Histological Observations of Annual Reproductive Cycle and Tidal Spawning Rhythm in the Female Porcupine Fish Diodon holocanthus
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- Fujita Toshiaki
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus Nanae Fish Culture Experimental Station, Faculty of Fisheries, Hokkaido University
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- Hamaura Wataru
- Kyokuyo Co., Ltd.
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- Takemura Akihiro
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus
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- Takano Kazunori
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus
書誌事項
- タイトル別名
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- Histological Observations of Annual Reproductive Cycle and Tidal Spawning Rhythm in the Female Porcupine Fish <i>Diodon holocanthus</i>
- Histological Observations of Annual Rep
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Oocyte development was observed in the porcupine fish, Diodon holocanthus, to describe the annual reproductive cycle, and spawning with tidal rhythm, in Okinawa, southern Japan. On the basis of histological characteristics, the oocytes were divided into the following eight stages: the chromatinnucleolus, peri-nucleolus, yolk vesicle, primary yolk, secondary yolk, and tertiary yolk stages. Based on a monthly sampling the oocytes at the yolk vesicle stage first appeared in January. The oocytes laden with yolk were observed from April through June. After July, the ovaries were comprised of oocytes at the chromatin-nucleolus and peri-nucleolus stage. These results suggest that endogenous vitellogenesis in this species starts in January, and that exogenous vitellogenesis takes placefrom April through June. When the fish were collected according to the tidal phase (the spring and the neap tide) from May through August, the well-developed oocytes were observed with the spring tides from May through June. In contrast, the ovaries collected at the neap tide during the same periodcontained a small amount of the oocytes at the tertiary yolk stage and showed post-spawning features. Therefore, it is likely that D. holocanthus spawns between the spring and the neap tide.
収録刊行物
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- Fisheries science
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Fisheries science 63 (5), 715-720, 1997
公益社団法人 日本水産学会
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詳細情報 詳細情報について
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- CRID
- 1390282679407023872
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- NII論文ID
- 130003903101
- 10004871380
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- NII書誌ID
- AA10993718
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- NDL書誌ID
- 4326622
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- ISSN
- 09199268
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可