Morphological Organization of Cerata in the Nudibranch Pteraeolidia semperi (Gastropoda, Nudibranchia)

The morphology of cerata and cnidosacs were studied in the nudibranch mollusk Pteraeolidia semperi (Bergh, 1870). Fine tubules arise from the gastrodermal channel of the digestive gland and contain cells with symbiotic algae (zooxanthellae). The cnidosac stores large kleptocnides. Thus, P. semperi p...

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Bibliographic Details
Published in:Doklady. Biological sciences 2023-02, Vol.508 (1), p.72-75
Main Authors: Vorobyeva, O. A., Ekimova, I. A., Malakhov, V. V.
Format: Article
Language:English
Subjects:
Acclimatization
Adaptation
Adaptation, Physiological
Algae
Animals
Biomedical and Life Sciences
Evolutionary Biology
Gastropoda
Life Sciences
Nudibranchia
Photosynthesis
Plant Sciences
Symbiosis
Tubules
Zooxanthellae
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Summary:The morphology of cerata and cnidosacs were studied in the nudibranch mollusk Pteraeolidia semperi (Bergh, 1870). Fine tubules arise from the gastrodermal channel of the digestive gland and contain cells with symbiotic algae (zooxanthellae). The cnidosac stores large kleptocnides. Thus, P. semperi provides a unique example of symbiotrophic feeding specialization. Morphological organization of its cerata and the digestive gland demonstrates several adaptations for housing zooxanthellae and providing them with proper conditions for active photosynthesis.
ISSN:0012-4966
1608-3105
DOI:10.1134/S0012496622700181