Karl-Heinz Tomaschko

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In defense against attack by predators, cnidosacs in the tips of cerata (dorsal appendages) of aeolidacean nudibranchs discharge masses of mature nematocysts that are derived from cnidarian food. Cnidosac-related structures in various nudibranchs may provide a reconstruction of potential steps in the evolution of cnidosacs. Such structures in the cerata of(More)
Parapodia of the sacoglossan slug Elysia timida were preserved by high-pressure cryofixation during feeding experiments and investigated with transmission electron microscopy. This slug has been known for its long-term retention of active chloroplasts and photosynthesis. We observed different stages of phagocytosis of chloroplast components from ingested(More)
Six species of sacoglossan sea slugs engulf and store chloroplasts from their algal food (kleptoplasts) in digestive gland cells for weeks. The question is unresolved as to why kleptoplasts are retained only in certain species, while in most others they are digested. We recently showed phagocytosis of algal chloroplasts by digestive cells in the long-term(More)
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