First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean

The first cases of anomalies in the number of shell-plates in Tonicia atrata (Sowerby II, 1840) are herein reported on the basis of three specimens from Zaratiegui Bay, Tierra del Fuego, Argentina (54°50’53’’ S, 68°29’7’’ W): two cases of coalescence (one symmetrical and another one asymmetrical) an...

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Authors: Guillén, Camila, Urteaga, Diego
Format: article
Status:Published version
Publication Date:2019
Country:Argentina
Institution:Universidad Nacional de La Plata
Repository:SEDICI (UNLP)
Language:English
OAI Identifier:oai:sedici.unlp.edu.ar:10915/111314
Online Access:http://sedici.unlp.edu.ar/handle/10915/111314
Access Level:Open access
Keyword:Ciencias Naturales
Teratology
Morphology
Mollusca
Argentina
Patagonia
Teratología
Morfología
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spelling First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic OceanPrimeros registros de coalescencia e hipomerismo en Tonicia atrata (Polyplacophora, Chitonidae) en el Océano Atlántico sudoccidentalGuillén, CamilaUrteaga, DiegoCiencias NaturalesTeratologyMorphologyMolluscaArgentinaPatagoniaTeratologíaMorfologíaThe first cases of anomalies in the number of shell-plates in Tonicia atrata (Sowerby II, 1840) are herein reported on the basis of three specimens from Zaratiegui Bay, Tierra del Fuego, Argentina (54°50’53’’ S, 68°29’7’’ W): two cases of coalescence (one symmetrical and another one asymmetrical) and a case of hypomerism. The abnormal specimens bore less ctenidia than physiological conspecific specimens of similar size. The symmetrical coalescent specimen and the hypomeric individual were significantly wider (higher width/length ratio) than physiological specimens. Nevertheless, the reported abnormalities seem to have no effect on general growth, since the body size of the abnormal specimens were close to the largest physiological ones found in the same locality.Se registran aquí los primeros casos de anomalías en el número de placas en ejemplares de Tonicia atrata (Sowerby II, 1840), sobre la base de tres ejemplares hallados en Bahía Zaratiegui, Tierra del Fuego, Argentina (54°50’53’’ S, 68°29’7’’ O): dos casos de coalescencia (uno simétrico; el otro asimétrico) y un caso de hipomerismo. Los ejemplares anormales poseían menos ctenidios que los coespecíficos fisiológicos de similar tamaño. El ejemplar coalescente simétrico y el hipomérico eran significativamente más anchos (mayor relación ancho/largo) que los individuos fisiológicos. Sin embargo, las aberraciones registradas no parecen haber afectado el crecimiento general de los individuos anormales, ya que sus tallas fueron similares a la de los ejemplares fisiológicos más grandes encontrados en la misma localidad.Facultad de Ciencias Naturales y Museo2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1-6http://sedici.unlp.edu.ar/handle/10915/111314enginfo:eu-repo/semantics/altIdentifier/issn/1853-0400info:eu-repo/semantics/altIdentifier/doi/10.22179/REVMACN.21.610info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/Creative Commons Attribution 3.0 Unported (CC BY 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T13:04:01Zoai:sedici.unlp.edu.ar:10915/111314Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:04:01.99SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean
Primeros registros de coalescencia e hipomerismo en Tonicia atrata (Polyplacophora, Chitonidae) en el Océano Atlántico sudoccidental
title First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean
spellingShingle First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean
Guillén, Camila
Ciencias Naturales
Teratology
Morphology
Mollusca
Argentina
Patagonia
Teratología
Morfología
title_short First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean
title_full First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean
title_fullStr First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean
title_full_unstemmed First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean
title_sort First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean
dc.creator.none.fl_str_mv Guillén, Camila
Urteaga, Diego
author Guillén, Camila
author_facet Guillén, Camila
Urteaga, Diego
author_role author
author2 Urteaga, Diego
author2_role author
dc.subject.none.fl_str_mv Ciencias Naturales
Teratology
Morphology
Mollusca
Argentina
Patagonia
Teratología
Morfología
topic Ciencias Naturales
Teratology
Morphology
Mollusca
Argentina
Patagonia
Teratología
Morfología
description The first cases of anomalies in the number of shell-plates in Tonicia atrata (Sowerby II, 1840) are herein reported on the basis of three specimens from Zaratiegui Bay, Tierra del Fuego, Argentina (54°50’53’’ S, 68°29’7’’ W): two cases of coalescence (one symmetrical and another one asymmetrical) and a case of hypomerism. The abnormal specimens bore less ctenidia than physiological conspecific specimens of similar size. The symmetrical coalescent specimen and the hypomeric individual were significantly wider (higher width/length ratio) than physiological specimens. Nevertheless, the reported abnormalities seem to have no effect on general growth, since the body size of the abnormal specimens were close to the largest physiological ones found in the same locality.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/111314
url http://sedici.unlp.edu.ar/handle/10915/111314
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1853-0400
info:eu-repo/semantics/altIdentifier/doi/10.22179/REVMACN.21.610
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
dc.format.none.fl_str_mv application/pdf
1-6
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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