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3D-anatomy of a new tropical Peruvian nudibranch gastropod species, Corambe mancorensis, and novel hypotheses on dorid gill ontogeny and evolution

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dc.contributor.author Martynov, A.
dc.contributor.author Brenzinger, B.
dc.contributor.author Hooker, Y.
dc.contributor.author Schrödl, M.
dc.date.accessioned 2022-01-18T19:26:51Z
dc.date.available 2022-01-18T19:26:51Z
dc.date.issued 2011
dc.identifier.uri https://hdl.handle.net/20.500.12866/10953
dc.description.abstract Nudibranch molluscs of the genus Corambe differ from most other Doridoidea by having ventral rather than dorsal anus and gills. Because of these and other features, such as separate cerebral and pleural ganglia, corambids have been considered as an archaic or enigmatic group. The first tropical eastern Pacific Corambe species is described in morphological and some histological detail. Selected organs such as circulatory and central nervous features are reconstructed from serial semithin histological slides and visualized in three dimensions using Amira software. Anatomical findings include two separate ganglia on the visceral loop and an additional ganglion on the right side of the body that is connected to the pedal ganglion. Corambe mancorensis n. sp. is dorsoventrally depressed, has an oval, fleshy notum covered with a cuticle, and has a wide posterior medial notch that can be closed completely by unique lobules. Gills are arranged in an unusual horseshoe-like manner including both phanerobranch anal (=medial) gills and corambid lateroventral gill rows, and are connected to the atrium by a complex vessel system. The three medial gills arise from a posterodorsal gill cavity within the notal notch, similar to the case in Corambe evelinae Marcus, 1958. By scanning electron microscopy a vestigial gill cavity is also detectable in C. pacifica MacFarland & O'Donoghue, 1929, but here it is situated ventrally. Our new information on adult corambids is compared with new and published ontogenetic data on phanerobranch and cryptobranch dorids, to contribute to a novel interpretation of the ontogeny of dorid mantle and gill complexes. The progenetic evolution of corambids 'recapitulates' early juvenile dorid stages - turning Haeckel's Law upside down. en_US
dc.language.iso eng
dc.publisher Oxford University Press
dc.relation.ispartofseries Journal of Molluscan Studies
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Histology en_US
dc.subject Scanning Electron Microscopy en_US
dc.subject Functional Morphology en_US
dc.subject Gastropoda en_US
dc.subject Data Set en_US
dc.subject Anatomy en_US
dc.subject Corambe Evelinae en_US
dc.subject Corambe Pacifica en_US
dc.subject Corambidae en_US
dc.subject Doridoidea en_US
dc.subject Juvenile en_US
dc.subject Mollusca en_US
dc.subject Ontogeny en_US
dc.subject Software en_US
dc.subject Three-Dimensional Modeling en_US
dc.subject Tropical Environment en_US
dc.subject Vessel en_US
dc.subject Visualization en_US
dc.title 3D-anatomy of a new tropical Peruvian nudibranch gastropod species, Corambe mancorensis, and novel hypotheses on dorid gill ontogeny and evolution en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1093/mollus/eyq047
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#1.06.12
dc.relation.issn 1464-3766


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