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エツCoilia nasusの産卵域


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Title: エツCoilia nasusの産卵域
Other Titles: Spawning Area of Engraulid Fish, Coilia nasus
Authors: 田北, 徹 / 増谷, 英雄
Authors (alternative): Takita, Toru / Masutani, Hideo
Issue Date: Feb-1979
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.46, pp.7-10; 1979
Abstract: Net surveys were conducted in July and August, 1966 in the lower parts of six rivers flowing into Ariake Sound to determine the spawning area of engraulid fish, Coilia nasus. The eggs, larvae, and juveniles of the fish were abundantly collected from the area of tidal influence in the lower Chikugo River, and very few eggs were collected from two rivers, but nothing was collected from the other rivers investigated. The locations of the rivers where the eggs were collected suggest that the fish spawns in the rivers near the innermost area of Ariake Sound. Areal occurrence of the eggs in the Chikugo River proves it necessary for the spawning of the fish that the river has a considerably large mass of fresh water in the area of tidal influence. Among the rivers flowing into Ariake Sound, only the Chikugo River satisfies such requirements.
URI: http://hdl.handle.net/10069/30645
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第46号

Citable URI : http://hdl.handle.net/10069/30645

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