Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus

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 t...

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Autores principales:	Tubert, Cecilia, Lo Nostro, Fabiana Laura, Pandolfi, Matías
Publicado:	2012
Materias:	Cichlids GnRH Neuroendocrinology Pituitary Reproduction Steroids androgen estradiol gonadorelin aggression androgen blood level animal experiment animal tissue article Cichlasoma dimerus cichlid estradiol blood level female hypothalamus hypophysis system nerve cell nonhuman optical density priority journal reproduction sexual behavior spawning Aggression Animals Brain Estradiol Female Follicle Stimulating Hormone, beta Subunit Gonadotropin-Releasing Hormone Hydrocortisone Luteinizing Hormone, beta Subunit Male Neurons Ovary Pituitary Gland Pyrrolidonecarboxylic Acid Reproductive Physiological Processes Testosterone
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319384_v106_n2_p193_Tubert http://hdl.handle.net/20.500.12110/paper_00319384_v106_n2_p193_Tubert
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00319384_v106_n2_p193_Tubert
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spelling	paper:paper_00319384_v106_n2_p193_Tubert2023-06-08T14:59:01Z Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus Tubert, Cecilia Lo Nostro, Fabiana Laura Pandolfi, Matías Cichlids GnRH Neuroendocrinology Pituitary Reproduction Steroids androgen estradiol gonadorelin aggression androgen blood level animal experiment animal tissue article Cichlasoma dimerus cichlid estradiol blood level female hypothalamus hypophysis system nerve cell nonhuman optical density priority journal reproduction sexual behavior spawning Aggression Animals Brain Cichlids Estradiol Female Follicle Stimulating Hormone, beta Subunit Gonadotropin-Releasing Hormone Hydrocortisone Luteinizing Hormone, beta Subunit Male Neurons Ovary Pituitary Gland Pyrrolidonecarboxylic Acid Reproductive Physiological Processes Testosterone 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. © 2012 Elsevier Inc. Fil:Tubert, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lo Nostro, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pandolfi, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319384_v106_n2_p193_Tubert http://hdl.handle.net/20.500.12110/paper_00319384_v106_n2_p193_Tubert
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Cichlids GnRH Neuroendocrinology Pituitary Reproduction Steroids androgen estradiol gonadorelin aggression androgen blood level animal experiment animal tissue article Cichlasoma dimerus cichlid estradiol blood level female hypothalamus hypophysis system nerve cell nonhuman optical density priority journal reproduction sexual behavior spawning Aggression Animals Brain Cichlids Estradiol Female Follicle Stimulating Hormone, beta Subunit Gonadotropin-Releasing Hormone Hydrocortisone Luteinizing Hormone, beta Subunit Male Neurons Ovary Pituitary Gland Pyrrolidonecarboxylic Acid Reproductive Physiological Processes Testosterone
spellingShingle	Cichlids GnRH Neuroendocrinology Pituitary Reproduction Steroids androgen estradiol gonadorelin aggression androgen blood level animal experiment animal tissue article Cichlasoma dimerus cichlid estradiol blood level female hypothalamus hypophysis system nerve cell nonhuman optical density priority journal reproduction sexual behavior spawning Aggression Animals Brain Cichlids Estradiol Female Follicle Stimulating Hormone, beta Subunit Gonadotropin-Releasing Hormone Hydrocortisone Luteinizing Hormone, beta Subunit Male Neurons Ovary Pituitary Gland Pyrrolidonecarboxylic Acid Reproductive Physiological Processes Testosterone Tubert, Cecilia Lo Nostro, Fabiana Laura Pandolfi, Matías Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus
topic_facet	Cichlids GnRH Neuroendocrinology Pituitary Reproduction Steroids androgen estradiol gonadorelin aggression androgen blood level animal experiment animal tissue article Cichlasoma dimerus cichlid estradiol blood level female hypothalamus hypophysis system nerve cell nonhuman optical density priority journal reproduction sexual behavior spawning Aggression Animals Brain Cichlids Estradiol Female Follicle Stimulating Hormone, beta Subunit Gonadotropin-Releasing Hormone Hydrocortisone Luteinizing Hormone, beta Subunit Male Neurons Ovary Pituitary Gland Pyrrolidonecarboxylic Acid Reproductive Physiological Processes Testosterone
description	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. © 2012 Elsevier Inc.
author	Tubert, Cecilia Lo Nostro, Fabiana Laura Pandolfi, Matías
author_facet	Tubert, Cecilia Lo Nostro, Fabiana Laura Pandolfi, Matías
author_sort	Tubert, Cecilia
title	Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus
title_short	Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus
title_full	Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus
title_fullStr	Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus
title_full_unstemmed	Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus
title_sort	aggressive behavior and reproductive physiology in females of the social cichlid fish cichlasoma dimerus
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319384_v106_n2_p193_Tubert http://hdl.handle.net/20.500.12110/paper_00319384_v106_n2_p193_Tubert
work_keys_str_mv	AT tubertcecilia aggressivebehaviorandreproductivephysiologyinfemalesofthesocialcichlidfishcichlasomadimerus AT lonostrofabianalaura aggressivebehaviorandreproductivephysiologyinfemalesofthesocialcichlidfishcichlasomadimerus AT pandolfimatias aggressivebehaviorandreproductivephysiologyinfemalesofthesocialcichlidfishcichlasomadimerus
_version_	1768543219671367680

Aggressive behavior and reproductive physiology in females of the social cichlid fish Cichlasoma dimerus

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