The nudibranch Coryphella trophina (Bergh, 1890) (Gastropoda, Nudibranchia) uses twice stolen stinging capsules for its protection

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Resumo

Most nudibranchs feed on hydroid polyps and anemones, using stolen stinging capsules of eaten victims, kleptocnids, for protection. The nudibranch Coryphella trophina (Bergh, 1890) was found to eat other nudibranchs. This predator uses for protection stinging capsules which were stolen twice: once they were stolen by mollusks that fed on cnidarians, and the second time they were stolen by C. trophina itself that ate these mollusks.

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Sobre autores

N. Krupitskaya

Lomonosov Moscow State University

Autor responsável pela correspondência
Email: nelly-karimova@yandex.ru
Rússia, Moscow

I. Ekimova

Lomonosov Moscow State University

Email: nelly-karimova@yandex.ru
Rússia, Moscow

V. Malakhov

Lomonosov Moscow State University

Email: nelly-karimova@yandex.ru

Academician of the RAS

Rússia, Moscow

Bibliografia

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  6. Goodheart J.A., Bleidißel S., Schillo D., et al. Comparative morphology and evolution of the cnidosac in Cladobranchia (Gastropoda: Heterobranchia: Nudibranchia) //Frontiers in zoology. 2018. Vol. 15, No. 1, P. 1–18.
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  11. Ekimova I.A., Valdes A., Chichvarkhin A., et al. Diet-driven ecological radiation and allopatric speciation result in high species diversity in a temperate-cold water marine genus Dendronotus (Gastropoda: Nudibranchia) // Molecular Phylogenetics and Evolution. 2019. Vol. 141, No. 1, P. 106609.
  12. Ekimova I.A. A new species of the genus Coryphella (Gastropoda: Nudibranchia) from the Kuril Islands // Ruthenica, Russian Malacological Journal. 2022. Vol. 32, No. 1, P. 41–48.
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2. Fig. 1. Contents of the stomachs of Coryphella: A – food bolus with jaws of an unidentified nudibranch mollusk from the family Coryphellidae (1), radula of Coryphella alexanderi (2) and jaws of an unidentified representative of the family Dendronotidae (3); B – food bolus with nematocysts eurythelas (4); C – eurythelas from the food bolus at high magnification: 5 – stinging thread, 6 – stinging capsule.

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3. Fig. 2. Diagram of a longitudinal section of the cerata of Coryphella trophina. mc – muscular sheath of the cnidosacus; lu – lumen; cnph – cnidophage; klcn – kleptocnids; mb – body muscles; hc – hemocoel; dg – digestive gland; ep – epidermis; cn – cnidosacus.

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