Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation

Autores
Costa Gonçalves Portelinha, Thiago; Jahn, Graciela Alma; Hapon, María Belén; Verdade, Luciano M.; Piña, Carlos Ignacio
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Although there is much information available about reproduction in Caiman latirostris, knowledge related to steroid hormone levels and follicle development for wild adult females is still lacking. In this study we monitored and assessed the development of follicles and eggs and correlated these results with plasma steroid hormone levels in 32 adult females captured in Santa Fe, Argentina. Fieldwork was carried out over two reproductive seasons (October?January) between 2010 and 2012. Using an ultrasound device to take images of the reproductive structures of adult females, we observed individuals with vitellogenic follicles (n = 5), eggs (n = 4), atretic follicles (n = 11), and inactive reproductive structures (n = 12). We found no reproductive females smaller than 65 cm snout?vent length. High levels of estradiol were found during the ovulation period (November) only in reproductive females. Reproductive females showed no differences in progesterone levels during the study period (November?January) compared to non-reproductive females; however, reproductive females showed higher progesterone levels during nesting (December). We found no differences in progesterone levels between reproductive females and females with atretic follicles at the end of the nesting period (January). Ultrasound imaging was found to be an efficient technique to study reproductive structures at the beginning of reproductive cycle of the broad-snouted caiman. Isolated analyses of hormonal levels are not sufficient to determine the reproductive condition of C. latirostris females.
Fil: Costa Gonçalves Portelinha, Thiago. 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. Universidade Federal do Tocantins; Brasil. Universidad Nacional del Litoral; Argentina
Fil: Jahn, Graciela Alma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; Argentina
Fil: Hapon, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Verdade, Luciano M.. Universidade de Sao Paulo; 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. Universidad Nacional del Litoral; Argentina. Universidad Autónoma de Entre Ríos; Argentina
Materia
Crocodilians
Radioimmunoassay (Ria)
Reproduction
Reproductive Hormones
Ultrasonography
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:11336/41298

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network_name_str CONICET Digital (CONICET)
spelling Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) OvulationCosta Gonçalves Portelinha, ThiagoJahn, Graciela AlmaHapon, María BelénVerdade, Luciano M.Piña, Carlos IgnacioCrocodiliansRadioimmunoassay (Ria)ReproductionReproductive HormonesUltrasonographyhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Although there is much information available about reproduction in Caiman latirostris, knowledge related to steroid hormone levels and follicle development for wild adult females is still lacking. In this study we monitored and assessed the development of follicles and eggs and correlated these results with plasma steroid hormone levels in 32 adult females captured in Santa Fe, Argentina. Fieldwork was carried out over two reproductive seasons (October?January) between 2010 and 2012. Using an ultrasound device to take images of the reproductive structures of adult females, we observed individuals with vitellogenic follicles (n = 5), eggs (n = 4), atretic follicles (n = 11), and inactive reproductive structures (n = 12). We found no reproductive females smaller than 65 cm snout?vent length. High levels of estradiol were found during the ovulation period (November) only in reproductive females. Reproductive females showed no differences in progesterone levels during the study period (November?January) compared to non-reproductive females; however, reproductive females showed higher progesterone levels during nesting (December). We found no differences in progesterone levels between reproductive females and females with atretic follicles at the end of the nesting period (January). Ultrasound imaging was found to be an efficient technique to study reproductive structures at the beginning of reproductive cycle of the broad-snouted caiman. Isolated analyses of hormonal levels are not sufficient to determine the reproductive condition of C. latirostris females.Fil: Costa Gonçalves Portelinha, Thiago. 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. Universidade Federal do Tocantins; Brasil. Universidad Nacional del Litoral; ArgentinaFil: Jahn, Graciela Alma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; ArgentinaFil: Hapon, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Verdade, Luciano M.. Universidade de Sao Paulo; 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; Argentina. Universidad Nacional del Litoral; Argentina. Universidad Autónoma de Entre Ríos; ArgentinaBrazilian Society of Herpetology2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/41298Costa Gonçalves Portelinha, Thiago; Jahn, Graciela Alma; Hapon, María Belén; Verdade, Luciano M.; Piña, Carlos Ignacio; Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation; Brazilian Society of Herpetology; South American Journal of Herpetology; 10; 1; 4-2015; 23-311808-9798CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.2994/SAJH-D-14-00030.1info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/10.2994/SAJH-D-14-00030.1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:24:30Zoai:ri.conicet.gov.ar:11336/41298instacron: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:34982025-10-15 15:24:31.197CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation
title Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation
spellingShingle Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation
Costa Gonçalves Portelinha, Thiago
Crocodilians
Radioimmunoassay (Ria)
Reproduction
Reproductive Hormones
Ultrasonography
title_short Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation
title_full Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation
title_fullStr Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation
title_full_unstemmed Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation
title_sort Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation
dc.creator.none.fl_str_mv Costa Gonçalves Portelinha, Thiago
Jahn, Graciela Alma
Hapon, María Belén
Verdade, Luciano M.
Piña, Carlos Ignacio
author Costa Gonçalves Portelinha, Thiago
author_facet Costa Gonçalves Portelinha, Thiago
Jahn, Graciela Alma
Hapon, María Belén
Verdade, Luciano M.
Piña, Carlos Ignacio
author_role author
author2 Jahn, Graciela Alma
Hapon, María Belén
Verdade, Luciano M.
Piña, Carlos Ignacio
author2_role author
author
author
author
dc.subject.none.fl_str_mv Crocodilians
Radioimmunoassay (Ria)
Reproduction
Reproductive Hormones
Ultrasonography
topic Crocodilians
Radioimmunoassay (Ria)
Reproduction
Reproductive Hormones
Ultrasonography
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Although there is much information available about reproduction in Caiman latirostris, knowledge related to steroid hormone levels and follicle development for wild adult females is still lacking. In this study we monitored and assessed the development of follicles and eggs and correlated these results with plasma steroid hormone levels in 32 adult females captured in Santa Fe, Argentina. Fieldwork was carried out over two reproductive seasons (October?January) between 2010 and 2012. Using an ultrasound device to take images of the reproductive structures of adult females, we observed individuals with vitellogenic follicles (n = 5), eggs (n = 4), atretic follicles (n = 11), and inactive reproductive structures (n = 12). We found no reproductive females smaller than 65 cm snout?vent length. High levels of estradiol were found during the ovulation period (November) only in reproductive females. Reproductive females showed no differences in progesterone levels during the study period (November?January) compared to non-reproductive females; however, reproductive females showed higher progesterone levels during nesting (December). We found no differences in progesterone levels between reproductive females and females with atretic follicles at the end of the nesting period (January). Ultrasound imaging was found to be an efficient technique to study reproductive structures at the beginning of reproductive cycle of the broad-snouted caiman. Isolated analyses of hormonal levels are not sufficient to determine the reproductive condition of C. latirostris females.
Fil: Costa Gonçalves Portelinha, Thiago. 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. Universidade Federal do Tocantins; Brasil. Universidad Nacional del Litoral; Argentina
Fil: Jahn, Graciela Alma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; Argentina
Fil: Hapon, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Verdade, Luciano M.. Universidade de Sao Paulo; 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. Universidad Nacional del Litoral; Argentina. Universidad Autónoma de Entre Ríos; Argentina
description Although there is much information available about reproduction in Caiman latirostris, knowledge related to steroid hormone levels and follicle development for wild adult females is still lacking. In this study we monitored and assessed the development of follicles and eggs and correlated these results with plasma steroid hormone levels in 32 adult females captured in Santa Fe, Argentina. Fieldwork was carried out over two reproductive seasons (October?January) between 2010 and 2012. Using an ultrasound device to take images of the reproductive structures of adult females, we observed individuals with vitellogenic follicles (n = 5), eggs (n = 4), atretic follicles (n = 11), and inactive reproductive structures (n = 12). We found no reproductive females smaller than 65 cm snout?vent length. High levels of estradiol were found during the ovulation period (November) only in reproductive females. Reproductive females showed no differences in progesterone levels during the study period (November?January) compared to non-reproductive females; however, reproductive females showed higher progesterone levels during nesting (December). We found no differences in progesterone levels between reproductive females and females with atretic follicles at the end of the nesting period (January). Ultrasound imaging was found to be an efficient technique to study reproductive structures at the beginning of reproductive cycle of the broad-snouted caiman. Isolated analyses of hormonal levels are not sufficient to determine the reproductive condition of C. latirostris females.
publishDate 2015
dc.date.none.fl_str_mv 2015-04
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/11336/41298
Costa Gonçalves Portelinha, Thiago; Jahn, Graciela Alma; Hapon, María Belén; Verdade, Luciano M.; Piña, Carlos Ignacio; Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation; Brazilian Society of Herpetology; South American Journal of Herpetology; 10; 1; 4-2015; 23-31
1808-9798
CONICET Digital
CONICET
url http://hdl.handle.net/11336/41298
identifier_str_mv Costa Gonçalves Portelinha, Thiago; Jahn, Graciela Alma; Hapon, María Belén; Verdade, Luciano M.; Piña, Carlos Ignacio; Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation; Brazilian Society of Herpetology; South American Journal of Herpetology; 10; 1; 4-2015; 23-31
1808-9798
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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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/
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dc.publisher.none.fl_str_mv Brazilian Society of Herpetology
publisher.none.fl_str_mv Brazilian Society of Herpetology
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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