Title |
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ja
北海道噴火湾におけるウナギガジ雌魚の性成熟
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en
Gonadal Maturation of Female Ribbon Prickleback in Funka Bay, Hokkaido
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Creator |
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ja
筒井, 浩之
en
Tsutsui, Hiroyuki
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Accessrights |
open access |
Rights |
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ja
© 1995 公益社団法人日本水産学会
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en
© 1995 The Japanese Society of Fisheries Science
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Subject |
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Other
en
噴火湾
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Other
ja
ウナギガジ
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Other
en
性成熟
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Other
en
産卵期
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NDC
663
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Description |
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Abstract
en
Gonadal maturation of female ribbon prickleback, Lumpenus sagitta, collected in Funka Bay, Hokkaido, from September 1991 to Mayebruary 1994 was examined histologically. Oocytes from the chromatin nucleolus stage to the migratory nucleus stage were observed in the ovary. Based on the developmental stages of ovarian eggs, the maturity of female of L. sagitta was divided into five stages: the yolk vesicle stage, the oil drop stage, the early yolk formation stage, the late yolk formation stage and the migratory nucleus stage. In January, 91.6% of the femals had oocytes at the yolk vesicle stage and 8.4% at the oil drop stage. In the same period, postovulatory follicles were found in the ovary. Percentages of oocytes at the oil drop stage increased to 80% in May. In the middle of September, all of the females were in the late yolk formation stage. In Novemver, many oocytes at the migratory nucleus stage were observed. These observations, indicate that L. sagitta spawn from December to January in Funka Bay.
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Publisher |
ja
日本水産学会
en
The Japanese Society of Scientific Fisheries
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Date |
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Language |
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Resource Type |
journal article |
Version Type |
VoR |
Identifier |
HDL
http://hdl.handle.net/2115/38816
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Relation |
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isIdenticalTo
DOI
https://doi.org/10.2331/suisan.61.707
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Journal |
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PISSN
0021-5392
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EISSN
1349-998X
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NCID
AN00193422
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ja
日本水産学会誌
en
Bulletin of the Japanese Society of Scientific Fisheries
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Volume Number61
Issue Number5
Page Start707
Page End712
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File |
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Oaidate |
2023-07-26 |