¿El otolito de pejerrey (Odontesthes bonariensis), refleja el estrés ambiental?

Autores
Avigliano, Esteban; Tombari, A.; Volpedo, Alejandra V.
Año de publicación
2012
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
It has been proven that otoliths reflect morphology, morphometry and chemical composition of the environment that fish frequent. However, it has not been established if extreme environmental changes can be reflected by such structure. In this study, we analyze the morphology and morphometry of otolith sagitta of silverside (Odontesthes bonariensis) living in a setting that shows important environmental changes as Chasicó lake in Buenos Aires province (38°37.380’S- 63°4.735’W). We compared physicochemical parameters of water (pH, conductivity, ion concentration Ca2+, Mg2+ y Cl-) measured in the lake in 2010 with bibliographic data of 1999, 2003 and 2004 and different morphometric variables of silverside otoliths captured in 1998 and in 2010. The ion concentration of Ca2+, Mg2+ y Cl- increased between 11% and 90% in the period 1999-2010; the lake reduced its surface 20% in conjunction with a decrease in precipitations. We observed alterations in the distinctive morphological otolith pattern in about 18% of the individuals sampled, like irregular edges and perforations. We found a smaller width-length relation of the otolith for the year 2010 thus, indicating a decrease in its circularity. These morphological variations could be provoked by alterations in calcium carbonate deposition related to an increase in salinity and conductivity due to reduction in the surface of the lake. In conclusion, this study would indicate that morphology and morphometry of otoliths reflect environmental stress.
Instituto de Limnología "Raúl A. Ringuelet"
Materia
Ciencias Naturales
Laguna Chasicó (Buenos Aires, Argentina)
otolito
Odontesthes bonariensis
estrés ambiental
otolith
environmental stress
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/68856

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spelling ¿El otolito de pejerrey (Odontesthes bonariensis), refleja el estrés ambiental?Avigliano, EstebanTombari, A.Volpedo, Alejandra V.Ciencias NaturalesLaguna Chasicó (Buenos Aires, Argentina)otolitoOdontesthes bonariensisestrés ambientalotolithenvironmental stressIt has been proven that otoliths reflect morphology, morphometry and chemical composition of the environment that fish frequent. However, it has not been established if extreme environmental changes can be reflected by such structure. In this study, we analyze the morphology and morphometry of otolith sagitta of silverside (Odontesthes bonariensis) living in a setting that shows important environmental changes as Chasicó lake in Buenos Aires province (38°37.380’S- 63°4.735’W). We compared physicochemical parameters of water (pH, conductivity, ion concentration Ca2+, Mg2+ y Cl-) measured in the lake in 2010 with bibliographic data of 1999, 2003 and 2004 and different morphometric variables of silverside otoliths captured in 1998 and in 2010. The ion concentration of Ca2+, Mg2+ y Cl- increased between 11% and 90% in the period 1999-2010; the lake reduced its surface 20% in conjunction with a decrease in precipitations. We observed alterations in the distinctive morphological otolith pattern in about 18% of the individuals sampled, like irregular edges and perforations. We found a smaller width-length relation of the otolith for the year 2010 thus, indicating a decrease in its circularity. These morphological variations could be provoked by alterations in calcium carbonate deposition related to an increase in salinity and conductivity due to reduction in the surface of the lake. In conclusion, this study would indicate that morphology and morphometry of otoliths reflect environmental stress.Instituto de Limnología "Raúl A. Ringuelet"2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf9-15http://sedici.unlp.edu.ar/handle/10915/68856spainfo:eu-repo/semantics/altIdentifier/issn/0326-1638info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:42:48Zoai:sedici.unlp.edu.ar:10915/68856Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:42:48.478SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv ¿El otolito de pejerrey (Odontesthes bonariensis), refleja el estrés ambiental?
title ¿El otolito de pejerrey (Odontesthes bonariensis), refleja el estrés ambiental?
spellingShingle ¿El otolito de pejerrey (Odontesthes bonariensis), refleja el estrés ambiental?
Avigliano, Esteban
Ciencias Naturales
Laguna Chasicó (Buenos Aires, Argentina)
otolito
Odontesthes bonariensis
estrés ambiental
otolith
environmental stress
title_short ¿El otolito de pejerrey (Odontesthes bonariensis), refleja el estrés ambiental?
title_full ¿El otolito de pejerrey (Odontesthes bonariensis), refleja el estrés ambiental?
title_fullStr ¿El otolito de pejerrey (Odontesthes bonariensis), refleja el estrés ambiental?
title_full_unstemmed ¿El otolito de pejerrey (Odontesthes bonariensis), refleja el estrés ambiental?
title_sort ¿El otolito de pejerrey (Odontesthes bonariensis), refleja el estrés ambiental?
dc.creator.none.fl_str_mv Avigliano, Esteban
Tombari, A.
Volpedo, Alejandra V.
author Avigliano, Esteban
author_facet Avigliano, Esteban
Tombari, A.
Volpedo, Alejandra V.
author_role author
author2 Tombari, A.
Volpedo, Alejandra V.
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Laguna Chasicó (Buenos Aires, Argentina)
otolito
Odontesthes bonariensis
estrés ambiental
otolith
environmental stress
topic Ciencias Naturales
Laguna Chasicó (Buenos Aires, Argentina)
otolito
Odontesthes bonariensis
estrés ambiental
otolith
environmental stress
dc.description.none.fl_txt_mv It has been proven that otoliths reflect morphology, morphometry and chemical composition of the environment that fish frequent. However, it has not been established if extreme environmental changes can be reflected by such structure. In this study, we analyze the morphology and morphometry of otolith sagitta of silverside (Odontesthes bonariensis) living in a setting that shows important environmental changes as Chasicó lake in Buenos Aires province (38°37.380’S- 63°4.735’W). We compared physicochemical parameters of water (pH, conductivity, ion concentration Ca2+, Mg2+ y Cl-) measured in the lake in 2010 with bibliographic data of 1999, 2003 and 2004 and different morphometric variables of silverside otoliths captured in 1998 and in 2010. The ion concentration of Ca2+, Mg2+ y Cl- increased between 11% and 90% in the period 1999-2010; the lake reduced its surface 20% in conjunction with a decrease in precipitations. We observed alterations in the distinctive morphological otolith pattern in about 18% of the individuals sampled, like irregular edges and perforations. We found a smaller width-length relation of the otolith for the year 2010 thus, indicating a decrease in its circularity. These morphological variations could be provoked by alterations in calcium carbonate deposition related to an increase in salinity and conductivity due to reduction in the surface of the lake. In conclusion, this study would indicate that morphology and morphometry of otoliths reflect environmental stress.
Instituto de Limnología "Raúl A. Ringuelet"
description It has been proven that otoliths reflect morphology, morphometry and chemical composition of the environment that fish frequent. However, it has not been established if extreme environmental changes can be reflected by such structure. In this study, we analyze the morphology and morphometry of otolith sagitta of silverside (Odontesthes bonariensis) living in a setting that shows important environmental changes as Chasicó lake in Buenos Aires province (38°37.380’S- 63°4.735’W). We compared physicochemical parameters of water (pH, conductivity, ion concentration Ca2+, Mg2+ y Cl-) measured in the lake in 2010 with bibliographic data of 1999, 2003 and 2004 and different morphometric variables of silverside otoliths captured in 1998 and in 2010. The ion concentration of Ca2+, Mg2+ y Cl- increased between 11% and 90% in the period 1999-2010; the lake reduced its surface 20% in conjunction with a decrease in precipitations. We observed alterations in the distinctive morphological otolith pattern in about 18% of the individuals sampled, like irregular edges and perforations. We found a smaller width-length relation of the otolith for the year 2010 thus, indicating a decrease in its circularity. These morphological variations could be provoked by alterations in calcium carbonate deposition related to an increase in salinity and conductivity due to reduction in the surface of the lake. In conclusion, this study would indicate that morphology and morphometry of otoliths reflect environmental stress.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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format article
status_str publishedVersion
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dc.language.none.fl_str_mv spa
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dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0326-1638
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
9-15
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