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dc.contributor.author
Echevarría, Javier
dc.contributor.author
Damborenea, Susana Ester
dc.contributor.author
Manceñido, Miguel Oscar
dc.date.available
2018-06-22T17:51:57Z
dc.date.issued
2017-02
dc.identifier.citation
Echevarría, Javier; Damborenea, Susana Ester; Manceñido, Miguel Oscar; Constructional morphology of the shell/ligament system in opisthogyrate rostrate bivalves; Royal Society of Edinburgh; Earth and Environmental Science Transactions of the Royal Society of Edinburgh; 106; 4; 2-2017; 221-227
dc.identifier.issn
1755-6910
dc.identifier.uri
http://hdl.handle.net/11336/49673
dc.description.abstract
The bivalve ligament provides the thrust for shell opening, acting as the resistance in a lever system against which adductor muscle effort is applied. Usually, its outer lamellar layer is subjected to tensile stress, while the inner fibrous layer is compressed, with the pivotal axis located between them. However, opisthogyrate rostrate bivalves display a concave dorsal margin, and both the umbo and the postero-dorsal angle of the shell project dorsally to the ligament, which then fails to act as pivotal axis. Three opisthogyrate rostrate genera of unrelated lineages show somewhat different solutions to this morpho-functional challenge. In Cuspidaria (Anomalodesmata), the ligament is internal, subjected only to compression and ventral to the pivotal axis, a thickened periostracum develops, forcing the dorsal margins of the valves to act as pivotal axis, and the posterior parts of the shell's dorsal margins gape dorsally. In Nuculana (Palaeotaxodonta), the inner layer of the ligament is internal, the outer layer is external but reduced, and some species develop a dorsal ridge parallel to the commissural plane, on a level with the rostrum and acting as pivotal axis. In Pterotrigonia (Palaeoheterodonta) and other rostrate trigoniides, the ligament is external opisthodetic, but is allometrically reduced. Trigoniides may also develop a dorsal ridge.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Royal Society of Edinburgh
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Allometry
dc.subject
Anomalodesmata
dc.subject
Bivalvia
dc.subject
Concave Dorsal Margin
dc.subject
Functional Morphology
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Nuculanida
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Palaeoheterodonta
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Palaeotaxodonta
dc.subject
Poromyida
dc.subject
Trigoniida
dc.subject.classification
Meteorología y Ciencias Atmosféricas
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Constructional morphology of the shell/ligament system in opisthogyrate rostrate bivalves
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-21T14:18:01Z
dc.journal.volume
106
dc.journal.number
4
dc.journal.pagination
221-227
dc.journal.pais
Reino Unido
dc.journal.ciudad
Edimburgo
dc.description.fil
Fil: Echevarría, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.description.fil
Fil: Damborenea, Susana Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.description.fil
Fil: Manceñido, Miguel Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.journal.title
Earth and Environmental Science Transactions of the Royal Society of Edinburgh
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1017/S1755691016000219
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/earth-and-environmental-science-transactions-of-royal-society-of-edinburgh/article/constructional-morphology-of-the-shellligament-system-in-opisthogyrate-rostrate-bivalves/BDC31FBC02ED2E146346323BE5E37174


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