In vivo Effects of a Recombinant Molt-Inhibiting Hormone on Molt Interval and Hemolymph Ecdysteroid Level in the Kuruma Prawn, Marsupenaeus japonicus
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Accession number;05A0407491
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| Title;In vivo Effects of a Recombinant Molt-Inhibiting Hormone on Molt Interval and Hemolymph Ecdysteroid Level in the Kuruma Prawn, Marsupenaeus japonicus |
| Author;
OKUMURA TAKUJI
(Fisheries Res. Agency, Mie, Jpn)
OHIRA TSUYOSHI
(Tokyo Univ. Marine Sci. And Technol., Tokyo, Jpn)
KATAYAMA HIDEKAZU
(Univ. Tokyo, Tokyo, Jpn)
NAGASAWA HIROMICHI
(Univ. Tokyo, Tokyo, Jpn)
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Journal Title;Zool Sci
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Journal Code:F0012B
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ISSN:0289-0003
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VOL.22;NO.3;PAGE.317-320(2005)
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| Figure&Table&Reference;FIG.2, REF.19 |
| Pub. Country;Japan |
| Language;English |
| Abstract;In order to determine the function of molt-inhibiting hormone (MIH) in vivo, we examined the effects of injecting of a recombinant MIH on the molt interval and hemolymph ecdysteroid level in the kuruma prawn, Marsupenaeus japonicus. The injection of recombinant MIH significantly prolonged the molt interval (9.0 .+-.0.4 days in the control group, 9.5 .+-.0.5 days in the 2500 ng/g-body weight/injection-group, meanSD), and significantly decreased the hemolymph ecdysteroid level (ratio of levels between after and before injection: 1.94 .+-.1.09 in the control and 1.28 .+-.0.39 in the 3000 ng/g-body weight/injection-group, mean .+-.SD). These results conclusively show the inhibitory effects of MIH on molting in vivo. (author abst.) |
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