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dc.contributor.author
Tubert, Cecilia
dc.contributor.author
Lo Nostro, Fabiana Laura
dc.contributor.author
Villafañe, Virginia
dc.contributor.author
Pandolfi, Matias
dc.date.available
2020-09-08T18:02:50Z
dc.date.issued
2012-05
dc.identifier.citation
Tubert, Cecilia; Lo Nostro, Fabiana Laura; Villafañe, Virginia; Pandolfi, Matias; Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus; Pergamon-Elsevier Science Ltd; Physiology And Behavior; 106; 2; 5-2012; 193-200
dc.identifier.issn
0031-9384
dc.identifier.uri
http://hdl.handle.net/11336/113535
dc.description.abstract
The South American cichlid fish Cichlasoma dimerus is a freshwater species that presents social hierarchies, a highly organized breeding activity, biparental care and a high frequency of spawning. Spawning is followed by a period of parental care (about 20 days in aquaria conditions) during which the cooperative pair takes care of the eggs, both by fanning them and by removing dead ones. The different spawning events in the reproductive period were classified as female reproductive stages which can be subdivided in four phases, according to their offspring degree of development: (1) female with prespawning activity (day 0), (2) female with eggs (day 1 after fertilization), (3) female with hatched larvae (day 3 after fertilization) and (4) female with swimming larvae (FSL, day 8 after fertilization). In Perciform species gonadotropin-releasing hormone type-3 (GnRH3) neurons are associated with the olfactory bulbs acting as a potent neuromodulator of reproductive behaviors in males. The aim of this study is to characterize the GnRH3 neuronal system in females of C. dimerus in relation with aggressive behavior and reproductive physiology during different phases of the reproductive period. Females with prespawning activity were the most aggressive ones showing GnRH-3 neurons with bigger nuclear and somatic area and higher optical density than the others. They also presented the highest levels of plasma androgen and estradiol and maximum gonadosomatic indexes. These results provide information about the regulation and functioning of hypothalamus–pituitary–gonads axis during reproduction in a species with highly organized breeding activity.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
agresividad
dc.subject
ciclidos
dc.subject
GnRH
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Esteroides sexuales
dc.subject.classification
Biología Reproductiva
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-09-08T14:02:55Z
dc.journal.volume
106
dc.journal.number
2
dc.journal.pagination
193-200
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Tubert, Cecilia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina
dc.description.fil
Fil: Lo Nostro, Fabiana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina
dc.description.fil
Fil: Villafañe, Virginia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina
dc.description.fil
Fil: Pandolfi, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina
dc.journal.title
Physiology And Behavior
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0031938412000674
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.physbeh.2012.02.002
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