Affiliation:
1. Lomonosov Moscow State University
Abstract
The morphology of cerata and cnidosacs of nudibibranch mollusc Pteraeolidia semperi (Bergh, 1870) has been studied. From gastrodermal channel of the digestive gland the fine tubules arise, which contains cells with symbiotic algae – zooxanthellae. The cnidosac stores large kleptocnides. Thus. P. semperi represents a unique example of symbiotrophic feeding specialization. Morphological organization of its cerata and the digestive gland demonstrates several adaptation for cultivation of zooxanthellae providing proper conditions for active photosynthesis of zooxanthellae.
Publisher
The Russian Academy of Sciences
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