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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/41298
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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 |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.2994/SAJH-D-14-00030.1 info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/10.2994/SAJH-D-14-00030.1 |
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 application/pdf application/pdf application/pdf application/pdf |
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 |
_version_ |
1846083391986860032 |
score |
13.22299 |