open access
메뉴
open access
메뉴
ISSN : 1225-3480
Gonad development, the reproductive cycle, first sexual maturty and size at 50% of group sexual maturity (the biological minimum size) of Gomphina (Macridiscus) veneriformis were investigated for clams collected from the coastal waters of Donghae City, the East Sea of Korea by histological, and morphometric analysis. Monthly variations of the gonad index showed a pattern similar to that of the reproductive cycle. The reproductive cycle with the gonad developmental stages in female and male G. (M.) veneriformis can be classified into five successive stages: early active stage (December to March), late active stage (March to June), ripe stage (June to July), partially spawned stage (June to August), and spent / inactive stage (September to December). The spawning period continued from June to August, with a peak between July and August when the seawater temperature exceeds 20°C. The percentages of first sexual maturities of female and male clams ranging from 25.1 to 30.0 mm were 56.3% in females and 61.1% in males, and for clams over 30.1 mm shell length, it was 100%. Shell lengths at 50% of group sexual maturity (biological minimum size, RM50) were 27.71 mm in females and 26.31 mm in males. Because harvesting clams < 26.31 mm in shell length could potentially cause a drastic reduction in recruitment, a measure indicating a prohibitory fishing size should be taken for adequate fisheries management.
Anderson, G.J. (1982) Comments on the settlement of Manila clam spats (Tapes philippinaum) at Filucy Bay. Washington, USA. Journal of Shellfish Research, 2: 115.
Boolootian, R., Farmanfarmaiana and Giese, A.C. (1962) On the reproductive cycle and breeding habits of two western species of Haliotis. Biological Bulletin, 122: 183-192.
Chung, E.Y. (2007) Oogenesis and sexual maturation in Meretrix lusoria (Röding, 1798) (Bivalvia: Veneridae) in western Korea. Journal of Shellfish Research, 26: 71-80.
Chung, E.Y., Ryou, D.K and Lee, J.H. (1994) Gonadal development, age and growth of the shortnecked clam, Ruditapes philippinarum (Pelecypoda: Veneridae), on the coast of Kimje, Korea on the west coast of Korea. The Korean Journal of Malacology, 3: 125-136. (in Korean)
Chung, E.Y., Chung, C.H., Kim, J.H., Park, S.W. and Park, K.H. (2010) Ultrastructures of germ cells and the accessory cells during spermatogenesis in male Gomphina veneriformis (Bivalvia: Veneridae) on the East Sea of Korea. The Korean Journal of Malacology, 26: 51-62.
Fretter, V. (1984) Prosobranchs. pp.1-45. In: Laar, eds., The Mollusca. Vol. 7, Academic Press, New York 352 pp.
Hwang, K.Y. and Hwang, Y.T. (1981) Studies on the age and growth of the Gomphina (Macridiscus) melanaegis (Roemer) in the eastern waters of Korea. Bulletin of Fisheries Research & Development Agency, 27: 111-117 (in Korea).
Jung, C.H. (2011) An ecological study on the population of Gomphina (Macridiscus) veneriformis (Lamarck, 1818) on the East Sea of Korea. Ph. D. Thesis, Kunsan National University, 119 pp.
Kim, Y.M. (2005) A Study on reproductive ecology of the hard clam, Meretrix lusoria, on the west coast of Korea. Kunsan National University, Ph. D. Thesis, 123 pp.
Ko, Y. (1957) Some histological note on the gonads of Tapes japonica Deshayes. Bulletin of Japanese Society fisheries, 23: 394-399.
Kurashige, H. (1943) Seasonal variation in the weight and volume as well as the chemical composition of the soft body of Tapes philippinarum with special reference to its spawning. Bulletin of Korean Fisheries Experiment Station, 8: 115-140.
Kweon, O.K., Park, K.M. and Lee, J.S. (1993) Coloured shells of Korea. Academy Publishing Company, 368 pp.
Lee, J.J. (1976) Ecological studies for the culture of the clam, Gomphina veneriformis 1. Studies on the spawning season, artificial fertilization and egg development. Buletin of Marine Biological Station, Jeju National University, 1: 11-20.
Lee, J.Y., Park, Y.J. and Chang. Y.J. (1999) Gonadal development and reproductive cycle of Gomphina melanaegis (Bivalvia; Veneridae). Journal of Korean Fisheries Society, 32: 198-203.
Loosanoff, V.L. and Davis, H.C. (1963) Rearing of bivalve mollusks. Advance Marine Biology, Academic press, 1: 110-112.
Mann, R. 1979, Some biochemical and physiological aspects of growth and gametogenesis in Crassostrea gigas and Ostrea edulis grown at sustained elevated temperatures. Journal of Marine Biological Association U.K., 59: 95-110.
Min, D.K., Lee, J.S. .Ko, D.B. and Je, J.G. (2004) Mollusks in Korea. Hanguel Graphics, Busan, Korea 566 pp.
Momoyama, G. and Iwamoto, T. (1979) On the spawning season of the short necked clam in Yamaguch and Okai Bay. Bulletin of Yamaguchi Prefecture Fisheries Experiment Station, 7: 19-28.
Park, J.J., Lee, J.Y. Lee, J.S. and Chang, Y.J. (2003) Gonadal development and gametogenic cycle of the equilateral venus, Gomphina veneriformis (Bivalvia: Veneridae). Journal of. Korean Fisheries Society, 36: 352-357 (in Koreanis).
Park, J.J. and Lee, J.S. (2008) Tributyltin Chloride (TBTCl) Toxicity on the rgowth and mantle structure of the equilateral venus, Gomphina veneriformis (Bivalvia: Veneridae). The Korean Journal of Malacology, 24: 229-241 (in Korean).
Park, J.J. and Lee, J.S. (2010) Ultrastructural changes in digestive gland and lipofuscin accumulation of the equilateral venus, Gomphina veneriformis (Bivalvia: Veneridae) on Tributiltin Chloride (TBTCI) Toxicity. The Korean Journal of Malacology, 26: 63-78 (in Korean).
Park, J.J., Kim, S.R., Park, M.A,, and Lee, J.S. (2011) Ultra structural changes in the mantle of the equilateral venus, Gomphina veneriformis (Bivalvia, Veneridae) exposed to TBTCl. The Korean Journal of Malacology, 27: 213-221 (in Korean).
Rand, W. M., (1973) A stochastic model of the temporal aspect of breeding strategies. Journal of Theoretical Biology, 40: 337-351 (in Korean).
Sastry, A.N., 1966, Temperature effects in reproduction of the bay scallop, Aquipecten irradians Lamarck. Biological Buletin, 130: 118-134.
Sastry, A.N. (1968) Relationship among food, temperature and gonad development of the bay scallop, Aquipecten irradians Lamarck. Physiological Zoology, 41: 44-53.
Shin, H.C., Lee, J.H., Jeong, H.J., Lee, J.S., Park, J.J.and Kim, B.H. (2009) The influence of water temperature and salinity on filtration rates of the hard clam, Gomphina veneriformis (Bivalbia). The Korean Journal of Malacolology, 25: 161-171 (In Korean).
Tanaka, Y. (1954) Spawning season of important bivalves in Ariake Bay Ⅲ. Tapes philippinarum. Bulletin of Japanese Society Science Fisheries, 19: 1165-1167.