Browse > Article

Spawning Performance, Embryonic Development and Early Viability under Different Salinity Conditions in a Euryhaline Medaka Species, Oryzias dancena  

Cho, Young-Sun (Institute of Marine Living Modified Organisms (IMLMO))
Lee, Sang-Yoon (Department of Marine Bio-Materials & Aquaculture, Pukyong National University)
Kim, Dong-Soo (Department of Marine Bio-Materials & Aquaculture, Pukyong National University)
Nam, Yoon-Kwon (Department of Marine Bio-Materials & Aquaculture, Pukyong National University)
Publication Information
Korean Journal of Ichthyology / v.22, no.1, 2010 , pp. 25-33 More about this Journal
Abstract
Effects of different salinity levels on spawning performance, embryonic development and early viability of a euryhaline medaka species, Oryzias dancena, were examined. O. dancena were able to spawn eggs in a wide range of salinity from 0 to 70$^{\circ}/_{\circ\circ}$, however, the spawning frequency was lowered in complete freshwater (0$^{\circ}/_{\circ\circ}$) and in highly salted water (70$^{\circ}/_{\circ\circ}$). Fertilization success was negatively affected when the environmental salinity was higher than the salt concentration found in normal seawater. Embryonic viability and hatching success were also inversely related with the salinity levels. Typical abnormality was observed in developing embryos incubated at high salinities (30, 45 and 60$^{\circ}/_{\circ\circ}$). In addition, the time to hatch was significantly delayed with increasing salinities: peak hatching occurred at 12~14 days post fertilization (dpf) in freshwater and at least at 17 to 18 dpf in 60$^{\circ}/_{\circ\circ}$. Mean survival rates of the hatched larvae up to 7 days post hatching (dph) were at least 97% in salinity levels ranging from 0 to 30$^{\circ}/_{\circ\circ}$. However, larvae reared in 45 and 60$^{\circ}/_{\circ\circ}$ experienced significant mortality, especially in the early phase, resulting in only 75% and 64% survival rates up to 7 dph, respectively.
Keywords
Egg spawning; embryonic development; early viability; Oryzias dancena;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Takei, Y. 2008. Exploring novel hormones essential for seawater adaptation in teleost fish. Gen. Comp. Endocrinol., 157: 3-13.   DOI   ScienceOn
2 Naruse, K., A. Shima, M. Matsuda, M. Sakaizumi, T. Iwamatsu, B. Soeroto and H. Uwa. 1993. Description and phylogeny of rice fish and their relatives belonging of the suborder Adrianichthyoidei in Sulawesi, Indonesia. Fish. Biol. J. MEDAKA, 5: 11-15.
3 Roberts, T.R. 1998. Systematic observations on tropical Asian medakas or ricefishes of the genus Oryzias with descriptions of four new species. Ichthyol. Res., 45: 213-224.   DOI
4 Song, H.Y., Y.K. Nam, I.C. Bang and D.S. Kim. 2009a. Early gonadogenesis and sex differentiation of a marine medaka, Oryzias dancena (Beloniformes; Teleo stei). Korean J. Ichthyol, 21: 141-148. (in Korean)
5 Song, H.Y., Y.K. Nam, I.C, Bang and D.S. Kim. 2009b. Embryogenesis and early onteogenesis of a marine medaka, Oryzias dancena. Korean J. Ichthyol, 21: 227-238. (in Korean)
6 Au, D.W.T., H.O.L. Mok, L.W. Elmore and S.E. Holt. 2009. Japanese medaka: A new vertebrate model for studying telomere and telomerase biology. Comp. Biochem. Physiol., 149C: 161-167.
7 Yasumasu, S., S. Katow, T.S. Hamazaki, I. Iuchi and K. Yamagami. 1992. Two constituent proteases of a teleostean hatching enzyme: concurrent syntheses and packaging in the same secretory granules in discrete arrangement. Dev. Biol., 149: 349-356.   DOI   ScienceOn
8 Takehana, Y., K. Naruse and M. Sakaizumi. 2005. Molecular phylogeny of the medaka fishes genus Oryzias (Beloniformes: Adrianichthyidae) based on nuclear and mitochondrial DNA sequences. Mol. Phylogenet. Evol. 36: 417-428.   DOI   ScienceOn
9 Tomy, S., Y.M. Chang, Y.H. Chen, J.C. Cao, T.P. Wang and C.F. Chang. 2009. Salinity effects on the expression of osmoregulatory genes in the euryhaline black porgy Acanthopagrus schlegeli. Gen. Comp. Endocrinol, 161: 123-132.   DOI   ScienceOn
10 Yang, H. and T.R. Tiersch. 2009. Sperm motility initiation and duration in a euryhaline fish, medaka (Oryzias latipes). Theriogenology, 72: 386-392.   DOI   ScienceOn
11 Yu, R.M.K., M.M.L. Wong, R.Y.C. Kong, R.S.S. Wu and S.H. Cheng. 2006. Induction of hepatic choriogenin mRNA expression in male marine medaka: A highly sensitive biomarker for environmental estrogens. Aquatic Toxicol, 77: 348-358.   DOI   ScienceOn
12 Boutet, I., C.L. Long Ky and F. Bonhomme. 2006. A transcriptomic approach of salinity response in the euryhaline teleost, Dicentrarchus labrax. Gene, 379: 40-50.   DOI   ScienceOn
13 Chen, X., V.W.T. Li, R.M.K. Yu and S.H. Cheng. 2008. Choriogenin mRNA as a sensitive molecular biomarker for estrogenic chemicals in developing brackish medaka (Oryzias melastigma). Ecotoxicol. Environ. Saf., 71: 200-208.   DOI   ScienceOn
14 Chen, X., L. Li, C.K.C. Wong and S.H. Cheng. 2009. Rapid adaptation of molecular resources from zebrafish and medaka to develop an estuarine/marine model. Comp. Biochem. Physiol., 149C: 647-655.
15 Inoue, K. and Y. Takei. 2003. Asian medaka fishes offer new models for studying mechanisms of seawater adaptation. Comp. Biochem. Physiol., 136B: 635-645.
16 Cho, Y.S., S.Y Lee, D.S. Kim and Y.K. Nam. 2010. Tolerance capacity to salinity changes in adult and larva of Oryzias dancena, a euryhaline medaka species. Korean J. Ichthyol., 22: 9-16 (in press).   과학기술학회마을
17 Hobbie, K.R., A.B. DeAngelo, L.C. King, R.N. Winn and J.M. Law. 2009. Toward a molecular equivalent dose: Use of the medaka model in comparative risk assessment. Comp. Biochem. Physiol., 149C: 141-151.
18 Inoue, K. and Y. Takei. 2002. Diverse adaptability in Oryzias species to high environmental salinity. Zool. Sci., 19: 727-734.   DOI   ScienceOn
19 Kong, R.Y.C., J.P. Giesy, R.S.S. Wu, E.X.H. Chen, M.W.L. Chiang, P.L. Lim, B.B.H. Yuen, B.W.P. Yip, H.O.L. Mok and D.W.T. Au. 2008. Development of a marine fish model for studying in vivo molecular responses in ecotoxicology. Aquatic Toxicol., 86: 131-141.   DOI   ScienceOn
20 Morisawa, M. and K. Suzuki. 1980. Osmolality and potassium ion: their roles in initiation of sperm motility in teleosts. Science, 210: 1145-1147.   DOI
21 Morita, M., A. Takemura and M. Okuno. 2003. Requirement of Ca (2+) on activation of sperm motility in euryhaline tilapia Oreochromis mossambicus. J. Exp. Biol., 206: 913-921.   DOI   ScienceOn