Browse > Article

Tolerance Capacity to Salinity Changes in Adult and Larva of Oryzias dancena, a Euryhaline Medaka  

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. 9-16 More about this Journal
Abstract
Osmoregulatory capabilities of a euryhaline medaka, Oryzias dancena (Beloniformes; Teleostei), was examined with a particular emphasis on adult and larval viability during direct salinity changes. O. dancena adults were highly capable for hyper-osmoregulation as well as hypo-osmoregulation, as evidenced by no adverse effect on their viability during the direct transfer either from complete freshwater ($0^{\circ}/_{\circ\circ}$) to $40^{\circ}/_{\circ\circ}$ salinity, or from $70^{\circ}/_{\circ\circ}$ to $0^{\circ}/_{\circ\circ}$. Furthermore, the phased increase of external salinity with acclimation periods allowed them to survive at a salinity as high as $75^{\circ}/_{\circ\circ}$. However, tolerant capability to acute salinity increase in early larval stage was much less than in adult stage, based on the finding that the tolerance range of salinity increase was only $15^{\circ}/_{\circ\circ}$ from freshwater, indicating that the hyper-osmoregulation system might not be fully developed in the early larval stage. On the contrary, the hypoosmoregulation system could be more solidified in O. dancena larvae, as evidenced by their good survival even after direct transfer from $45^{\circ}/_{\circ\circ}$ to $0^{\circ}/_{\circ\circ}$. Knowledge achieved in this study could form the basis for a wide scope of researches including ecotoxicogenomics and geneexpression assay using this model species.
Keywords
Salinity tolerance; viability; osmoregulation; marine medaka; Oryzias dancena;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Sakamoto, T., T. Kozaka, A. Takahashi, H. Kawauchi and M. Ando. 2001. Medaka (Oryzias latipes) as a model for hypoosmoregulation of euryhaline fishes. Aquaculture, 193: 347-354.   DOI
2 Takei, Y. 2008. Exploring novel hormones essential for seawater adaptation in teleost fish. Gen. Comp. Endocrinol., 157: 3-13.   DOI   ScienceOn
3 Wittbrodt, J., A. Shima and M. Schartl. 2002. Medaka-a model organism from the far East. Nat. Rev. Genet., 3: 53-64   DOI
4 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.
5 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
6 Kultz, D., D. Fiol, N. Valkova, S. Gomez-Jimenez, S.Y. Chan and J. Lee. 2007. Functional genomics and proteomics of the cellular stress response in 'non-model' organisms. J. Exp. Biol., 210: 1593-1601.   DOI   ScienceOn
7 Lin, Y.M., C.N. Chen, T. Yoshinaga, S.C. Tsai, I.D. Shen and T.H. Lee. 2006. Short-term effects of hyposmotic shock on $Na^+/K^+$-ATPase expression in gills of the euryhaline milkfish, Chanos chanos. Comp. Biochem. Physiol., 143A: 406-415.
8 Kang, C.K., S.C. Tsai, T.H. Lee and P.P. Hwang. 2008. Differential expression of branchial $Na^+/K^+$-ATPase of two medaka species, Oryzias latipes and Oryzias dancena, with different salinity tolerances acclimated to fresh water, brackish water and seawater. Comp. Biochem. Physiol., Part 151A: 566-575.   DOI   ScienceOn
9 Kato, A., H. Doi, T. Nakada, H. Sakai and S. Hirose. 2005. Takifugu obscurus is a euryhaline fugu species very close to Takifugu rubripes and suitable for studying osmoregulation. BMC Physiol., 5: 18.   DOI
10 Kong, R.Y.C., J.P. Giesy, R.S.S. Wu, EXH. 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
11 Inoue, K. and Y. Takei. 2003. Asian medaka fishes offer new models for studying mechanisms of seawater adaptation. Comp. Biochem, Physiol., 136B: 635-645.
12 Fiol, D.F. and D. Kultz. 2007. Osmotic stress sensing and signaling in fishes. FEBS J., 274: 5790-5798.   DOI   ScienceOn
13 Inoue, K. and Y. Takei. 2002. Diverse adaptability in Oryzias species to high environmental salinity. Zool, Sci., 19: 727-734.   DOI   ScienceOn
14 Evans, TG. and G.N. Somero.2008. A microarray-based transcriptomic time-course of hyper-and hypo-osmotic stress signaling eventsin the euryhaline fish Gillichthys mirabilis: osmosensors to effctors. J. Exp. Biol., 211: 3636-3649.   DOI   ScienceOn
15 송하연. 남윤권. 방인철. 김동수. 2009a. 해산 송사리 Oryzias dancena의 초기 생식소 형성 및 성분화. 한국어류학회지, 21: 141-148.
16 송하연. 남윤권. 방인철. 김동수. 2009b. 바다 송사리 Oryzias dancena의 난발생 및 자치어의 형태 발달. 한국어류학회지, 21: 227-238.