Stimulation of ovarian development in a tropical damselfish by prolonged photoperiod using pellets containing long-afterglow phosphorescent pigment

Satoshi Imamura, Mohammad Abu Jafor Bapary, Yuki Takeuchi, Sung Pyo Hur, Akihiro Takemura

研究成果: Article

2 引用 (Scopus)

抄録

The present study examined whether light emitted by long-afterglow phosphorescent pigments (LumiNova) would stimulate gonadal development in fish during the nonbreeding season. Pellets containing LumiNova powder (treatment group) were prepared and placed on the calvaria of specimens of the sapphire devil Chrysiptera cyanea, a reef-associated damselfish that requires long days for gonadal recrudescence. A pellet without LumiNova powder was placed on the calvaria of the control fish (control group). Fish were reared at 26°C under a light-dark cycle (12 h photophase, 12 h scotophase; LD 12:12) for 4 weeks. No difference in the gonadosomatic index (GSI) or ovarian histology was observed among the control, sham-operation, and treatment groups 1 week after the start of the experiment. After 4 weeks, the GSI of the control and sham-operation groups remained at low levels, and ovaries contained immature oocytes at the perinucleolus stage. In contrast, the treatment group exhibited significantly higher values of GSI as well as developed ovaries with fully vitellogenic oocytes. These results demonstrated that long-day conditions were produced by light emitted from the LumiNova pellets, thus stimulating ovarian development in the damselfish. Therefore, long-afterglow phosphorescent pigments can be used as an alternative to standard light sources for purposes of artificial stimulation of gonadal development in fish.

元の言語English
ページ(範囲)223-227
ページ数5
ジャーナルFisheries and Aquatic Science
17
発行部数2
DOI
出版物ステータスPublished - 2014
外部発表Yes

Fingerprint

Pomacentridae
Ovulation Induction
ovarian development
Photoperiod
gonadosomatic index
photoperiod
Pigments
Fish
fish development
pellets
pigment
Fishes
pigments
powders
oocytes
fish
Light
Skull
Powders
Oocytes

ASJC Scopus subject areas

  • Aquatic Science
  • Biochemistry
  • Molecular Biology
  • Oceanography

これを引用

Stimulation of ovarian development in a tropical damselfish by prolonged photoperiod using pellets containing long-afterglow phosphorescent pigment. / Imamura, Satoshi; Bapary, Mohammad Abu Jafor; Takeuchi, Yuki; Hur, Sung Pyo; Takemura, Akihiro.

:: Fisheries and Aquatic Science, 巻 17, 番号 2, 2014, p. 223-227.

研究成果: Article

Imamura, Satoshi ; Bapary, Mohammad Abu Jafor ; Takeuchi, Yuki ; Hur, Sung Pyo ; Takemura, Akihiro. / Stimulation of ovarian development in a tropical damselfish by prolonged photoperiod using pellets containing long-afterglow phosphorescent pigment. :: Fisheries and Aquatic Science. 2014 ; 巻 17, 番号 2. pp. 223-227.
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abstract = "The present study examined whether light emitted by long-afterglow phosphorescent pigments (LumiNova) would stimulate gonadal development in fish during the nonbreeding season. Pellets containing LumiNova powder (treatment group) were prepared and placed on the calvaria of specimens of the sapphire devil Chrysiptera cyanea, a reef-associated damselfish that requires long days for gonadal recrudescence. A pellet without LumiNova powder was placed on the calvaria of the control fish (control group). Fish were reared at 26°C under a light-dark cycle (12 h photophase, 12 h scotophase; LD 12:12) for 4 weeks. No difference in the gonadosomatic index (GSI) or ovarian histology was observed among the control, sham-operation, and treatment groups 1 week after the start of the experiment. After 4 weeks, the GSI of the control and sham-operation groups remained at low levels, and ovaries contained immature oocytes at the perinucleolus stage. In contrast, the treatment group exhibited significantly higher values of GSI as well as developed ovaries with fully vitellogenic oocytes. These results demonstrated that long-day conditions were produced by light emitted from the LumiNova pellets, thus stimulating ovarian development in the damselfish. Therefore, long-afterglow phosphorescent pigments can be used as an alternative to standard light sources for purposes of artificial stimulation of gonadal development in fish.",
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AB - The present study examined whether light emitted by long-afterglow phosphorescent pigments (LumiNova) would stimulate gonadal development in fish during the nonbreeding season. Pellets containing LumiNova powder (treatment group) were prepared and placed on the calvaria of specimens of the sapphire devil Chrysiptera cyanea, a reef-associated damselfish that requires long days for gonadal recrudescence. A pellet without LumiNova powder was placed on the calvaria of the control fish (control group). Fish were reared at 26°C under a light-dark cycle (12 h photophase, 12 h scotophase; LD 12:12) for 4 weeks. No difference in the gonadosomatic index (GSI) or ovarian histology was observed among the control, sham-operation, and treatment groups 1 week after the start of the experiment. After 4 weeks, the GSI of the control and sham-operation groups remained at low levels, and ovaries contained immature oocytes at the perinucleolus stage. In contrast, the treatment group exhibited significantly higher values of GSI as well as developed ovaries with fully vitellogenic oocytes. These results demonstrated that long-day conditions were produced by light emitted from the LumiNova pellets, thus stimulating ovarian development in the damselfish. Therefore, long-afterglow phosphorescent pigments can be used as an alternative to standard light sources for purposes of artificial stimulation of gonadal development in fish.

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