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コケギンポの生活史


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Title: コケギンポの生活史
Other Titles: The Life History of the Blenniid Fish, Neoclinus bryope
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.1-8; 1972
Abstract: The blenniid fish, Neoclinus bryope (Jordan and Snyder) is distributed in the central and southern Japan. It inhabits in tide pools and among the stones lying in the lower intertidal zone of rocky shore. It feeds on tiny shells, anomura larvae, amphipods, small shrimps and annelids, and grows over 70 mm in full grown size. Four egg masses of the fish were collected in the dead tubular vermid shell, Selpulorbis imbricatus attached on the stones in the rocky shore of Nomozaki (Lat. 32°35.3'N, Long. 129°45.5'E) during January to April 1972. The eggs were deposited on the inner wall of the shell in a single layer. The male parent was guarding over the eggs. Generally each egg mass comprised several egg groups in different developmental stages. The number of the eggs in each egg mass ranged from 90 to 250. The eggs were spherical but somewhat flattened in shape and ranged from 1.28 to 1.49 mm in diameter. Each egg was provided with a bundle of adhesive filaments. The hatching took place within 40 days at the water temperature which varied from 13.1° to 14.2℃. The newly hatched larva provided with 48 somites was 6.62 mm in total length. Over 11.000 larvae and juveniles of the fish in the planktonic life measuring from 5.0 to 29.0 mm in total length after fixation, were collected with submerged fish lamp at Nomo Bay, Nomozaki, during January 1968 to May 1969. Some of the juveniles ranging from 25 to 29 mm were kept in an aquarium, and entered into the bottom life at the size range of 25 to 29 mm in a few days after the captivity. The juveniles attained about half size of the adult being 50 mm in the minimum size when they changed their life mode. This suggets that this fish spends a longer planktonic life in its larval stage than those of many other fishes inhabiting in tide pools.
URI: http://hdl.handle.net/10069/30888
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第34号

Citable URI : http://hdl.handle.net/10069/30888

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