바로가기메뉴

본문 바로가기 주메뉴 바로가기
 

logo

메뉴

Reproductive Ecology of the Freshwater Melania Snail, Semisulcospira coreana (v. Martens) in Bukhan River

Abstract

To clarify reproductive ecology of the melania snail Semisulcospira coreana (v. Martens, 1886) in Bukhan River, gonad development, fatness, gonad index, sex ratio, first sexual maturity of population, monthly change of larvae number and developmental stages in brood pouches were investigated by six identification methods. As maturation progrsses, the sex of the snali can be distinguishable easily by color:: the ovary being blue-green and testis light yellow. The sex ratio of female to male individuals over 13.95 mm shell height was significantly different from 1:1 (${\chi}^2$ = 38.45, p < 0.05). The sex ratio of female to male individuals changed drastically according to the season, Based on the monthly variations of fatness, gonad index and histological analysis, spawning occurred twice a year (spring and autumn) and the mean size of matured eggs was $450{\mu}m$ in diameter. The monthly change of larval number in brood pouch showed also two distinct peaks in March and September during the year. The average number of larvae in brood pouches was 286 - 862 individuals. In this study, the number of larvae in the brood pouches were a minimum in December and a maximum in March (975 larvae). The biological minimum size (the size at 50% of group sexual maturity) of the melania snail was 13.95 mm in shell height in females and males. All females over 15 mm in shell height possesed brood pouches.

keywords
Reproductive ecology, Melania snail, Brood pouch, Semisulcospira coreana

Reference

1.

(1962). On the reproductive cycle and breeding habits of two western species of Haliotis. Biological Bulletin, 122, 183-193. 10.2307/1539587.

2.

Reproductive cycle and parturition induction in three species of the Pleuroceridae.

3.

(2000). Reproductive cycle of melania snail, Semisulcospira libertina libertina. Dev. Reprod., 4, 175-180.

4.

(2001). Relative growth of the melania snail, Semisulcospira libertina libertina and monthly composition of larval stages in its brood pouch. J, Korean Fish Soc., 34(2), 131-136.

5.

(1994). Gonadal development, age and growth of the shortnecked clam, Ruditapes philippinarum (Pelecypod: Venerida), on the coast of Kimje, Korea. Korean journal of Malacology, 10, 38-54.

6.

(1969). A taxonomic study of some species of Smisulcospira in Japan. Malacologia, 7, 211-294.

7.

(1997). Gametogenesis of Mercennaria mercennaria, M. cappechiensis and their hybrids. Mautilus, 110, 107-110.

8.

(1978). Ecological study on the freshwater snail Semisulcospira libertina (Gould, 1959). Jap. J. Malac. (Venus), 37, 77-82.

9.

(1977). Studies on the growth of hard clam, Meretrix lusoria. Bulletin of Fisheries Research and Development Agency, 17, 77-85.

10.

(2007). Reproductive ecology of the bladder moon, Glossaulax didyma (Gastropoda: Naticidae) in western Korea. Korean journal of Malacology, 23(2), 189-198.

11.

(2004). Ultrastructural study on the germ cell differentiation of the melania snail, Semisulcospira libertina (Prosobranchia: Pleuroceridae). Master Thesis, Yosu National University, 20(1), 9-15.

12.

(2009). Bioogical activities of seven melania snails in Korea. Kor. J. Fish Sci., 42(5), 434-441.

13.

(1985). Studies on the nutritive component of black snail, Semisulcospira libertina. Collection of Thesis, Chonbuk Nat. Uni., 16, 101-105.

14.

(1992). Seasonal changes in gametogenesis and embryocomposition in the brood pouch of Semisulcospira libertina. Venus, 51, 279-294.

15.

Illustrated encyclopedia of fauna & flora of Korea. Mollusca (I).

16.

(2007). Reproductive ecology of the hard shelled mussel, Mytilus coruscus in western Korea. Korean journal of Malacology, 23(2), 199-208.

17.

(2003). Effect of Calcium Lactate Prepared from Black Snail on Dough Fermentation, Quality and Shelf-life of Bread. J. East Asian Soc. Dietary Life, 13(2), 136-144.

18.

(2010). Antioxidant activities of five melania snails of the genus Semisulcospira in Korea. KOR. J. Fish Aquat. Sci., 43(3), 188-194.

19.

(2004). Quality Characteristics of calcium acetate prepared with vinegars and ash of black snail. J. Korean Soc. Food Sci. Nutr., 33(3), 593-597. 10.3746/jkfn.2004.33.3.593.

20.

Growth and maturation of shortnecked clam Ruditapes philippinarum by different seeding production areas.

21.

Lim, Chi-Won;Kim, Yeon-Kye;Kim, Dae-Hee;Park, Jin-Il;Lee, Moon-Hee;Park, Hee-Yeon;Jang, Mi-Soon;. (2009). Comparison of Quality Characteristics of Melania snails in Korea. Korean Journal of Fisheries and Aquatic Sciences, 42(6), 555-560. 10.5657/kfas.2009.42.6.555.

22.

(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 of U.K., 59, 95-110. 10.1017/S0025315400046208.

23.

(1979). On the spawning period in Yamaguchi and Oumi Bay. Yamagruchi Prefecture Naigai Ocean Center, 7, 19-34.

24.

(1979). Rearing and population growth of fresh water snail, Semisulcospira libertina in the laboratory. Venus, 38, 25-34.

25.

(1990). A method of embryo culture and an outline of development of the ovoviviparous freshwater snail, Semisulcospira libertina (Prosovranchia: Pleuroceridae). Venus, 49, 107-119.

26.

(1996). Reproductive biology of Semisulcospira libertina (Prosobranchia: Pleuroceridae) in Iga Basin, Mie Prefecture. Venus, 55, 235-241.

27.

(1989). Anatomical and histological studies on the reproductive system of Semisulcospira libertina (Prosobranchia: Pleuroceridae). Venus, 48, 263-273.

28.

(2005). On the reproductive anatomy of Semisulcospira (Cerithioidea: Pleuroceridae; Semisulcospirinae). Bull. Russ. East Malacol. Society, 9, 123-126.

29.

(1994). Composition of lepid and amino acid in Semisulcospira gottschei tissues. J. Fd Hyg. Safety, 9(2), 81-87.

30.

(1995). Growth and number of newborns in Semisulcospira kurodai (Prosobranchia: Pleuroceridae) reared in the laboratory. Venus, 54, 123-132.

logo