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Simplex PCR assay for positive identification of genetic sex in the Japanese Medaka, Oryzias latipes
Patil, J.G.; Hinze, S.J. (2008). Simplex PCR assay for positive identification of genetic sex in the Japanese Medaka, Oryzias latipes. Mar. Biotechnol. 10(6): 641-644
In: Marine Biotechnology. Springer-Verlag: New York. ISSN 1436-2228, more
Peer reviewed article

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Keywords
    Sex determination; Oryzias latipes (Temminck & Schlegel, 1846) [WoRMS]; Marine

Authors  Top 
  • Patil, J.G.
  • Hinze, S.J.

Abstract
    The medaka, Oryzias latipes, is a very popular model in biomedical research, particularly for elucidating sex differentiation and determination mechanisms and effects of endocrine disruptors among others. These studies require a sensitive, accurate, rapid, and reliable technique for genetic sexing of eggs, larvae, and adults. In this study, we report a simplex polymerase chain reaction approach that uses a single pair of primers for simultaneous amplification of sex-specific amplicons. Males and females yield a single diagnostic band of 933 and 1,906 bp, respectively, in three different strains of medaka tested, permitting gender identification accurately of both immature and adult fish. This technique will be useful in both ecological and biomedical researches that employ medaka and rely on genetic sexing.

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