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The female lays eggs in a bubble, which, covered with a double layer of silk and deformed into a more or less flat bulb, is hung on a water plant or in the diver's bell and carefully monitored.
- Auteur
- Project Gutenberg's Leven der Dieren, Deel 3, Hoofdstuk 5, by A. E. Brehm
- Ajoutée le
- Dimanche 14 Juin 2020
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