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ツルウバウオの産卵・幼生飼育およびウバウオの産卵


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Title: ツルウバウオの産卵・幼生飼育およびウバウオの産卵
Other Titles: The Spawning and the Larva Rearing of the Clingfish, Aspasmichthys ciconiae and the Spawning of the Clingfish, Aspasma minima
Authors: 塩垣, 優 / 道津, 喜衛
Authors (alternative): Shiogaki, Masaru / Dotsu, Yoshie
Issue Date: Dec-1972
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.34, pp.29-33; 1972
Abstract: An egg mass of the clingfish, Aspasmichthys ciconiae (Jordan and Fowler) and that of Aspasma minima (Doderlein) were collected from the rocky shore of Nomo (Lat. 32° 35.3' N, Long. 129° 45.5' E) near Nagasaki on April 14, 1972. The egg mass of A. ciconiae was deposited on the underside of a piece of roof tile underlying the stone on the pebble deposit in the lower intertidal zone. The egg mass was laid in a dense single layer and comprised 335 eggs in the same developmental stage and was guarded by the male parent being 78mm in total length. The egg mass of another clingfish, A. minima was also collected near the spawning site of the former. The egg mass was deposited on the underside of the stone being 27cm by 34cm in the same manner as the former spawning, but the latter comprised about 130 eggs in two different developmental stages and was guarded by the 42.3mm male parent. About 200 larvae of A. ciconiae hatched out from the egg mass collected were reared in a 30 liter plastic vessel for 55 days. The larvae were fed with the nauplii of the brine shrimp, Artemia salina as the first food and next with the splash copepod, Tigriopus japonicus. They first spent the planktonic life for about 10 days and entered into the clinging life on the vessel bottom at the 9 mm young stage. One of the larvae grew to a 20.1mm young in 55 days after hatching. The rudiments of the ventral discs developed at the about 7mm early postlarval stage. The discs were almost completed at the 10mm young stage.
URI: http://hdl.handle.net/10069/30891
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第34号

Citable URI : http://hdl.handle.net/10069/30891

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