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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Detalles Bibliográficos
Autores principales: Guillén, Camila, Urteaga, Diego
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Ciencias Naturales
Teratology
Morphology
Mollusca
Argentina
Patagonia
Teratología
Morfología
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/111314
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-111314
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Teratology
Morphology
Mollusca
Argentina
Patagonia
Teratología
Morfología
spellingShingle Ciencias Naturales
Teratology
Morphology
Mollusca
Argentina
Patagonia
Teratología
Morfología
Guillén, Camila
Urteaga, Diego
First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean
topic_facet 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.
format Articulo
Articulo
author Guillén, Camila
Urteaga, Diego
author_facet Guillén, Camila
Urteaga, Diego
author_sort Guillén, Camila
title First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the southwestern Atlantic Ocean
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
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/111314
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AT urteagadiego firstrecordsofcoalescenceandhypomerismintoniciaatratapolyplacophorachitonidaeinthesouthwesternatlanticocean
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bdutipo_str Repositorios
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