The structure of the columellar muscle system in Clio pyramidata and Cymbulia peroni (Theocosomata, Gastropoda). With a note on the phylogeny of both species
The phylogenetic relation between Clio pyramidata Linnaeus, 1767, and Cymbulia peroni De Blainville, 1818, has been studied with regard to the structure of their muscle systems. Specimens of both species collected from the North Atlantic Ocean and the Mediterranean were sectioned 5 µm thick and stai...
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ftnaturalis:oai:naturalis:504496 2023-05-15T17:32:47+02:00 The structure of the columellar muscle system in Clio pyramidata and Cymbulia peroni (Theocosomata, Gastropoda). With a note on the phylogeny of both species Pafort-van Iersel, Trudy Spoel, S. van der 1979 application/pdf http://www.repository.naturalis.nl/record/504496 http://www.repository.naturalis.nl/document/548151 unknown http://www.repository.naturalis.nl/record/504496 http://www.repository.naturalis.nl/document/548151 (c) Naturalis Bijdragen tot de Dierkunde (0067-8546) vol.48 (1979) nr.2 p.111 Article / Letter to the editor 1979 ftnaturalis 2022-09-01T06:21:58Z The phylogenetic relation between Clio pyramidata Linnaeus, 1767, and Cymbulia peroni De Blainville, 1818, has been studied with regard to the structure of their muscle systems. Specimens of both species collected from the North Atlantic Ocean and the Mediterranean were sectioned 5 µm thick and stained with Haematoxilin-Eosin, Crossmon or Azan for histological purposes or they were studied as cleared dissected or entire animals. The columellar muscle and subectodermal wing muscles of both species are described. It is concluded that Clio shows neoteny since it develops without metamorphosis. The asymmetry in anatomy proves that both Clio and Cymbulia descend from spiralised ancestors. For Clio two primitive characters are discussed which may be due to the “larval stage” of the adult but which also affirm the possible relation of molluscs to a coelenterate-like ancestor. Original structures found in Cymbulia are also discussed in the light of a possible phylogenetic relation between Thecosomata and Coelenterata, more in particular Conulata. Article in Journal/Newspaper North Atlantic Naturalis Digital Academic Repository (National Museum of Natural History in the Netherlands) |
institution |
Open Polar |
collection |
Naturalis Digital Academic Repository (National Museum of Natural History in the Netherlands) |
op_collection_id |
ftnaturalis |
language |
unknown |
description |
The phylogenetic relation between Clio pyramidata Linnaeus, 1767, and Cymbulia peroni De Blainville, 1818, has been studied with regard to the structure of their muscle systems. Specimens of both species collected from the North Atlantic Ocean and the Mediterranean were sectioned 5 µm thick and stained with Haematoxilin-Eosin, Crossmon or Azan for histological purposes or they were studied as cleared dissected or entire animals. The columellar muscle and subectodermal wing muscles of both species are described. It is concluded that Clio shows neoteny since it develops without metamorphosis. The asymmetry in anatomy proves that both Clio and Cymbulia descend from spiralised ancestors. For Clio two primitive characters are discussed which may be due to the “larval stage” of the adult but which also affirm the possible relation of molluscs to a coelenterate-like ancestor. Original structures found in Cymbulia are also discussed in the light of a possible phylogenetic relation between Thecosomata and Coelenterata, more in particular Conulata. |
format |
Article in Journal/Newspaper |
author |
Pafort-van Iersel, Trudy Spoel, S. van der |
spellingShingle |
Pafort-van Iersel, Trudy Spoel, S. van der The structure of the columellar muscle system in Clio pyramidata and Cymbulia peroni (Theocosomata, Gastropoda). With a note on the phylogeny of both species |
author_facet |
Pafort-van Iersel, Trudy Spoel, S. van der |
author_sort |
Pafort-van Iersel, Trudy |
title |
The structure of the columellar muscle system in Clio pyramidata and Cymbulia peroni (Theocosomata, Gastropoda). With a note on the phylogeny of both species |
title_short |
The structure of the columellar muscle system in Clio pyramidata and Cymbulia peroni (Theocosomata, Gastropoda). With a note on the phylogeny of both species |
title_full |
The structure of the columellar muscle system in Clio pyramidata and Cymbulia peroni (Theocosomata, Gastropoda). With a note on the phylogeny of both species |
title_fullStr |
The structure of the columellar muscle system in Clio pyramidata and Cymbulia peroni (Theocosomata, Gastropoda). With a note on the phylogeny of both species |
title_full_unstemmed |
The structure of the columellar muscle system in Clio pyramidata and Cymbulia peroni (Theocosomata, Gastropoda). With a note on the phylogeny of both species |
title_sort |
structure of the columellar muscle system in clio pyramidata and cymbulia peroni (theocosomata, gastropoda). with a note on the phylogeny of both species |
publishDate |
1979 |
url |
http://www.repository.naturalis.nl/record/504496 http://www.repository.naturalis.nl/document/548151 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Bijdragen tot de Dierkunde (0067-8546) vol.48 (1979) nr.2 p.111 |
op_relation |
http://www.repository.naturalis.nl/record/504496 http://www.repository.naturalis.nl/document/548151 |
op_rights |
(c) Naturalis |
_version_ |
1766131054948646912 |