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dc.contributor.author
Costa Gonçalves Portelinha, Thiago
dc.contributor.author
Jahn, Graciela Alma
dc.contributor.author
Hapon, María Belén
dc.contributor.author
Verdade, Luciano M.
dc.contributor.author
Piña, Carlos Ignacio
dc.date.available
2018-04-09T14:21:13Z
dc.date.issued
2015-04
dc.identifier.citation
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
dc.identifier.issn
1808-9798
dc.identifier.uri
http://hdl.handle.net/11336/41298
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Brazilian Society of Herpetology
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Crocodilians
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Radioimmunoassay (Ria)
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Reproduction
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Reproductive Hormones
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Ultrasonography
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Otras Ciencias Biológicas
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Hormone Levels and Ultrasound Evaluation of Caiman latirostris (Crocodylia, Alligatoridae) Ovulation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-27T13:35:44Z
dc.journal.volume
10
dc.journal.number
1
dc.journal.pagination
23-31
dc.journal.pais
Brasil
dc.journal.ciudad
São Paulo
dc.description.fil
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
dc.description.fil
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
dc.description.fil
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
dc.description.fil
Fil: Verdade, Luciano M.. Universidade de Sao Paulo; Brasil
dc.description.fil
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
dc.journal.title
South American Journal of Herpetology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.2994/SAJH-D-14-00030.1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/10.2994/SAJH-D-14-00030.1
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