Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)

Autores
Marques, Thiago S.; Lara, Neliton R. F.; Bassetti, Luís A. B.; Piña, Carlos Ignacio; Camargo, Plínio B.; Verdade, Luciano M.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Strategies to minimise intraspecific competition are common in wild animals. For example, individuals may exploit food resources at different levels of the food chain. Analyses of stable isotopes are particularly useful for confirming variations in an intraspecific niche because the chemical composition of animals tends to reflect both the food consumed and the habitats occupied by the species. However, studies using this methodology to investigate neotropical crocodilians are scarce. This study aimed to verify the existence of ontogenetic and sexual niche variation in broad-snouted caiman in a silvicultural landscape in Brazil through the use of carbon and nitrogen stable isotopes. The isotopic ratios of carbon and nitrogen were determined in claw samples collected from 24 juveniles, 8 adults, and 16 hatchlings of C. latirostris. We identified a discrete ontogenetic variation in the isotopic niche and sexual difference only for juveniles. These results may indicate differences in the exploitation resources and a consequent reduction in competition between age classes.
Fil: Marques, Thiago S.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
Fil: Lara, Neliton R. F.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
Fil: Bassetti, Luís A. B.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
Fil: Piña, Carlos Ignacio. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina
Fil: Camargo, Plínio B.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
Fil: Verdade, Luciano M.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
Materia
Carbon-13
Crocodilians
Food Resources
Isotope Ecology
Niche Variation
Nitrogen-15
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/18844
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)Marques, Thiago S.Lara, Neliton R. F.Bassetti, Luís A. B.Piña, Carlos IgnacioCamargo, Plínio B.Verdade, Luciano M.Carbon-13CrocodiliansFood ResourcesIsotope EcologyNiche VariationNitrogen-15https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Strategies to minimise intraspecific competition are common in wild animals. For example, individuals may exploit food resources at different levels of the food chain. Analyses of stable isotopes are particularly useful for confirming variations in an intraspecific niche because the chemical composition of animals tends to reflect both the food consumed and the habitats occupied by the species. However, studies using this methodology to investigate neotropical crocodilians are scarce. This study aimed to verify the existence of ontogenetic and sexual niche variation in broad-snouted caiman in a silvicultural landscape in Brazil through the use of carbon and nitrogen stable isotopes. The isotopic ratios of carbon and nitrogen were determined in claw samples collected from 24 juveniles, 8 adults, and 16 hatchlings of C. latirostris. We identified a discrete ontogenetic variation in the isotopic niche and sexual difference only for juveniles. These results may indicate differences in the exploitation resources and a consequent reduction in competition between age classes.Fil: Marques, Thiago S.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; BrasilFil: Lara, Neliton R. F.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; BrasilFil: Bassetti, Luís A. B.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; BrasilFil: Piña, Carlos Ignacio. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; ArgentinaFil: Camargo, Plínio B.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; BrasilFil: Verdade, Luciano M.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; BrasilTaylor & Francis2013-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/18844Marques, Thiago S.; Lara, Neliton R. F.; Bassetti, Luís A. B.; Piña, Carlos Ignacio; Camargo, Plínio B.; et al.; Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris); Taylor & Francis; Isotopes In Environmental And Health Studies; 49; 3; 10-2013; 325-3351025-6016CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1080/10256016.2013.835309info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/10256016.2013.835309info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:15:19Zoai:ri.conicet.gov.ar:11336/18844instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:15:19.463CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)
title Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)
spellingShingle Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)
Marques, Thiago S.
Carbon-13
Crocodilians
Food Resources
Isotope Ecology
Niche Variation
Nitrogen-15
title_short Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)
title_full Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)
title_fullStr Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)
title_full_unstemmed Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)
title_sort Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)
dc.creator.none.fl_str_mv Marques, Thiago S.
Lara, Neliton R. F.
Bassetti, Luís A. B.
Piña, Carlos Ignacio
Camargo, Plínio B.
Verdade, Luciano M.
author Marques, Thiago S.
author_facet Marques, Thiago S.
Lara, Neliton R. F.
Bassetti, Luís A. B.
Piña, Carlos Ignacio
Camargo, Plínio B.
Verdade, Luciano M.
author_role author
author2 Lara, Neliton R. F.
Bassetti, Luís A. B.
Piña, Carlos Ignacio
Camargo, Plínio B.
Verdade, Luciano M.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Carbon-13
Crocodilians
Food Resources
Isotope Ecology
Niche Variation
Nitrogen-15
topic Carbon-13
Crocodilians
Food Resources
Isotope Ecology
Niche Variation
Nitrogen-15
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Strategies to minimise intraspecific competition are common in wild animals. For example, individuals may exploit food resources at different levels of the food chain. Analyses of stable isotopes are particularly useful for confirming variations in an intraspecific niche because the chemical composition of animals tends to reflect both the food consumed and the habitats occupied by the species. However, studies using this methodology to investigate neotropical crocodilians are scarce. This study aimed to verify the existence of ontogenetic and sexual niche variation in broad-snouted caiman in a silvicultural landscape in Brazil through the use of carbon and nitrogen stable isotopes. The isotopic ratios of carbon and nitrogen were determined in claw samples collected from 24 juveniles, 8 adults, and 16 hatchlings of C. latirostris. We identified a discrete ontogenetic variation in the isotopic niche and sexual difference only for juveniles. These results may indicate differences in the exploitation resources and a consequent reduction in competition between age classes.
Fil: Marques, Thiago S.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
Fil: Lara, Neliton R. F.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
Fil: Bassetti, Luís A. B.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
Fil: Piña, Carlos Ignacio. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina
Fil: Camargo, Plínio B.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
Fil: Verdade, Luciano M.. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
description Strategies to minimise intraspecific competition are common in wild animals. For example, individuals may exploit food resources at different levels of the food chain. Analyses of stable isotopes are particularly useful for confirming variations in an intraspecific niche because the chemical composition of animals tends to reflect both the food consumed and the habitats occupied by the species. However, studies using this methodology to investigate neotropical crocodilians are scarce. This study aimed to verify the existence of ontogenetic and sexual niche variation in broad-snouted caiman in a silvicultural landscape in Brazil through the use of carbon and nitrogen stable isotopes. The isotopic ratios of carbon and nitrogen were determined in claw samples collected from 24 juveniles, 8 adults, and 16 hatchlings of C. latirostris. We identified a discrete ontogenetic variation in the isotopic niche and sexual difference only for juveniles. These results may indicate differences in the exploitation resources and a consequent reduction in competition between age classes.
publishDate 2013
dc.date.none.fl_str_mv 2013-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/18844
Marques, Thiago S.; Lara, Neliton R. F.; Bassetti, Luís A. B.; Piña, Carlos Ignacio; Camargo, Plínio B.; et al.; Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris); Taylor & Francis; Isotopes In Environmental And Health Studies; 49; 3; 10-2013; 325-335
1025-6016
CONICET Digital
CONICET
url http://hdl.handle.net/11336/18844
identifier_str_mv Marques, Thiago S.; Lara, Neliton R. F.; Bassetti, Luís A. B.; Piña, Carlos Ignacio; Camargo, Plínio B.; et al.; Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris); Taylor & Francis; Isotopes In Environmental And Health Studies; 49; 3; 10-2013; 325-335
1025-6016
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1080/10256016.2013.835309
info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/10256016.2013.835309
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614088590622720
score 13.069144

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