Normal Embryonic Stages of the Pygmy Cuttlefish, Idiosepius pygmaeus paredoxus Ortmann : Developmental Biology
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概要
- 論文の詳細を見る
A normal table of embryonic stages for the pygmy cuttlefish, Idiosepius pygmaeus paradoxus Ortmann, a suitable material for developmental study of the cephalopod, is presented. A female cuttlefish kept in still sea water in a small vessel repeatedly lays 30-80 fertilized eggs every 2-7 days for more than a month. Thirty stages are morphologically defined during the embryonic period from oviposition to hatching. Hatching occurs 16-18 days after oviposition at 20℃. The external shape and some internal structures of the living embryo at each stage are illustrated, and the chronological ages and main developmental events are assembled in a tabular form.
- 社団法人日本動物学会の論文
- 1988-10-15
著者
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Yamamoto Masamichi
Ushimado Marine Laboratory Okayama University
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Yamamoto Masamichi
Ushimado Marine Laboratory Faculty Of Science Okayama University
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