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イシガレイの卵発生，ふ化仔魚の飼育および陸上池内における産卵
https://fra.repo.nii.ac.jp/records/2003388
https://fra.repo.nii.ac.jp/records/200338882843929-2f3d-4acf-9c08-ee9515adac78
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-04-25 | |||||||||||
| タイトル | ||||||||||||
| タイトル | イシガレイの卵発生，ふ化仔魚の飼育および陸上池内における産卵 | |||||||||||
| 言語 | ja | |||||||||||
| タイトル | ||||||||||||
| タイトル | ON THE EGG DEVELOPMENT AND REARING OF THE LARVAE OF A FLOUNDER, KAREIUS BICOLORATUS (BASILEWSKY) WITH REFERENCE TO ITS SPAWNING IN THE CULTURING POND | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | jpn | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||||
| アクセス権 | ||||||||||||
| アクセス権 | metadata only access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||||||||
| 著者 |
水戸, 敏
× 水戸, 敏
× 鵜川, 正雄
× 樋口, 正毅
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Kareius bicoloratus (BASILEWSKY)is one of the commonly found flatfishes, and widely distributed in the coastal waters of all over Japan. The authors carried out an experiment to obtain a large number of fertilized egg from captive adult fishes caught shortly before the spawning season. On 17, December, 1967, about 50 matured fishes caught with the small trawlers were transfered from the fishing ground near Hakatashima Fish Farming Station, Ehime Prefecture, to a rectangular concrete pond 10 × 12 × 3.5 m holding 420 tons of seawater in the Station. Although some shcck spawning were observed within several days after the fish were put in the pond, ordinary spawning was started on middle of January and ceased on middle of March of the next year. The spawning period observed in the pond can be divided into 3 periods having 22 days interval. In the first period, the amount of eggs spawned is comparatively small and its daily fluctuation is wide, the second period is a height of the spawning and the amount of eggs spawned is large and its daily fluctuation is narrow, final period is much the same as that of the first. The fertilization rate did not show such a remarkable trend observed in the amount of eggs spawned. The spawning observed in the pond was seemed to be confined mostly within the night. At the same time the authors carried out rearing experiment of the eggs and larvae to clarify the egg and larval developments of this species. The egg is pelagic, spherical in shape, measuring 1.03-1.10 mm in diameter. The yolk as well as the egg capsule are colorless, transparent, without conspicuous structure and containing no oil globules. During the egg development, many melanophores appeared on the embryonal body and some ones appeared also on the yolk surface near the embryonal body, on the other hand, xanthophores appeared only on the embryonal body. The hatching took place in 80-85 hours after the fertilization at the water temperature 14.2-15.0°C. The newly hatched larva is 3.05-3.25 mm in total length, with the anus situated in a little before the middle of body. The marginal fin without pigment cells and the myotome number is 13 + 27 = 40. Within 5 days after hatching, the yolk was consumed entirely, and the larva attained 4.55- 4.72 mm in total length with the anus situated nearly 1/3 anteriorly the body, and several melano- phores become to appear in the middle of ventral marginal fin. The larva attained 5. 32-5.53 mm in total length within 10 days after hatching and 5.45-6.68 mm within 14 days, when the size differences among the individuals reared under the same conditions are becoming prominent. Within 29 days after, the larva attained 7.20-10.22 mm in total length and the largest one being in the end of post-larval stage, but the eyes are still symmetrical. The metamorphosis characterized by the eye migration from left to right side of th body begins at the stage of 13 mm in total length and completes after 20mm when the larva has been passed 78 days after hatching. The membranous part of the pectoral fins dropped down during the stages of 16-18mm in total length. Concerning the growth and survival, ecology, abncrmality of pigmentation and the deformity of the larvae observed under the rearing conditions are also discussed briefly. | |||||||||||
| 言語 | en | |||||||||||
| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | 1967年12月17日に,瀬戸内海中部海域で漁獲されたイシガレイの成熟親魚を用いて,陸上池内における産卵および受精卵の飼育による卵,稚仔期の形態変化の観察を行なった。漁獲された親魚は産卵期の直前のものが多かったが,陸上池へ収容したために,産卵が約1.5月遅れた。池内での産卵には前,盛,後の3期が認められ,各々の期間は22日であった。産卵された卵のうち約半数は未受精卵ないし死卵であった。池内における産卵はほとんど夜間に限られていた。卵は球形分離浮性卵で,径1.03-1.10mm,油球はない。14.2-15.0℃の水温では受精後80–85時間でふ化した。ふ化直後の仔魚は全長2.95-3.14mm,体側には黒および黄色素胞,卵黄上には黒色素胞だけがあり膜鰭上には色素胞はない。筋肉節数は 13+27=40。ふ化後5日で卵黄を吸収し尽し,全長 4.55-4.72mm,消化管は中央部で1回転し,腹膜鰭後方に黒色素胞が出現する。ふ化後2週間を経過すると同一飼育条件下でも成長に個体差が現われてくる。ふ化後約1月で全長約10mmに達し,背·臀緒がほぼ完成するが,眼の移動はまだ起こらない。全長13mmに達すると左眼の右側への移動が始まり,全長20mmごろに限の移動は完了し,変態を終える。変態を終えるまでの飼育期間は約80日。変態を完了する少し前に胸鰭の膜質部が脱落する。なお,飼育実験中に観察された仔稚魚の成長,歩減り,生態色彩はん紋の異常,奇形などについても若干検討した。 | |||||||||||
| 言語 | ja | |||||||||||
| bibliographic_information |
ja : 南西海区水産研究所研究報告 en : Bulletin of the Nansei Regional Fisheries Research Laboratory 巻 1, p. 87-102, ページ数 16, 発行日 1969-03 |
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| 出版者 | ||||||||||||
| 出版者 | 南西海区水産研究所 | |||||||||||
| 言語 | ja | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | Nansei Regional Fisheries Research Laboratory | |||||||||||
| 言語 | en | |||||||||||
| item_10002_source_id_9 | ||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||
| 収録物識別子 | 0388-841X | |||||||||||
| item_10002_source_id_11 | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AN00181988 | |||||||||||
| 情報源 | ||||||||||||
| 識別子タイプ | Local | |||||||||||
| 関連識別子 | nnf_k_1_87 | |||||||||||
| 関連サイト | ||||||||||||
| 識別子タイプ | URI | |||||||||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010841380 | |||||||||||
| 言語 | ja | |||||||||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||||||||
