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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/18844
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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 Técnicas2025-09-03T10:01:31Zoai: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:34982025-09-03 10:01:32.015CONICET 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 |
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1842269702430130176 |
score |
13.13397 |