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    Profiles of progesterone- and estradiol-like substances in the hemolymph of female Pandalus kessleri during an annual reproductive cycle

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    Date
    1991
    Author
    Quinitio, Emilia T.
    Yamauchi, Kohei
    Hara, Akihiko
    Fuji, Akira
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    Abstract
    The changes in GSI and HSI of Pandalus kessleri were monitored during an annual reproductive cycle. GSI reached a peak when ovaries were composed of yolky oocytes and decreased sharply during the spawning season. HSI followed a similar pattern. The changes in the concentrations of progesterone- and estradiol-17β-like substances in the hemolypmh were also investigated. Progesterone levels increased at the onset of vitellogenesis and decreased during vitellogenesis. In contrast, estradiol concentrations rose during the peak of vitellogenesis and dropped after the release of mature eggs from the gonad.
    URI
    http://hdl.handle.net/10862/1348
    Suggested Citation
    Quinitio, E. T., Yamauchi, K., Hara, A., & Fuji, A. (1991). Profiles of progesterone- and estradiol-like substances in the hemolymph of female Pandalus kessleri during an annual reproductive cycle. General and Comparative Endocrinology, 81(3), 343-348.
    DOI
    10.1016/0016-6480(91)90160-8
    Type
    Article
    ISSN
    0016-6480
    Subject
    Annual variations; Hermaphroditism; Reproductive cycle; Sex hormones; Sexual reproduction; Vitellogenesis; Animal physiology; Pandalus kessleri
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    • Journal Articles [1100]


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