MORPHOLOGICAL ORGANIZATION OF CERATA IN A NUDIBRANCH  PTERAEOLIDIA SEMPERI  (GASTROPODA, NUDIBRANCHIA)

O. A. Vorobyeva; Воробьева О. А.; I. A. Ekimova; Екимова И. А.; V. V. Malakhov; Малахов В. В.

doi:10.31857/S2686738922600558

MORPHOLOGICAL ORGANIZATION OF CERATA IN A NUDIBRANCH PTERAEOLIDIA SEMPERI (GASTROPODA, NUDIBRANCHIA)

Authors: Vorobyeva O.A.¹, Ekimova I.A.¹, Malakhov V.V.¹
Affiliations:
1. Lomonosov Moscow State University
Issue: Vol 508, No 1 (2023)
Pages: 68-72
Section: Articles
URL: https://vestnik.nvsu.ru/2686-7389/article/view/651155
DOI: https://doi.org/10.31857/S2686738922600558
EDN: https://elibrary.ru/MLNHTJ
ID: 651155

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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.

Keywords

molluscs, morphology, symbiosis, zooxanthellae, kleptocnides

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