the only species of the genus identified so far was Doto antarctica , first found in the Ross Sea and described in 1907 by the British diplomat and malacologist Charles Eliot Norton. D. carinova, the new species captured 277 meters deep in the Weddell Sea, enriches the biological heritage of the white continent and increases the number of invertebrates discovered by experts from the Ecoquim, Actiquim and Distantcom projects, led by Professor Conxita Àvila (Faculty of Biology – IRBio ) to study chemical ecology, phylogeography and trophic ecology of marine invertebrate communities in Antarctica. As Juan Moles, first author of the article published in PLOS ONE, explains, “the new species D. carinova differs from D. antarctica due to external morphological characters: coloration, number and shape of the

 

cerata, shape of the rhinophoric sheath, Cambodia Email List etc. lthough some internal features are also differential, such as the salivary glands or various reproductive organs. «These Antarctic nudibranchs have a similar clutch – also described as a first for the genus Doto – but with certain differences. Regarding the marine habitat, despite sharing a similar habitat in the benthic bottoms, D. carinova is located on gorgonians ( Primnoisis antarctica ) and D. antarctica in colonies of hydrozoans, where they lay their eggs, ”explains Moles. Reconstruction of an Antarctic species in 3D During the investigations, experts have also found new specimens of D. antarctica – until now the only nudibranch of this genus in Antarctica – in the Weddell Sea and Bouvet Island, a fact that confirms the circumpolar distribution of the species.

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They have also found the two associated species of cnidarians ( Oswaldella sp . And Antarctoscyphus sp .), On which this species probably feeds. To improve the taxonomic criteria that identify the species, experts have applied a wide range of techniques to the exploration of its organs and systems: histology, microcomputed tomography and 3D reconstruction. The results reveal the existence of giant cells attached to the central nervous system: «We propose that these cells correspond to giant neurons with some type of neurosecretory function. This discovery is unique, and everything indicates that all species of the genus could present these giant neurons, in greater or lesser numbers, although we must continue exploring this issue, “says Juan Moles. A reproductive system has also

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