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北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University >
第69巻 第1号 >

Quantitative Changes of Major Yolk Protein in the Coelomic Fluid and Gonads of the Sea Urchin, Mesocentrotus nudus, during the Reproductive Cycle

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Please use this identifier to cite or link to this item:http://doi.org/10.14943/bull.fish.69.1.29

Title: Quantitative Changes of Major Yolk Protein in the Coelomic Fluid and Gonads of the Sea Urchin, Mesocentrotus nudus, during the Reproductive Cycle
Authors: Ura, Kazuhiro Browse this author →KAKEN DB
Suzuki, Natsuki Browse this author
Takei, Narumi Browse this author
Higuchi, Ichiro Browse this author
Yuhi, Tomoharu Browse this author
Nishimiya, Osamu Browse this author
Takagi, Yasuaki Browse this author →KAKEN DB
Keywords: Sea urchin
Mesocentrotus nudus
Major yolk protein
Coelomic fluid
Gonad
Reproductive cycle
Issue Date: 7-Aug-2019
Publisher: 北海道大学大学院水産科学研究院
Journal Title: 北海道大学水産科学研究彙報
Journal Title(alt): Bulletin of Fisheries Sciences, Hokkaido University
Volume: 69
Issue: 1
Start Page: 29
End Page: 36
Abstract: Both female and male sea urchins accumulate the major yolk protein (MYP) in the nutritive phagocytes of immature gonads before gametogenesis. Additionally, the most abundant protein in the coelomic fluids of both sexes is MYP. In females, MYP in the coelomic fluid is taken up by the nutritive phagocytes and then transported into growing oocytes. In this study, quantitative changes of MYP in the coelomic fluid of both sexes were examined during the reproductive cycle of the wild sea urchin, Mesocentrotus nudus. In females but not males, positive correlation between MYP level and the gonadosomatic index was observed. These results indicate that MYP in the coelomic fluid is suitable as a biomarker of the onset of puberty and progression of maturity in female sea urchins.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/75196
Appears in Collections:北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第69巻 第1号

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