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ハナイカ(コウカイ科)の未受精産出卵


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Title: ハナイカ(コウカイ科)の未受精産出卵
Other Titles: Discharged, Unfertilized Eggs of the Cuttlefish, Sepia (Metasepia) tullbergi
Authors: 夏苅, 豊
Authors (alternative): Natsukari, Yutaka
Issue Date: Aug-1979
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.47, pp.27-28; 1979
Abstract: A female cuttlefish, Sepia (Metasepia) tullbergi, kept in a table aquarium laid an egg mass in June, 1976, at the Fisheries Experimental Station of Nagasaki University, Nomozaki, near Nagasaki. The eggs were laid individualy in one group on Müller's gauze with wire frame which was placed previously in the aquarium. Each egg was cased within a capsule. A capsule was subspherical, about 12 mm in length, about 10 mm in width, translucent milk white in color. One side of the capsule forms a short stock with a flattend end, and with which the capsule attached to the gauze. The other side of a capsule was not pointed, unlike as those of Sepia officinalis and other sepiids. The egg was ellipsoid as a hen's egg, about 4.8 mm in length, about 3.5 mm in width, and light yellow in color. In all the eggs, embryonic development failed to occur, so they seemed unfertilized.
URI: http://hdl.handle.net/10069/30614
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第47号

Citable URI : http://hdl.handle.net/10069/30614

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