effects of the dissolved oxygen consumption on the physiology of Tegillarca granosa (Linnaeus)" 35 : 485-489, 2002

23 Shi, XY., "Effects of salinity on growth and survival in juvenile clam Scapharca subcrenata" 26 : 554-556, 2007

24 Kim, C.W., "Distribution of bivalve larvae in Deukryang bay" 19 : 288-298, 2006

25 Ito, H., "Developments in aquaculture and fisheries science. Vol. 21. In: Scallops: Biology, Ecology and Aquaculture" Elsevier 517-569, 1991

26 Drury, R.A.B., "Carleton's Histological Technique" Oxford University Press 520-, 1980

27 Lee, N.J., "Annual reproductive cycle and spawning induction of the cockle shell, Anadara granosa bisenensis" Pukyong National University 1998

28 Lee, J.H., "A study on sexual matruation of the ark shell, Scapharca subcrenata (Lischke)" 14 : 91-102, 1998